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1·Lower reproductive performance of high producing dairy cows is associated with negative energy balance (NEB).

高产奶牛繁殖性能下降与能量负平衡(NEB)有关。

2·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。

3·There is strong evidence that age, weight and smoking impact on general health and adversely on reproductive performance.

有明显的证据证明年龄、体重和吸烟影响全身健康和生育能力。

4·The production record of reproductive performance of Jinhua swine from Jinhua swine farm during 1979 to 1999 were used to study.

本研究资料取自金华猪场1979—1999年金华猪的繁殖性能生产记录。

5·The objectives of this experiment were to assess effects of dietary energy on sow reproductive performance and serum parameters.

研究了饲粮能量水平对母猪繁殖性能和血清参数的影响。

6·The objective of this study was to evaluate effects of partial substitution of concentrate with ryegrass on reproductive performance in Changjia sows.

用青绿饲料黑麦草部分替代精料饲喂长嘉母猪，研究替代后对母猪繁殖性能的影响。

7·However there is a need for further research focusing specifically on the relationship between diet and various levels of exercise on reproductive performance.

但是对于饮食和不同水平的锻炼与生育能力的关系需要进一步明确地研究。

8·Abstract: Lysine as the first limiting amino acids in sows feeds, and plays an important role in the reproductive performance and the milking potential of sows.

摘要赖氨酸作为母猪第一限制性氨基酸，对母猪繁殖性能和泌乳潜力的充分发挥具有重要的作用。

9·Abstract : Lysine as the first limiting amino acids in sows feeds, and plays an important role in the reproductive performance and the milking potential of sows.

摘要 ： 赖氨酸作为母猪第一限制性氨基酸，对母猪繁殖性能和泌乳潜力的充分发挥具有重要的作用。

10·During periods of stress, such as prepartum, postpartum, high temperature and transportation, milk production, immune function, reproductive performance of dairy cows are reduced.

奶牛在妊娠晚期、产奶早期、高温时期和运输过程中处于极度应激的状态下，生产性能、免疫力、繁殖性能均受到影响。