アルファルファサポニン給与によるニワトリヒナの発育阻害

書誌事項

タイトル別名
  • Growth-Depressing Effect of Alfalfa Saponin in Chicks
  • Growth-Depressing Effect of Alfalfa Sap

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説明

Effects of alfalfa saponin with or without cholesterol on chick growth performance, feed palatability and passage time of ingesta were investigated. The addition of 1% alfalfa saponin to the basal diet containing casein (CP 20%) decreased feed intake and body weight gain. These adverse effects were overcome by adding 1% cholesterol simultaneously with saponin. Dietary saponin was effective in lowering the elevated cholesterol and triglyceride concentrations in the serum caused by the addition of cholesterol. To avoid the effect of taste sensation, saponin was capsuled and introduced directly into the proventriculus. The administration of 0.5g alfalfa saponin depressed feed and water intake during 24h as compared to untreated chicks. These deleterious effects were alleviated by the addition of cholesterol, irrespective of whether cholesterol was included in capsules (0.5g) or in the diet (1%). Chicks were tube-fed diets containing chromic oxide, and the passage time of ingesta was compared for 24h. Adding 1% saponin to the basal diet decreased chromic oxide excretion by approximately half. Reflecting this, the crop in saponin-fed chicks was expanded with ingesta. Besides, feed intake was still suppressed when these chicks were given free access to the basal diet. These abnormalities were completely recovered by the simultaneous addition of cholesterol with saponin. These results suggest that the adverse effect of alfalfa saponin and its alleviation by cholesterol are related to the passage time of ingesta, and not to the feed palatability.

収録刊行物

  • 日本畜産学会報

    日本畜産学会報 67 (9), 772-779, 1996

    公益社団法人 日本畜産学会

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