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首页> 外文期刊>The Kasetsart Journal >Growth and Carcass Quality of Nativ chickens Raised under the Natural Day length and the photoperiod of Twenty-three Hours a Day
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Growth and Carcass Quality of Nativ chickens Raised under the Natural Day length and the photoperiod of Twenty-three Hours a Day

机译：在自然日长度和每天二十三小时的光周期下饲养的土鸡的生长和Car体质量

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摘要

The effect o long photoperiod on growth, carcass yield, and carcass composition in native chickens were examine. Two lighting programmes of natural day length (NDL) and photoperiod of 23 hours/day (23L:1D) were set. It was found that the 23L:1D group tended to have better growth than the NDL group. Average body weights of the 23L:1D and NDL groups at 16 weeks of age were 1,508 g and 1,451 g and At 20 weeks of age were 1,803 g and 1,746 g, respectively, while feed conversion ratios of the two groups Were not different (p>0.05) Both groups had low mortality rate of only 2-3/100 with no sign of leg disorder, Ascites, and breast blister.
机译：研究了长期光周期对天然鸡生长，car体产量和car体组成的影响。设置了两个自然日长（NDL）和光周期为23小时/天（23L：1D）的照明程序。发现23L：1D组倾向于比NDL组具有更好的生长。 23L：1D和NDL组在16周龄时的平均体重分别为1,508 g和1,451 g，在20周龄时分别为1,803 g和1,746 g，而两组的饲料转化率没有差异（p > 0.05）两组的死亡率都很低，仅为2-3 / 100，没有腿部疾病，腹水和乳房水泡的迹象。

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