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首页> 外文期刊>Tropical Animal Health and Production >Level and period of realimentation to assess improvement in body condition and carcass quality in cull ewes.
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Level and period of realimentation to assess improvement in body condition and carcass quality in cull ewes.

机译：实施水平和周期，以评估淘汰情况下母羊身体状况和car体质量的改善。

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Improvement in body condition was assessed in 40 cull ewes (>6 years), equally distributed in two groups and realimented with ad libitum roughage (gram straw) and two levels of concentrate feeding, i.e., 2.5% (T1) of live weight (LW) and ad libitum (T2). Five representative animals from an initial 45 were slaughtered at the initiation of the study (0 day) and five animals from each treatment at 44, 67, and 90 days of experiment for carcass attributes. Improvement in body condition score (BCS), nutrient utilization, feed efficiency, and carcass traits were assessed at 44, 67, and 90 days. Metabolism trial of 6-day collection of feed, feces, and urine samples was conducted on five representative ewes from each group after 60 days of feeding. The level of concentrate feeding on LW gain and BCS was significant, and the duration of realimentation showed a linear improvement (P<0.001). The digestibility and intake of dry matter, organic matter, and crude protein was higher (P<0.05) in T2. The N intake, absorption, and balance showed a similar trend. Increase (P<0.05) in total N, trichloroacetic acid precipitable N, and ammonia N was observed with extension of realimentation period. Blood metabolic profile also showed improvement (P<0.05) from an undernourished state to normal after alimentation. Animals in T2 accumulated higher LW with minimal expenditure of metabolizable energy (73.4 vs 79.1 MJ) and higher efficiency of feed conversion during 68 to 90 days of realimentation. Linear improvement (P<0.01) in carcass traits (preslaughter weight, empty live weight, hot carcass weight, dressing percentage, and amount of subcutaneous and intramuscular fat) and composition of longissimus dorsi muscle was observed. Ad lib concentrate supplementation for a period of 90 days may thus be considered appropriate for achieving desired efficiency of gain and improvement in body condition of cull ewes for quality mutton production.
机译：在40头母羊（> 6年）中评估了身体状况的改善，将其平均分为两组，并采用任意粗饲料（克秸秆）和两种精饲料喂养水平，即2.5％（T 1 2 ）。在研究开始（0天）时，将最初的45只中的5只有代表性的动物处死，在第44天，67天和90天的实验中，将每种处理中的5只动物的for体属性处死。在第44、67和90天评估了身体状况评分（BCS），养分利用率，饲料效率和car体性状的改善。喂食60天后，对每组五只有代表性的母羊进行为期6天的饲料，粪便和尿液样品代谢试验。精饲料饲喂水平对LW增重和BCS的影响显着，且变态持续时间显示出线性改善（P <0.001）。 T 2 中干物质，有机物质和粗蛋白的消化率和摄入量较高（P <0.05）。氮的吸收，吸收和平衡表现出相似的趋势。随着实施期的延长，总氮，三氯乙酸可沉淀氮和氨氮均增加（P <0.05）。饮食后，血液代谢状况也从营养不良状态恢复到正常（P <0.05）。在T 2 中的动物在68到90天的生产过程中积累了较高的LW，而代谢能的消耗最少（73.4 vs 79.1 MJ），饲料转化效率更高。观察到of体特征（屠宰前体重，空生体重，热hot体重量，敷料百分比以及皮下和肌肉内脂肪的数量）和背最长肌的线性改善（P <0.01）。因此，可以将随意浓缩饲料补充90天视为适合于实现期望的增收效率和改善优质母羊生产的母羊身体状况的方法。

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