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  • Title: Effect of docosahexaenoic acid and alpha-tocopherol enrichment in chicken sperm on semen quality, sperm lipid composition and susceptibility to peroxidation.
    Author: Cerolini S, Zaniboni L, Maldjian A, Gliozzi T.
    Journal: Theriogenology; 2006 Sep 01; 66(4):877-86. PubMed ID: 16530814.
    Abstract:
    The aim of the present experiment was to study the effect of fish oil and Vitamin E rich diets on semen production, sperm functions and composition in broiler breeders. The following parameters were measured: semen volume and concentration, sperm motility and viability, sperm susceptibility to induced peroxidation, sperm lipid and alpha-tocopherol contents. Dietary n-3 PUFA were successfully transferred into spermatozoan phospholipid by fish oil feeding according to the following main features: (a) the C22:6n-3 and C22:5n - 3 contents were increased, but C22:4n-6 remained the peculiar and major polyunsaturate; (b) the content and proportion of total PUFA did not change; (c) the proportional increase of n-3 PUFA was compensated by the decrease of n-6 PUFA, an increase in the proportion of n-9 fatty acids was also found. The sperm content of alpha-tocopherol was doubled increasing the dietary availability of the vitamin to 300 mg/kg of feed. The specific n-3 PUFA and Vitamin E enrichment of chicken sperm affected cell functions. Significant interactions between the two treatments were also found for some parameters. The best sperm quality condition in control sperm (rich mainly in n-6 PUFA) was found supplying 200mg Vitamin E/kg of feed to the male breeders, and in contrast in n-3 rich sperm supplying 300 mg Vitamin E/kg.
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