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孵化和育雏期间雄性和雌性家鸽(Columba livia domestica)作物组织中脂肪酸转运蛋白和脂肪酸合成相关基因的差异表达。

Differential expression of fatty acid transporters and fatty acid synthesis-related genes in crop tissues of male and female pigeons (Columba livia domestica) during incubation and chick rearing.

作者信息

Xie Peng, Wang Xue-Ping, Bu Zhu, Zou Xiao-Ting

机构信息

a College of Life Science , Huaiyin Normal University , Huaian , China.

b Poultry Institute , Chinese Academy of Agricultural Sciences , Yangzhou , China.

出版信息

Br Poult Sci. 2017 Oct;58(5):594-602. doi: 10.1080/00071668.2017.1357798. Epub 2017 Sep 12.

Abstract
  1. The growth performance of squabs reared solely by male or female parent pigeons was measured, and the changes of lipid content of crop milk and the expression profiles of genes potentially involved in lipid accumulation by crop tissues of parent pigeons were evaluated during incubation and chick rearing. 2. Squabs increased in body weight during 25 d of rearing, whereas both male and female pigeons lost weight after finishing rearing chicks, and the weight loss of male pigeons was significantly greater than that of female parent pigeons. Lipid content of crop milk from both parent pigeons gradually decreased to the crude fat level in the formulated diet after 10 d (R10) of chick rearing. 3. The gene expression of fatty acid translocase (FAT/CD36), fatty acid-binding protein 5 (EFABP) and acyl-CoA-binding protein (ACBP) in male pigeon crop tissue were the greatest at 17 d (I17) of incubation. In female pigeons, FAT/CD36 expression was the highest at I14, and both EFABP and ACBP expression peaked at I14 and R7. The expression of acetyl-CoA carboxylase and fatty acid synthase in male pigeons reached the maximum level at R1, while they peaked at I14 and I17, respectively in female pigeons. The gene expression of peroxisome proliferators-activated receptor-gamma (PPARγ) was the greatest at I17 in the male, while it was at I14 in the female. However, no regular changing pattern was found in PPARα gene expression in male pigeons. 4. These results indicated that male and female pigeons may make different contributions in rearing squabs. The gene expression study suggested that fatty acids used in lipid biosynthesis of crop milk probably originated from both exogenous supply and de novo synthesis. The sex of the parent pigeon affected the lipid content of crop milk and the expression profiles of genes involved in fatty acid transportation and lipogenesis.
摘要
  1. 测定了仅由雄性或雌性亲鸽饲养的乳鸽的生长性能,并评估了育雏期和育雏过程中嗉囊乳脂质含量的变化以及亲鸽嗉囊组织中可能参与脂质积累的基因表达谱。2. 乳鸽在饲养25天期间体重增加,而雄性和雌性亲鸽在育雏结束后体重减轻,且雄性亲鸽的体重减轻显著大于雌性亲鸽。育雏10天(R10)后,双亲嗉囊乳的脂质含量逐渐降至配方饲料中的粗脂肪水平。3. 雄性鸽嗉囊组织中脂肪酸转运蛋白(FAT/CD36)、脂肪酸结合蛋白5(EFABP)和酰基辅酶A结合蛋白(ACBP)的基因表达在孵化17天(I17)时最高。在雌性鸽中,FAT/CD36表达在I14时最高,EFABP和ACBP表达均在I14和R7时达到峰值。雄性鸽中乙酰辅酶A羧化酶和脂肪酸合酶的表达在R1时达到最高水平,而在雌性鸽中分别在I14和I17时达到峰值。过氧化物酶体增殖物激活受体γ(PPARγ)的基因表达在雄性中于I17时最高,而在雌性中于I14时最高。然而,雄性鸽中PPARα基因表达未发现规律变化模式。4. 这些结果表明,雄性和雌性亲鸽在育雏过程中可能做出不同贡献。基因表达研究表明,嗉囊乳脂质生物合成中使用的脂肪酸可能既来源于外源供应也来源于从头合成。亲鸽的性别影响嗉囊乳的脂质含量以及参与脂肪酸运输和脂肪生成的基因表达谱。

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