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Chemical composition of pigeon crop milk and factors affecting its production: a review

文献类型： 外文期刊

作者： Jin, Cheng-long 1 ; He, Ya-ai 1 ; Jiang, Shi-guang 1 ; Wang, Xiu-qi 1 ; Yan, Hui-chao 1 ; Tan, Hui-zhe 3 ; Gao, Chun-qi 1 ;

作者机构： 1.South China Agr Univ, Coll Anim Sci, Guangdong Prov Key Lab Anim Nutr Control, Key Lab Chicken Genet Breeding & Reprod,Minist Agr, Guangzhou 510642, Peoples R China

2.Guangdong Acad Agr Sci, Inst Anim Sci, Key Lab Anim Nutr Feed Sci South China, State Key Lab Livestock & Poultry Breeding,Minist, Guangzhou 510640, Peoples R China

3.WENS Foodstuff Grp Co Ltd, Yunfu 527400, Guangdong, Peoples R China

关键词： pigeon crop milk; squab growth; influencing factors; hormones; signaling pathway

期刊名称：POULTRY SCIENCE （ 影响因子：4.4； 五年影响因子：4.4 ）

ISSN： 0032-5791

年卷期： 2023 年 102 卷 6 期

页码：

收录情况： SCI

摘要： Pigeons are important commercial poul-try in addition to being ornamental birds. In 2021, more than 111 million pairs of breeding pigeons were kept in stock and 1.6 billion squabs were slaughtered for meat in China. However, in many countries, pigeons are not domestic birds; thus, it is necessary to elucidate the fac-tors involved in their growth and feeding strategy due to their economic importance. Pigeons are altricial birds, so feedstuffs cannot be digested by squabs, which instead are fed a mediator named pigeon crop milk. Dur-ing lactation, breeding pigeons (both female and male) ingest diets and generate crop milk to feed squabs. Thus, research on squab growth is more complex than that on chicken and other poultry. To date, research on the mea-surement of crop milk composition and estimation of the factors affecting its production has not ceased, and these results are worth reviewing to guide production. More -over, some studies have focused on the formation mecha-nism of crop milk, reporting that the synthesis of crop milk is controlled by prolactin and insulin-activated pathways. Furthermore, the Janus kinase 2 (JAK2)-signal transducer and activator of transcription 5 (STAT5) pathway, target of rapamycin (TOR) path-way and AMP-activated protein kinase (AMPK) path-way were also reported to be involved in crop milk synthesis. Therefore, this review focuses on the chemical composition of pigeon crop milk and factors affecting its production during lactation. This work explores novel mechanisms and provides a theoretical reference for improving production in the pigeon industry, including for racing, ornamental purposes, and production of meat products.

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