Asmare Bimrew, Demeke Solomon, Tolemariam Taye, Tegegne Firew, Wamatu Jane, Rischkowsky Barbara
Department of Animal Production and Technology, College of Agriculture and Environmental Sciences, Bahir Dar University, P.O. BOX 79, Bahir Dar, Ethiopia.
Department of Animal Science, College of Agriculture and Veterinary Medicine, Jimma University, Jimma, Ethiopia.
Trop Anim Health Prod. 2016 Apr;48(4):801-6. doi: 10.1007/s11250-016-1031-8. Epub 2016 Mar 12.
The study was conducted to determine feed intake, digestibility, and body weight (BW) change of Washera sheep fed on desho grass and natural pasture hay as a basal diet and supplemented with concentrate mixtures. Twenty-five intact male sheeps with body weight of 19.4 ± 1.89 kg (mean ± SD) were used in randomized complete block design. The dietary treatments were 100% natural pasture hay (NPH) (T1), 75% NPH + 25% desho grass hay (DGH) (T2), 50% NPH + 50% DGH (T3), 25% NPH + 75% DGH (T4), and 100% DGH (T5). Equal amount of concentrate mixture (CM) (300 g DM/day/h) was supplemented in all of the five treatments. The result of laboratory chemical analysis revealed that the CP content of the basal diets increased with increased proportion of desho grass hay inclusion in the treatments at the expense of natural pasture hay. Total DM, OM, CP, NDF, and ADF intake and digestibility was significant (P < 0.05) and in the increasing order of T1 < T2 < T3 < T4 < T5. The average daily body weight gain (ADG) of experimental sheep was significantly (P < 0.05) higher as proportion of desho grass increased from 0 to 100% in the basal diet. The result indicated that desho grass can be used as a basal diet for local sheep with better performance than natural pasture hay-based diets.
本研究旨在确定以德绍草和天然牧场干草为基础日粮并补充精料混合料的瓦谢拉羊的采食量、消化率和体重变化。采用随机完全区组设计，选用25只体重为19.4±1.89千克（均值±标准差）的成年雄性绵羊。日粮处理包括100%天然牧场干草（NPH）（T1）、75% NPH + 25%德绍草干草（DGH）（T2）、50% NPH + 50% DGH（T3）、25% NPH + 75% DGH（T4）和100% DGH（T5）。在所有五种处理中均补充等量的精料混合料（CM）（300克干物质/天/只）。实验室化学分析结果表明，随着日粮中德绍草干草比例的增加，基础日粮的粗蛋白含量增加，天然牧场干草比例相应减少。总干物质、有机物、粗蛋白、中性洗涤纤维和酸性洗涤纤维的采食量和消化率差异显著（P<0.05），且按T1<T2<T3<T4<T5的顺序递增。随着基础日粮中德绍草比例从0增加到100%，试验羊的平均日增重（ADG）显著提高（P<0.05）。结果表明，德绍草可作为当地绵羊的基础日粮，其性能优于以天然牧场干草为基础的日粮。
