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首页> 外文期刊>African Journal of Biotechnology >Carcass yield and characteristics of Karadi lambs as affected by dietary supplement of rumen undegradable nitrogen fed with Nigella sativa
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Carcass yield and characteristics of Karadi lambs as affected by dietary supplement of rumen undegradable nitrogen fed with Nigella sativa

机译：饲喂黑麦草饲喂瘤胃不可降解氮的膳食补充剂对卡拉迪羔羊的yield体产量和特性的影响

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摘要

The objective of this work was to investigate the effect of two levels of rumen undegradable nitrogen (7 and 10 g UDN/kg DM) fed with two levels of?Nigella sativa(0 and 7.5 g NS/ kg DM) supplementation to rations of karadi lambs on carcass characteristics, using 2 x 2 factorial experiment. Sixteen individual Karadi male lambs were used (four lambs for each treatment). They were weighing approximately 34 kg live weight and 7 months old. The diets were formulated to be given a 40% NaOH-treated barley straw DM to 60% concentrates DM. At the end of feeding trial the lambs were slaughtered after over night with feeding draw. Differences in daily nutrients intake among treatments were not statistically significantly. The UDN and total N intake were followed the intended treatments composition (P < 0.01). Live weight gain was not significantly affected by levels of UDN and NS supplementation. Slaughter body weight, hot and cold carcass weights and killing out proportion were not significantly affected by both NS supplementation and levels of UDN. Moreover, no differences in leg cut tissue (lean, subcutaneous fat: intramuscular fat and bone) among treatments. The main wholesale cuts weights were not significantly different among treatments. The differences in fat-tail weights between the NS and UDN treatments were not statistically significant.
机译：这项工作的目的是研究两种水平的瘤胃不可降解氮（7和10 g UDN / kg DM），饲喂两种水平的黑麦草（0和7.5 g NS / kg DM），以补充日粮羔羊的car体特征，使用2 x 2阶乘实验。使用了十六只单独的Karadi雄性羔羊（每次处理四只羔羊）。他们的体重约为34公斤活重，出生七个月。将日粮配制为给予40％NaOH处理的大麦秸秆DM至60％浓缩物DM。饲喂试验结束后，通宵吸食羔羊，整夜宰杀。治疗之间的每日营养摄入量差异无统计学意义。 UDN和总氮摄入遵循预期的治疗组成（P <0.01）。补充UDN和NS并没有显着影响体重的增加。补充NS和UDN水平对屠宰体重，hot体冷热体重和屠宰率均无显着影响。此外，治疗之间腿切组织（瘦肉，皮下脂肪：肌内脂肪和骨骼）没有差异。各处理之间的主要批发重量没有显着差异。 NS和UDN处理之间的尾巴重量差异无统计学意义。

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