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
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引用次数: 0
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
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
期刊介绍：
The editors of Revista Colombiana de Ciencias Pecuarias (RCCP) welcome the submission of original manuscripts on experimental and clinical studies associated with the broad areas of animal sciences and veterinary medicine as they interface with biochemistry, molecular biology, physiology, pharmacology, toxicology, pathology, microbiology, parasitology, immunology and epidemiology. The scope of the journal includes studies of basic and applied research in animal management and production, feeding and nutrition, reproduction, breeding, genetics, animal welfare and behavior; as well as animal production focussed from biotechnology, soil science, agrostology, silvopastoral systems, livestock economics and the environment.
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Contributions may be classified as original research, review, rapid communication, clinical case studies or methodological articles, as well as news/commentaries or letters to the editor. Most review articles are invited by the editor. Authors interested in submitting a review article should contact the corresponding editor. Rapid publication of original manuscripts is a goal of the journal. Manuscripts must be written in English. Each manuscript is considered for publication with the understanding that it has not been simultaneously submitted to any other journal. Upon acceptance for publication, papers are subject to editorial review and revision.
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