“限料限水法”强制母鸡醒抱提早产蛋效果好

'抱窝'是蛋鸡孵卵育雏的本能行为,受内分泌系统控制。当蛋鸡脑垂体前叶分泌的催乳素增加时,蛋鸡卵巢萎缩出现'抱窝'现象,时间一般在气温上升的5-6月份,持续20d左右,时间较长的可达1~2个月。产蛋箱内有垫草且光线较暗容易引起蛋鸡抱窝,产蛋窝中存蛋过多、产蛋初期饲料蛋白质水平低也容易诱发蛋鸡抱窝。最近几年,通过实践发现采用'限料限水法'强制母鸡醒抱提早产蛋能够起到很好的效果,现就该种方法进行研究,希望对同行有所助益。

Effects of different ration of NPK fertilizer on the grain yield and protein content in forage rice

Different ratios of NPK were adopted in this research to study its effects on the objective traits of 2 early forage-rice varieties, and to obtain the optimum ratio to further improve the application technique in theory. At the same time, the possibility of increasing yield and protein content in the grain through cultivation technique was also studied. The conclusions were：