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A survey of biological productivity of Prince Edward Island swine herds.

机译:爱德华王子岛猪群生物生产力的调查。

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摘要

Sow and feeder pig productivity were measured on a random sample of 32 Prince Edward Island swine farms (each producing over 1000 market hogs per year). Productivity parameters could be arranged in a hierarchy, with the highest level on farrow-finish operations represented by pigs weaned per sow per year. The 17 farrow-finish farms in this study averaged 19.6 (+/- 2.2 SD) pigs weaned per sow per year. Large variation between farms was observed with a range from 16.2 to 24.9 pigs weaned per sow per year. The major opportunities for improving productivity, as compared to reviewed targets, lie in reducing the average weaning age, reducing preweaning mortality, and reducing non-productive sow days per parity. The 14 feeder operations were characterized by 0.58 +/- 0.07 kg average daily gain. Average daily gain was negatively correlated with mortality (r = -0.662, p = 0.010), suggesting that herds that achieved a high rate of gain also had lower mortality.
机译:在32个爱德华王子岛养猪场(每个每年生产超过1000只生猪)的随机样本中测量母猪和饲养猪的生产力。生产力参数可以按层次排列,分娩后的最高水平以每年每头母猪断奶为代表。该研究中的17个分娩场平均每年每头母猪断奶19.6头(+/- 2.2 SD)。观察到农场之间的差异很大,每头母猪每年断奶的范围为16.2至24.9头。与已审查的目标相比,提高生产率的主要机会在于降低平均断奶年龄,降低断奶前死亡率以及减少每胎的非生产母猪天数。 14个喂料机的平均日增重为0.58 +/- 0.07 kg。平均日增重与死亡率呈负相关(r = -0.662,p = 0.010),表明获得高增速的牛群的死亡率也较低。

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