Productivity improvement of Fukujidori (the 2nd report)
2019
Takatsuka, M. (Fukui Prefectural Livestock Experiment Station (Japan)) | Kondo, H. | Kubo, N. | Morinaga, F.
In this study, we aim to identify the cause of cannibalism and establish cannibalism preventing method in order to improve productivity of Fukuijidori. We have surveyed poultry farmers in Fukui prefecture on the occurrence of cannibalism, type of the hen house, stocking density, feed nutrient composition, illuminance, presence of roosters, the egg-laying rate and the carcass traits. We have found that the cannibalism occurred in 29.8% of flock (17 in 57 flocks) after providing to farmers and that high incidence of cannibalism in the flocks which were fed with lower crude protein, lower metabolizable energy and the illuminance in the hen house was higher. We have found no correlation with the occurrence of cannibalism and the stocking density. It was uncertain that the relevance of presence of roosters to the occurrence of cannibalism. In 91.7% (11 in 12 flocks) of lots that the cannibalism occurred during its brooding period, the cannibalism continued after introducing to the farmers. It was found that lower egg-laying rate and lower ratio of 2 kg and over carcass weight in the flocks which the cannibalism occurred, this showed the occurrence of cannibalism had a negative effect on the productivity. For the prevention of the cannibalism, it was considered that optimization of feed nutrient composition and reduction of the illuminance of the hen house should be effective.
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