The effects of illumination method and the amount of protein intake on fertility of male gamefowl during summer
1999
Ueda, S. (Fukuoka-ken. Agricultural Research Center, Chikushino (Japan)) | Nishio, Y. | Fukuhara, E. | Murakami, T. | Tsurusaki, M.
The present study is designed to investigate the effects of the illumination method and the amount of protein intake on semen production of gamefowls during summer and to improve their fertility rate. Semen was collected once a week from gamefowls which were hatched in September, January and May. The semen production of gamefowl hatched in May were better than others hatched in January or September. When gamefowls were played on diet of 28g protein/day/bird and the illumination time were increased gradually by 15 min., sperm volume, sperm numbe and fertility rate after insemination were not decreased
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