Published in Scientific Works. Series C. Veterinary Medicine, Vol. LXIX, Issue 1
Written by Diana ȘIPOTEANU, Mădălina CIOARIC, Ivona ZĂBAVĂ, Maria Rodica GURĂU, Nicolae DOJANĂ
The paper presents the effects of long-term dietary supplementation with vitamin A (600 IU or 180 µg/kg diet), vitamin E (600 IU or 270 mg)/kg diet) or vitamin A+E (same values) on some biological traits of sperm in Cornish hybrid roosters from 40 to 57 weeks of age versus control. Ejaculate volume, sperm density, and motility were analyzed weekly from 47 to 57 weeks of age of the roosters. The analyzed traits decreased from week to week reaching the levels of the control two or three weeks later than control, showing an effect of improving of the analyzed properties of the sperm and prolonging the reproductive capacity of the roosters at least up to the age of 57 weeks of the roosters. These effects were recorded for both A and E investigated vitamins. Vitamin A better (significantly) improved ejaculate volume and sperm density, while vitamin E predominantly improved sperm motility. The association of the two vitamins in dietary supplements did not lead to potentiating, or mutual inhibition phenomena of the biological traits of sperm in any aged roosters.
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