Scatterplot of the delta values of carbon-13 versus nitrogen-15 of the animal meal and vegetable treatments in the yolk of 90-day-old eggs of Japanese quail (Coturnix coturnix japonica) fed experimental diets for 45 days. BM+FM, bovine meat and bone meal plus feather meal; BM+OM+FM, bovine meat and bone meal plus poultry offal meal plus feather meal; BM+OM, bovine meat and bone meal plus poultry offal meal; BM, bovine meat and bone meal; FM, feather meal; OM+FM, poultry offal meal plus feather meal; OM, poultry offal meal; and VEG, strictly vegetal control treatment, with corn (Zea mays) and soybean (Glycine max) meal.

Scatterplot of the delta values of carbon-13 versus nitrogen-15 of the animal meal and vegetable treatments in the yolk of 90-day-old eggs of Japanese quail (Coturnix coturnix japonica) fed experimental diets for 45 days. BM+FM, bovine meat and bone meal plus feather meal; BM+OM+FM, bovine meat and bone meal plus poultry offal meal plus feather meal; BM+OM, bovine meat and bone meal plus poultry offal meal; BM, bovine meat and bone meal; FM, feather meal; OM+FM, poultry offal meal plus feather meal; OM, poultry offal meal; and VEG, strictly vegetal control treatment, with corn (Zea mays) and soybean (Glycine max) meal.

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The objective of this work was to detect the inclusion of animal meal in Japanese quail (Coturnix coturnix japonica) diets, by analyzing eggs and their fractions (albumen and yolk) through the technique of carbon (13C/12C) and nitrogen (15N/14N) stable isotopes. Four hundred and thirty-two Japanese quails, 45-day-old females, were distributed in a...

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... analysis also allowed differentiating (p<0.01) between the vegetable control and the animal meal treatments (Figure 2). The albumen samples showed the best grouping of principal components and the greatest separation between treatments. ...

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