Composition and protein quality of sweet lupin seed

Abstract

The proportion of seed coats (hulls) of four varieties of sweet lupin seeds ranged from 19 to 25 %. The amount of hull varied inversely with the weight of the seed, within each variety. Lupinus luteus cv Weiko I11 had 40.1 % protein (dry basis); of 3 cultivars of L . angustifolius cv Uniharvest had the highest protein (36.2 %), while cv Uniwhite had the lowest (28.6%). The protein content of dehulled lupins was about 20% higher than that of the whole seeds.L . angustifolius cv Uniwhite and L. luteus cv Weiko I11 were analysed for moisture, protein, lipid, ash, fibre, amino acids, carbohydrates, calcium, phosphorus, zinc, iron, copper and manganese. Whole seed, hulls and kernels were examined. Sulphur amino acids were limiting. The protein efficiency ratios of the two varieties, supplemented with methionine, were 2.40 and 2.56, respectively; these values increased by about 10% when the protein of the dehulled lupin seeds were tested. The requirement for added methionine for maximum p.e.r. was 0.65 g/kg diet. When dehulled lupin seed was steeped in water for a day and boiled and included in the diet of rats, slightly superior growth and p.e.r. resulted.The two varieties of dehulled lupin seeds effectively supplemented the protein of barley meal in the diet of rats, especially when methionine supplements were added, but were less efficient in supplemental value than was casein.

Short communication. Effect of enzyme addition on the nutritive value of six lupin cultivars with different alkaloid content

“…The content of essential amino acids in lupin seed protein was found to be relatively balanced except for methionine which is low relative to the requirements of the growing chicks. The amino acid composition was similar to that reported by Hove (1974), Yule andMcBride (1976), andHill (1977). Among the different minerals, the most significant differences is reported in Mn content.…”

Nutritional Value of Lupine in the Diets for Pigs (a Review)

“…The seeds of sweet lupine species (L. albus, L. angustifolius, L. luteus) contain 28 to 48% (an average of about 33-40%) crude protein in dry matter, which depends on the species and climatic conditions (Hove 1974;Green and Oram 1983;Sousa et al 1996;Linnemann and Dijkstra 2002;Sujak et al 2006). Great differences in the protein content (from 317.1 g/kg cv Boruta to 458.8 g/kg cv Juno in dry matter) were found in the most frequently cultivated lupine species in Europe by Straková et al (2006).…”

Effects of lupin seed supplementation on egg production performance, and qualitative egg traits in laying hens

“…Due to its high protein and food energy content, soybean meal is a potentially suitable plant protein meal in poultry diets (Hove 1974;Watkins and Mirosh 1987;Nalle et al 2011). However, due to the increasing price of soybean meal, many researchers have sought alternative plant protein sources.…”