A retrospective study of female reproductive parameters in the Kunming dog.,Animal Science Journal

当前位置： X-MOL 学术 › Anim. Sci. J. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A retrospective study of female reproductive parameters in the Kunming dog.
Animal Science Journal ( IF 2 ) Pub Date : 2017-09-30 , DOI: 10.1111/asj.12914
Yun-Fang Wei ₁ , Jiu-Sheng Wan ₁ , Fang-Liang Chen ₁ , Chao Chen ₁ , Jing Li ₁ , Lu-Guang Cheng ₁ , Ai-Guo Mao ₁ , Fei-Xiang Li ₁ , Bin Wang ₁ , Qing-Guo Huang ₁ , Shu-Sheng Tang ₁ , Hong-Jiang Wei _{2,

3}

Affiliation

The Kunming dog is the first and only working dog breed from China to be recognized worldwide. As a domestic working dog, its excellent working performance has been well established; however, its normal reproductive parameters are not well understood. Therefore, this study was conducted to document the main reproductive parameters of this purebred working dog in field breeding conditions. Data on 1004 heats (753 with mating) from 203 bitches between 2008 to 2014, were collected and analyzed. The pregnancy rate and whelping rate was 79.42% and 75.30%, respectively. Finally, for 567 litters (4298 puppies), the mean litter size was 7.19 ± 0.12 puppies (range 1-15). The mean gestation period and birth weight were approximately 61.64 ± 0.10 days and 407.25 ± 1.21 g. The mean sex ratio was 1.03 males to 1.00 female. Estrus occurred throughout the year with no significant differences between seasons and months (P > 0.05), which confirms that Kunming dogs are non-seasonal breeders; births occurred in every month of the year. Pregnant bitches exhibited significantly longer inter-estrus intervals than non-pregnant bitches (220.85 ± 2.05 vs. 180.19 ± 2.94 days, P < 0.05). Bitch parity influenced litter size, and the gestation length and birth weight of the puppies were negatively affected by litter size. This study helps elucidate the reproductive potential of this breed and provides reference values for reproductive performance in the Kunming dog.

更新日期：2019-11-01

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南

全部期刊列表>>