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畜牧人

標(biāo)題: 高產(chǎn)母豬礦物質(zhì)需要的變化——需要什么及關(guān)鍵時(shí)期 [打印本頁]
作者: chexr    時(shí)間: 2007-9-21 10:25
標(biāo)題: 高產(chǎn)母豬礦物質(zhì)需要的變化——需要什么及關(guān)鍵時(shí)期
摘　要:現(xiàn)代養(yǎng)豬生產(chǎn)中，由于高產(chǎn)母豬品系的引入，使窩產(chǎn)仔數(shù)和斷奶仔豬數(shù)不斷增加，仔豬初生重和斷奶重也不斷提高。母豬妊娠的最后14天，胎兒將占總需求量近50％的礦物質(zhì)（常量和微量元素）沉積到發(fā)育中的自身體組織中。哺乳階段，母豬沉積的礦物質(zhì)比妊娠后期更高，并且隨著窩產(chǎn)仔數(shù)的增加而增加。這樣看來，妊娠后期和哺乳期是研究母豬礦物質(zhì)營養(yǎng)的關(guān)鍵時(shí)期。[



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