Seasonal variations in reproductive parameters ofOuled Djellal rams in the East of Algeria

Seasonal variations in reproductive parameters ofOuled Djellal rams in the East of Algeria

This experiment was carried out on Ouled Djellal rams in order to study the effect of season on testicular size, serum testosterone level and semen characteristics for a period of one year. Blood samples were obtained via jugular vein, and semen was collected by using an electro-ejaculator from six...

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Veröffentlicht in:Indian journal of animal research 2017-02 (OF)
Hauptverfasser: Belkhiri, Yamina, Bouzebda-Afri, Farida, Bouzebda, Zoubir, Mouffok, Charef Eddine, Djaout, Amal
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container_issue OF
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container_title Indian journal of animal research
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creator Belkhiri, Yamina
Bouzebda-Afri, Farida
Bouzebda, Zoubir
Mouffok, Charef Eddine
Djaout, Amal
description This experiment was carried out on Ouled Djellal rams in order to study the effect of season on testicular size, serum testosterone level and semen characteristics for a period of one year. Blood samples were obtained via jugular vein, and semen was collected by using an electro-ejaculator from six fertile male rams (2-4 years of age) on a monthly basis. In this breed, testis parameters varied seasonally showing the highest average values during autumn. However, the variation of body weight, GSI, serum testosterone levels, mass motility, individual motility and sperm concentration were not significant during the sampling period. The results reported show that the lowest and highest levels of semen volume were recorded in winter (0.62±0.11 ml) and in autumn (1.23±0.09 ml) respectively. The pH value and total number in sperm showed a uniform pattern with low scores during breeding season and high scores in non-breeding season. High percentage of live sperm was recorded during the summer, and high percentage of abnormal sperm was recorded during winter.
doi_str_mv 10.18805/ijar.v0iOF.7266
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title Seasonal variations in reproductive parameters ofOuled Djellal rams in the East of Algeria
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