Saeed Osama Anwer, Sazili Awis Qurni, Akit Henny, Alimon Abdul Razak, Samsudin Anjas Asmara B
Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
Department of Animal Science, Agriculture Faculty, University of Anbar, Ramadi, Iraq.
Trop Anim Health Prod. 2018 Dec;50(8):1859-1864. doi: 10.1007/s11250-018-1636-1. Epub 2018 Jun 14.
This study investigated the effect of different levels of corn supplementation as energy source into palm kernel cake-urea-treated rice straw basal diet on urinary excretion of purine derivatives, nitrogen utilization, rumen fermentation, and rumen microorganism populations. Twenty-seven Dorper lambs were randomly assigned to three treatment groups and kept in individual pens for a 120-day period. The animals were subjected to the dietary treatments as follows: T1: 75.3% PKC + 0% corn, T2: 70.3% PKC + 5% corn, and T3: 65.3% PKC + 10% corn. Hypoxanthine and uric acid excretion level were recorded similarly in lambs supplemented with corn. The microbial N yield and butyrate level was higher in corn-supplemented group, but fecal N excretion, T3 has the lowest level than other groups. Lambs fed T3 had a greater rumen protozoa population while the number of R. flavefaciens was recorded highest in T2. No significant differences were observed for total bacteria, F. succinogenes, R. albus, and methanogen population among all treatment. Based on these results, T3 could be fed to lambs without deleterious effect on the VFA and N balance.
本研究调查了在棕榈仁粕-尿素处理稻草基础日粮中添加不同水平玉米作为能量来源对嘌呤衍生物尿排泄、氮利用、瘤胃发酵和瘤胃微生物种群的影响。将27只杜泊羔羊随机分为三个处理组，在个体栏中饲养120天。动物接受如下日粮处理：T1：75.3%棕榈仁粕+0%玉米，T2：70.3%棕榈仁粕+5%玉米，T3：65.3%棕榈仁粕+10%玉米。在补充玉米的羔羊中，次黄嘌呤和尿酸排泄水平的记录方式类似。补充玉米的组中微生物氮产量和丁酸盐水平较高，但粪便氮排泄量，T3组低于其他组。饲喂T3的羔羊瘤胃原生动物种群较多，而黄化瘤胃球菌数量在T2组中记录最高。在所有处理中，总细菌、琥珀酸丝状杆菌、白色瘤胃球菌和产甲烷菌种群未观察到显著差异。基于这些结果，T3可以饲喂给羔羊，而不会对挥发性脂肪酸和氮平衡产生有害影响。
