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首页> 外文期刊>The Indian Journal of Animal Sciences >Effect of feeding oak leaves on nutrient utilization and growth performance goats in Kumaon hills of temperate sub Himalayas
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Effect of feeding oak leaves on nutrient utilization and growth performance goats in Kumaon hills of temperate sub Himalayas

机译：喜马拉雅温带亚库马山丘上取食橡树叶对山羊养分利用和生长性能的影响

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A 120 days of growth study was conducted on goats to assess the effect of tanniniferous oak leaves (Quercus semecarpifolia) on nutrient utilization and growth performance. Growing kids (18) of 7-9 month-old (13.13±0.99 kg) were randomly divided intohomogenous groups T_1, T_2 and T_3 of 6 in each. All the animals were fed same concentrate mixture but, the roughage source was different and the concentrate: roughage source was maintained at about 40: 60 ratio. Native grass hay (Heteropogon contortus)was fed in T_1 and T_3 which was replaced by oak tree leaves in T_2 Tannic acid was supplemented in T_3 at par with the hydrolysable tannin content in oak leaves fed to T_2 A metabolic trial of 6 days duration was conducted after 90 days of growth trial.DM intake through roughage (oak leaves) in T_2 was higher than T_1 and T_3 The total DM intake (g d~(-1) kg(-1) W~(0.75)) was also higher in T2 than T_1 and T_3. The nutrient digestibilities were similar except ether extract digestibility which was higher in T_2 than T_1 and T_3. N balance (g d(-1)) was similar in all 3 groups. However, N retention as percent of absorbed nitrogen was higher in T_2 than T_3, but at par with T_1. Average daily gain (g d(-1)) was higher in T_2 (60.36) than T_1 (38.12) andT_3 (26.46) which were at par. Feed gain ratio (DMI/unit body weight gain) was comparatively better in T_2 (12.93) than T_3 (23.24) but at par with T_1 (17.29). It was concluded that feeding of oak leaves (CT, 0.85% and HT, 4.4% in diet) improved nutrient utilization, growth performance and feed efficiency in kids compared to animals fed local grass hay with or without supplementation of tannic acid.
机译：在山羊上进行了为期120天的生长研究，以评估单宁橡树叶（Quercus semecarpifolia）对养分利用和生长性能的影响。将7-9个月大（13.13±0.99千克）的成长中的孩子（18个）随机分为6组，分别为同质组T_1，T_2和T_3。给所有动物饲喂相同的浓缩物混合物，但是，粗饲料来源不同，并且浓缩物：粗饲料来源保持在约40:60的比例。在T_1中饲喂天然干草（Heteropogon contortus），然后在T_2中用橡树叶代替T_3，然后在T_3中补充单宁酸，使其与T_2饲用的橡树叶中的可水解单宁含量相等。进行了为期6天的代谢试验经过90天的生长试验后，T_2中通过粗饲料（橡树叶）摄入的DM高于T_1和T_3。T2中的DM摄入总量（gd〜（-1）kg（-1）W〜（0.75））也更高比T_1和T_3大。除了醚提取物的消化率在T_2中高于T_1和T_3之外，其他养分的消化率均相似。所有三组的氮平衡（g d（-1））相似。但是，N保留量（占吸收氮的百分比）在T_2中高于T_3，但与T_1持平。 T_2（60.36）的平均日增重（g d（-1））高于同等水平的T_1（38.12）和T_3（26.46）。饲料增重比（DMI /单位体重增加）在T_2（12.93）比T_3（23.24）好，但与T_1（17.29）相当。结论是，饲喂橡树叶（CT，0.85％和HT，占日粮的4.4％）与饲喂有或没有鞣酸的当地草干草的动物相比，提高了孩子的养分利用率，生长性能和饲料效率。

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