Effects of Nitrofurans on the Growth of Quails (Coturnix coturnix japonica.)

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Abstract
Objective of this experiment is to clarify the effects of nitrofurans on the growth of quails (Coturnix coturnix japonica). Three kinds of nitrofurans, furazolidone (FZD), nitrofurazone (NFZ), and nihydrazone (NHZ) were added to a basal corn-soybean type ration at rate of each 30g per 1, 000 kg of the ration. Crude protein content of the ration was 19.8% in the ration I, 21.6% in the ration II, and 26.5% in the ration III. The former two rations were considered the low plane of protein contents for the growth of quails. From results of experiments I, II, and III, it might be appeared that FZD had a growth-stimulating effect on quails, which were fed with low protein diet. On the other hand, neither NFZ nor NHZ had influences on the growth of quails. However, NFZ was most effective to decrease mortality due to some possibly bacterial disease, characterized of diarrhea, during the period of growth. In experiments I and II, quails fed with low protein diet, either ration I or ration II, failed to renewal of feathers on the back. NHZ added to the ration II completely prevented the occurence of bare backs in experiment II. Growth stimulating effect of FZD is discussed, especially from the view of protein sparing action.

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