高密度層疊式飼養(yǎng)模式下蛋雞熱應(yīng)激觀察及經(jīng)濟(jì)損失研究
發(fā)布時間:2018-12-11 06:11
【摘要】:研究以八層層疊式蛋雞飼養(yǎng)模式的雞舍作為研究觀測對象,雞舍內(nèi)存欄海蘭褐產(chǎn)蛋雞數(shù)量為101 952只,研究夏季雞舍內(nèi)平均溫度30℃、相對濕度72%~80%條件下熱應(yīng)激對蛋雞生產(chǎn)性能和經(jīng)濟(jì)效益的影響。結(jié)果顯示:采用高密度層疊式飼養(yǎng)模式飼養(yǎng)的蛋雞群在夏季高溫季節(jié)會出現(xiàn)典型的熱應(yīng)激現(xiàn)象,包括產(chǎn)蛋率下降、蛋重減小、采食量下降、周死淘率上升等現(xiàn)象,造成的直接經(jīng)濟(jì)損失平均達(dá)1.5元/只。建議在此養(yǎng)殖模式下蛋雞熱應(yīng)激的防治應(yīng)從環(huán)境控制、飼養(yǎng)管理和營養(yǎng)調(diào)控三方面綜合考慮。
[Abstract]:In this study, 101,952 layers of Hailan brown laying hens were stored in the henhouse, and the average temperature of the henhouse in summer was 30 鈩,
本文編號:2372027
[Abstract]:In this study, 101,952 layers of Hailan brown laying hens were stored in the henhouse, and the average temperature of the henhouse in summer was 30 鈩,
本文編號:2372027
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