A new distiller’s high protein product (corn fermented protein – CFP) from the dry grind bioethanol process was evaluated as an alternative to soybean meal (SBM) protein in starter and grower diets for turkey poults. One-day- old male BUT6 poults (250) were distributed randomly into 50 pens. Each pen was allocated to one of the following treatments (10 pens each), control (high protein with soybean meal as primary protein source), CFP4% (4% CFP in replacement of SBM); CFP8% (8% CFP in replacement of SBM); HF-CFP4% (4% CFP with lower protein, higher fibre SBM, as primary protein source) and Premium (5% soy protein isolate (SPI) in place of high protein SBM). All diets were isonitrogenous and isoenergetic. Growth performance was measured weekly. At day 42, three poults per pen were sampled to obtain the ileal digesta. Apparent amino acid digestibility (AAAD), nitrogen retention (ANR) and apparent metabolisable energy corrected for nitrogen (AMEn) were measured. At day 42 poult weight and day 0–d42 weight gain for birds fed CFP8% were significantly better than the control. From day 0–42 feed intake nor feed conversion ratio were affected by dietary treatment (P > 0.05). Poults receiving CFP 8% had higher AMEn and ANR compared to the control (P < 0.05). The CFP8%-fed poults had significantly higher valine, isoleucine and proline digestibility compared to the control. Feeding the CFP8% diet significantly lowered growth carbon footprint (P < 0.05). In conclusion, CFP8% can increase ANR and growth performance of turkeys. This would decrease the dependency on SBM, reducing both economic and the environmental cost of turkey production.
{"title":"Corn fermented protein, an alternative protein to soybean meal to support growth in young turkey poults","authors":"D. Scholey, A. Alkhtib, P. Williams, E. Burton","doi":"10.3920/jaan2023.0002","DOIUrl":"https://doi.org/10.3920/jaan2023.0002","url":null,"abstract":"\u0000A new distiller’s high protein product (corn fermented protein – CFP) from the dry grind bioethanol process was evaluated as an alternative to soybean meal (SBM) protein in starter and grower diets for turkey poults. One-day- old male BUT6 poults (250) were distributed randomly into 50 pens. Each pen was allocated to one of the following treatments (10 pens each), control (high protein with soybean meal as primary protein source), CFP4% (4% CFP in replacement of SBM); CFP8% (8% CFP in replacement of SBM); HF-CFP4% (4% CFP with lower protein, higher fibre SBM, as primary protein source) and Premium (5% soy protein isolate (SPI) in place of high protein SBM). All diets were isonitrogenous and isoenergetic. Growth performance was measured weekly. At day 42, three poults per pen were sampled to obtain the ileal digesta. Apparent amino acid digestibility (AAAD), nitrogen retention (ANR) and apparent metabolisable energy corrected for nitrogen (AMEn) were measured. At day 42 poult weight and day 0–d42 weight gain for birds fed CFP8% were significantly better than the control. From day 0–42 feed intake nor feed conversion ratio were affected by dietary treatment (P > 0.05). Poults receiving CFP 8% had higher AMEn and ANR compared to the control (P < 0.05). The CFP8%-fed poults had significantly higher valine, isoleucine and proline digestibility compared to the control. Feeding the CFP8% diet significantly lowered growth carbon footprint (P < 0.05). In conclusion, CFP8% can increase ANR and growth performance of turkeys. This would decrease the dependency on SBM, reducing both economic and the environmental cost of turkey production.","PeriodicalId":36124,"journal":{"name":"Journal of Applied Animal Nutrition","volume":" 35","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140682699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-05DOI: 10.1163/2049257x-20231003
W. Wagner, A. Adler, B. Andreas, A. Breitenstein, M. Egert, O. Häger, A. Hahn, R. Neumann, B. Pickel, J. Strassgüttl, M. Weber, S. Wolf, J. Wolfram, K. Zecher, P. Zimmermann, H. Mietke
The combined measurement uncertainty of quantitative microbiological methods in the area of food and feed is calculated according to ISO 19036:2019 from the technical (intra-laboratory reproducibility standard deviation), the distributional and the matrix uncertainty (umatrix) of the respective sample type. The matrix uncertainty is a property of a certain sample type and independent of the individual laboratory and analysis, respectively. This study broadens the, so far, comparatively small data base on matrix uncertainties for feeding stuffs by investigating 20 representative feed types in 46 sample series. Thereby, difficulties and limitations arising from sample preparation, the selection of different microbial groups (bacteria and fungi) and the nature of different feed types are highlighted. In addition, the applicability with industrially added feed additives (e.g. probiotics) is discussed. In conclusion, the postulated independence and scope of the matrix uncertainty are limited in these respects.
根据 ISO 19036:2019，食品和饲料领域微生物定量方法的综合测量不确定度由相应样品类型的技术不确定度（实验室内重现性标准偏差）、分布不确定度和矩阵不确定度（umatrix）计算得出。矩阵不确定度是特定样品类型的属性，与实验室和分析无关。本研究通过调查 46 个样品系列中 20 种具有代表性的饲料类型，扩大了迄今为止相对较小的饲粮基体不确定性数据库。因此，突出强调了样品制备、不同微生物群（细菌和真菌）的选择以及不同饲料类型的性质所带来的困难和限制。此外，还讨论了工业添加饲料添加剂（如益生菌）的适用性。总之，基质不确定性的假定独立性和范围在这些方面是有限的。
{"title":"Matrix uncertainty in feeding-stuffs according to ISO 19036:2019","authors":"W. Wagner, A. Adler, B. Andreas, A. Breitenstein, M. Egert, O. Häger, A. Hahn, R. Neumann, B. Pickel, J. Strassgüttl, M. Weber, S. Wolf, J. Wolfram, K. Zecher, P. Zimmermann, H. Mietke","doi":"10.1163/2049257x-20231003","DOIUrl":"https://doi.org/10.1163/2049257x-20231003","url":null,"abstract":"\u0000The combined measurement uncertainty of quantitative microbiological methods in the area of food and feed is calculated according to ISO 19036:2019 from the technical (intra-laboratory reproducibility standard deviation), the distributional and the matrix uncertainty (umatrix) of the respective sample type. The matrix uncertainty is a property of a certain sample type and independent of the individual laboratory and analysis, respectively. This study broadens the, so far, comparatively small data base on matrix uncertainties for feeding stuffs by investigating 20 representative feed types in 46 sample series. Thereby, difficulties and limitations arising from sample preparation, the selection of different microbial groups (bacteria and fungi) and the nature of different feed types are highlighted. In addition, the applicability with industrially added feed additives (e.g. probiotics) is discussed. In conclusion, the postulated independence and scope of the matrix uncertainty are limited in these respects.","PeriodicalId":36124,"journal":{"name":"Journal of Applied Animal Nutrition","volume":"5 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140737084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-03DOI: 10.1163/2049257x-20231005
V. Ravindran, Y. Singh
The present study investigated the feeding value of maize distillers dried grains with solubles (mDDGS) for broiler chickens. As the first step, the nutrient composition, apparent metabolisable energy (AME) and apparent ileal amino acid digestibility of mDDGS were determined. These values were used to formulate iso-nutrient and isocaloric diets to evaluate the influence of graded levels of mDDGS on broiler performance, digestive tract development and carcass characteristics. Five maize-soybean based diets containing 0 or 5, 10, 15 and 20% of mDDGS, were formulated and cold-pelleted at 65 °C. Each diet was offered ad libitum to six replicates (eight birds per replicate cage) during starter (day 1–21) and finisher (day 22–35) phases. The mDDGS was analysed to contain (% dry matter (DM) basis): CP, 27.8; total non-starch polysaccharides, 28.6 and soluble non-starch polysaccharides, 5.6. The AME was determined to be 10.23 MJ/kg DM. The average ileal digestibility coefficient of indispensable AA was 0.826. The Inclusion of 20% mDDGS resulted in poorer (P < 0.05) feed per gain (quadratic effect, P < 0.05) during the starter period, but no negative effects (P > 0.05) were observed finisher period and the overall production period (day 1–35). Feed intake and feed per gain (linear effect, P < 0.05) decreased with increasing inclusions of mDDGS during finisher period and overall period. A tendency (P = 0.06) for linear improvement in excreta quality was observed with increasing inclusion levels of mDDGS. Relative digestive tract weights and carcass and breast meat yields were not influenced (P > 0.05) by dietary treatments. A linear (P < 0.05) decrease was observed for the relative lengths of jejunum, ileum and the small intestine. The results indicated that, when balanced for metabolisable energy and digestible amino acids, mDDGS can be incorporated into broiler starter and finisher diets up to 15 and 20%, respectively, with no adverse effects on live performance, carcass characteristics or excreta quality.
{"title":"Influence of graded levels of maize distillers dried grains with solubles (mDDGS) on the performance, digestive tract development and carcass characteristics of broilers","authors":"V. Ravindran, Y. Singh","doi":"10.1163/2049257x-20231005","DOIUrl":"https://doi.org/10.1163/2049257x-20231005","url":null,"abstract":"\u0000The present study investigated the feeding value of maize distillers dried grains with solubles (mDDGS) for broiler chickens. As the first step, the nutrient composition, apparent metabolisable energy (AME) and apparent ileal amino acid digestibility of mDDGS were determined. These values were used to formulate iso-nutrient and isocaloric diets to evaluate the influence of graded levels of mDDGS on broiler performance, digestive tract development and carcass characteristics. Five maize-soybean based diets containing 0 or 5, 10, 15 and 20% of mDDGS, were formulated and cold-pelleted at 65 °C. Each diet was offered ad libitum to six replicates (eight birds per replicate cage) during starter (day 1–21) and finisher (day 22–35) phases. The mDDGS was analysed to contain (% dry matter (DM) basis): CP, 27.8; total non-starch polysaccharides, 28.6 and soluble non-starch polysaccharides, 5.6. The AME was determined to be 10.23 MJ/kg DM. The average ileal digestibility coefficient of indispensable AA was 0.826. The Inclusion of 20% mDDGS resulted in poorer (P < 0.05) feed per gain (quadratic effect, P < 0.05) during the starter period, but no negative effects (P > 0.05) were observed finisher period and the overall production period (day 1–35). Feed intake and feed per gain (linear effect, P < 0.05) decreased with increasing inclusions of mDDGS during finisher period and overall period. A tendency (P = 0.06) for linear improvement in excreta quality was observed with increasing inclusion levels of mDDGS. Relative digestive tract weights and carcass and breast meat yields were not influenced (P > 0.05) by dietary treatments. A linear (P < 0.05) decrease was observed for the relative lengths of jejunum, ileum and the small intestine. The results indicated that, when balanced for metabolisable energy and digestible amino acids, mDDGS can be incorporated into broiler starter and finisher diets up to 15 and 20%, respectively, with no adverse effects on live performance, carcass characteristics or excreta quality.","PeriodicalId":36124,"journal":{"name":"Journal of Applied Animal Nutrition","volume":"1066 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140748962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-26DOI: 10.1163/2049257x-20231002
S. Washaya, B. Masunda, N.T. Ngongoni
The objective of this study was to investigate the impact and adoption of nutrition technologies and their effect on milk production at the Nharira-Lancashire dairy scheme. Sixty households (30 from each scheme) were randomly selected and interviewed by use of a semi-structured questionnaire. Fisher’s exact and Monte Carlo tests were carried out to determine the association between farmer experience and feed technology. Logistic regression was used to rank farmers’ awareness and adoption of feed technologies. The results indicated that farmers have been exposed to at least five new feed technologies and adoption is influenced by education status, sex, age and gender of household head (P < 0.05). Feed technology adoption was in the order: silage 70.83% > sunflower cake 41.66% > legume reinforcement 27.1% > legume trees 16.66% > napier fodder 8.33% > urea treatment 4.17%. Milk yield was affected by month and year (P < 0.05). The impact of adoption was below anticipation, as indicated by lack of economic surpluses. A cost-benefit analysis needs to be carried out for all feed technologies within the study area to streamline viable options.
{"title":"Impact and adoption of feed technologies at Nharira-Lancashire Dairy Scheme","authors":"S. Washaya, B. Masunda, N.T. Ngongoni","doi":"10.1163/2049257x-20231002","DOIUrl":"https://doi.org/10.1163/2049257x-20231002","url":null,"abstract":"\u0000The objective of this study was to investigate the impact and adoption of nutrition technologies and their effect on milk production at the Nharira-Lancashire dairy scheme. Sixty households (30 from each scheme) were randomly selected and interviewed by use of a semi-structured questionnaire. Fisher’s exact and Monte Carlo tests were carried out to determine the association between farmer experience and feed technology. Logistic regression was used to rank farmers’ awareness and adoption of feed technologies. The results indicated that farmers have been exposed to at least five new feed technologies and adoption is influenced by education status, sex, age and gender of household head (P < 0.05). Feed technology adoption was in the order: silage 70.83% > sunflower cake 41.66% > legume reinforcement 27.1% > legume trees 16.66% > napier fodder 8.33% > urea treatment 4.17%. Milk yield was affected by month and year (P < 0.05). The impact of adoption was below anticipation, as indicated by lack of economic surpluses. A cost-benefit analysis needs to be carried out for all feed technologies within the study area to streamline viable options.","PeriodicalId":36124,"journal":{"name":"Journal of Applied Animal Nutrition","volume":"102 39","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140379669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-12DOI: 10.1163/2049257x-20231001
D. Thomas, P. Dyer, C.J. Andrews
The high rates of obesity and degenerative joint disease in companion animals has resulted in a demand for dietary supplements that support joint health and reduce inflammation. Polyphenols have received considerable attention in this space, although literature in companion animals is lacking or conflicting. This study determined whether a diet supplemented with olive polyphenol extract had the potential to reduce inflammation and/or bodyweight. Eight senior domestic cats aged 11.01 ± 0.74 years (mean ± standard error of the mean) and weighing 3.6 ± 0.3 kg (mean ± SEM) were used for this study. The cats were fed, ad libitum with a complete (AAFCO) canned diet supplemented with 0.1% olive polyphenol extract for 56 days. Cats were weighed weekly and blood samples taken on day 0 (baseline), 28, and 56 of the study. Biochemistry, haematology, and cytokine (19 cytokines or chemokines) panels were run for each blood sample. While there was an initial aversion to the supplemented diet, intakes of the cats increased, and they consumed enough to meet or exceed their daily maintenance energy requirements by day 10 of the trial. On average, the cats lost approximately 8% of their starting weight over the trial, which was interesting given that feed intake exceeding maintenance energy requirements for most of the study. Whether the decrease in bodyweight was due to seasonal changes, the supplemented diet, or a combination of the two warrants further investigation. There were little to no changes to any of the blood parameters, which was surprising given that previous studies have reported reductions in pro-inflammatory cytokines following polyphenol supplementation. Perhaps a higher concentration of olive polyphenols is required to elicit the anti-inflammatory response observed in other species. A study evaluating the dose-dependent effects of dietary polyphenols on inflammatory and oxidative markers in cats would be valuable in this context.
{"title":"The effect of dietary olive polyphenols on markers of inflammation and bodyweight in senior domestic cats","authors":"D. Thomas, P. Dyer, C.J. Andrews","doi":"10.1163/2049257x-20231001","DOIUrl":"https://doi.org/10.1163/2049257x-20231001","url":null,"abstract":"\u0000The high rates of obesity and degenerative joint disease in companion animals has resulted in a demand for dietary supplements that support joint health and reduce inflammation. Polyphenols have received considerable attention in this space, although literature in companion animals is lacking or conflicting. This study determined whether a diet supplemented with olive polyphenol extract had the potential to reduce inflammation and/or bodyweight. Eight senior domestic cats aged 11.01 ± 0.74 years (mean ± standard error of the mean) and weighing 3.6 ± 0.3 kg (mean ± SEM) were used for this study. The cats were fed, ad libitum with a complete (AAFCO) canned diet supplemented with 0.1% olive polyphenol extract for 56 days. Cats were weighed weekly and blood samples taken on day 0 (baseline), 28, and 56 of the study. Biochemistry, haematology, and cytokine (19 cytokines or chemokines) panels were run for each blood sample. While there was an initial aversion to the supplemented diet, intakes of the cats increased, and they consumed enough to meet or exceed their daily maintenance energy requirements by day 10 of the trial. On average, the cats lost approximately 8% of their starting weight over the trial, which was interesting given that feed intake exceeding maintenance energy requirements for most of the study. Whether the decrease in bodyweight was due to seasonal changes, the supplemented diet, or a combination of the two warrants further investigation. There were little to no changes to any of the blood parameters, which was surprising given that previous studies have reported reductions in pro-inflammatory cytokines following polyphenol supplementation. Perhaps a higher concentration of olive polyphenols is required to elicit the anti-inflammatory response observed in other species. A study evaluating the dose-dependent effects of dietary polyphenols on inflammatory and oxidative markers in cats would be valuable in this context.","PeriodicalId":36124,"journal":{"name":"Journal of Applied Animal Nutrition","volume":"72 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140249543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-16DOI: 10.1163/2049257x-20230005
J.M. Agudelo Rendón, C.M. Bedoya Ortiz, J.E. Vasquez, J.M. Uran Velásquez, A.J. Acevedo Montoya, L.C. Veloza Angulo, J.C. Pareja Arcila, O.A. Sáenz Ruíz, R. R. García, J.F. Naranjo Ramírez
Feed efficiency is a crucial parameter in pig production due to its economic and environmental impact. This trial evaluated feed efficiency in pre-fattening pigs subjected to two diets. Diet 1 (D1) was a commercial pelleted feed supplemented with growth-promoting antibiotics and microencapsulated probiotics (Fortcell FeedTM). Diet 2 (D2) was a commercial pelleted feed supplemented with the microencapsulated probiotics. A total of 280 piglets were randomly assigned into two groups with different diets, using four replicated pens per treatment, with five pigs per pen. Seven independent trials (replications) were done. Each replication lasted for 49 days with two phases, 1 (day 1 to 21) and 2 (day 22 to 49). Pigs were individually weighed at the end of each phase. Food consumption and rejection were recorded weekly to determine weight gain, feed conversion and average feed intake per pen. There was no difference in body weight between pigs fed with the two diets during phases 1 and 2. The average daily gain in phase 1 was 11% lower in animals that received D2 (0.27 kg for D1 vs 0.24 kg for D2; P<0.05). The consumption in phase 2 and overall consumption was higher in pigs fed D1 (P<0.05). Overall feed conversion ratio was not statistically different, but was numerically 9.5% lower in animals that received D2 in Phase 2 (1.43 kg for D1 vs 1.35 kg for D2). It was concluded that supplementation with microencapsulated probiotics provides a suitable option to replace antibiotics in pig production.
{"title":"Evaluation of zootechnical performance of pigs associated with diets based on microencapsulated probiotics with and without growth promoting antibiotics","authors":"J.M. Agudelo Rendón, C.M. Bedoya Ortiz, J.E. Vasquez, J.M. Uran Velásquez, A.J. Acevedo Montoya, L.C. Veloza Angulo, J.C. Pareja Arcila, O.A. Sáenz Ruíz, R. R. García, J.F. Naranjo Ramírez","doi":"10.1163/2049257x-20230005","DOIUrl":"https://doi.org/10.1163/2049257x-20230005","url":null,"abstract":"\u0000Feed efficiency is a crucial parameter in pig production due to its economic and environmental impact. This trial evaluated feed efficiency in pre-fattening pigs subjected to two diets. Diet 1 (D1) was a commercial pelleted feed supplemented with growth-promoting antibiotics and microencapsulated probiotics (Fortcell FeedTM). Diet 2 (D2) was a commercial pelleted feed supplemented with the microencapsulated probiotics. A total of 280 piglets were randomly assigned into two groups with different diets, using four replicated pens per treatment, with five pigs per pen. Seven independent trials (replications) were done. Each replication lasted for 49 days with two phases, 1 (day 1 to 21) and 2 (day 22 to 49). Pigs were individually weighed at the end of each phase. Food consumption and rejection were recorded weekly to determine weight gain, feed conversion and average feed intake per pen. There was no difference in body weight between pigs fed with the two diets during phases 1 and 2. The average daily gain in phase 1 was 11% lower in animals that received D2 (0.27 kg for D1 vs 0.24 kg for D2; P<0.05). The consumption in phase 2 and overall consumption was higher in pigs fed D1 (P<0.05). Overall feed conversion ratio was not statistically different, but was numerically 9.5% lower in animals that received D2 in Phase 2 (1.43 kg for D1 vs 1.35 kg for D2). It was concluded that supplementation with microencapsulated probiotics provides a suitable option to replace antibiotics in pig production.","PeriodicalId":36124,"journal":{"name":"Journal of Applied Animal Nutrition","volume":"79 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140454824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Bachmann, P. Okon, F. Pilger, C. Kuhnitzsch, S. Martens, O. Steinhöfel, A. Zeyner
This study was conducted to examine effects of ensiling, toasting or ensiling plus toasting in partial-crop field peas and faba beans harvested each with 375 g dry matter/kg (Biologische Bundesanstalt, Bundessortenamt und Chemische Industrie (BBCH) scale 79 and 81, respectively) on gas production and post-ruminal crude protein (PRCP) concentration by in vitro incubation in ruminal fluid batch-cultures. The silages made from partial-crop field peas and faba beans (Rostock Model Silages) had a pH of 4.3 and 4.6, respectively, and were not typically lactic acid dominated. The silages remained stable after opening for 100 h (peas) and 168 h (faba beans). Toasting was simulated in a drying oven at 160 °C for 60 min. Post-incubation pH and gas accumulation profiles were little affected by treatment. Ensiling did not alter effective PRCP. Toasting and ensiling plus toasting increased effective PRCP up to 25 and 20%-points in peas and up to 35 and 11%-points in faba beans, respectively. Ensiling increased non-protein nitrogen and soluble protein concentration, whilst toasting decreased soluble protein. Significant correlations existed between protein fraction B3 (neutral detergent-insoluble protein) and effective PRCP (r≥0.84; P<0.05) and fraction C (acid detergent-insoluble protein) and effective PRCP (r≥0.79; P<0.05). Ensiling and toasting both decreased arginine and lysine levels. It was concluded that partial-crop peas and faba beans with BBCH 79 and 81, respectively, can provide readily available nutrients and high-quality fibre in the residual plant. However, preserving by ensiling required balance between the reduction of non-protein nitrogen and fermentability characteristics. Toasting reduced protein solubility and increased PRCP, but it was not clear if PRCP was usable for ruminants or was partially bound into Maillard polymers.
{"title":"Ensiling and thermic treatment effects on ruminal carbohydrate fermentation and post-ruminal crude protein concentration in partial-crop peas and faba beans","authors":"M. Bachmann, P. Okon, F. Pilger, C. Kuhnitzsch, S. Martens, O. Steinhöfel, A. Zeyner","doi":"10.3920/jaan2023.0001","DOIUrl":"https://doi.org/10.3920/jaan2023.0001","url":null,"abstract":"This study was conducted to examine effects of ensiling, toasting or ensiling plus toasting in partial-crop field peas and faba beans harvested each with 375 g dry matter/kg (Biologische Bundesanstalt, Bundessortenamt und Chemische Industrie (BBCH) scale 79 and 81, respectively) on gas production and post-ruminal crude protein (PRCP) concentration by in vitro incubation in ruminal fluid batch-cultures. The silages made from partial-crop field peas and faba beans (Rostock Model Silages) had a pH of 4.3 and 4.6, respectively, and were not typically lactic acid dominated. The silages remained stable after opening for 100 h (peas) and 168 h (faba beans). Toasting was simulated in a drying oven at 160 °C for 60 min. Post-incubation pH and gas accumulation profiles were little affected by treatment. Ensiling did not alter effective PRCP. Toasting and ensiling plus toasting increased effective PRCP up to 25 and 20%-points in peas and up to 35 and 11%-points in faba beans, respectively. Ensiling increased non-protein nitrogen and soluble protein concentration, whilst toasting decreased soluble protein. Significant correlations existed between protein fraction B3 (neutral detergent-insoluble protein) and effective PRCP (r≥0.84; P<0.05) and fraction C (acid detergent-insoluble protein) and effective PRCP (r≥0.79; P<0.05). Ensiling and toasting both decreased arginine and lysine levels. It was concluded that partial-crop peas and faba beans with BBCH 79 and 81, respectively, can provide readily available nutrients and high-quality fibre in the residual plant. However, preserving by ensiling required balance between the reduction of non-protein nitrogen and fermentability characteristics. Toasting reduced protein solubility and increased PRCP, but it was not clear if PRCP was usable for ruminants or was partially bound into Maillard polymers.","PeriodicalId":36124,"journal":{"name":"Journal of Applied Animal Nutrition","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46779927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. M. Tokofai, B.M. Orounladji, K. Idoh, O. Oke, A. Agbonon
Gut health is multifaceted and is largely influenced by the rearing environment and the diet. The use of phytochemicals rich in phenolics and flavonoids can improve the digestive health of chickens and lead to better growth performance. The aim of this study was to examine the effects of dietary Vernonia amygdalina leaf meal (VALM) on growth performance, digestive enzyme activities, absorption function, organ weights and immunity of broilers. Two hundred and forty, one-day-old male Cobb 500 broiler chicks were randomly divided into four groups: an unsupplemented control and VA-1, VA-3 and VA-5 receiving VALM incorporation at concentrations of 1, 3 and 5 g/kg, respectively. Each treatment had six replicates of 10 chickens. On d 42, six chickens per replicate were isolated and euthanised. Digesta from the jejunal segments (10 cm) was collected for analysis of the digestive enzymes. The remaining digesta was then washed out with ice-cold phosphate-buffered saline before the jejunal segments (10 cm) were opened longitudinally to collect the mucosa by scraping. For the preparation of the homogenate, intestinal mucosa samples were homogenised with 154 mmol/l of ice-cold sodium chloride solution and centrifuged at 4 °C for 900 s. To determine immunoglobulins, glutathione and D-xylose, the supernatant was extracted and stored at -20 °C. Supplementation with VALM did not significantly influence the relative weights of organs in the different treatments. However, VALM at 3 g/kg caused a significant increase in amylase and trypsin concentration (P<0.05). Immunoglobulin A and intestinal secretory immunoglobulin G concentrations were significantly improved (P<0.05) in the birds fed 3 g/kg VALM. This supported the premise that 3 g/kg VALM in feed can improve gastric immunity status and digestive enzyme secretion.
{"title":"Effect of Vernonia amygdalina leaf meal on growth performance, intestinal mucosa activity, digestive enzymes, absorption capacity, and immunity in broiler chickens","authors":"B. M. Tokofai, B.M. Orounladji, K. Idoh, O. Oke, A. Agbonon","doi":"10.3920/jaan2022.0006","DOIUrl":"https://doi.org/10.3920/jaan2022.0006","url":null,"abstract":"Gut health is multifaceted and is largely influenced by the rearing environment and the diet. The use of phytochemicals rich in phenolics and flavonoids can improve the digestive health of chickens and lead to better growth performance. The aim of this study was to examine the effects of dietary Vernonia amygdalina leaf meal (VALM) on growth performance, digestive enzyme activities, absorption function, organ weights and immunity of broilers. Two hundred and forty, one-day-old male Cobb 500 broiler chicks were randomly divided into four groups: an unsupplemented control and VA-1, VA-3 and VA-5 receiving VALM incorporation at concentrations of 1, 3 and 5 g/kg, respectively. Each treatment had six replicates of 10 chickens. On d 42, six chickens per replicate were isolated and euthanised. Digesta from the jejunal segments (10 cm) was collected for analysis of the digestive enzymes. The remaining digesta was then washed out with ice-cold phosphate-buffered saline before the jejunal segments (10 cm) were opened longitudinally to collect the mucosa by scraping. For the preparation of the homogenate, intestinal mucosa samples were homogenised with 154 mmol/l of ice-cold sodium chloride solution and centrifuged at 4 °C for 900 s. To determine immunoglobulins, glutathione and D-xylose, the supernatant was extracted and stored at -20 °C. Supplementation with VALM did not significantly influence the relative weights of organs in the different treatments. However, VALM at 3 g/kg caused a significant increase in amylase and trypsin concentration (P<0.05). Immunoglobulin A and intestinal secretory immunoglobulin G concentrations were significantly improved (P<0.05) in the birds fed 3 g/kg VALM. This supported the premise that 3 g/kg VALM in feed can improve gastric immunity status and digestive enzyme secretion.","PeriodicalId":36124,"journal":{"name":"Journal of Applied Animal Nutrition","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42612908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The effects of standard cow, goat and lactose-free cow milk powder on lactose intolerance symptoms and the nutritional status of dogs was studied. Forty adult Springer Spaniels with lactose intolerance were randomly allocated into four groups with ten dogs each and fed one of the milk powders or water for 21 d. The milk powders were reconstituted daily by diluting 10 g milk powder to 60 g water and 2 g milk powder/kg body weight was provided ad libitum and refusals were monitored daily. Lactose intolerance was assessed by faecal composition and pH, water and lactose contents. Biochemical markers for nutritional status were analysed. Feeding intolerance and lactose in faecal samples were observed in dogs fed the standard cow and goat milk powder, but not for the lactose-free milk powder or control groups. The high- and low-density lipoprotein cholesterol increased in all milk powder groups, while there were no other differences in nutritional status measurement. The results suggested that feeding lactose-free milk powder to dogs with lactose intolerance reduced the occurrence of symptoms, thereby enhancing the health and wellbeing of dogs.
{"title":"Effect of lactose-free milk powder on lactose intolerance symptoms and nutritional status of pet dogs","authors":"Y. Wang, H. Lou, A. Turpeinen, L. Liu, F. Xue","doi":"10.3920/jaan2022.0007","DOIUrl":"https://doi.org/10.3920/jaan2022.0007","url":null,"abstract":"The effects of standard cow, goat and lactose-free cow milk powder on lactose intolerance symptoms and the nutritional status of dogs was studied. Forty adult Springer Spaniels with lactose intolerance were randomly allocated into four groups with ten dogs each and fed one of the milk powders or water for 21 d. The milk powders were reconstituted daily by diluting 10 g milk powder to 60 g water and 2 g milk powder/kg body weight was provided ad libitum and refusals were monitored daily. Lactose intolerance was assessed by faecal composition and pH, water and lactose contents. Biochemical markers for nutritional status were analysed. Feeding intolerance and lactose in faecal samples were observed in dogs fed the standard cow and goat milk powder, but not for the lactose-free milk powder or control groups. The high- and low-density lipoprotein cholesterol increased in all milk powder groups, while there were no other differences in nutritional status measurement. The results suggested that feeding lactose-free milk powder to dogs with lactose intolerance reduced the occurrence of symptoms, thereby enhancing the health and wellbeing of dogs.","PeriodicalId":36124,"journal":{"name":"Journal of Applied Animal Nutrition","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43334041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Complete replacement of inorganic trace minerals (ITM) with proteinated organic trace minerals (PTM) at equal or lower inclusion rates was evaluated. One thousand and eight, one-d-old male chicks were divided into 24 pens containing 42 chicks, and randomly allocated to one of the following: T1: control group with ITM supplied at the standard commercial level in Ecuador; T2: PTM at 100% T1; T3: PTM at 66% TI; and T4: PTM at 33% T1. The 42-d experiment employed a three-phase feeding programme (1-14, 15-28 and 29-42 d). Restricted feeding was used to prevent the development of ascites associated with high altitude. At 21 and 42 d of age, Cu, Mn and Zn retention were measured in tibial bone, and Fe in whole blood. Lymphoid organ weights were at 21 and 42 d of age. Antibody titres were measured by ELISA at 42 d of age. Weight gain, feed consumption, feed conversion and mortality were similar among treatments, although were below breed expectations due to feed restriction practices. Blood Fe was not affected by treatment (P<0.05). At both 21 and 42 d of age, minerals in tibia differed (P<0.01), with Mn and Zn concentrations being significantly higher in all PTM groups, compared to ITM control at 42 d. However, at 21 d, Zn was higher for the ITM-fed birds. No differences in lymphoid organ (bursa, thymus, and spleen) weights were observed, or for Gumboro (infectious bursal disease), infections bronchitis virus and reovirus antibody titres. For Newcastle disease virus, T4 birds had significantly lower antibody titres compared to other treatment groups. In conclusion, replacement of inorganic minerals with a proteinated form organic minerals at lower inclusion rates had no negative impact on performance, lymphoid organ weight or antibody titres in broilers raised under commercial conditions of high altitude and restricted feeding.
{"title":"The effect of dietary supplementation of organic trace minerals on performance, mineral retention, lymphoid organs and antibody titres of broilers","authors":"R. Nuñez, S. Elliott, R. Riboty","doi":"10.3920/jaan2022.0002","DOIUrl":"https://doi.org/10.3920/jaan2022.0002","url":null,"abstract":"Complete replacement of inorganic trace minerals (ITM) with proteinated organic trace minerals (PTM) at equal or lower inclusion rates was evaluated. One thousand and eight, one-d-old male chicks were divided into 24 pens containing 42 chicks, and randomly allocated to one of the following: T1: control group with ITM supplied at the standard commercial level in Ecuador; T2: PTM at 100% T1; T3: PTM at 66% TI; and T4: PTM at 33% T1. The 42-d experiment employed a three-phase feeding programme (1-14, 15-28 and 29-42 d). Restricted feeding was used to prevent the development of ascites associated with high altitude. At 21 and 42 d of age, Cu, Mn and Zn retention were measured in tibial bone, and Fe in whole blood. Lymphoid organ weights were at 21 and 42 d of age. Antibody titres were measured by ELISA at 42 d of age. Weight gain, feed consumption, feed conversion and mortality were similar among treatments, although were below breed expectations due to feed restriction practices. Blood Fe was not affected by treatment (P<0.05). At both 21 and 42 d of age, minerals in tibia differed (P<0.01), with Mn and Zn concentrations being significantly higher in all PTM groups, compared to ITM control at 42 d. However, at 21 d, Zn was higher for the ITM-fed birds. No differences in lymphoid organ (bursa, thymus, and spleen) weights were observed, or for Gumboro (infectious bursal disease), infections bronchitis virus and reovirus antibody titres. For Newcastle disease virus, T4 birds had significantly lower antibody titres compared to other treatment groups. In conclusion, replacement of inorganic minerals with a proteinated form organic minerals at lower inclusion rates had no negative impact on performance, lymphoid organ weight or antibody titres in broilers raised under commercial conditions of high altitude and restricted feeding.","PeriodicalId":36124,"journal":{"name":"Journal of Applied Animal Nutrition","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47720006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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