An assessment of reproductive and lifetime performances of Kagoshima Berkshire gilts and sows
An assessment of reproductive and lifetime performances of Kagoshima Berkshire gilts and sows
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DOI：
10.1111/asj.12140
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发表时间：
2014-03-01
影响因子：
2
通讯作者：
Sueyoshi, Masuo
中科院分区：
文献类型：
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作者：
Sasaki, Yosuke;Tokunaga, Tadaaki;Sueyoshi, Masuo
我们调查了鹿儿岛伯克夏后备母猪和母猪的繁殖和终生表现。我们检查了 2008 年至 2012 年一个从产仔到育成商业农场的 4419 头猪的 20 605 次胎次记录。所有动物的平均胎次(±SD)为3.0±2.1。就产仔性能而言，产仔数和活产仔数最高的母猪分别为 5 胎和 6 胎以及 3-6 胎母猪（P< 0.05）。在断奶和交配性能方面，2胎次母猪的断奶前死亡率最低（P<0.05）。断奶至首次交配间隔时间最长的是胎次 1 的猪，并且该间隔随着胎次的增加而缩短（P< 0.05）。 0胎和1胎的产仔率最低，4胎的产仔率最高（P< 0.05）。平均扑杀胎次、一生活产仔猪总数和一生非生产天数分别为 5.5±2.93 天、49.2±24.72 头猪和 132.1±83.34 天。这些动物的产仔数和生育力均低于主要在日本使用的 F1 杂交母猪，但按胎次计算的性能趋势相似。
We investigated the reproductive and lifetime performances of Kagoshima Berkshire gilts and sows. We examined 20 605 parity records of 4419 pigs for 2008 to 2012 on a farrow‐to‐finish commercial farm. The mean parity (± SD) of all animals was 3.0 ± 2.1. For farrowing performance, the highest numbers of total pigs born and pigs born alive were found in sows with parities 5 and 6 and with parity 3–6, respectively (P< 0.05). Regarding weaning and mating performance, sows with parity 2 had the lowest preweaning mortality (P< 0.05). The longest weaning‐to‐first‐mating interval was found in parity 1 pigs, and the interval decreased as parity increased (P< 0.05). Parities 0 and 1 pigs had the lowest farrowing rate and those with parity 4 had the highest farrowing rate (P< 0.05). The mean parity at culling, total number of pigs born alive in a lifetime, and nonproductive days in a lifetime were 5.5 ± 2.93, 49.2 ± 24.72 pigs, and 132.1 ± 83.34 days, respectively. These animals had a lower litter size and fertility that the F1crossbred sows mainly used in Japan, but a similar tendency for performance by parity.