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ORIGINAL ARTICLE
Year : 2021  |  Volume : 10  |  Issue : 2  |  Page : 82-89

Semen characteristics of the three genetic types of boars reared in Benin


1 Department of Animal Production and Health, Laboratory of Animal Biotechnology and Meat Technology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, 01 BP 2009, Cotonou, Benin
2 Department of Animal Production, Faculty of Agronomic Science, University of Abomey-Calavi, 01 BP 526, Cotonou, Benin
3 Research Unit “Vector-Borne Diseases and Biodiversity” (UMaVeB), Centre International de Recherche-Développement sur l’Elevage en zone Subhumide (CIRDES), Burkina Faso
4 Fundamental and Applied Research for Animals and Health, Faculty of Veterinary Medicine, University of Liège, Vallée 2, Avenue de Cureghem, 4000 Liège, Belgium
5 Laboratory of Experimental Surgery, Universite Catholique de Louvain, 55/70, Avenue Hippocrate, 1200, Brussels, Belgium
6 Provincial Center of Productions Animales, Liège (CPL Animal), Rue de Saint Remy, 5 B4601 Argenteau, Belgium

Correspondence Address:
Ignace O Dotche
Department of Animal Production and Health, Laboratory of Animal Biotechnology and Meat Technology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, 01 BP 2009, Cotonou
Benin
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2305-0500.311616

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Objective: To characterize the semen of three genetic types of boars (local, improved and Large White) reared in Benin. Methods: Semen of local, improved and Large White boars reared in Benin were collected using the gloved hand method and analyzed to determine volume, pH, concentration, mobility, motility, and morphology. The effect of the genetic type of boar on semen characteristics was aslo studied. Results: Duration of ejaculation and semen volume of Large White boar were significantly higher than those of local and improved boars (P<0.05). The semen of improved boars had a higher motility score than that of Large White and local boars (P<0.001). The semen of local boars was more concentrated in the spermatozoa than that of improved and Large White boars (P<0.05). The proportion of spermatozoa of improved boars with normal morphology (93.6%) was significantly higher than that of local (82.2%) and Large White boars (81.6%) (P<0.001). The proportion of spermatozoa with folded tails in the semen of Large White boars (9.2%) was significantly higher than that observed in improved (1.8%) and local (5.0%) boars (P<0.001). The proportion of spermatozoa with proximal cytoplasmic droplets in semen of improved boars (2.7%) was significantly lower than that in Large White (6.8%) and local (9.7%) boars (P<0.001). The local (1.5%) and Large White boars (1.1%) showed more spermatozoa with distal cytoplasmic droplets in their semen compared to the improved boars (0.4%). Conclusions: The semen characteristics of pigs reared in Benin vary from one genetic type to another. Each genetic type has a strong point. The Large White boar produces larger semen, the local boar produces more concentrated semen and the improved boar produces spermatozoa that are morphologically better. The semen of these three genetic types can be used in artificial insemination but the improved boar’s semen is more recommended.


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