ケージ内における破卵発生機構の解明　ＩＩ　　ケージ床構造の相違が卵同志の衝突破卵に及ぼす影響

DOI Web Site
  • 大塚 茂
    農林水産省畜産試験場 農林水産省家畜衛生試験場

書誌事項

タイトル別名
  • Mechanism of incidence of egg breakage in cages. II. The effect of cage floor structure on egg breakage.
  • II. The Effect of Cage Floor Structure on Egg Breakage
  • II. ケージ床構造の相違が卵同志の衝突破卵に及ぼす影響

抄録

In order to investigate the mechanism of incidence of egg breakage in cages, a simu-lation experiment of laying was carried out. Five sound eggs were put at the front of the cage floor and a sound egg was dropped at the rear of the cage floor. Eggs were collided with each other and then the eggs were candled. The interval between parallel wire of the cage flloor tested was 20, 24 and 25mm and the slope of the cage floor was altered. The manner in rolling down of eggs was observed using the cage floor with the interval of 22.7mm between parallel wire at the slope of 8°⋅ Ca and P content in the feed supplied were 3.5% and 0.77%, respectively.<br>The ratio of eggs rolled with the minor axis to eggs rolled with the major axis was 6 to 4. Egg breakage was observed one of the pair of eggs collided which has thinner shell. But when egg rolled with the minor axis egg breakage tended to be observed in rolling egg, and when egg rolled with the major axis egg breakage tended to be observed in egg collided. Incidence of egg breakage tended to increase in the cage with narrower interval between parallel wire and steeper slope of the cage floor. Fifty three eggs in 60 trials were broken in case of using the cage floor of 20mm×7° and seven eggs in 60 trials were broken in case of using the cage floor of 25mm×4°.

収録刊行物

詳細情報 詳細情報について

問題の指摘

ページトップへ