后备母猪选择BSC[彩图说明]

tjutarts

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后备母猪选择

生长情况
Growth

选择同窝猪中生长速度快的猪只。
Gilts should be in the fastest growing 50-60% of theircontemporary group.

生长速度快的猪女可以拥有较长的使用年限。
Adequate growth increases the probability of properreproductive development.

生长速度慢的猪女有可能出现初情期延迟的现象，并且在以后的饲养过程中问题较多。
Slow growing females (within a group) may have a delayed   first estrus and may be lifelong problem breeders.

背膘
Backfat

背膘厚度对于后备母猪选择是一个非常重要的指标。
Backfat is important ifreplacement females are produced within the herd.

对于良种猪群，通过《联邦国家猪群改进指导方针》获得合适的测量和调整标准。
Consult NSIFGuidelines for Uniform Swine Improvement to obtain proper measurement andadjustment criteria.

特定猪场的推荐背膘厚度会根据遗传、环境和终端市场的需求而改变。
Recommended levelsof backfat are farm specificand may change due to genetics, environment, and end market.


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zhuang1986

还带英文啊，学习中！！！

lengyifu

是个不错的 材料