Broiler chickens reared from 3 to 8 weeks of age were fed per os on extract or, differing in chemical composition fractions of the extract (A 0 -A 6 ) from bitter lupin (L. angustifolius var. Mirela) seeds (Experiment 1), the extract and its selected fractions (A,, A 3 , A 5 ) from the seeds of Mirela as well as extract from sweet lupin var. Emir (Experiment 2). The extracts from bitter lupin harvested in two consecutive years, used in the experiments, differed in alkaloid content. The extracts and fractions did not negatively affect growth, feed intake or health of the chickens. Only fraction A 5 (alkaloid hydrochlorides) used in Experiment 2, which was from extract with higher alkaloid content, reduced (P<0.01 ) body weight gain of the chickens.The T 3 level in the peripheral blood serum was the lowest in the birds receiving fractions containing sugars (A 3 ) and the highest in the group receiving alkaloid hydrochlorides (A 5 ). The T 4 level was the highest in the chickens receiving extract from sweet lupin. The extracts and fractions had no effect on the red blood cell count while leukograms showed only undirected variation, except for basophil and eosinophil in blood of which level was higher in experimental than control birds.

The experiment was with 117 broiler chickens divided into five groups: control (soyabean oilmeal as protein feed) and four experimental fed on varied rations of triticale, rapeseed oilmeal and ground rape seed. The chickens were slaughtered at the age of 8 weeks. The carcasses were processed and stored for six months at -18°C. Sensory examination was carried out on boiled breast and leg muscles.Diets containing 50% triticale and up to 18% rapeseed oilmeal or 12% of rape seeds did not negatively affect either palatability or flavour of breast meat and boullions. The flavour of leg muscles was affected negatively when chickens were fed on a 50% triticale and 12% rape seeds diet.

, p-ta świątniiki n. Wartą. ** Praca wykonana w ramach tematu ZP-2/82, COBRD. * Obliczono w stosunku do liczby badanych zarodków (w trzech nakładach jaj), u których stwierdzono występowanie jednej lub kilku zmian anatomopatologicznych jednocześnie ..

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