Effect of vitamin E supplementation on semen quantity and quality of Local Kampong roosters
Malaysian Society of Animal Production
This experiment was conducted to investigate the effect of increasing dietary levels of vitamin E on semen quantity and quality characteristics of local kampong roosters. Forty-five roosters were randomly distributed equally to 3 treatment groups with each group consisting of 5 replicates of 3 roosters per replicate. The 3 treatment groups were no vitamin E (T0), 200 IU vitamin E (T1) and 400 IU vitamin E (T2) supplementations. DL a-tocopherol acetate was used as the source of vitamin E.
... ial broiler feed, crushed corn and water were given ad libitum. Semen quantity and quality were evaluated at week 2, 3 and 4 after the initial vitamin E supplementation. Improvement in semen production characteristics was only noticeable after 4 wk of vitamin E supplementation. Semen characteristics (sperm gross motility score, percentage of live sperm and colour score) at week 4 after supplementation were significantly higher (6.20 ± 1.10, 81.68 ± 5.39% and 2.80 ± 0.30, respectively) in T2 group (P < 0.05) compared to control group. Percentages of abnormal tail spermatozoa were significantly (P < 0.05) lower (3.84 ± 2.55) T2 group compared to control group. From this study, it can be concluded that higher supplementation of dietary vitamin E is beneficial in improving the semen characteristics of local kampong chicken after 4 wk of supplementation.