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- Title
不同品种公猪的精液品质及受精能力分析.
- Authors
杨锁州; 王文文; 王丹; 宁超; 王杨; 李倩; 董立才; 公维龙; 李鑫; 唐辉
- Abstract
To analyze the differences in semen quality and fertilization ability of different breeds of boars, various indicators of semen quality and fertilization ability were measured for Yimeng black pigs, Jiangquan black pigs, and Duroc pigs aged 12 to 36 months at a pig farm in Linyi. We used one⁃way ANOVA and multiple comparison methods to compare the differences in various indicators among different breeds. The breed effect was corrected and the correlation coefficients between various indicators were calculated. The results showed no significant difference between Jiangquan black pigs and Yimeng black pigs in terms of ejaculate volume, sperm density, total effective sperm count, and dilution ratio, but both were significantly higher than Duroc. There was no significant difference between Jiangquan black pigs and Duroc regarding sperm motility, but both were significantly higher than Yimeng black pigs. There was no significant difference in the total effective sperm count per unit volume after dilution and fertilization rate among the three breeds of boars. Jiangquan black pigs exhibited heterosis in terms of ejaculate volume, total effective sperm count, and dilution ratio, with a heterosis rate of 3.8%—5.5%. The correlation analysis showed that the total effective sperm count of the raw semen was significantly positively correlated with the dilution ratio (r=0. 99, P<0.01), and the ejaculate volume was significantly positively correlated with the total effective sperm count and dilution ratio of the raw semen (r=0. 92, P<0.01). The ejaculate volume was moderately negatively genetically correlated with sperm density, diluted sperm density, straight⁃line movement sperm count, and total effective sperm count of the raw semen (r=-0.37—-0.21). However, it did not significantly affect the final fertilization rate (r=-0.06). Except the moderate positive correlation between the sperm density of the raw semen and fertilization rate (r=0.28, P<0.01), the pre⁃diluted and post⁃diluted semen quality indicators were weakly correlated with the fertilization rate. In conclusion, semen dilution is beneficial to ensure successful artificial insemination. Jiangquan black pigs exhibit a certain degree of heterosis regarding ejaculate volume and total effective sperm count and are superior to their paternal breed Duroc.
- Subjects
MULTIPLE comparisons (Statistics); SEMEN analysis; SEMEN; SPERM count; SPERM motility; SWINE farms
- Publication
Journal of Henan Agricultural Sciences, 2023, Vol 52, Issue 4, p137
- ISSN
1004-3268
- Publication type
Article
- DOI
10.15933/j.cnki.1004⁃3268.2023.04.016