摘要
[ Objective] To study the effect of feed intake characteristic on growth performance in Luyu - Duroc and Yorkshire. [ Method] 89 Luyu - Yorkshire and 82 Luyu -Duroc were chosed and fed in the automatic determination system for swine production, 24h real-time monitoring feed in- take traits and growth performance, [ Result] It showed that： as feed intake increased, average daily gain （ADG） and weight of 4 months were en- hanced, days on test, feed conversion ratio （FCR） and age-corrected of weight at 100 kg were reduced, feed intake positively regulated growth performance of Luyu -Doroc and Yorkshire. Feed intake significantly impacted ADG and days on test （P 〈0.01 ）, notably affected age-corrected of weight at 100 kg of Luyu - Duroc and FCR of Luyu - Yorkshire （ P〈 0.05）, variation tendency of feed frequency was consistent with feed intake and feed time, and the correlation was significant. [ Conclusion] The correlation between feed intake traits and growth performance was mainly caused by feed intake, ADG and FCR, however, predictability of feed intake was stronger than ADG and FCR, so in the actual selection feed intake was increased in pig breeding, thus at the same time to enhance ADG and to reduce FCR.
[ Objective] To study the effect of feed intake characteristic on growth performance in Luyu - Duroc and Yorkshire. [ Method] 89 Luyu - Yorkshire and 82 Luyu -Duroc were chosed and fed in the automatic determination system for swine production, 24h real-time monitoring feed in- take traits and growth performance, [ Result] It showed that： as feed intake increased, average daily gain （ADG） and weight of 4 months were en- hanced, days on test, feed conversion ratio （FCR） and age-corrected of weight at 100 kg were reduced, feed intake positively regulated growth performance of Luyu -Doroc and Yorkshire. Feed intake significantly impacted ADG and days on test （P 〈0.01 ）, notably affected age-corrected of weight at 100 kg of Luyu - Duroc and FCR of Luyu - Yorkshire （ P〈 0.05）, variation tendency of feed frequency was consistent with feed intake and feed time, and the correlation was significant. [ Conclusion] The correlation between feed intake traits and growth performance was mainly caused by feed intake, ADG and FCR, however, predictability of feed intake was stronger than ADG and FCR, so in the actual selection feed intake was increased in pig breeding, thus at the same time to enhance ADG and to reduce FCR.
基金
supported by the Agricultural Elite Project of Shandong Province (2010LZ013-02)
the National Pig Industry Technology System (CARS-36)
