產蛋前期為開產至40周齡或產蛋率由5%至70%,因負擔較重,對粗蛋白的需要量隨產蛋率的提高而增加。此外,蛋殼的形成需要大量的鈣,因此對鈣的需要量增加。蛋氨酸、維生素、weiliangyuansudengyingyangzhibiaoyeyingshiliangtigao,quebaoyingyangchengfengongyingchongzu,liqiuyanchangchandangaofengqi,chongfenfahuiqishengchanxingneng。hangaiyuanliaoyingxuanyongkelijiaodadebeikefenhecushifen,bianyutiaoshi。jinkenengshaoyongyumidanbaifendengguoxisiliaoyuanliao,yimianyingxiangcaishi。
產蛋中期為40~60周齡或產蛋率由80%~90%的de高gao峰feng期qi過guo後hou,這zhe一yi時shi期qi蛋dan雞ji體ti重zhong幾ji乎hu沒mei有you增zeng加jia,產chan蛋dan率lv開kai始shi下xia降jiang,營ying養yang需xu要yao較jiao高gao峰feng期qi略lve有you降jiang低di。但dan由you於yu蛋dan重zhong增zeng加jia,飼si糧liang中zhong的de粗cu蛋dan白bai質zhi水shui平ping不bu可ke降jiang得de太tai快kuai,應ying采cai取qu試shi探tan性xing降jiang低di蛋dan白bai質zhi水shui平ping較jiao為wei穩wen妥tuo。
產蛋後期為60周齡以後或產蛋率降至70%以yi下xia,這zhe一yi時shi期qi的de產chan蛋dan率lv持chi續xu下xia降jiang。由you於yu雞ji齡ling增zeng加jia,對dui飼si料liao中zhong營ying養yang物wu質zhi的de消xiao化hua和he吸xi收shou能neng力li下xia降jiang,蛋dan殼ke質zhi量liang變bian差cha,飼si糧liang中zhong應ying適shi當dang增zeng加jia礦kuang物wu質zhi飼si料liao的de用yong量liang,以yi提ti高gao鈣gai的de水shui平ping。產chan蛋dan後hou期qi隨sui產chan蛋dan量liang下xia降jiang,母mu雞ji對dui能neng量liang的de需xu要yao量liang相xiang應ying減jian少shao,在zai降jiang低di粗cu蛋dan白bai質zhi水shui平ping的de同tong時shi不bu可ke提ti高gao能neng量liang水shui平ping,以yi免mian使shi雞ji變bian肥fei而er影ying響xiang生sheng產chan性xing能neng。
此外,褐殼蛋雞與白殼蛋雞相比體重和蛋重較大,對主要營養物質需要量也較高,也應該區別對待。
手機版




