12. These results preliminarily indicated that allele C of T/C polymorphic site of HIOMT gene is a potential DNA marker for improving litter size in goats.
13. The economic efficiency of swine industry is influenced by littersize deeply and there was a positive correlation between ovulation rate and litter size.
繁殖性状是非常重要的经济性状，产仔数的高低直接影响养猪业的生产效益，而排卵率和产仔数呈正相关。
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14. For the litter size, estimates of the proportion of total variance accounted for by paternally and maternally transmitted gametes were 1.1% and 2.3% respectively.
马头山羊产羔数父系和母系配子印迹效应的方差组分占总方差的比率分别为1.1%和2.3%。
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15. The ancestry of pedigree pooches is well recorded, their generation time is short and their litter size reasonably large, so there is plenty of material to work with.
有关纯种狗祖先的记载相当完备，他们寿命短、体型大的特点为研究提供了大量的素材。
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16. Ovulation rate is the principle factor limiting littersize in gilts and increasing the level of feed intake prior to mating will significantly increase ovulation rate.
排卵率是限制母猪窝重的主要因子，在配种前提高采食量能显著性地增加排卵效率。
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17. Increasing nutrition and management by creep feeding, offering milk replacer to Suckling pigs and reducing littersize were effective in increasing weaning weight by 0.5kg per pig.
18. The results of variance analysis indicated that littersize had extremely significant difference between populations, which showed that various populations had different genetic structure.
19. Some researches about high reproductive traits of pigs had been confirmed that the estrogen receptor gene(ESR)was the main gene affecting the litter size trait, which could decide1~1.5piglets.
在猪的高繁殖力特性研究中证实，雌激素受体（ESR）基因是可影响产仔数1～1.5头的主效基因。
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20. The additive effect of the gene on littersize in Tailiu Pig is 1.39 higher than the allele in Landrace. The gene in Taihu Pig is dominant to the allele in Landrace with dominant ratio of 0.81.
21. The additive effect of the gene on littersize in Tailiu Pig is 1.39 higher than the allele in Landrace. The gene in Taihu Pig is dominant to the allele in Landrace with dominant ratio of 0.81.
