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Hormonal activity in poultry excreta processed for livestock feed



Hormonal activity in poultry excreta processed for livestock feed



Poultry Science 57(1): 265-270



Droppings from caged layers which had been used for growing larvae of house flies had activity equivalent to testosterone 2.18 to 9.36 mu g/g dry droppings, estimated by comb growth. The activity was not affected by drying time or temperature up to 48 h at 100 deg C and was not found in fresh droppings. Unused dried droppings had activity equivalent to oestradiol up to 1.6 mu g/g dry droppings, estimated by growth of rat uterus.

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Accession: 000396882

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DOI: 10.3382/ps.0570265



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