Tigray Agricultural Research Institute, Alamata Agriculture Research Center, Alamata, Ethiopia.
Department of Animal, Rangelands and Wildlife Sciences, Mekellle University, Mekelle, Ethiopia.
Trop Anim Health Prod. 2021 Jan 2;53(1):51. doi: 10.1007/s11250-020-02444-x.
The feeding experiment was conducted at Ofla district, southern Tigray, North Ethiopia, to investigate feed utilization, diet digestibility, and its economic feasibility under different supplementation options. Twenty-four yearling intact growing lambs were used in randomized complete block design with three treatments and eight replications. The treatment diets were T1 (molasses 15% + wheat bran 48% + cotton seed cake 35%), T2 (maize grain 20% + wheat bran 43% + noug seed cake 35%) and T3 (maize grain 20% + wheat bran 33% + dried brewers' grain 45%). The diet was formulated as iso-nitrogenous and each animal has taken daily nutrient requirements according to their body weight. The collected data were analyzed using SAS (2007) statistical software. Economic analysis was done using standard partial budget analysis guidelines of CIMMIT (1988). The crude protein contents of the three treatment rations were comparable across treatments. There was a higher total dry matter intake recorded in animals fed on T3 as compared to the other treatments. The barley straw intake was higher and significant (P < 0.05) for the animals' group in T3 than that of T1 and T2. Animals fed with T3 had significantly (P < 0.05) higher organic matter intake as compared to those fed with T1 and T2. However, there was no significant (P > 0.05) differences in crude protein intake between treatments. The apparent digestibility of dry matter, organic matter, and crude protein had no significant differences (P > 0.05) between treatments. Similarly, the apparent digestibility of neutral detergent fiber and acid detergent fiber was not significantly different (P > 0.05) among T1, T2, and T3. In general, animals that fed on T3 achieved better feed utilization and economic return as compared to the others.
在埃塞俄比亚北部提格雷南部的奥弗拉地区进行了这项饲养实验，以研究在不同补充方案下的饲料利用、日粮消化率及其经济可行性。24 只成年未去势的生长羔羊采用随机完全区组设计，分为 3 个处理，每个处理 8 个重复。处理日粮为 T1（15%糖蜜+48%麦麸+35%棉籽饼）、T2（20%玉米+43%麦麸+35%腰豆饼）和 T3（20%玉米+33%麦麸+45%干啤酒糟）。日粮按等氮配制，每只动物根据体重摄入每日营养需求。使用 SAS（2007）统计软件分析收集的数据。经济分析采用 CIMMIT（1988）的标准部分预算分析指南。三种处理日粮的粗蛋白含量在处理间相当。与其他处理相比，T3 组动物的总干物质摄入量更高。T3 组动物的大麦秸秆摄入量较高且差异显著（P < 0.05），而 T1 和 T2 组动物的摄入量较低。与 T1 和 T2 相比，T3 组动物的有机物摄入量显著更高（P < 0.05）。然而，处理间粗蛋白摄入量无显著差异（P > 0.05）。干物质、有机物和粗蛋白的表观消化率在处理间无显著差异（P > 0.05）。同样，T1、T2 和 T3 之间中性洗涤纤维和酸性洗涤纤维的表观消化率无显著差异（P > 0.05）。总的来说，与其他处理相比，T3 组动物的饲料利用率和经济效益更好。
