Dessie Jemberu, Melaku Solomon, Tegegne Firew, Peters Kurt J
South Gondar Agricultural and Rural Development Office, Simada, Ethiopia.
Trop Anim Health Prod. 2010 Jun;42(5):841-8. doi: 10.1007/s11250-009-9496-3. Epub 2009 Nov 8.
The experiment consisting of 7 days of digestibility and 90 days of feeding trial was conducted at Wogda (Ethiopia) to determine the effect of supplementation of graded levels of concentrate mix (CM) on feed intake, digestibility, and body weight (BW) change in hay-based feeding of Simada sheep. Twenty-yearling Simada sheep with a mean initial BW of 17.9 +/- 0.81 kg (mean +/- SD) were used in randomized complete block design arranged into five blocks of four animals. The four dietary treatments that consisted of hay alone (T1), hay +150 g dry matter (DM; T2, low), hay +250 g DM (T3, medium), and hay +350 g DM (T4, high) CM were randomly assigned to each sheep within a block. The CM consisted of wheat bran (WB), noug seed (Guizotia abyssinica) meal and safflower (Carthamus tinctorius) seed meal at the ratio of (2:1:1), respectively. Supplementation with T2 and T3 increased (P < 0.001) total DM and organic matter intake than the control treatment. Overall, supplementation improved (P < 0.001) crude protein intake, digestibility, feed conversion efficiency, BW gain, and profitability compared to the control, whereas sheep on the high than the low and medium level of supplementation performed better in these parameters among the supplemented treatments. From the results of this study, T4 is recommended as the best level of supplementation since it resulted in better nutrient utilization, animal performance, and profitability.
在埃塞俄比亚的沃格达进行了一项为期7天的消化率试验和90天的饲养试验，以确定在以干草为基础的Simada绵羊饲养中补充不同水平精料混合料（CM）对采食量、消化率和体重（BW）变化的影响。选用20只平均初始体重为17.9±0.81千克（平均值±标准差）的一岁Simada绵羊，采用随机完全区组设计，分为5个区组，每个区组4只动物。四种日粮处理分别为：仅喂干草（T1）、干草+150克干物质（DM；T2，低水平）、干草+250克DM（T3，中等水平）和干草+350克DM（T4，高水平）CM，在每个区组内随机分配给每只绵羊。CM由麦麸（WB）、诺格籽（Guizotia abyssinica）粕和红花（Carthamus tinctorius）籽粕按（2:1:1）的比例组成。与对照处理相比，补充T2和T3可提高（P<0.001）总干物质和有机物摄入量。总体而言，与对照相比，补充精料混合料提高了（P<0.001）粗蛋白摄入量、消化率、饲料转化效率、体重增加和盈利能力，而在补充处理中，高水平补充的绵羊在这些参数上的表现优于低水平和中等水平补充的绵羊。根据本研究结果，推荐T4作为最佳补充水平，因为它能带来更好的养分利用、动物生产性能和盈利能力。
