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持续高温对不同性别北京油鸡脂肪代谢及血液脂肪细胞因子水平的影响

DOI: 10.3969/j.issn.1006-267x.2012.06.007

Keywords: 脂肪代谢,脂肪细胞因子,持续高温,北京油鸡

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Abstract:

本研究旨在考察持续高温对不同性别北京油鸡脂肪代谢及血液脂肪细胞因子水平的影响。选择健康、体重相近的49日龄北京油鸡公母各72只[公鸡平均体重(608.58±13.07)g;母鸡平均体重(518.50±8.33)g],随机分在2个处理中:高温组,(35.00±0.37)℃;适温组,(25.00±0.38)℃,每个处理设6个重复,每个重复6只鸡。试验持续23d。测定试验第12、23天时的血液生化指标、血液脂肪细胞因子水平及脂肪组织脂蛋白酯酶活性。结果表明:1)对公鸡而言:持续高温12d时血清胰岛素水平显著升高(P<0.01),血浆甘油三酯含量显著降低(P<0.01)。持续高温23d时血清胰岛素水平和血浆甘油三酯含量显著降低(P<0.01),血浆葡萄糖含量显著升高(P<0.01);对母鸡而言:持续高温12d时血浆甘油三酯、游离脂肪酸含量显著降低(P<0.05)。持续高温23d时血浆甘油三酯、游离脂肪酸含量无显著变化(P>0.05),血浆极低密度脂蛋白含量有增加趋势(P=0.065),血浆葡萄糖含量显著升高(P<0.01)。2)持续高温12d时公母鸡的肌间脂肪脂蛋白酯酶活性都显著降低(P<0.05),持续高温23d时公鸡的肌间脂肪脂蛋白酯酶活性显著降低(P<0.05),而母鸡的无显著变化(P>0.05)。3)公母鸡血浆脂联素、抵抗素水平在高温下都无显著变化(P>0.05);持续高温12d时公鸡血浆瘦素水平显著降低(P<0.01),母鸡的显著升高(P<0.05)。由此可知,随着持续高温时间的延长,母鸡血浆游离脂肪酸、甘油三酯含量及肌间脂肪组织脂蛋白酯酶活性受高温影响下降程度减小,公鸡血浆甘油三酯含量及脂肪组织脂蛋白酯酶活性下降程度加大。

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