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Hormonal activity of the adrenal and testis in the post-hatching ontogenesis of cocks and its relationship with some semen characters



Hormonal activity of the adrenal and testis in the post-hatching ontogenesis of cocks and its relationship with some semen characters



Byulleten' Vsesoyuznogo Nauchno Issledovatel' skogo Instituta Razvedeniya i Genetiki Sel' skokhozyaistvennykh Zhivotnykh 55: 26-31



Blood was sampled from each of 20 Leghorn X Australorp males on days 40, 70, 90, 120, 140 and 170 of age, and ejaculates were collected daily for 1 wk between 240 and 270 days of age. Adrenal activity was measured in terms of the blood corticosterone content, and testis activity in terms of blood testosterone. Significant correlations of semen characters with corticosterone and testosterone levels were mostly in the range 0.49-0.72.

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