摘要
Forty five steers (2.5–3.0 years of age and 200±5 (SEM) kg body weight) were allotted randomly into five diets to assess the effects of finishing Tanzania Shorthorn Zebu (TSZ) cattle in feedlot using diets based on either molasses or maize grain combined with maize or rice by-products. The diets were hay and concentrate mixtures of hominy feed with molasses (HFMO), rice polishing with molasses (RPMO), hominy feed with maize meal (HFMM), rice polishing with maize meal (RPMM) and a control of maize meal with molasses (MMMO). All concentrate mixtures contained cotton seed cake, mineral mixture, salt and urea. Both hay and concentrate were fed ad libitum and with free access to drinking water for 90 days. Feed intake, body weights and carcass characteristics were recorded. The daily total dry matter intake (DMI, kg/day) was greater (P<0.05) in molasses based diets (7.64 for RPMO and 7.35 for HFMO) than in maize grain based diets (6.94, 6.73 and 6.19 for RPMM, MMMO and HFMM, respectively). Energy intake was highest (P<0.05) in HFMO (86 MJ/day) and lowest in RPMM (69 MJ/day). Crude protein intake was highest in HFMO (867 g/day) and lowest in RPMO (725 g/day). Feed conversion ratio (kg feed DMI/kg gain) was lower (P<0.05) for steers fed on HFMM (7.87) and HFMO (8.09) than those fed on MMMO (10.4), RPMM (11.0) and RPMO (11.5). Steers fed on HFMO had the highest (P<0.05) daily weight gain (919 g/day), total weight gain (83 kg), final live weight (283 kg), empty body weight (268 kg) and hot carcass weight (151 kg). The proportion of internal fat to empty body weight (2.7%) in steers fed on HFMO was higher (P<0.05) than those from other diets. Nevertheless, all carcasses showed relatively high fat cover (1.1–1.6 cm). It is concluded that agro-processing by products are good feed resources for finishing TSZ cattle in feedlots with formulations based on molasses being superior over those based on maize meal, and hominy feed being superior over rice polishing. A combination of molasses and hominy feed (HFMO) could be used successfully as an alternative to maize meal in finishing TSZ cattle in feedlot.
摘要译文
四五公牛（2随机分为五个饮食，以评估使用基于要么糖蜜或玉米粒与副产品玉米或大米相结合的饮食在饲养场整理坦桑尼亚短角牛咋不（慈）牲畜的影响在日粮干草和集中糖蜜（HFMO）霍米尼饲料的混合物，用大米糖浆（RPMO），玉米粥饲料用玉米粉（HFMM）抛光，水稻玉米粉（RPMM）和玉米粉用糖蜜控制（MMMO）含有棉子饼都集中混合物，矿物掺合料，盐和尿素抛光无论干草和精自由进食，并免费提供饮用水90 daysFeed摄入，体重和胴体品质记录每日总干物质摄取量（DMI，kg /天）显着高于在基于玉米籽粒日粮（6 6and 6for高于（P 糖蜜为主的饮食0（7因为RPMO和7因为HFMO） RPMM，MMMO和HFMM，分别）能量摄入最高（P 0 HFMO（86 MJ /日），最低为RPMM（69兆焦耳/天）粗蛋白质摄入量最高的是HFMO（867克/天），最低的是RPMO（725克/天），饲料转化率（kg饲料DMI /千克增益）降低（P 0饲喂肉牛HFMM（7和HFMO（809）比饲喂上MMMO（10 RPMM（11and RPMO（11肉牛饲喂HFMO具有最高的（P 日增重0（919克/天），总增重（83千克），最终活重（283公斤）空体重（271公斤），在饲喂肉牛HFMO热胴体重（150千克）的内部脂肪空体重（25）的比例较高（P 0比其它饮食不过，所有的尸体表现出相对高脂肪盖（1厘米）结论：通过产品的农产品加工是完成基于糖蜜被过度那些基于玉米粉优越与配方育肥场慈好牛的饲料资源，和霍米尼饲料被过度糖蜜和玉米粥饲料（HFMO）的大米polishingA结合上级可以成功地用来替代在育肥整理慈牛玉米粉
L. Asimwe[a]; A.E. Kimambo[a]; G.H. Laswai[a]; L.A. Mtenga[a]; M.R. Weisbjerg[b]; J. Madsen[c]; D.E. Mushi[a]. Growth performance and carcass characteristics of Tanzania Shorthorn Zebu cattle finished on molasses or maize grain with rice or maize by-products[J]. Livestock Science, 2015,182: 112–117