VARIATION IN WEIGHT OF SOME INTERNAL ORGANS OF THE DOMESTIC FOWL (GALLUS GALLUS)

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Abstract
One hundred apparently normal yearling single-comb White Leghorn hens were subjected to post mortem examination, including weighing of the liver, kidneys and spleen. The average weight of these organs (excluding two individuals possessing only one kidney) constituted 1.89, 0.64 and 0.12% of the average total live weight. Single organs, particularly the spleen, were relatively more variable than total body weight.The weight of the organs from individuals of similar total live weight varied markedly, but, on the whole, the larger birds had somewhat larger organs. As the size of bird increased, however, the average percentage of the total weight due to liver, kidneys or spleen decreased.There was a moderate but significant correlation (r = + 0.41) between the weights of liver and kidneys from birds of a specified total weight, but no evidence of association between weight of kidneys and spleen weight.

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