不同饲养密度对育雏期种鸽生殖和免疫功能发育的影响

IF 1.6 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE British Poultry Science Pub Date : 2024-04-01 Epub Date: 2024-02-09 DOI:10.1080/00071668.2024.2308273
P Xie, L Wang, J Zhu, Y Liu, M Wei, D Gong, T Liu
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引用次数: 0

摘要

1.饲养密度(SD)与动物性能密切相关。本实验旨在评估幼鸽在不同放养密度下生殖和免疫功能的发育情况。 2. 将 288 只(雌雄各半)40 日龄的幼鸽(体重 400 ± 15 g)分为四组:高放养密度组(HSD;0.308 m3/羽)、标准放养密度组(SD;0.616 m3/羽)、低放养密度组(LSD;1.232 m3/羽)和笼养组(对照组;0.04125 m3/羽)。结果表明,笼养雄鸽的睾丸指数、睾酮含量和雄激素受体基因的基因表达量最高。雌鸽的雌二醇、孕酮浓度和生殖激素受体基因的 mRNA 水平最高。雄鸽的脾脏指数(器官重量占总重量的百分比)在LSD组达到峰值(0.09 ± 0.020),胸腺指数在SD组达到峰值(0.23 ± 0.039)。4.LSD组雌、雄鸽脾脏中IL-1β、IL-8、IFN-γ、TGF-β和toll样受体2(TLR-2)mRNA水平均达到最高值。 5.笼养幼雄鸽睾丸发育加快,低密度饲养幼雌鸽生殖机能发育加快。较大的活动空间有助于提高雄鸽和雌鸽的免疫功能。
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Effects of different stocking densities on the development of reproductive and immune functions in young breeder pigeons during the rearing period.

1. Stocking density (SD) is closely related to animal performance. This experiment was designed to evaluate the development of reproductive and immune functions of young pigeons under different SDs.2. A total of 288 (half male and half female) 40-day-old pigeons (body weight 400 ± 15 g) were allocated into four groups: High stocking density (HSD; 0.308 m3/bird), standard stocking density (SD; 0.616 m3/bird), and low stocking density (LSD; 1.232 m3/bird) and a caged (control; 0.04125 m3/bird). Every group had six replicates of the same sex.3. The results showed that caged male pigeons had the highest testis index, testosterone content, and gene expression of the androgen receptor gene. LSD treatment induced the highest concentrations of oestradiol, progesterone and mRNA levels of reproductive hormone receptor genes in female pigeons. In male pigeons, the spleen index (organ weight calculated as a percentage of total body weight) showed a peak level (0.09 ± 0.020) in the LSD group, and the thymus index peaked (0.23 ± 0.039) in SD group. However, the index for ovary, spleen, thymus and bursa of Fabricius in female pigeons showed no significant changes among different groups.4. The IL-1β, IL-8, IFN-γ, TGF-β and toll-like receptor 2 (TLR-2) mRNA levels reached their maximum values in both male and female pigeon spleens in the LSD group.5. Young male pigeons housed in cages showed increased testicular development while low stocking density increased the development of reproductive function in young female pigeons. A larger activity space could help enhance the immune function of both male and female pigeons.

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来源期刊
British Poultry Science
British Poultry Science 农林科学-奶制品与动物科学
CiteScore
3.90
自引率
5.00%
发文量
88
审稿时长
4.5 months
期刊介绍: From its first volume in 1960, British Poultry Science has been a leading international journal for poultry scientists and advisers to the poultry industry throughout the world. Over 60% of the independently refereed papers published originate outside the UK. Most typically they report the results of biological studies with an experimental approach which either make an original contribution to fundamental science or are of obvious application to the industry. Subjects which are covered include: anatomy, embryology, biochemistry, biophysics, physiology, reproduction and genetics, behaviour, microbiology, endocrinology, nutrition, environmental science, food science, feeding stuffs and feeding, management and housing welfare, breeding, hatching, poultry meat and egg yields and quality.Papers that adopt a modelling approach or describe the scientific background to new equipment or apparatus directly relevant to the industry are also published. The journal also features rapid publication of Short Communications. Summaries of papers presented at the Spring Meeting of the UK Branch of the WPSA are published in British Poultry Abstracts .
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