T. Stamenic, M. Petričević, L. Samolovac, S. Sobajic, Bogdan Cekić, M. Gogić, V. Zivkovic
Sodium chloride (NaCl) is one of the most important food additives and it has a significant impact on the sensory and microbiological properties of meat products. According to the Regulation on the quality of ground meat, meat preparations and meat products (Official Gazette of RS 50/2019), the salt content in meat products is not defined. The average NaCl values in these products can be concluded by comparison with available experimental and literature data. The aim of this study was to examine the content of sodium chloride in different meat products from 3 different production batches locally produced. A total of 42 samples were tested: Kulen and Cajna sausage (fermented sausages), dry tenderloin (cured meat products), smoked tenderloin (smoked products), hot dog (finely chopped boiled sausage), Serbian sausage (coarsely chopped boiled sausage) and pancetta (bacon). The highest average sodium chloride content was found in dry tenderloin (4.49g/100 g) while the lowest content was measured in hot dogs (1.88g/100 g). Comparing the obtained values of sodium chloride content with the values obtained by other authors for fermented products (Kulen and Cajna sausage), the tested products had significantly higher values of salt content, while the lowest average content of sodium chloride was found in smoked tenderloin samples. For other products, the content of the tested parameter was similar to the values reported in the literature. After the analysis of available samples, it was determined that the manufacturer adhered to the prescribed amounts of NaCl, according to the recipe, in every product. There weren't any notable deviations in the preparation of monitored meat products.
{"title":"Contents of sodium-chloride in various groups of locally manufactured meat","authors":"T. Stamenic, M. Petričević, L. Samolovac, S. Sobajic, Bogdan Cekić, M. Gogić, V. Zivkovic","doi":"10.2298/bah2103223s","DOIUrl":"https://doi.org/10.2298/bah2103223s","url":null,"abstract":"Sodium chloride (NaCl) is one of the most important food additives and it has\u0000 a significant impact on the sensory and microbiological properties of meat\u0000 products. According to the Regulation on the quality of ground meat, meat\u0000 preparations and meat products (Official Gazette of RS 50/2019), the salt\u0000 content in meat products is not defined. The average NaCl values in these\u0000 products can be concluded by comparison with available experimental and\u0000 literature data. The aim of this study was to examine the content of sodium\u0000 chloride in different meat products from 3 different production batches\u0000 locally produced. A total of 42 samples were tested: Kulen and Cajna sausage\u0000 (fermented sausages), dry tenderloin (cured meat products), smoked\u0000 tenderloin (smoked products), hot dog (finely chopped boiled sausage),\u0000 Serbian sausage (coarsely chopped boiled sausage) and pancetta (bacon). The\u0000 highest average sodium chloride content was found in dry tenderloin\u0000 (4.49g/100 g) while the lowest content was measured in hot dogs (1.88g/100\u0000 g). Comparing the obtained values of sodium chloride content with the values\u0000 obtained by other authors for fermented products (Kulen and Cajna sausage),\u0000 the tested products had significantly higher values of salt content, while\u0000 the lowest average content of sodium chloride was found in smoked tenderloin\u0000 samples. For other products, the content of the tested parameter was similar\u0000 to the values reported in the literature. After the analysis of available\u0000 samples, it was determined that the manufacturer adhered to the prescribed\u0000 amounts of NaCl, according to the recipe, in every product. There weren't\u0000 any notable deviations in the preparation of monitored meat products.","PeriodicalId":249404,"journal":{"name":"Biotehnologija u stocarstvu","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130453292","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}
V. Zivkovic, Č. Radović, M. Gogić, N. Stojiljković, S. Obradović, M. Petričević, N. Delić
The effects of the use of fish meal in the nutrition of weaning piglets were observed. The trial included 80 weaned piglets of the same genotype (Large White x Danish Landrace) distributed in two feeding treatments. In the first period of the experiment, animals were fed during 10 feeding days, with a prestarter mixture containing 21.1/20.8% of the crude protein. The second period lasted for 25 days and piglets were fed with mixture containing also 21.0/21.1% of the crude protein. And in the final period of the experiment, which lasted 22 feeding days, the meals were formulated to contain 19.5/19.9% of the crude protein. The control group was fed with standard farm mixtures, while the trial group were fed with mixtures containing 4/3/2% of fish meal. The obtained results showed that the use of fish meal resulted in better average daily gain and feed conversion in starter period (27-51 day).
{"title":"The effect of fish meal in the nutrition of weaned piglets","authors":"V. Zivkovic, Č. Radović, M. Gogić, N. Stojiljković, S. Obradović, M. Petričević, N. Delić","doi":"10.2298/bah2103195z","DOIUrl":"https://doi.org/10.2298/bah2103195z","url":null,"abstract":"The effects of the use of fish meal in the nutrition of weaning piglets were\u0000 observed. The trial included 80 weaned piglets of the same genotype (Large\u0000 White x Danish Landrace) distributed in two feeding treatments. In the first\u0000 period of the experiment, animals were fed during 10 feeding days, with a\u0000 prestarter mixture containing 21.1/20.8% of the crude protein. The second\u0000 period lasted for 25 days and piglets were fed with mixture containing also\u0000 21.0/21.1% of the crude protein. And in the final period of the experiment,\u0000 which lasted 22 feeding days, the meals were formulated to contain\u0000 19.5/19.9% of the crude protein. The control group was fed with standard\u0000 farm mixtures, while the trial group were fed with mixtures containing\u0000 4/3/2% of fish meal. The obtained results showed that the use of fish meal\u0000 resulted in better average daily gain and feed conversion in starter period\u0000 (27-51 day).","PeriodicalId":249404,"journal":{"name":"Biotehnologija u stocarstvu","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127635507","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}
K. Zeljić, D. Stanojević, V. Bogdanović, C. Mekić, D. Ružić-Muslić, Nevena Maksimović, N. Stojiljković
The objective of this research paper was to estimate heritability coefficients (heritability) of growth traits in the lambs of indigenous Sjenicka Pramenka breed. The research was conducted on a sample which included 421 lambs the descendants of 15 sires and 187 sheep-dams, raised on 3 private farms in Kolubarski district, Serbia. The effect of fixed factors was studied while the values of heritability coefficients were estimated within the frame of SAS software package. A statistically highly significant (**=P<0.01) effect on studied traits had following parameters: sex, year of lambing, type of lambing, farm and method of applied reproductive technology. By means of REML method and using the sire model the values of heritability coefficients were determined for the following traits: average lamb birth weight (BW0), average lamb body weight at 30 days (BW30) and average lamb body weight at 90 days (BW90) being: 0.0355; 0.4642 and 0.3018, respectively.
{"title":"Estimation of growth traits heritability coefficients in sheep","authors":"K. Zeljić, D. Stanojević, V. Bogdanović, C. Mekić, D. Ružić-Muslić, Nevena Maksimović, N. Stojiljković","doi":"10.2298/bah1904347z","DOIUrl":"https://doi.org/10.2298/bah1904347z","url":null,"abstract":"The objective of this research paper was to estimate heritability\u0000 coefficients (heritability) of growth traits in the lambs of indigenous\u0000 Sjenicka Pramenka breed. The research was conducted on a sample which\u0000 included 421 lambs the descendants of 15 sires and 187 sheep-dams, raised on\u0000 3 private farms in Kolubarski district, Serbia. The effect of fixed factors\u0000 was studied while the values of heritability coefficients were estimated\u0000 within the frame of SAS software package. A statistically highly significant\u0000 (**=P<0.01) effect on studied traits had following parameters: sex, year of\u0000 lambing, type of lambing, farm and method of applied reproductive\u0000 technology. By means of REML method and using the sire model the values of\u0000 heritability coefficients were determined for the following traits: average\u0000 lamb birth weight (BW0), average lamb body weight at 30 days (BW30) and\u0000 average lamb body weight at 90 days (BW90) being: 0.0355; 0.4642 and 0.3018,\u0000 respectively.","PeriodicalId":249404,"journal":{"name":"Biotehnologija u stocarstvu","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123562995","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}
V. Pantelić, D. Nikšić, Nevena Maksimović, Dusica Ostojic-Andric, M. Lazarević, N. Micic, M. Marinković
The main goal of this research was to examine, using modern methods, the variability of phenotypic correlations of production performances and reproductive properties of Simmental cows reared on the farms of individual agricultural producers, in different breeding areas of the Republic of Serbia. The study of phenotypic correlations of milk performance and fertility properties in different regions of Serbia was carried out on a total of 3.056 primi parous Simmental heifers under control, with lactations completed within one year. The examined animals were reared on different individual farms, and mainly in very different conditions of housing and nutrition, depending on the breeding area. The study of phenotypic correlations included the following milk performance traits: milk yield, milk fat content, milk fat yield, yield of 4% corrected milk; and fertility properties: age at first calving and service period. The results of the study among other things indicate that although the phenotypic correlations between the fertility and milk performance properties show different degrees of variation, they should be taken into account in the final assessment of the breeding value of the animal, so that the breeding selection programs are more comprehensively designes.
{"title":"Phenotypic correlation of traits of production and reproduction of Simmental cows in different regions of Serbia","authors":"V. Pantelić, D. Nikšić, Nevena Maksimović, Dusica Ostojic-Andric, M. Lazarević, N. Micic, M. Marinković","doi":"10.2298/bah1903219p","DOIUrl":"https://doi.org/10.2298/bah1903219p","url":null,"abstract":"The main goal of this research was to examine, using modern methods, the\u0000 variability of phenotypic correlations of production performances and\u0000 reproductive properties of Simmental cows reared on the farms of individual\u0000 agricultural producers, in different breeding areas of the Republic of\u0000 Serbia. The study of phenotypic correlations of milk performance and\u0000 fertility properties in different regions of Serbia was carried out on a\u0000 total of 3.056 primi parous Simmental heifers under control, with lactations\u0000 completed within one year. The examined animals were reared on different\u0000 individual farms, and mainly in very different conditions of housing and\u0000 nutrition, depending on the breeding area. The study of phenotypic\u0000 correlations included the following milk performance traits: milk yield,\u0000 milk fat content, milk fat yield, yield of 4% corrected milk; and fertility\u0000 properties: age at first calving and service period. The results of the\u0000 study among other things indicate that although the phenotypic correlations\u0000 between the fertility and milk performance properties show different degrees\u0000 of variation, they should be taken into account in the final assessment of\u0000 the breeding value of the animal, so that the breeding selection programs\u0000 are more comprehensively designes.","PeriodicalId":249404,"journal":{"name":"Biotehnologija u stocarstvu","volume":"395 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124423403","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. Petričević, D. Živković, Ostojic Andric, D. Nikšić, V. Petričević, M. Gogić, Violeta Mandić
The trial was designed in order to examine the impact of flax seed in the nutrition of young cattle/bulls, in the final stage of the fattening. In the trial, 30 bulls of Simmental breed of uniform initial weight were selected, divided into 2 groups (control and experimental). The control animal group did not consume flax seed as a food supplement. Cattle of the experimental group consumed flax seed in an amount of 3.75% (300 g per day) of concentrated meal in the last 90 days of fattening, i.e. 300 g per day. The study included the examination of the fattening performance, slaughter traits and the composition of the bovine carcass. After slaughtering, warm carcass sides, with and without kidneys, were measured individually. Subsequent to period of cooling, the left carcass side it was cut into the main carcass parts according to the Rulebook. The results of the study showed that the addition of flax seed in the diet did not have a statistically significant effect on the body weight of bulls at the end of the trial. It was found that the addition of flax seed in the feed during the final stage of fattening did not have an impact on the differences in the average overall gain of bulls and the feed conversion ratio. Based on the data obtained by cutting of carcass sides to main parts, it was established that feeding with flax seeds had no significant effect on the share of carcass parts.
该试验旨在研究亚麻籽对育肥后期幼牛/公牛营养的影响。试验选用初始体重均匀的西门塔尔种公牛30头，分为对照组和试验组。对照组不食用亚麻籽作为食物补充。试验组牛在育肥的最后90 d内，以3.75% (300 g / d)的亚麻籽浓缩粕为饲粮，即300 g / d。本研究包括对牛的增肥性能、屠宰性状和胴体成分的检验。屠宰后，分别测量带肾和不带肾的热胴体侧面。随后经过一段时间的冷却，将左胴体侧按规程切成主要胴体部分。研究结果表明，日粮中添加亚麻籽对试验结束时公牛的体重没有统计学意义上的显著影响。结果表明，育肥末期饲料中添加亚麻籽对公牛平均全身增重和饲料系数的差异不产生影响。根据胴体侧面与主要部位的切割数据，确定饲喂亚麻籽对胴体部位的比例无显著影响。
{"title":"Study of fattening and slaughter traits of cattle under the influence of flax seed based nutrition","authors":"M. Petričević, D. Živković, Ostojic Andric, D. Nikšić, V. Petričević, M. Gogić, Violeta Mandić","doi":"10.2298/BAH1902179P","DOIUrl":"https://doi.org/10.2298/BAH1902179P","url":null,"abstract":"The trial was designed in order to examine the impact of flax seed in the\u0000 nutrition of young cattle/bulls, in the final stage of the fattening. In the\u0000 trial, 30 bulls of Simmental breed of uniform initial weight were selected,\u0000 divided into 2 groups (control and experimental). The control animal group\u0000 did not consume flax seed as a food supplement. Cattle of the experimental\u0000 group consumed flax seed in an amount of 3.75% (300 g per day) of\u0000 concentrated meal in the last 90 days of fattening, i.e. 300 g per day. The\u0000 study included the examination of the fattening performance, slaughter\u0000 traits and the composition of the bovine carcass. After slaughtering, warm\u0000 carcass sides, with and without kidneys, were measured individually.\u0000 Subsequent to period of cooling, the left carcass side it was cut into the\u0000 main carcass parts according to the Rulebook. The results of the study\u0000 showed that the addition of flax seed in the diet did not have a\u0000 statistically significant effect on the body weight of bulls at the end of\u0000 the trial. It was found that the addition of flax seed in the feed during\u0000 the final stage of fattening did not have an impact on the differences in\u0000 the average overall gain of bulls and the feed conversion ratio. Based on\u0000 the data obtained by cutting of carcass sides to main parts, it was\u0000 established that feeding with flax seeds had no significant effect on the\u0000 share of carcass parts.","PeriodicalId":249404,"journal":{"name":"Biotehnologija u stocarstvu","volume":"28 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123600021","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}
V. Pantelić, D. Nikšić, M. Lazarević, N. Micic, M. Marinković, Nevena Maksimović, L. Samolovac
The Simmental breed of cattle is mostly reared in the central part of the Republic of Serbia, where it makes up about 80% of all breeds. In areas of more intensive cattle production, populations of cattle with pronounced milk yield are reared. In more extensive, as well as hilly and mountainous areas, somewhat less productive animals are raised. The main goal of this study was to examine the variability of genetic correlations of milk and fertility traits on the farms of individual agricultural producers using modern methods, depending on the breeding area, i.e. the region in which they are bred and reared. This study included 2589 controlled Simmental heifers, with lactations concluded during one year. All first calving heifers were housed and reared on agricultural family farms in the area of Central Serbia. The paper examines genetic correlations between the following traits of milk yield and fertility: duration of lactation, milk yield in standard lactation, milk fat content in standard lactation, milk fat yield in standard lactation, yield of 4% FCM in standard lactation, age at first calving, duration of service period. The results of the study of genetic correlations were obtained using mixed LSMLMW models (Harvey 1990). The examined genetic correlations of milk yield and fertility traits in Simmental cows showed pronounced variability depending on the breeding area where the cows are reared.
{"title":"Variability of genetic correlations of milk yield and fertility traits in Simmental cows in different regions of Serbia","authors":"V. Pantelić, D. Nikšić, M. Lazarević, N. Micic, M. Marinković, Nevena Maksimović, L. Samolovac","doi":"10.2298/BAH2101017P","DOIUrl":"https://doi.org/10.2298/BAH2101017P","url":null,"abstract":"The Simmental breed of cattle is mostly reared in the central part of the\u0000 Republic of Serbia, where it makes up about 80% of all breeds. In areas of\u0000 more intensive cattle production, populations of cattle with pronounced milk\u0000 yield are reared. In more extensive, as well as hilly and mountainous areas,\u0000 somewhat less productive animals are raised. The main goal of this study was\u0000 to examine the variability of genetic correlations of milk and fertility\u0000 traits on the farms of individual agricultural producers using modern\u0000 methods, depending on the breeding area, i.e. the region in which they are\u0000 bred and reared. This study included 2589 controlled Simmental heifers, with\u0000 lactations concluded during one year. All first calving heifers were housed\u0000 and reared on agricultural family farms in the area of Central Serbia. The\u0000 paper examines genetic correlations between the following traits of milk\u0000 yield and fertility: duration of lactation, milk yield in standard\u0000 lactation, milk fat content in standard lactation, milk fat yield in\u0000 standard lactation, yield of 4% FCM in standard lactation, age at first\u0000 calving, duration of service period. The results of the study of genetic\u0000 correlations were obtained using mixed LSMLMW models (Harvey 1990). The\u0000 examined genetic correlations of milk yield and fertility traits in\u0000 Simmental cows showed pronounced variability depending on the breeding area\u0000 where the cows are reared.","PeriodicalId":249404,"journal":{"name":"Biotehnologija u stocarstvu","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115223819","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}
Dino Haracic, S. Šerić-Haračić, E. Šaljić, N. Fejzic
Mastitis is one of the most important diseases in dairy cow farms and one of the most common cause for antibiotic treatment. Aims of this study were: to investigate frequency and trends of clinical mastitis in cows on a large dairy farm, describe clinical characteristics of mastitis and investigate causative infectious agents in selected cases alongside antimicrobial resistance. In our study we used farm records for clinical mastitis recorded for period 2016 and 2017. We also used results of the regular on farm testing of the somatic cell count for 2017. Samples of milk from all clinical mastitis cases were taken during November and December 2017 in order to investigate causative agents and their antimicrobial resistance. Occurrence of clinical mastitis was 205 cases (47.7%) in 2017 compared to 93 cases (29.7%) recorded in 2016. In 2017 reoccurrence of clinical mastitis in same animal was recorded for 93 cows (45.4%). In 2016 reoccurrence of clinical mastitis in same animal was recoded for 49 cows (29.7%). Average course of clinical mastitis in 2016 was 3 days, while in 2017 4.5 days (continuous days of recording a case in farm records). Somatic cell count in more than half of tested animals was higher than 200.000 SC/ml according to the measurements from February and July 2017 (number of cows tested 236 and 169, respectively). Out of 23 milk samples, 20 had bacteriological growth. In 9 samples we identified S.aureus, in 6 streptococcus spp., in 4 coagulase negative staphylococci (CNS) and one sample contained E.coli. Most common resistance was found for lincomycin-spectinomycin (100%) gentamicin (92%), followed by cefquinome (65%), linkomycin (53%) and erythromycin (47%). Isolates of S.aureus were resistant on the largest number of investigated antibiotics.
{"title":"Farm records in investigation of epidemiology, symptomatology and causes of clinical mastitis in a dairy farm","authors":"Dino Haracic, S. Šerić-Haračić, E. Šaljić, N. Fejzic","doi":"10.2298/BAH1901097H","DOIUrl":"https://doi.org/10.2298/BAH1901097H","url":null,"abstract":"Mastitis is one of the most important diseases in dairy cow farms and one of\u0000 the most common cause for antibiotic treatment. Aims of this study were: to\u0000 investigate frequency and trends of clinical mastitis in cows on a large\u0000 dairy farm, describe clinical characteristics of mastitis and investigate\u0000 causative infectious agents in selected cases alongside antimicrobial\u0000 resistance. In our study we used farm records for clinical mastitis\u0000 recorded for period 2016 and 2017. We also used results of the regular on\u0000 farm testing of the somatic cell count for 2017. Samples of milk from all\u0000 clinical mastitis cases were taken during November and December 2017 in\u0000 order to investigate causative agents and their antimicrobial resistance. \u0000 Occurrence of clinical mastitis was 205 cases (47.7%) in 2017 compared to 93\u0000 cases (29.7%) recorded in 2016. In 2017 reoccurrence of clinical mastitis in\u0000 same animal was recorded for 93 cows (45.4%). In 2016 reoccurrence of\u0000 clinical mastitis in same animal was recoded for 49 cows (29.7%). Average\u0000 course of clinical mastitis in 2016 was 3 days, while in 2017 4.5 days\u0000 (continuous days of recording a case in farm records). Somatic cell count in\u0000 more than half of tested animals was higher than 200.000 SC/ml according to\u0000 the measurements from February and July 2017 (number of cows tested 236 and\u0000 169, respectively). Out of 23 milk samples, 20 had bacteriological growth.\u0000 In 9 samples we identified S.aureus, in 6 streptococcus spp., in 4 coagulase\u0000 negative staphylococci (CNS) and one sample contained E.coli. Most common\u0000 resistance was found for lincomycin-spectinomycin (100%) gentamicin (92%),\u0000 followed by cefquinome (65%), linkomycin (53%) and erythromycin (47%).\u0000 Isolates of S.aureus were resistant on the largest number of investigated\u0000 antibiotics.","PeriodicalId":249404,"journal":{"name":"Biotehnologija u stocarstvu","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127232072","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}
J. Rayaissé, B. Bauer, Ivana Pavlović, B. Bingulac, L. Jovanović, D. Beltrán-Alcrudo
Lumpy skin disease (LSD) is among a number of vector-borne diseases (VBDs) threatening the Balkans and therefore, preventing feeding of insects on cattle would reduce the spread of VBDs. In order to test the efficiency of Livestock Protective Fences (LPF) in the protection of dairy cattle from insect bites, a case-control study was conducted, in the districts of Nisava, Pirot and Pcinja, Southern Serbia. It consisted in comparing the number of biting flies collected within time, between 10 farms protected with LPF and 10 non protected ones. The insects were collected using two types of traps; the monoconical Vavoua trap set outside in between forested areas or rivers and the actual farm, and the BGsentinel trap baited with CO2, placed in proximity of the cattle but outside the stable. Vectors were collected every 15 days for 48 hours from May to October 2018 and kept in vials containing 70% of ethanol. Catches per trap were separately stored and for each trap, insects were classified according to species and sex and then counted. Data on milk parameters were analyzed separately, on data collected within protected farms, before and after the LPF deployment, and on data without protection at all. It was not possible to detect a direct impact of LPF on vector densities but the number of bacteria colonies (CFU) values were reduced. Some corrections/adaption in the methodology used may lead to better impact.
{"title":"Livestock Protective Fencing (LPF) to protect dairy cattle against vectors in Serbia - project processes and methodology","authors":"J. Rayaissé, B. Bauer, Ivana Pavlović, B. Bingulac, L. Jovanović, D. Beltrán-Alcrudo","doi":"10.2298/bah2001115r","DOIUrl":"https://doi.org/10.2298/bah2001115r","url":null,"abstract":"Lumpy skin disease (LSD) is among a number of vector-borne diseases (VBDs)\u0000 threatening the Balkans and therefore, preventing feeding of insects on\u0000 cattle would reduce the spread of VBDs. In order to test the efficiency of\u0000 Livestock Protective Fences (LPF) in the protection of dairy cattle from\u0000 insect bites, a case-control study was conducted, in the districts of\u0000 Nisava, Pirot and Pcinja, Southern Serbia. It consisted in comparing the\u0000 number of biting flies collected within time, between 10 farms protected\u0000 with LPF and 10 non protected ones. The insects were collected using two\u0000 types of traps; the monoconical Vavoua trap set outside in between forested\u0000 areas or rivers and the actual farm, and the BGsentinel trap baited with\u0000 CO2, placed in proximity of the cattle but outside the stable. Vectors were\u0000 collected every 15 days for 48 hours from May to October 2018 and kept in\u0000 vials containing 70% of ethanol. Catches per trap were separately stored and\u0000 for each trap, insects were classified according to species and sex and then\u0000 counted. Data on milk parameters were analyzed separately, on data collected\u0000 within protected farms, before and after the LPF deployment, and on data\u0000 without protection at all. It was not possible to detect a direct impact of\u0000 LPF on vector densities but the number of bacteria colonies (CFU) values\u0000 were reduced. Some corrections/adaption in the methodology used may lead to\u0000 better impact.","PeriodicalId":249404,"journal":{"name":"Biotehnologija u stocarstvu","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127313017","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 aim of this study was to evaluate the effects of Silybum marianum oil extraction byproduct (SMOEB) supplementation on performance and some physiological parameters of broiler chickens. Treatments were consisted of different levels of SMOEB (0%, 3%, 6%, 9% and 12% of the diet). From day 8-21, dietary inclusion of 3%, 9% and 12% of SMOEB into the diet increased (P<0.05) feed intake and body weight gain of broilers. From day 22-42, increasing SMOEB level increased feed intake linearly. Increasing SMOEB level increased FI linearly and quadratically from day 8-42. On day 16, a higher value was recorded for wingweb thickness in birds that were received 9% of SMOEB in the diet only at 24h following the PHA-P injection (P<0.05). The higher value was observed for CBH response at 12 and 24h post-injection on day 21and day 35 in broilers were fed by 9% of SMOEB supplemented into the diet for toe web thickness. It can be concluded that SMOEB could be added to the diet of broilers without any adverse effect on performance parameters and also, it can improve immune parameters of birds at levels up to 12%.
{"title":"Effect of dietary inclusion of Silybum marianum oil extraction byproduct on growth performance, immune response and cecal microbial population of broiler chicken","authors":"Mehdi Shahsavan, S. Salari, M. Ghorbani","doi":"10.2298/bah2101045s","DOIUrl":"https://doi.org/10.2298/bah2101045s","url":null,"abstract":"The aim of this study was to evaluate the effects of Silybum marianum oil\u0000 extraction byproduct (SMOEB) supplementation on performance and some\u0000 physiological parameters of broiler chickens. Treatments were consisted of\u0000 different levels of SMOEB (0%, 3%, 6%, 9% and 12% of the diet). From day\u0000 8-21, dietary inclusion of 3%, 9% and 12% of SMOEB into the diet increased\u0000 (P<0.05) feed intake and body weight gain of broilers. From day 22-42,\u0000 increasing SMOEB level increased feed intake linearly. Increasing SMOEB\u0000 level increased FI linearly and quadratically from day 8-42. On day 16, a\u0000 higher value was recorded for wingweb thickness in birds that were received\u0000 9% of SMOEB in the diet only at 24h following the PHA-P injection (P<0.05).\u0000 The higher value was observed for CBH response at 12 and 24h post-injection\u0000 on day 21and day 35 in broilers were fed by 9% of SMOEB supplemented into\u0000 the diet for toe web thickness. It can be concluded that SMOEB could be\u0000 added to the diet of broilers without any adverse effect on performance\u0000 parameters and also, it can improve immune parameters of birds at levels up\u0000 to 12%.","PeriodicalId":249404,"journal":{"name":"Biotehnologija u stocarstvu","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126156350","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}
One of the most phenotypically attractive breeds in Bulgaria is the local Stara Zagora sheep. It is a local - indigenous breed specialized in dairy direction. In recent years, this valuable genetic resource is on the verge of being lost as the breed is threatened with extinction. The aim of the study is to monitor the genetic and phenotypic parameters of the main reproductive and productive traits in local Stara Zagora sheep.The research includes a total of 9495 ewes of the local Stara Zagora breed reared in 15 farms, produced during the period from 2011 to 2020 including. The studied traits were: fertility - biological of the first, second and third lambing, milk yield for a 120-day period of first, second and third standard lactation and live weight of different age categories. The statistical model that we used was based on the model of animal /Animal model/, using the software product PEST and VCE (Groeneveld), SYSTST 13 and SPSS for Descripive statistics. The average phenotypic values of the traits: are respectively - fertility of 1st - 113%, 2nd - 125% and 3rd - 129% lambing; live weight of weaning - 29.79 kg, at 18 months - 63.87 kg, and at 2.5 years 72.92 kg; milk yield of the 1st - 98.37 l; 2nd - 104.60 l and 3rd - 108.80 l. lactation. Heritability (h?) in the main selection traits milk yield of the first, second and third lactation is characterized by moderate values - 0.191; 0.225 and 0.184, respectively, and we report from low to moderate values of h? on the fertility in all three studied groups - fertility in the 1st - 0.183; 2nd - 0.149 and 3rd lambing 0.137. Milk yield is in high positive correlation and with a high statistical significance at different stages of lactation, between the 1st and 2nd - 0.849, between the 2nd and 3rd - 0.628 and between the 1st and 3rd - 0.447.
{"title":"Future perspectives in breeding the indigenous local Stara Zagora sheep and improving the phenotypic and genetic parameters of the breed","authors":"G. Kalaydzhiev","doi":"10.2298/bah2201017k","DOIUrl":"https://doi.org/10.2298/bah2201017k","url":null,"abstract":"One of the most phenotypically attractive breeds in Bulgaria is the local\u0000 Stara Zagora sheep. It is a local - indigenous breed specialized in dairy\u0000 direction. In recent years, this valuable genetic resource is on the verge\u0000 of being lost as the breed is threatened with extinction. The aim of the\u0000 study is to monitor the genetic and phenotypic parameters of the main\u0000 reproductive and productive traits in local Stara Zagora sheep.The research\u0000 includes a total of 9495 ewes of the local Stara Zagora breed reared in 15\u0000 farms, produced during the period from 2011 to 2020 including. The studied\u0000 traits were: fertility - biological of the first, second and third lambing,\u0000 milk yield for a 120-day period of first, second and third standard\u0000 lactation and live weight of different age categories. The statistical model\u0000 that we used was based on the model of animal /Animal model/, using the\u0000 software product PEST and VCE (Groeneveld), SYSTST 13 and SPSS for\u0000 Descripive statistics. The average phenotypic values of the traits: are\u0000 respectively - fertility of 1st - 113%, 2nd - 125% and 3rd - 129% lambing;\u0000 live weight of weaning - 29.79 kg, at 18 months - 63.87 kg, and at 2.5 years\u0000 72.92 kg; milk yield of the 1st - 98.37 l; 2nd - 104.60 l and 3rd - 108.80\u0000 l. lactation. Heritability (h?) in the main selection traits milk yield of\u0000 the first, second and third lactation is characterized by moderate values -\u0000 0.191; 0.225 and 0.184, respectively, and we report from low to moderate\u0000 values of h? on the fertility in all three studied groups - fertility in the\u0000 1st - 0.183; 2nd - 0.149 and 3rd lambing 0.137. Milk yield is in high\u0000 positive correlation and with a high statistical significance at different\u0000 stages of lactation, between the 1st and 2nd - 0.849, between the 2nd and\u0000 3rd - 0.628 and between the 1st and 3rd - 0.447.","PeriodicalId":249404,"journal":{"name":"Biotehnologija u stocarstvu","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115179522","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：