fertility in the stallion as accessed by the spermatozoa morphology fertilidade no garanhão avaliada através da morfologia espermática

Clicks: 285
ID: 165836
1997
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Abstract
In a breeding farm, 129 mares were bred to 4 stallions and had an overall pregnancy rate of 76.7%. Stailions were submitted to semen examination for at least two times at the beginning of the breeding season and the percentage of morphologically normal spermatozoa were used for statistical analysis in relation to the percentage of pregnancy at the end of the breeding season. A regression analysis revealed that the percentage of pregnancy (y) can be estimated by the percentage of normal spermatozoa (x) in the ejaculate according to the following equation: y=52.38+0.44x; r2=97.8%; P<0.01. We concluded that the pregnancy rate can be estimated by the percentage of morphologically normal spermatozoa in the ejaculate of stallions, since it is an importam characteristic of the semen quality that is strongly associated with fertility, in conditions of uniform management procedures for mares and stallions.
Em um haras, 129 éguas foram cobertas por 4 garanhões, apresentando uma percentagem de prenhez média de 76,7%. Os garanhões foram submetidos a exame de sêmen duas vezes durante a temporada de monta e a percentagem de espermatozóides morfologicamente normais foi utilizada para análises estatísticas em relação a percentagem de prenhez, ao final da estação reprodutiva. Uma análise de regressão revelou que a percentagem de prenhez (y) pode ser estimada pela percentagem de espermatozóides morfologicamente normais (x) no ejaculado, conforme a seguinte equação: y=52,38+0,44x; r2=97,8%; P<0,01. Conclui-se que a percentagem de prenhez pode ser estimada com base na percentagem de espermatozóides morfologicamente normais no ejaculado de garanhões, uma vez que se trata de uma importante característica da qualidade do sêmen e que está fortemente associada a fertilidade, sempre que as condições de manejo forem uniformes para garanhões e éguas.
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pimentel1997cinciafertility Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Cláudio Alves Pimentel;Anelise Maria Hammes;Giovani Dietrich
Journal Trials
Year 1997
DOI
10.1590/S0103-84781997000400025
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781997000400025
Keywords
spermatozoa semen fertility

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