Chemical composition and nutritive value of yellow-seeded Brassica napus canola
Plant selection programs directed towards the development of yellow-seeded canola are justified as a means to improve meal quality without compromising oil content in the seed. The objective of this study was to compare a new yellow-seeded B. napus line YN01-429 with its black-seeded counterpart B. napus line N89-53, both types produced under identical growing conditions in two consecutive yeas (2003-2004). On average, in comparison to black-seeded, yellow-seeded type contained more oil (46.4 vs 43.1％ DM) and less dietary fibre (14.4 vs 18.5％). When expressed on fat free basis, higher amounts of protein (48.6 va 47.9％),and lower amounts of sucrose (7.5 vs 8.1％), oligosaccharides (2.1 vs 3.6％), starch (2.3 vs 2.8％), total phosphorous (1.14 vs 1.25％), non-phytate phosphorous (0.83 vs 0.93％), and glucosinolates (20.8 vs 27.4 μmol/g) were observed in yellow-seeded canola. Although slightly higher in the content of non-starch polysaccharides (17.5 vs 16.7％), the total dietary fibre averaged 26.4％ for yellow- and 32.1％ for black-seeded samples. Lower fibre content in yellow-seeded canola was reflected in lower content of lignin with associated polyphenols (4.7 vs 9.8％). When expressed in g/16g N, no major difference in essential amino acid contents was observed. In a two-week feeding trial, broiler chickens were fed corn (50％)/soybean meal (30％) diets containing 15％ of ground seed from yellow- or black-seeded canola. The diets were formulated to contain 21％ crude protein and 3050 kcal/kg available energy and were fed without or with exogenous enzyme supplementation. On average, chickens fed diets containing yellow seeds showed body weight gain (g/bird/14 days) and feed efficiency (g feed/g weight gain) values of 280.5 and 1.37 which were identical to those of 283.4 and 1.37 for the diets containing black seeds. Regardless of the seed coat color, weight gain and feed efficiency averaged 278.8 and 285.0, and 1.39 and 134 for the control and the enzyme supplemented diets, respectively.
Yellow-seeded canola Brassica napus chemical composition nutritive value broiler chickens enzyme supplementation
Bogdan A.Slominski Xiangfeng Meng Wei Jia Martin Nyachoti Owen Jones Gerhard Rakow
Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada R3T 2N2 Canadian Bio-Systems Inc., Calgary, Alta, Canada T2C 0J7 Agriculture and Agri-Food Canada, Saskatoon, SC Canada S7N 0X2
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
1839-1841
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）