Baleseng Leonard, Madibela Othusitse, Tsopito Christopher, Mareko Molebeledi, Boitumelo Wame, Letso Moagi
Department of Animal Sciences, Faculty of Animal and Veterinary Sciences, Botswana University of Agriculture and Natural Resources, Private Bag 0027, Gaborone, Botswana.
Animals (Basel). 2023 Apr 18;13(8):1387. doi: 10.3390/ani13081387.
A trial evaluated growth performance, carcass characteristics, meat quality, and economic returns of fattened lambs fed on diets containing different protein sources. Six castrated male Tswana lambs per treatment were used in a completely randomised design (CRD) trial and fed on complete diets containing Lucerne (CD; commercial diet), morula kernel cake (MKC), or sunflower seedcake (SC) as protein sources over a 103-day experiment. No significant differences ( > 0.05) were observed in the dry matter intake, final body weight, average daily gain, and FCR. This was attributable to all the diets providing an equal supply of nutrients to the lambs. Meat quality attributes and proximate composition values were similar ( > 0.05) across the treatments. muscle organoleptic quality did not differ ( > 0.05) across the treatments. The gross margin analysis was significantly greater ( < 0.05) when feeding SCD than feeding CD and was intermediate for lambs fed MKCD. Morula kernel cake () can be used for fattening lambs when common protein sources are either not available or expensive.
一项试验评估了以含有不同蛋白质来源的日粮喂养的育肥羔羊的生长性能、胴体特征、肉质和经济效益。在一项完全随机设计(CRD)试验中,每种处理使用6只去势雄性茨瓦纳羔羊,并在为期103天的试验中,以含有紫花苜蓿(CD;商业日粮)、桑椹籽饼(MKC)或葵花籽饼(SC)作为蛋白质来源的全价日粮进行喂养。在干物质摄入量、终体重、平均日增重和饲料转化率方面未观察到显著差异(>0.05)。这是由于所有日粮为羔羊提供了等量的营养物质。各处理间的肉质属性和近似成分值相似(>0.05)。各处理间肌肉感官品质无差异(>0.05)。饲喂SCD时的毛利率分析显著高于(<0.05)饲喂CD时,且饲喂MKCD的羔羊处于中间水平。当常见蛋白质来源不可用或价格昂贵时,桑椹籽饼()可用于育肥羔羊。