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A influência da idade da égua, idade do garanhão e mês de inseminação no sucesso reprodutivo
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Abstract(s)
Com o objetivo de averiguar os efeitos da idade da égua, da idade do garanhão e do mês
da inseminação sobre o sucesso reprodutivo, recolheram-se dados relativos a
inseminações com sémen do garanhão Coltaire Z, propriedade da Coudelaria Sobreiro
Velho, com gestação confirmada, ao longo de 8 épocas reprodutivas consecutivas, entre
2008 e 2015. Nas inseminações utilizou-se sémen fresco diluído, e foi usada apenas uma
dose em cada período estral. Recolheram-se registos relativos a 181 éguas de idades
compreendidas entre os 3 e os 24 anos de idade, incluindo o mês da primeira
inseminação e o número de inseminações realizadas até se obter a confirmação da
gestação, totalizando 259 observações. Verificou-se que a idade do garanhão e o mês
de inseminação influenciam significativamente o sucesso da inseminação artificial
(p=0,042 e 0,038, respetivamente). O número de inseminações por gestação confirmada
foi significativamente mais elevado nas 4 últimas épocas reprodutivas (em que o garanhão
tinha entre 15 e 19 anos de idade). O número médio de inseminações por gestação
confirmada mais baixo observou-se quando a primeira inseminação teve lugar no mês
de junho. Não se verificou que a idade da égua tenha significância estatística no sucesso
reprodutivo.
In order to investigate the effects of the age of the mare, the age of the stallion and the month of insemination on reproductive success, data were collected on inseminations with semen from the stallion Coltaire Z, owned by Coudelaria Sobreiro Velho, with confirmed pregnancy, over 8 consecutive breeding seasons, between 2008 and 2015. In the inseminations, fresh diluted semen was used, and only one dose was used in each estrous period. Records were collected for 181 mares aged between 3 and 24 years old, including the month of the first insemination and the number of inseminations performed until pregnancy was confirmed, totaling 259 observations. It was found that the age of the stallion and the month of insemination significantly influence the success of artificial insemination (p=0.042 and 0.038, respectively). The number of inseminations per confirmed pregnancy was significantly higher in the last 4 breeding seasons (when the stallion was between 15 and 19 years old). The lowest average number of inseminations per confirmed pregnancy was observed when the first insemination took place in June. It was not verified that the age of the mare has statistical significance in the reproductive success.
In order to investigate the effects of the age of the mare, the age of the stallion and the month of insemination on reproductive success, data were collected on inseminations with semen from the stallion Coltaire Z, owned by Coudelaria Sobreiro Velho, with confirmed pregnancy, over 8 consecutive breeding seasons, between 2008 and 2015. In the inseminations, fresh diluted semen was used, and only one dose was used in each estrous period. Records were collected for 181 mares aged between 3 and 24 years old, including the month of the first insemination and the number of inseminations performed until pregnancy was confirmed, totaling 259 observations. It was found that the age of the stallion and the month of insemination significantly influence the success of artificial insemination (p=0.042 and 0.038, respectively). The number of inseminations per confirmed pregnancy was significantly higher in the last 4 breeding seasons (when the stallion was between 15 and 19 years old). The lowest average number of inseminations per confirmed pregnancy was observed when the first insemination took place in June. It was not verified that the age of the mare has statistical significance in the reproductive success.
Description
Keywords
equinos inseminação artificia idade da égua idade do garanhão inseminação artificial insemination equine mare stallion
Pedagogical Context
Citation
Batista, H.J.R.(2022). A influência da idade da égua, idade do garanhão e mês de inseminação no sucesso reprodutivo. Escola Superior Agrária de Elvas. Elvas
Publisher
Escola Superior Agrária de Elvas