TY - JOUR JO - Journal of Animal and Feed Sciences J2 - J. Anim. Feed Sci. SN - 1230-1388 VL - 10 IS - 1 PY - 2001 ID - Niwińska2001 TI - The nutritive value of Polish-grown lupin cultivar seeds for ruminants AB - The chemical composition, amino acid profiles, protein and amino acid ruminal and intestinal digestion and nutritive value of lupin seeds produced from yellow ( Lupinus luteus L.) cv. Popiel, white ( L. albus L.) cv. Bac, Bardo, and narrow-leaved ( L. angustifolium L.) cv. Emir, Mirela, Sur, species were estimated. The seeds contained (per kg of dry matter) 307-442 g crude protein, 0.7-8.05 g of alkaloid, 16.3-20.6 MJ, 1.04-1.42 UFV, 68-85 g PDI, 207-283 g PDIN, 136-146 g PDIE. The seed protein included an average of 0.6-0.8 g/16 g N of methionine and 4.6 of lysine. The coefficients of effective rumen degradability of seed protein ranged from 0.82 (average for yellow and white lupin) to 0.75 (for cv. Sur of narrow-leaved lupin). The rumen degradable protein comprised 61% easily soluble protein and 30-39% slowly degradable protein (7.9% h -1 ). The intestinal digestion coefficient of rumen-undegraded protein averaged 0.94. Methionine and lysine tended to be less digestible in the postruminal part of the alimentary tract than other amino acids. AU - Niwińska, B. SP - 91 EP - 101 DA - 2001 DO - 10.22358/jafs/67944/2001 UR - https://doi.org/10.22358/jafs/67944/2001 ER -