Antithyroid activity of orally administered goitrin was assessed by parallel-line assay in chicks using four indices. The relative potency of goitrin in chicks was estimated to be approximately 0.31 times the potency of PTU in causing enlargement of thyroid gland, 0.06 times in effect on depression
Diets containing 500 g high-glucosinolate rapeseed meal/kg or an equivalent amount of soybean meal as the only protein supplement were fed to layer-type chickens and two broiler strains from 1 to 56 d of age. Additional groups of the former were maintained on the diets until they were 16 and 28 d
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