Pub Date : 2021-09-27DOI: 10.17533/udea.rccp.v35n3a01
L. T. Rodríguez-Ortega, A. Rodríguez-Ortega, Fredy Mera-Zúñiga, A. Pro-Martínez, F. Hernández-Guzmán, E. Sosa-Montes, F. González-Cerón, H. Leyva-Jimenez
Background: Nutrient restriction is a common strategy to prevent metabolic disorders in fast growing 35 broiler chickens, but limited information is available regarding the impact of low protein and energy 36 diets in leg abnormalities. Objective: Two experiments were conducted to evaluate the effect of 37 varying dietary crude protein (CP) and metabolizable energy (ME) levels on gastrocnemius tendon 38 (GTeBS) and tibia (TiBS) breaking strength, gait score (GS) and valgus/varus angulation (VAng). 39 Methods: In experiment 1, eight-d-old Ross 308 broilers (n=90) were randomly assigned into three 40 treatments: 13/2,900 (13% CP and 2,900 kcal ME kg -1 of diet), 17/3,000 (17% CP and 3,000 kcal ME 41 kg -1 of diet), and 21/3,025 or control (21% CP and 3,025 kcal ME kg -1 of diet). In experiment 2, six- d-old Ross 308 chickens (n=192) were randomly distributed into two treatments: 16/3,000; 16% CP 43 and 3,000 kcal ME kg -1 of diet and 21/3,000 or control; 21% CP and 3,000 kcal ME kg -1 of diet. In 44 both experiments, the data were analyzed as one-way ANOVA. Results: In experiment 1, broilers in 45 the 17/3,000 and control treatments had similar (p>0.05) GTeBS (202 and 224 N, respectively), and 46 TiBS (338 and 332 N, respevtively). Birds in the 13/2,900 treatment showed higher GS (lower 47 walking ability; 80% of birds with score>3), and greater VAng (53% of birds with score>2) than 48 broilers in the control treatment (0% of birds with GS score>3 and 0% of birds with VAng score>2). 49 Experiment 2, broilers in the 16/3,000 showed similar VAng, GS and TiBS than birds in the control 50 treatment. However, birds in the 16/3,000 treatment showed lower (-26%) GTeBS than birds in the 51 control treatment (p<0.05). Conclusions: Feeding broilers with 16% CP and 3,000 kcal ME kg -1 of 52 diet did not affect tibia breaking strength, gait score and valgus/varus angulation. A diet containing 53 16% CP or less and 2,900-3,000 kcal ME kg -1 reduces tendon and tibia breaking strength.
背景：限制营养是预防快速生长的35只肉鸡代谢紊乱的常见策略，但关于低蛋白和低能量饮食对腿部异常的影响，目前的信息有限。目的：通过两个实验评估37种不同日粮粗蛋白（CP）和代谢能（ME）水平对腓肠肌腱38（GTeBS）和胫骨（TiBS）断裂强度、步态评分（GS）和外翻/内翻（VAng）的影响。39方法：在实验1中，将8日龄Ross 308肉鸡（n=90）随机分为三个40个处理：13/2900（13%CP和2900 kcal ME kg-1日粮）、17/3000（17%CP和3000 kcal ME 41 kg-1）和21/3025或对照（21%CP和3025 kcal ME kg-1日日粮）。在实验2中，将6日龄的Ross 308鸡（n=192）随机分为两个处理：16/3000；16%CP 43和3000kcal ME kg-1的日粮和21/3000或对照；21%CP和3000kcal ME kg-1日粮。在44个两个实验中，数据均采用单因素方差分析法进行分析。结果：在试验1中，45只17/3000和对照组肉鸡的GTeBS（分别为202和224 N）和46只TiBS（分别为338和332 N）相似（p>0.05）。13/2900处理中的鸟类表现出比对照处理中的48只肉鸡更高的GS（较低的47行走能力；得分>3的鸟类中有80%）和更大的VAng（得分>2的鸟类的53%）（GS得分>3和VAng得分>2）。49试验2，16/3000处理的肉鸡表现出与对照50处理的肉鸡相似的VAng、GS和TiBS。然而，16/3000处理的肉鸡的GTeBS比51对照处理的肉鸡低（-26%）（p<0.05）。结论：用16%CP和3000kcal ME kg-1/52日粮喂养肉鸡不会影响胫骨断裂强度、步态评分和外翻/内翻角度。含53 16%或更低CP和2900-3000 kcal ME kg-1的饮食可降低肌腱和胫骨的断裂强度。
{"title":"Effect of varying dietary crude protein and metabolizable energy levels on leg abnormalities and performance in broiler chickens","authors":"L. T. Rodríguez-Ortega, A. Rodríguez-Ortega, Fredy Mera-Zúñiga, A. Pro-Martínez, F. Hernández-Guzmán, E. Sosa-Montes, F. González-Cerón, H. Leyva-Jimenez","doi":"10.17533/udea.rccp.v35n3a01","DOIUrl":"https://doi.org/10.17533/udea.rccp.v35n3a01","url":null,"abstract":"Background: Nutrient restriction is a common strategy to prevent metabolic disorders in fast growing 35 broiler chickens, but limited information is available regarding the impact of low protein and energy 36 diets in leg abnormalities. Objective: Two experiments were conducted to evaluate the effect of 37 varying dietary crude protein (CP) and metabolizable energy (ME) levels on gastrocnemius tendon 38 (GTeBS) and tibia (TiBS) breaking strength, gait score (GS) and valgus/varus angulation (VAng). 39 Methods: In experiment 1, eight-d-old Ross 308 broilers (n=90) were randomly assigned into three 40 treatments: 13/2,900 (13% CP and 2,900 kcal ME kg -1 of diet), 17/3,000 (17% CP and 3,000 kcal ME 41 kg -1 of diet), and 21/3,025 or control (21% CP and 3,025 kcal ME kg -1 of diet). In experiment 2, six- d-old Ross 308 chickens (n=192) were randomly distributed into two treatments: 16/3,000; 16% CP 43 and 3,000 kcal ME kg -1 of diet and 21/3,000 or control; 21% CP and 3,000 kcal ME kg -1 of diet. In 44 both experiments, the data were analyzed as one-way ANOVA. Results: In experiment 1, broilers in 45 the 17/3,000 and control treatments had similar (p>0.05) GTeBS (202 and 224 N, respectively), and 46 TiBS (338 and 332 N, respevtively). Birds in the 13/2,900 treatment showed higher GS (lower 47 walking ability; 80% of birds with score>3), and greater VAng (53% of birds with score>2) than 48 broilers in the control treatment (0% of birds with GS score>3 and 0% of birds with VAng score>2). 49 Experiment 2, broilers in the 16/3,000 showed similar VAng, GS and TiBS than birds in the control 50 treatment. However, birds in the 16/3,000 treatment showed lower (-26%) GTeBS than birds in the 51 control treatment (p<0.05). Conclusions: Feeding broilers with 16% CP and 3,000 kcal ME kg -1 of 52 diet did not affect tibia breaking strength, gait score and valgus/varus angulation. A diet containing 53 16% CP or less and 2,900-3,000 kcal ME kg -1 reduces tendon and tibia breaking strength.","PeriodicalId":49613,"journal":{"name":"Revista Colombiana De Ciencias Pecuarias","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41399273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-27DOI: 10.17533/udea.rccp.v35n2a05
Á. Ríos-Utrera, J. P. Zárate-Martínez, V. Vega-Murillo, J. F. Enríquez-Quiroz, M. Montero-Lagunes, F. Barradas-Piña, Martha E Valdovinos-Terán
Effect of the percentage of Bos taurus inheritance on the 41 fertility of Holstein x Zebu and Brown Swiss x Zebu crossbred cows in the Mexican tropics. Rev Colomb Abstract reproduction. Objective: To assess the effect of the proportion of Bos taurus (Bt) genes 51 on the reproductive performance of Holstein × Zebu (HZ) and Brown Swiss × Zebu (BZ) 52 crossbred cows, and to compare the reproductive performance of these genotypes in a 53 dual-purpose production system. Methods: Cows were maintained in a rotational grazing 54 system on African Star grass ( Cynodon plectostachyus ) in Veracruz, Mexico. Cows were 55 milked twice daily. Calves were kept tied on one side of their dams, while the cows were 56 milked. Results: Percentage of Bt genes did not affect (p>0.05) any fertility trait (age at 57 first calving, days to first service after calving, services per conception, first service 58 conception rate, days open until conception, gestation length and calving interval) of BZ 59 cows. In contrast, HZ cows with less than 75% of Holstein (H) genes were 0.3 years 60 younger (p<0.05) at first calving and had 39.8 fewer days open (p<0.05) than HZ cows 61 with 75% or more of H genes. In addition, the calving interval of HZ cows with less than 62 75% of H genes was 44.8 days shorter (p<0.05) than that of HZ cows with 75% or more 63 of H genes. HZ cows had five fewer days pregnant and were 22.8 kg heavier at calving 64 (p<0.05) than BZ cows. Conclusions: The effect of the percentage of Bt genes on cow 65 fertility depended on the dairy breed used. In general, BZ and HZ cows had similar 66 reproductive performance.
墨西哥热带地区荷斯坦×泽布和褐瑞×泽布杂交母牛遗传率对41育性的影响。Rev Colomb抽象复制。目的:研究牛牛Bt基因51的比例对荷斯坦× Zebu (HZ)和布朗瑞士× Zebu (BZ) 52杂交奶牛繁殖性能的影响，并比较这两种基因型在53种双用途生产体系中的繁殖性能。方法:在墨西哥韦拉克鲁斯州以非洲星草(Cynodon plectostachyus)轮牧系统饲养奶牛。奶牛每天挤两次奶。小牛被拴在水坝的一侧，奶牛则被挤奶。结果:Bt基因百分比对bz59奶牛的任何生育性状(产犊年龄57岁、产犊后至首胎天数、单胎次数、首胎58受胎率、开胎天数、妊娠期长短和产犊间隔)均无显著影响(p < 0.05)。相比之下，荷斯坦(H)基因含量低于75%的HZ奶牛在产犊时比H基因含量在75%及以上的HZ奶牛年轻0.3岁(p<0.05)，产仔天数减少39.8天(p<0.05)。H基因含量小于62.75%的奶牛产犊间隔比H基因含量大于或等于63的奶牛短44.8 d (p<0.05)。HZ奶牛妊娠天数比BZ奶牛少5天，产犊64时重22.8 kg (p<0.05)。结论:Bt基因百分比对奶牛生育能力的影响取决于所使用的奶牛品种。总体而言，BZ和HZ奶牛的繁殖性能相近。
{"title":"Effect of the percentage of Bos taurus inheritance on the fertility of Holstein×Zebu and Brown Swiss×Zebu crossbred cows in the Mexican tropics","authors":"Á. Ríos-Utrera, J. P. Zárate-Martínez, V. Vega-Murillo, J. F. Enríquez-Quiroz, M. Montero-Lagunes, F. Barradas-Piña, Martha E Valdovinos-Terán","doi":"10.17533/udea.rccp.v35n2a05","DOIUrl":"https://doi.org/10.17533/udea.rccp.v35n2a05","url":null,"abstract":"Effect of the percentage of Bos taurus inheritance on the 41 fertility of Holstein x Zebu and Brown Swiss x Zebu crossbred cows in the Mexican tropics. Rev Colomb Abstract reproduction. Objective: To assess the effect of the proportion of Bos taurus (Bt) genes 51 on the reproductive performance of Holstein × Zebu (HZ) and Brown Swiss × Zebu (BZ) 52 crossbred cows, and to compare the reproductive performance of these genotypes in a 53 dual-purpose production system. Methods: Cows were maintained in a rotational grazing 54 system on African Star grass ( Cynodon plectostachyus ) in Veracruz, Mexico. Cows were 55 milked twice daily. Calves were kept tied on one side of their dams, while the cows were 56 milked. Results: Percentage of Bt genes did not affect (p>0.05) any fertility trait (age at 57 first calving, days to first service after calving, services per conception, first service 58 conception rate, days open until conception, gestation length and calving interval) of BZ 59 cows. In contrast, HZ cows with less than 75% of Holstein (H) genes were 0.3 years 60 younger (p<0.05) at first calving and had 39.8 fewer days open (p<0.05) than HZ cows 61 with 75% or more of H genes. In addition, the calving interval of HZ cows with less than 62 75% of H genes was 44.8 days shorter (p<0.05) than that of HZ cows with 75% or more 63 of H genes. HZ cows had five fewer days pregnant and were 22.8 kg heavier at calving 64 (p<0.05) than BZ cows. Conclusions: The effect of the percentage of Bt genes on cow 65 fertility depended on the dairy breed used. In general, BZ and HZ cows had similar 66 reproductive performance.","PeriodicalId":49613,"journal":{"name":"Revista Colombiana De Ciencias Pecuarias","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44253395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-20DOI: 10.17533/udea.rccp.v35n2a03
Daniel Contreras-Benicio, B. Castro-Valenzuela, J. A. Grado-Ahuir, M. Burrola-Barraza
{"title":"Well-of-the-well (WOW) versus polyester mesh (PM): a comparison of single-embryo culture systems in bovines","authors":"Daniel Contreras-Benicio, B. Castro-Valenzuela, J. A. Grado-Ahuir, M. Burrola-Barraza","doi":"10.17533/udea.rccp.v35n2a03","DOIUrl":"https://doi.org/10.17533/udea.rccp.v35n2a03","url":null,"abstract":"","PeriodicalId":49613,"journal":{"name":"Revista Colombiana De Ciencias Pecuarias","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48493234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-17DOI: 10.17533/udea.rccp.v35n1a05
Victor H Campelo-Lima, Stela Antas-Urbano, Marcelo Andrade-Ferreira, Pedro H Cavalcante-Ribeiro, José I Gomes-Bezerra, Juana C Cariri-Chagas, Emerson Moreira-Aguiar, Adriano H Nascimento-Rangel
33 Background: Novel feeding strategies should be developed in order to produce high34 quality meat in current goat production systems. Objective: To evaluate the effects of 35 castration and the association of spineless cactus with sugarcane bagasse or elephant grass 36 hay on nutrient intake, digestibility, performance, feeding behavior and carcass traits of 37 feedlot kids. Methods: A total of 24 kids (12 castrated and 12 intact), with an average 38 Received: October 1, 2020; accepted: May 9, 2021 *Corresponding author. RN 160, Km 03, CEP 59280-000, Caixa Postal 07. E-mail: stela_antas@yahoo.com.br This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. eISSN: 2256-2958 Rev Colomb Cienc Pecu initial weight of 18.5 ± 3.8 kg were allotted to a completely randomized 2 x 2 factorial 39 design (sugar cane bagasse or elephant grass hay; intact or castrated), and confined for 70 40 days. Results: Nutrient intake and animal performance were similar between treatments. 41 Sugarcane bagasse increased, when compared to elephant grass hay, the digestibility of 42 dry matter (66.12 x 62.88; p=0.005), crude protein (74.26 x 70.95; p=0.029) and non43 fibrous carbohydrates (91.94 x 83.07; p<0.001). Forage source affected the time spent 44 resting, ruminating and total chewing time, but there was no effect of diets on feeding and 45 rumination efficiencies. The elephant grass hay increased, when compared to sugarcane 46 bagasse, the hot carcass weight (9.87 x 10.79; p=0.025), and the hot carcass yield (43.81 47 x 46.87; p=0.013). Intact kids produced heavier hot carcasses when compared with 48 castrated (10.80 x 9.86; p=0.014). Conclusion: Feeding intact or castrated kids with sugar 49 cane bagasse or elephant grass hay do not affect nutrient intake and performance. Feedlot 50 goats will have improved carcass characteristics if kept intact and fed elephant grass hay. 51
33背景：为了在目前的山羊生产系统中生产出高质量的肉，应该制定新的饲养策略。目的：评价35次阉割和无刺仙人掌与甘蔗渣或象草36干草的结合对37名饲养场儿童营养摄入、消化率、生产性能、饲养行为和胴体性状的影响。方法：2020年10月1日，共有24名儿童（12名阉割，12名完整），平均38名；接受日期：2021年5月9日*通讯作者。RN 160，Km 03，CEP 59280-000，Caixa邮政07。电子邮件：stela_antas@yahoo.com.br这部作品是根据知识共享署名非商业共享4.0国际许可证授权的。eISSN:2256-2958 Rev Colomb Cienc Pecu初始体重18.5±3.8 kg被分配给一个完全随机的2×2析因39设计（甘蔗渣或象草干草；完整或阉割），并禁闭70～40天。结果：不同处理之间的营养摄入和动物表现相似。41与象草干草相比，甘蔗渣提高了42种干物质（66.12 x 62.88；p=0.005）、粗蛋白（74.26 x 70.95；p=0.029）和非43种纤维碳水化合物（91.94 x 83.07；p<0.001）的消化率。饲料来源影响了休息、反刍和总咀嚼时间，但日粮对喂养和反刍效率没有影响。与甘蔗46蔗渣相比，象草干草增加了热胴体重量（9.87 x 10.79；p=0.025），和热胴体产量（43.81 47 x 46.87；p=0.013）。与48个阉割的孩子相比，完整的孩子产生了更重的热胴体（10.80 x 9.86；p=0.014）。结论：用糖49甘蔗渣或象草干草喂养完整或阉割的孩子不会影响营养素的摄入和性能。如果饲养场50只山羊保持完整并喂以象草干草，其胴体特性将得到改善。51
{"title":"Sugarcane bagasse or elephant grass hay in diets for goats: Performance, feeding behavior and carcass characteristics","authors":"Victor H Campelo-Lima, Stela Antas-Urbano, Marcelo Andrade-Ferreira, Pedro H Cavalcante-Ribeiro, José I Gomes-Bezerra, Juana C Cariri-Chagas, Emerson Moreira-Aguiar, Adriano H Nascimento-Rangel","doi":"10.17533/udea.rccp.v35n1a05","DOIUrl":"https://doi.org/10.17533/udea.rccp.v35n1a05","url":null,"abstract":"33 Background: Novel feeding strategies should be developed in order to produce high34 quality meat in current goat production systems. Objective: To evaluate the effects of 35 castration and the association of spineless cactus with sugarcane bagasse or elephant grass 36 hay on nutrient intake, digestibility, performance, feeding behavior and carcass traits of 37 feedlot kids. Methods: A total of 24 kids (12 castrated and 12 intact), with an average 38 Received: October 1, 2020; accepted: May 9, 2021 *Corresponding author. RN 160, Km 03, CEP 59280-000, Caixa Postal 07. E-mail: stela_antas@yahoo.com.br This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. eISSN: 2256-2958 Rev Colomb Cienc Pecu initial weight of 18.5 ± 3.8 kg were allotted to a completely randomized 2 x 2 factorial 39 design (sugar cane bagasse or elephant grass hay; intact or castrated), and confined for 70 40 days. Results: Nutrient intake and animal performance were similar between treatments. 41 Sugarcane bagasse increased, when compared to elephant grass hay, the digestibility of 42 dry matter (66.12 x 62.88; p=0.005), crude protein (74.26 x 70.95; p=0.029) and non43 fibrous carbohydrates (91.94 x 83.07; p<0.001). Forage source affected the time spent 44 resting, ruminating and total chewing time, but there was no effect of diets on feeding and 45 rumination efficiencies. The elephant grass hay increased, when compared to sugarcane 46 bagasse, the hot carcass weight (9.87 x 10.79; p=0.025), and the hot carcass yield (43.81 47 x 46.87; p=0.013). Intact kids produced heavier hot carcasses when compared with 48 castrated (10.80 x 9.86; p=0.014). Conclusion: Feeding intact or castrated kids with sugar 49 cane bagasse or elephant grass hay do not affect nutrient intake and performance. Feedlot 50 goats will have improved carcass characteristics if kept intact and fed elephant grass hay. 51","PeriodicalId":49613,"journal":{"name":"Revista Colombiana De Ciencias Pecuarias","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42913746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-04DOI: 10.17533/udea.rccp.v35n2a01
Azucena Cabrera-Jaramillo, S. Monsalve, E. Arroyave, J. Rodas
{"title":"Prevalence of Ehrlichia canis and Hepatozoon canis in sheltered dogs in southern Aburrá Valley, Colombia.","authors":"Azucena Cabrera-Jaramillo, S. Monsalve, E. Arroyave, J. Rodas","doi":"10.17533/udea.rccp.v35n2a01","DOIUrl":"https://doi.org/10.17533/udea.rccp.v35n2a01","url":null,"abstract":"","PeriodicalId":49613,"journal":{"name":"Revista Colombiana De Ciencias Pecuarias","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48031661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-21DOI: 10.17533/udea.rccp.v34n4a07
S. Martins, Gleidson G. P. Carvalho, A. Pires, L. C. Leite, D. Lago-Novais, R. Oliveira, L. Cirne, B. M. A. Carvalho
Background: Inclusion of urea and calcium oxide (CaO) during sugarcane ensilage has been hypothesized to improve dairy cow performance. Objective: To evaluate the use of urea and calcium oxide as additives to preserve sugarcane silage quality and determine whether they
{"title":"Preservation of sugarcane silage with urea and calcium oxide: performance and metabolic efficiency of dairy cows","authors":"S. Martins, Gleidson G. P. Carvalho, A. Pires, L. C. Leite, D. Lago-Novais, R. Oliveira, L. Cirne, B. M. A. Carvalho","doi":"10.17533/udea.rccp.v34n4a07","DOIUrl":"https://doi.org/10.17533/udea.rccp.v34n4a07","url":null,"abstract":"Background: Inclusion of urea and calcium oxide (CaO) during sugarcane ensilage has been hypothesized to improve dairy cow performance. Objective: To evaluate the use of urea and calcium oxide as additives to preserve sugarcane silage quality and determine whether they","PeriodicalId":49613,"journal":{"name":"Revista Colombiana De Ciencias Pecuarias","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44634750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-28DOI: 10.17533/UDEA.RCCP.V35N1A06
Angélica M Zuluaga-Cabrera, Camilo Jaramillo-Morales, J. R. Martínez-Aranzales
JR. Presence of Helicobacter spp. in dental tartar and gastric mucosa, and its relationship with EGUS in horses from a public slaughterhouse
{"title":"Presence of Helicobacter spp. in dental tartar and gastric mucosa, and its relationship with EGUS in horses from a public slaughterhouse","authors":"Angélica M Zuluaga-Cabrera, Camilo Jaramillo-Morales, J. R. Martínez-Aranzales","doi":"10.17533/UDEA.RCCP.V35N1A06","DOIUrl":"https://doi.org/10.17533/UDEA.RCCP.V35N1A06","url":null,"abstract":"JR. Presence of Helicobacter spp. in dental tartar and gastric mucosa, and its relationship with EGUS in horses from a public slaughterhouse","PeriodicalId":49613,"journal":{"name":"Revista Colombiana De Ciencias Pecuarias","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43808922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-26DOI: 10.17533/UDEA.RCCP.V35N1A02
L. L. Cardoso, K. Ribeiro, O. Pereira, K. Weiß, G. F. V. Bayão, C. S. Cunha, M. Marcondes
{"title":"Performance of lactating cows fed sugarcane silage treated with microbial additives","authors":"L. L. Cardoso, K. Ribeiro, O. Pereira, K. Weiß, G. F. V. Bayão, C. S. Cunha, M. Marcondes","doi":"10.17533/UDEA.RCCP.V35N1A02","DOIUrl":"https://doi.org/10.17533/UDEA.RCCP.V35N1A02","url":null,"abstract":"","PeriodicalId":49613,"journal":{"name":"Revista Colombiana De Ciencias Pecuarias","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43729361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-11DOI: 10.17533/UDEA.RCCP.V34N2A05
Fernando Barreto Rodrigues, C. H. Malhado, P. L. Carneiro, Diego Pagung Ambrosini, M. P. Rezende, R. Bozzi, Jiuzhou Z. Song
Background: Buffalo breeding has significantly increased in Brazil over recent years. However, few genetic evaluations have been conducted. Objective: To assess Genotype x Environment Interactions in the Mediterranean Water Buffalo in Brazil, for weight at 205 days of age, using reaction norm models via random regression. Methods: Data for buffaloes born between 1990 and 2014 were collected from five farms ascribed to the Brazilian Buffaloe Improvement Program, located in the North (1), Northeast (1), South (2) and Southeast (1) regions of Brazil. The initial database consisted of 5,280 observations at 205 days of age (W205). We assessed fit using two hierarchical reaction norm models: a two-step (HRNM2s) and a one-step (HRNM1s). Model fit was estimated using the Deviance Information Criterion, Deviance Based on Bayes Factors and Deviance based on Conditional Predictive Ordinate. The environmental descriptors were created to group individuals into common production environments based on year, season, herd and sex. Results: The best fit was obtained for the hierarchical reaction norm model with one-step (HRNM1s). Direct heritability estimates for this model ranged from 0.17 to 0.67 and the maternal heritability from 0.02 to 0.11 with increasing environmental gradient. Lower correlations among the sire classifications were obtained in comparison with HRNM1s in environments with low and high management, confirming the presence of genotype x environment interactions. Conclusion: We recommend a wider application of genetic evaluation in buffalo aimed at identifying optimal genotypes within specific environments.
{"title":"Genotype by environment interactions for body weight in Mediterranean buffaloes using reaction norm models","authors":"Fernando Barreto Rodrigues, C. H. Malhado, P. L. Carneiro, Diego Pagung Ambrosini, M. P. Rezende, R. Bozzi, Jiuzhou Z. Song","doi":"10.17533/UDEA.RCCP.V34N2A05","DOIUrl":"https://doi.org/10.17533/UDEA.RCCP.V34N2A05","url":null,"abstract":"Background: Buffalo breeding has significantly increased in Brazil over recent years. However, few genetic evaluations have been conducted. Objective: To assess Genotype x Environment Interactions in the Mediterranean Water Buffalo in Brazil, for weight at 205 days of age, using reaction norm models via random regression. Methods: Data for buffaloes born between 1990 and 2014 were collected from five farms ascribed to the Brazilian Buffaloe Improvement Program, located in the North (1), Northeast (1), South (2) and Southeast (1) regions of Brazil. The initial database consisted of 5,280 observations at 205 days of age (W205). We assessed fit using two hierarchical reaction norm models: a two-step (HRNM2s) and a one-step (HRNM1s). Model fit was estimated using the Deviance Information Criterion, Deviance Based on Bayes Factors and Deviance based on Conditional Predictive Ordinate. The environmental descriptors were created to group individuals into common production environments based on year, season, herd and sex. Results: The best fit was obtained for the hierarchical reaction norm model with one-step (HRNM1s). Direct heritability estimates for this model ranged from 0.17 to 0.67 and the maternal heritability from 0.02 to 0.11 with increasing environmental gradient. Lower correlations among the sire classifications were obtained in comparison with HRNM1s in environments with low and high management, confirming the presence of genotype x environment interactions. Conclusion: We recommend a wider application of genetic evaluation in buffalo aimed at identifying optimal genotypes within specific environments.","PeriodicalId":49613,"journal":{"name":"Revista Colombiana De Ciencias Pecuarias","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45100659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-19DOI: 10.17533/UDEA.RCCP.V34N4A08
H. Jo, J. Y. Sung, B. Kim
Background: Alternative feed ingredients are widely used in swine diets to lower feed costs, but these ingredients contain a large quantity of non-starch polysaccharides. Supplemental xylanase is known to break down non-starch polysaccharides. However, the effects of exogenous xylanase from Bacillus subtilis on various feed ingredients have rarely been compared. Objective: To evaluate the effects of supplemental xylanase on in vitro disappearance of dry matter (DM) in various feed ingredients for pigs. Methods: Nine feed ingredients were used to measure in vitro ileal disappearance and in vitro total tract disappearance of DM. Each ground ingredient was supplemented with either supplemental xylanase (9,000 U/g) or cornstarch at 1.0%. Results: Supplemental xylanase increased in vitro ileal disappearance of DM in wheat, barley, wheat flour, and wheat bran (p<0.05). The in vitro total tract disappearance of DM for barley and wheat bran increased with xylanase addition (p<0.05). Conclusion: Exogenous xylanase could increase in vitro ileal DM disappearance in barley, wheat, wheat flour, and wheat bran, but did not affect in vitro total tract DM disappearance in wheat and wheat flour.
{"title":"Effects of supplemental xylanase on in vitro disappearance of dry matter in feed ingredients for swine","authors":"H. Jo, J. Y. Sung, B. Kim","doi":"10.17533/UDEA.RCCP.V34N4A08","DOIUrl":"https://doi.org/10.17533/UDEA.RCCP.V34N4A08","url":null,"abstract":"Background: Alternative feed ingredients are widely used in swine diets to lower feed costs, but these ingredients contain a large quantity of non-starch polysaccharides. Supplemental xylanase is known to break down non-starch polysaccharides. However, the effects of exogenous xylanase from Bacillus subtilis on various feed ingredients have rarely been compared. Objective: To evaluate the effects of supplemental xylanase on in vitro disappearance of dry matter (DM) in various feed ingredients for pigs. Methods: Nine feed ingredients were used to measure in vitro ileal disappearance and in vitro total tract disappearance of DM. Each ground ingredient was supplemented with either supplemental xylanase (9,000 U/g) or cornstarch at 1.0%. Results: Supplemental xylanase increased in vitro ileal disappearance of DM in wheat, barley, wheat flour, and wheat bran (p<0.05). The in vitro total tract disappearance of DM for barley and wheat bran increased with xylanase addition (p<0.05). Conclusion: Exogenous xylanase could increase in vitro ileal DM disappearance in barley, wheat, wheat flour, and wheat bran, but did not affect in vitro total tract DM disappearance in wheat and wheat flour.","PeriodicalId":49613,"journal":{"name":"Revista Colombiana De Ciencias Pecuarias","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43463780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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