Objective: To explore the relationship between cerebral palsy and the parity, birth weight in twins.
目的：探讨双胎儿童的产次、出生体重与脑瘫发病率之间的关系。
Objective: To explore the relations between cerebral palsy and the parity, birth weight in twins.
目的：探讨双胎儿童的产次、出生体重与脑瘫发病率之间的关系。
The results show that estimates the value of the fixed effects of stillbirth and mummies were from larger than large is species, parity, birth month and month of breeding.
通过固定效应值估计发现，对死胎和木乃伊的影响从小到大依次为品种、胎次、配种月份和产仔月份。
The study showed that parity, birth month, backfat thickness had significant effect on reproductive performance of sows.
表明胎次、产仔月份、背膘厚度对母猪繁殖性能有较大影响。
The study showed that parity, birth month, backfat thickness had significant effect on reproductive performance of sows.
表明胎次、产仔月份、背膘厚度对母猪繁殖性能有较大影响。
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