Sarwar Muhammad, Shahzad Muhammad A, Nisa Mahr U, Afzal Danish, Sharif Muhammad, Saddiqi Hafiz A
Institute of Animal Nutrition and Feed Technology, University of Agriculture, Faisalabad, Pakistan.
Trop Anim Health Prod. 2011 Mar;43(3):543-8. doi: 10.1007/s11250-010-9745-5. Epub 2010 Nov 26.
The study was carried out to evaluate the influence of urea plus molasses-treated wheat straw (WS) ensiled with cattle manure (CM) on nutrients intake, their digestibilities, and growth performance of crossbred (Sahiwal × Holstein Friesian) cattle calves. The CM was mixed with ground WS in a ratio of 30:70 on dry matter (DM) basis. The WS-CM mixture treated with urea (4% DM) and molasses (4% DM) was allowed to ferment for 40 days in a cemented pit. Four iso-nitrogenous and iso-energetic fermented wheat straw (FWS)-based experimental diets were formulated. The FWS0, FWS20, FWS30, and FWS40 diets contained 0%, 20%, 30%, and 40% FWS, respectively. Twenty calves (9-10 months of age) were randomly allocated to four dietary treatments in a randomized complete block design, five in each group. Increasing trends for DM, organic matter, crude protein, and neutral detergent fiber intakes by calves were observed with increasing dietary FWS level. Weight gain was significantly different among calves fed different levels of FWS. The highest weight gain (491.8 g/day) was observed in calves fed FWS40 diet, while calves fed FWS0 and FWS20 diets gained 350.0 and 449.6 g/day, respectively. The results from this study imply that the FWS can be added up to 30% in the diet of growing crossbred calves without any detrimental effect on their performance.
本研究旨在评估用尿素和糖蜜处理的小麦秸秆（WS）与牛粪（CM）青贮后，对杂交（萨希瓦尔×荷斯坦弗里生）犊牛营养物质摄入量、消化率及生长性能的影响。以干物质（DM）为基础，将CM与粉碎的WS按30:70的比例混合。用尿素（4% DM）和糖蜜（4% DM）处理的WS-CM混合物在水泥坑中发酵40天。配制了四种等氮等能量的基于发酵小麦秸秆（FWS）的实验日粮。FWS0、FWS20、FWS30和FWS40日粮分别含有0%、20%、30%和40%的FWS。20头犊牛（9 - 10月龄）采用随机完全区组设计随机分配到四种日粮处理组，每组5头。随着日粮中FWS水平的增加，犊牛对干物质、有机物、粗蛋白和中性洗涤纤维的摄入量呈增加趋势。饲喂不同水平FWS的犊牛体重增加显著不同。饲喂FWS40日粮的犊牛体重增加最高（491.8克/天），而饲喂FWS0和FWS20日粮的犊牛体重增加分别为350.0克/天和449.6克/天。本研究结果表明，在生长杂交犊牛的日粮中可添加高达30%的FWS，而对其性能无任何不利影响。
