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The aim of the present study was to examine the influence of raw seeds of grass pea (Lathyrus sativus L.) in feed mixtures for grower-finisher pigs on growth performance, and biochemical and haematological parameters in their blood, as well as on the weight of the liver and the kidney. The experiment was performed on 96 grower-finisher pigs of (Polish Landrace × Polish Large White) × Pietrain, weighing from 25 to ca. 100 kg. The pigs were divided into four diet groups. The feed compound of the control group contained extracted soybean meal. In experimental groups soybean meal protein was replaced by raw grass pea seeds in quantities of 50% in grower and/or finisher diet, and 100% in both fattening period. The use of raw grass pea seeds amounting to 50% of protein feeds in finisher diet did not result in lower growth performance in comparison to the control group. However, the fatteners fed grass pea seeds amounting to 50% of protein feedstuffs in both fattening periods revealed the highest feed and energy intake per kg of live weight gain, compared to the group feed grass pea only in the second phase of the fattening period. A higher share of grass pea seeds in the mixture led to weaker growth performance and carcass characteristics. Hypertrophy of kidney and liver was noted in the animals which were fed with raw seeds of grass pea amounting to 100% of protein feeds. Also, hyperactivity of ALAT, ASAT and alkaline phosphatase was observed in the animals serum. No negative influence of applying raw seeds of grass pea amounting up to 50% of protein feeds in grower and/or finisher periods on the parameters examined was noted.;

agricultural and food science

The influence of raw grass pea (Lathyrus sativus L.) seeds on growth performance and biochemical and haematological parameters in the blood of grower-finisher pigs