Comparison of gamma–Irradiation and enzyme supplementation to eliminate antinutritional factors in rice bran in broiler chicken diets

Fifty-four samples of wheat, representing duplicate samples of nine varieties grown in three environments, were included in chick bioassays using rapidly growing broilers, complete diets, and enzyme supplementation to remove the deleterious effects of non-starch polysaccharides. An insoluble ash marker was included in the diets, which allowed calculation of apparent digestibilities of CP and AA in the grain from analysis of the ileal contents obtained after sacrifice of the chicks at 17 d of age. The wheat cultivars contained from 13.5 to 16.8% CP and differed in the percentage of specific AA, with Pro, Glu and Phe making up proportionately larger parts of high CP samples than low CP samples. Without enzyme supplementation, the digestibility of CP varied from 83 to 88% and that of specific AA from 76 to 94%, determined in part by the class and variety of wheat. Xylanase enzyme supplementation improved the digestibility of protein by an average of 4%, and reduced the differences in digestibility between wheat samples. These results suggest that variation between wheat samples should be taken into consideration when formulating broiler feed, especially when formulation is for specific AA. Enzyme supplementation may provide a partial alternative to using high-quality protein sources or supplementing with synthetic AA. Key words: Broiler chicken, digestible amino acids, digestible protein, wheat, enzyme

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Effect of gamma irradiation on physicochemical properties, proximate composition, vitamins and antinutritional factors of the tribal pulse Vigna unguiculata subsp. unguiculata

International Journal of Food Science & Technology ◽

10.1111/j.1365-2621.2011.02678.x ◽

2011 ◽

Vol 46 (8) ◽

pp. 1739-1746 ◽

Cited By ~ 10

Author(s):

Pious Soris Tresina ◽

Veerabahu R. Mohan

Keyword(s):

Physicochemical Properties ◽

Gamma Irradiation ◽

Vigna Unguiculata ◽

Proximate Composition ◽

Antinutritional Factors ◽

Tribal Pulse

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Antinutritional factors, ruminal degradation and in vitro protein digestibility of gamma irradiated full-fat soybean

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200030234 ◽

2009 ◽

Vol 2009 ◽

pp. 184-184

Author(s):

M Taghinejad Roudbaneh ◽

A Nikkhah ◽

A A Sadeghi ◽

G Raisali ◽

M Chamani

Keyword(s):

Gamma Irradiation ◽

Dairy Cows ◽

Nutritional Value ◽

Protein Digestibility ◽

High Energy ◽

Antinutritional Factors ◽

Γ Irradiation ◽

Rumen Microbes ◽

Gamma Irradiated

Whole soybean is used as a high energy-protein supplement for dairy cows, but contains various antinutritional factors and the protein is highly degradable by rumen microbes. Roasting and extrusion are very popular ways of feeding soybeans to dairy cows but these processing methods may adversely affect the protein digestibility and lysine availability of the ﬁnal product in the small intestine. Gamma irradiation has been recognized as a reliable and safe method for improving the nutritional value and inactivation or removal of certain antinutritional factors in foods and feeds (Siddhuraju et al., 2002). As far as we know, information about the effects of γ-irradiation on ruminal crude protein (CP) degradation of full-fat soybean in the literature is scarce. The aim of this study was to evaluate the effects of gamma irradiation (γ-irradiation) on nutritional value and antinutritional factors of soybean (SB) for ruminants.

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