公猪和母猪混养对鹿儿岛黑猪（伯克夏猪）背膘厚和血清代谢物谱的影响。
Effect of mixed rearing of barrows and gilts on backfat thickness and serum metabolite profiles of the Kagoshima-Kurobuta (Berkshire) pig.
机构信息
Livestock Research Institute, Kagoshima Prefectural Institute for Agricultural Development, Kirishima, Japan.
Economic and Agricultural Cooperative Association of Kagoshima Prefecture, Kagoshima, Japan.
出版信息
Anim Sci J. 2021 Jan-Dec;92(1):e13655. doi: 10.1111/asj.13655.
We investigated the effect of mixed rearing of barrows and gilts on the backfat thickness and the serum metabolite profiles of Kagoshima-Kurobuta (Berkshire) pigs. A total of 149 pigs with an average body weight of 35 kg were divided into the following groups: 100%, 90%, 70%, 50%, 30%, 10%, and 0% groups consisting of 10 barrows (1 pen), 9 barrows + 1 gilt (3 pens), 7 barrows + 3 gilts (2 pens), 5 barrows + 5 gilts (3 pens), 3 barrows + 7 gilts (2 pens), 1 barrow + 9 gilts (3 pens), and 9 gilts (1 pen), respectively. All pigs were raised to a shipping weight of 120 kg. Mixed rearing significantly reduced (p < 0.001) backfat thickness, and the optimum mixing ratio of barrows and gilts was 7:3 (the 70% group). Four types of circulating sex steroids were found in both the barrows and gilts in the 50% group but were not detected in barrows from the 100% group. These results indicated that mixed rearing of barrows and gilts was effective for reducing the backfat thickness of barrows, and induced sex steroid hormones may influence the backfat thickness of barrows in mixed-reared groups.
我们研究了公猪和母猪混养对鹿儿岛黑猪（伯克夏猪）背膘厚度和血清代谢物谱的影响。总共 149 头体重平均为 35kg 的猪被分为以下组：100%、90%、70%、50%、30%、10%和 0%组，每组包含 10 头公猪（1 个圈舍）、9 头公猪+1 头母猪（3 个圈舍）、7 头公猪+3 头母猪（2 个圈舍）、5 头公猪+5 头母猪（3 个圈舍）、3 头公猪+7 头母猪（2 个圈舍）、1 头公猪+9 头母猪（3 个圈舍）和 9 头母猪（1 个圈舍）。所有猪都被饲养到 120kg 的出栏体重。混养显著降低（p<0.001）了背膘厚度，公猪和母猪的最佳混合比例为 7:3（70%组）。在 50%组中，无论是公猪还是母猪，都发现了 4 种循环性激素，但在 100%组的公猪中没有检测到。这些结果表明，公猪和母猪混养可以有效降低公猪的背膘厚度，而诱导的性激素可能会影响混养组中公猪的背膘厚度。
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