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首页> 外文期刊>Tropical Animal Health and Production >Growth, carcass yield and meat quality attributes of Red Maasai sheep fed wheat straw-based diets
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Growth, carcass yield and meat quality attributes of Red Maasai sheep fed wheat straw-based diets

机译：饲喂麦秸的红马赛绵羊的生长，car体产量和肉质属性

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Thirty-two castrated Red Maasai sheep (12.7 kg initial body weight, aged 12–18 months), were used in an 84-day experiment to evaluate diets based on treated straw upon growth performance, carcass yield and meat quality. The animals were blocked by weight into four similar groups and randomly allotted into four dietary treatments, with eight individually fed animals per treatment. The dietary treatments were ad libitum untreated wheat straw (UTS), wheat straw treated with urea and lime (TS), straw and ad libitum hay (UTSH), and TS and ad libitum hay (TSH). In addition, each experimental animal received 220 g/day (on as fed basis) of a concentrate diet. Treatment of straw increased (P < 0.05) dry matter intake (42.3 vs. 33.7 g/kg W 75/day), energy intake (4.6 vs. 3.7 MJ ME/d) and the average daily gain (40.7 vs. 23.1 g). Animals on TS produced heavier (P < 0.05) carcasses (6.6 vs. 5.4 kg) with superior conformation than animals on UTS. Percentage cooking loss was higher in carcasses from animals fed TS compared to those from other diets. Except M. longissimus dorsi and M. semitendinosus, tenderness of muscles was not affected by diet but ageing of meat improved (P < 0.001) tenderness. Overall, straw treatment increased carcass yields with limited effects on meat quality attributes.
机译：在为期84天的实验中，使用32只cast割的红马赛绵羊（初始体重12.7公斤，年龄12-18个月），根据经过处理的稻草的生长性能，car体产量和肉质评估日粮。将动物按体重分成四个相似的组，并随机分配给四个饮食处理，每个处理中有八只单独喂养的动物。饮食处理为未经处理的未经处理的小麦秸秆（UTS），经尿素和石灰处理的小麦秸秆（TS），未经处理的秸秆和任意干草（UTSH）以及TS和未经处理的干草（TSH）。另外，每只实验动物接受220g /天（以进食为基础）的浓缩饮食。秸秆处理增加（P <0.05）干物质摄入量（42.3 vs. 33.7 g / kg W 75 /天），能量摄入（4.6 vs. 3.7 MJ ME / d）和平均日增重（40.7对23.1克）。与使用UTS的动物相比，使用TS的动物的car体重量更重（P <0.05）（6.6 vs. 5.4 kg）。饲喂TS的动物的cas体的蒸煮损失百分比高于其他饮食。除了背最长肌和半腱肌之外，肌肉的压痛不受饮食的影响，但肉的衰老改善了（P <0.001）的压痛。总体而言，秸秆处理提高了cas体产量，但对肉品质的影响有限。

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