End of rearing/start of lay - a key period for successful production

Paul Grignon Dumoulin

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End of rearing/start of lay - a key period for successful production

机译：结束饲养/开始产蛋-成功生产的关键时期

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The end of rearing and start of lay is a critical period for layers. Birds have to face a double challenge: finish their growth and start their production. They also have to adapt to a new environment, the laying house, after the stress of transfer. Management must be adapted in order to overcome these two events. Future performances of the layers will be influenced by management during this period. The importance of bodyweight at five weeks of age is well known. At end of rearing, bodyweight has little influence on the future performance of the layers, except for sexual maturity. The main factor influencing performance is in fact uniformity at 16 weeks of age. A good body-weight at end of rearing will mainly influence sexual maturity and egg size.Many farmers stop weighing the birds when egg production starts, while bodyweight control and growth at end of rearing/start of lay are the best indicators to define the quality of start of lay.

机译：饲养的结束和开始产蛋是蛋鸡生产的关键时期。鸟类必须面对双重挑战：完成生长并开始生产。在转移压力之后，它们还必须适应新环境，即蛋鸡舍。必须调整管理才能克服这两个事件。在此期间，各层的未来性能将受到管理层的影响。五周龄体重的重要性众所周知。饲养结束时，体重除了性成熟外，对蛋鸡未来的生长性能影响不大。影响性能的主要因素实际上是16周龄时的均匀性。育成期末良好的体重将主要影响性成熟度和蛋的大小。许多养殖者在开始产蛋时就停止称重禽类，而在育成期/开始产蛋后控制体重和生长是确定品质的最佳指标的开始。

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《International Poultry Production》 |2013年第3期|共1页
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Paul Grignon Dumoulin;
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中图分类畜牧、动物医学、狩猎、蚕、蜂;
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1. End of rearing/start of lay - a key period for successful production [J] . Paul Grignon Dumoulin International Poultry Production . 2013,第3期

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4. Young Resources in the EP Industry: Key Issues to a Successful Start [C] . T. Bruni, L. Tealdi 2005 SPE annual technical conference and exhibition (ATCE 2005) . 2005

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5. Mediating bone mineral status in laying hens by feeding increased calcium during rearing and the lay cycle. [D] . Fosnaught, Mary H. 2009

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End of rearing/start of lay - a key period for successful production

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