Effect of seasonal factors on the ejaculate properties of crossbred Duroc x Pietrain and Pietrain x Duroc boars as well as purebred Duroc and Pietrain boars

• Autorzy: Wysokinska A. , Kondracki S. , Kowalewski D. , Adamiak A. , Muczynska E.
• Języki publikacji: EN

Abstrakty

EN

The experimental material consisted of 12,285 ejaculates obtained from 93 boars, including 18 Duroc boars, 30 Pietrain boars, 24 ♀Duroc x ♂Pietrain crossbreds and 21 ♀Pietrain x ♂Duroc crossbreds. The boars were utilised for at least 6 months and qualified for insemination from January 1, 1992 to December 31, 2007. Each ejaculate was assessed using standard methods for the following physical traits: volume, sperm concentration, spermatozoon motility, total number of spermatozoa, and number of insemination doses per ejaculate. The data obtained were classified into 12 sub-groups consisting of ejaculates collected in successive months. Ejaculates collected in the summer months had less spermatozoa than in the autumn and winter period. Ejaculates collected in the summer (mainly in July) yielded the least amount of insemination doses. Ejaculates of both types of crossbreds were characterised by greater spermatozoon motility compared with purebred boars, irrespective of the month of ejaculate collection.

• Wydawca: -
• Czasopismo: Bulletin of the Veterinary Institute in Puławy
• Rocznik: 2009
• Tom: 53
• Numer: 4
• Opis fizyczny: p.677-685,fig.,ref.

Twórcy

autor

Wysokinska A.

• Department of Animal Reproduction and Hygiene, University of Podlasie, 08-110 Siedlce, Poland

autor

Kondracki S.

• Department of Animal Reproduction and Hygiene, University of Podlasie, 08-110 Siedlce, Poland

autor

Kowalewski D.

• Department of Animal Reproduction and Hygiene, University of Podlasie, 08-110 Siedlce, Poland

autor

Adamiak A.

• Department of Animal Reproduction and Hygiene, University of Podlasie, 08-110 Siedlce, Poland

autor

Muczynska E.

• Department of Animal Reproduction and Hygiene, University of Podlasie, 08-110 Siedlce, Poland

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