Abstract

ARAUJO, A.M.S.  and  ARAUJO, S.A.C.. More common sperm phatologies in brazilian pony stallions. Arch. zootec. [online]. 2011, vol.60, n.229, pp.145-148. ISSN 1885-4494.  https://dx.doi.org/10.4321/S0004-05922011000100018.

During the domestication, the man turned gradually the reproductive processes of animals, from free grazing and seasonal mating system in intensive production with the reproductive system covering the entire year. Consequently, the reproductive efficiency of domestic animals declined due to environmental factors and the demands of economic production. These factors can result in partial or complete reproductive failure. The diagnosis, control and cure of reproductive disorders are essential for the modern domestic animals industry. The objective of this work was to identify and measure the most common sperm pathologies of Brazilian Pony stallions. The study was conducted in 3 private properties in the city of Campos dos Goytacazes, Rio de Janeiro, Brazil. Fifteen Brazilian Pony stallions, in reproductive age, and active in reproductive programs, were selected. The epididimary reserves were depleted before the experimental phase. Semen samples of each stud were obtained every two weeks using an artificial vagina Botucatu model and totaling 10 collections. Microscopic analysis for the assessment of sperm pathologies were performed at Laboratory of Reprodução e Melhoramento Genético Animal de Monogástricos of UENF. The total number of defects found in animals of this experiment was 37.12% where, major defect reached 28.94% and minor defects 8.28%. Most animals of this experiment showed an average pathology compatible with the reproduction of equine species, but sperm pathologies were above the recommended by the CBRA for marketing.

Keywords : Defect; Horse; Morphology; Semen.

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