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Effects of Dietary Fish Oil on Semen Quality of Goats
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 Title & Authors
Effects of Dietary Fish Oil on Semen Quality of Goats
Dolatpanah, M.B.; Towhidi, A.; Farshad, A.; Rashidi, A.; Rezayazdi, A.;
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The aim of the study was to investigate the effect of dietary fish oil supplementation on the semen characteristics of the Markhoz buck. Sixteen bucks were randomly allocated into 4 groups and received four different diets: unsupplemented control diet, supplemented with fish oil at 2.50% dry matter (DM), supplemented with fish oil (2.50% DM) and vitamin E (0.30 g/kg DM), and supplemented with vitamin E (0.30 g/kg DM). All experimental diets were formulated according to AFRC (1998). Semen was collected at 14 d intervals from June 17, 2006 to September 2, 2006. Semen characteristics were evaluated. Significant effects (p<0.05) of the week (sampling time) were observed for all parameters except semen volume. Also a significant effect (p<0.05) of dietary treatment was observed for all parameters except for percent sperm with normal morphologies and semen volume. Fish oil supplementation with excess vitamin E had a significant effect (p<0.05) on total number and sperm density, motility and progressive motility, percentage viability and dead sperm. The interaction between fish oil feeding and sampling time was significant (p<0.05) for all of the parameters. The bucks that received fish oil in association with vitamin E, effect fish oil showed the greatest improvement in semen characteristics compared with the other groups (p<0.05). This study showed that fish oil supplementation with vitamin E may have a beneficial effect on the semen quality and fertility of Markhoz bucks.
Goat;Semen;Nutrition;Fish Oil;
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