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Ejaculate Traits and Sperm Morphology Depending on Ejaculate Volume in Duroc Boars
Krzysztof Górski1, Stanisław Kondracki1, Anna Wysokińska1
1Department of Bioengineering and Animal Husbandry, Faculty of Natural Sciences, Siedlce University of Natural Sciences and Humanities, 08-110 Siedlce, Poland.
Journal of Veterinary Research
|July 7, 2018
Summary
Ejaculate volume in Duroc boars impacts sperm shape but not morphology or size. Larger volumes yield more insemination doses, despite lower sperm concentration, aiding boar artificial insemination efficiency.
Area of Science:
- Animal Science
- Reproductive Biology
- Veterinary Medicine
Background:
- Semen quality is crucial for artificial insemination (AI) success in swine.
- Understanding ejaculate traits in Duroc boars is vital for optimizing breeding programs.
Purpose of the Study:
- To investigate the relationship between ejaculate volume, sperm morphology, and ejaculate traits in Duroc boars.
- To assess how ejaculate volume influences sperm characteristics and insemination dose yield.
Main Methods:
- Analysis of 121 ejaculates from 12 Duroc boars over 10 months.
- Categorization of ejaculates into three volume groups (≤160 mL, 161-200 mL, ≥201 mL).
- Assessment of physical traits, sperm morphology (major/minor abnormalities), and morphological indices.
Main Results:
- Increased ejaculate volume correlated with more elongated sperm shape, larger heads, and flagella.
- Higher ejaculate volume led to decreased sperm concentration but increased total sperm count and insemination doses.
- Ejaculate volume showed minimal effect on sperm morphological abnormalities and cell size.
Conclusions:
- Ejaculate volume significantly influences sperm cell shape in Duroc boars.
- While ejaculate volume affects sperm morphology, it has limited impact on abnormalities and cell size.
- Optimizing ejaculate volume can enhance the number of insemination doses, improving AI efficiency.
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