| 刊名 | Agricultural Biotechnology |
| 作者 | Min YAO1, Qingmeng LONG1, Ping LI1, Qixin YANG2, Bing TIAN1, Jinrong SHEN1, Mingzong TANG1, Fei GONG1, Jin ZENG1, Junwei ZHANG1, Yunsong1 ZHANG1, Qingfu ZHAO3 |
| 作者单位 | 1. Guizhou Testing Center for Livestock and Poultry Germplasm, Guiyang 550018, China; 2. Guizhou Province Management Station of Livestock Genetic Resources, Guiyang 550001, China; 3. Guizhou Wucui Mingxiang Agricultural Development Co., Ltd., Bijie 553300, China |
| DOI | DOI:10.19759/j.cnki.2164-4993.2024.06.006 |
| 年份 | 2024 |
| 刊期 | 6 |
| 页码 | 17-21 |
| 关键词 | Pig frozen semen; Sperm motility; Number of progressively motile sperm(NPMS); Abnormal sperm percentage(ABSP); Conception rate |
| 摘要 | [Objectives] Straw-preserved frozen semen from native and imported pig breeds and its conception performance were studied to provide a scientific basis for further optimizing pig breeding strategy. [Methods] This study was conducted to systematically evaluate straw-preserved frozen semen produced by the Guizhou Testing Center for Livestock and Poultry Germplasm from 2018 to 2023. We analyzed 206 samples from native Guizhou pig breeds, including Kele, Zongdi Hua, and Nuogu pigs, as well as 363 samples from imported and bred pig breeds, such as Duroc, Large Yorkshire, Landrace, Topigs, and French Yorkshire, among others. Additionally, we assessed the conception performance of more than 300 heads across 10 batches, comprising both native and imported and bred pig breeds, following deep insemination. [Results] Significant differences were identified in sperm motility and abnormal sperm percentage (ABSP) among native breeds (P<0.05), as well as in number of progressively motile sperm (NPMS) and ABSP among imported and bred breeds (P<0.05). The average semen dose for both native and imported/bred pigs was 0.47 ml, with a standard deviation of 0.01 ml. Sperm motility ranged from 41.5 % to 58 % in native breeds and 50.4 % to 61.7 % in imported and bred breeds. The NPMS ranged from 144 to 177 million in native breeds and 149 to 177 million in imported and bred breeds. ABSPs remained within acceptable limits, ranging from 6.6 % to 16.8 % for native breeds and 6.1 % to 18.1 % for imported and bred breeds. The imported and bred pigs outperformed the native breeds in terms of sperm motility (50.42 % to 69.58 % vs. 41.63 % to 48.37 %), farrowing rate (71.13 % to 86.70 % vs. 57.15 % to 74.35 %), and litter size (7.74 to 10.30 vs. 6.39 to 7.45). [Conclusions] These findings suggest that long-term selective breeding and domestication of native Guizhou pigs are necessary to enhance their reproductive performance. |
