Response of sheep fed urea-treated corncob and supplemented with cassava leaf meal

IF 0.7 4区农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE

South African Journal of Animal Science Pub Date : 2022-05-09 DOI:10.4314/sajas.v51i6.2

D. Yulistiani, W. Puastuti, E. Wina

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引用次数: 0

Abstract

The objective of this study was to evaluate the effects of feeding untreated or urea-treated ground corncob and supplementing with cassava leaf meal (CLM) in a total mixed ration on growth, feed intake, nutrient digestibility, nitrogen (N) utilization and rumen fermentation of sheep. Five diet treatments with five replications consisted of untreated corncob + concentrate (CC); urea-treated corncob + concentrate (UCC); and CC and UCC supplemented with CLM and designated as CC+CLM and UCC+CLM, respectively. A diet formulated with a mixture of elephant grass and concentrate was used as control (EG). There were no significant differences in dry matter intake (DMI) between treatments. The average DMI was 4.17% bodyweight. Average daily gain (ADG) of sheep fed the treatment diets was between 146.3 and 176.2 g/h/day, and was higher than EG (89.1 g/head/day). Thus, the treatments improved feed conversion ratio (FCR). Nitrogen retention was lowest for EG and highest for UCC and UCC+CLM. The addition of CLM had no effect on growth, feed intake, nutrient digestibility, nitrogen utilization and rumen fermentation characteristics. It was concluded that corncob could be used as a replacement for elephant grass in postweaning diets for sheep.

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绵羊饲喂尿素处理玉米芯和添加木薯叶粉的反应

本试验旨在评价在全混合日粮中饲喂未经处理或尿素处理的玉米芯，并添加木薯叶粉对绵羊生长、采食量、营养物质消化率、氮利用率和瘤胃发酵的影响。5个饲粮处理，5个重复:未处理玉米芯+精料(CC);尿素处理玉米芯浓缩液(UCC);CC和UCC补充了CLM，分别命名为CC+CLM和UCC+CLM。以象草与精料混合配制的饲粮为对照(EG)。干物质采食量(DMI)各处理间无显著差异。平均DMI为体重的4.17%。饲粮的平均日增重(ADG)为146.3 ~ 176.2 g/h/d，高于EG (89.1 g/头/d)。由此可见，各处理提高了饲料系数。氮潴留以EG最低，UCC和UCC+CLM最高。添加CLM对生长、采食量、营养物质消化率、氮利用率和瘤胃发酵特性均无影响。由此可见，玉米芯可作为象草在绵羊断奶后饲粮中的替代饲料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

South African Journal of Animal Science 农林科学-奶制品与动物科学

CiteScore

1.50

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： The South African Journal of Animal Science is an open access, peer-reviewed journal for publication of original scientific articles and reviews in the field of animal science. The journal publishes reports of research dealing with production of farmed animal species (cattle, sheep, goats, pigs, horses, poultry and ostriches), as well as pertinent aspects of research on aquatic and wildlife species. Disciplines covered nutrition, genetics, physiology, and production systems. Systematic research on animal products, behaviour, and welfare are also invited. Rigorous testing of well-specified hypotheses is expected.