Assessment of reproductive and growth performance of pigs on commercial swine farms in southern Kyushu, Japan
Assessment of reproductive and growth performance of pigs on commercial swine farms in southern Kyushu, Japan
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DOI：
10.1111/asj.13492
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发表时间：
2020-01-01
影响因子：
2
通讯作者：
Sueyoshi, Masuo
中科院分区：
文献类型：
--
作者：
Sasaki, Yosuke;Kawabata, Tadahiro;Sueyoshi, Masuo
本研究的目的是评估猪的生产力，以调查生产力的时间依赖性变化，并根据育种公司集团和猪繁殖与呼吸综合征（PRRS）的状态在日本九州南部的商业猪场的生产力进行比较。本研究使用的数据是从72个农场获得的2014年至2018年的245个年度生产率记录。平均母猪存栏量为481.2头。平均每头母猪每年断奶的猪数和每头母猪每年出售的商品猪数分别为23.7和21.6。从2014年到2018年，每窝活产猪从11.1头增加到11.9头（p < .05）。2016年，使用国内育种公司的农场数量与使用国际育种公司的农场数量相似，但2014年，2015年，2017年和2018年的猪数量较少（p < .05）。PRRS状态未知或不稳定的猪场与PRRS状态稳定或阴性的猪场相比，每年每窝活产猪数和每头母猪断奶猪数较少（分别为11.2 +/- 0.06 vs. 11.8 +/- 0.08头猪和22.6 +/- 0.38 vs. 25.0 +/- 0.22头猪; p <0.05）。这些结果可用于建立可行的目标和性能标准，以确定问题区域并改进生产。
The objective of the present study was to assess the productivity of pigs to investigate the time-dependent change in productivity and compare productivity according to breeding company group and porcine reproductive and respiratory syndrome (PRRS) status on commercial swine farms in southern Kyushu, Japan. Data used in the present study were 245 annual productivity records from 2014 to 2018 obtained from 72 farms. Average sow inventory was 481.2 sows. Mean numbers of pigs weaned per sow per year and market pigs sold per sow per year were 23.7 and 21.6, respectively. Pigs born alive per litter increased from 11.1 to 11.9 pigs from 2014 to 2018 (p < .05). Farms using domestic breeding companies had similar numbers in 2016 to those using international breeding companies, but fewer pigs in 2014, 2015, 2017, and 2018 (p < .05). Farms with an unknown or unstable PRRS status had fewer pigs born alive per litter and pigs weaned per sow per year than those with stable or negative PRRS statuses (11.2 +/- 0.06 vs. 11.8 +/- 0.08 pigs and 22.6 +/- 0.38 vs. 25.0 +/- 0.22 pigs, respectively; p < .05). These results can be used to establish feasible targets and standards of performance to identify problem areas and improve production.