Samanea saman和Cordia dentata羔羊的消化率、瘤胃动力学和血液代谢产物

Fabian A. Gutierrez-Oviedo, J. Pardo Guzmán, R. C. Castañeda Serrano
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引用次数: 0

摘要

哥伦比亚羊的生产是在广阔的牧场上进行的,蛋白质含量低,纤维含量高,导致增重低。本研究的目的是评价毛羔羊饲粮沙曼草和齿蛾的采食量、消化率、瘤胃动力学和血液代谢产物。试验选用12只毛羊,采用4x4拉丁方设计,分4个处理,4个试验期。处理分别为t1: 100%双硫磷干草,T2: 80%双硫磷干草,20%沙曼草,T3: 80%双硫磷干草,20%齿草,T4: 80%双硫磷干草,10%沙曼草,10%齿草。与T1饲粮相比,含树叶饲粮的营养摄入量最高(p< 0.05)。叶片饲粮中DM、OM和NDF的体内和体外消化率均高于T1饲粮(p< 0.05)。不同叶片饲粮的消化能和代谢能差异无统计学意义(p< 0.05)。T2饲粮的血尿素氮值显著高于T2饲粮(p< 0.05)。T2饲粮在96 h时的降解率较高(p< 0.05)。T3日粮的潜在降解率较高。本研究结果表明,山参叶和齿参叶提高了营养物质的摄入和消化率。因此,它们可以成为热带干燥森林中绵羊的替代品。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Digestibility, rumen kinetics, and blood metabolites in lambs fed Samanea saman and Cordia dentata
Colombian sheep production is carried out in extensive pastures with a low percentage of protein and high fiber levels that lead to low weight gains. The aim of this study was to evaluate intake, digestibility, rumen kinetics, and blood metabolites in hair lambs fed Samanea saman and Cordia dentata. Twelve hair lambs were distributed in an experimental 4x4 Latin square design, with four treatments and four experimental periods. Treatments were T1:100 % Dichanthium spp hay, T2: 80 % Dichanthium spp hay, 20 % S. saman, T3: 80 % Dichanthium spp hay, 20 % C. dentata, T4: 80 % Dichanthium spp hay, 10 % S. saman, and 10 % C. dentata. The highest nutrients intakes were obtained with diets containing tree foliage compared with the T1 diet (p< 0,05). In vivo and In vitro digestibility of DM, OM and, NDF of tree leaves diets showed higher values than the T1 diet (p<0,05). Digestible and metabolizable energy were similar between tree leaves diets (p<0,05). Blood urea nitrogen values were superior for animals fed the T2 diet (p<0,05). Degradability values at 96 hours were higher for the T2 diet (p<0,05). Potential degradability was superior for the T3 diet. The results of this study demonstrate that S. saman and C. dentata leaves improve nutrients intake and digestibility. Therefore, they can be an alternative for sheep in the tropical dry forest.
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