産卵鶏の生理的性状におよぼす高温環境の影響

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タイトル別名
  • Effect of High Environmental Temperature on Physiological Characteristcs of Laying Hens
  • サンランケイ ノ セイリテキ セイジョウ ニ オヨボス コウオン カンキョウ ノ エイキョウ

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説明

Thirty Single-Comb White Leghorn hens were used to study the effect of high environmental temperature on blood sugar level, body temperature, respiration rates and egg production.<br>The single-cages were situated in a thermo-controlled room where the high environmental temperature for hens was adjusted to 30°C for 80min. (Exp. 1) and for 20 days (Exp. 2), respectively.<br>Significant increase was observed in blood sugar concentration, body temperature and respiration rates shortly after the environmental temperature had been raised from 20°C to 30°C.<br>The effect lasted longer in the blood sugar concentration which was significantly high until fifth day at 30°C. The treatment in the Exp. 2 caused fall in egg production, and decrease in egg weight and egg shell thickness.

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