Autolysis of .alpha.-galactosides of defatted soy flakes: influence on nutritive value for chickens

Angel, R.; Sell, J. L.; Zimmerman, Dean R.

doi:10.1021/jf00081a034

Cited by 9 publications

(2 citation statements)

References 7 publications

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“…Also, the variations in food intake might contribute to the differences observed in AME by altering the relative contribution of exogenous material to the total digesta (Kadim and Moughan, 1997). However, it was noted the poor energy utilization from SBM (toasteddefatted soy flakes) by poultry is not related exclusively to the presence of the oligosaccharides, raffinose and stachyose (Angel et al, 1988).…”

Section: Discussionmentioning

confidence: 99%

Effects of α-Galactosidase Supplementation on Performance and Energy Metabolism for Broilers Fed Corn-non-dehulled Soybean Meal Diets

Zhang¹,

Cao²,

Chen³

et al. 2010

Asian Australas. J. Anim. Sci

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To study the effects of α-galactosidase (α-Gal) supplementation on performance and energy metabolism, 216 Arbor Acres male broilers were placed in 36 cages of 6 birds each and allotted to 4 diets for 42 d, with 0-21 d as starter period and 22-42 d as grower period. The 4 diets were based on corn non-dehulled soybean meal in a 2×2 factorial arrangement, with 2 levels of α-Gal (0 vs. 60 U/kg feed) and 2 levels of ME (normal metabolizable energy (NME) and low metabolizable energy (LME)). Bird performance was obtained at 21 and 42 d of age with samples of feces collected for nutrient digestibility from 19-21 d and 40-42 d. At 21 and 42 d, 1 bird from 6 cages of each treatment was killed to determine liver weight, intestinal pH and chyme viscosity. With the addition of α-Gal the 42 d body weight (BW) and 0-42 d average daily gain (ADG) were significantly improved (p<0.05). Average daily feed intake (ADFI) of birds fed the LME diet was significantly increased compared to those fed the NME diet during starter (p<0.01) and grower (p<0.05) periods and overall (p<0.01). There was an interaction of α-Gal×ME on 0-21 d ADFI (p<0.01). Supplementation of α-Gal significantly improved (p<0.01) feed efficiency during the grower period and overall. Feed efficiency of birds fed the LME diet was significantly decreased (p<0.05) compared to those fed the NME diet during the starter period and overall. With the addition of α-Gal apparent metabolizable energy (AME) was improved (p<0.01) by 2.1% and 1.8% during starter and grower periods, respectively. There was a main effect (p<0.05) of α-Gal on the digestion of neutral detergent fiber (NDF) during the starter period and crude protein (CP), NDF and acid detergent fiber (ADF) during the grower period. With the addition of α-Gal, the relative weight of liver was reduced (p<0.01) during the two phases. The duodenal and jejunal pH were significantly decreased (p<0.01) with the supplementation of α-Gal at the two phases. α-Gal addition reduced (p<0.01) chyme viscosity of the ileum during the starter and grower periods. Overall, α-Gal showed a major effect on nutrient efficiency, improved ADG and feed efficiency, whereas LME decreased feed efficiency. The incorporation of α-Gal into a LME diet could at least partially offset ME deficiency of non-dehulled soybean meal.

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Section: Discussionmentioning

confidence: 99%

Effects of α-Galactosidase Supplementation on Performance and Energy Metabolism for Broilers Fed Corn-non-dehulled Soybean Meal Diets

Zhang¹,

Cao²,

Chen³

et al. 2010

Asian Australas. J. Anim. Sci

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“…Various extraction methods and autolysis have been employed in the removal of the α-galactosides (Angel et al, 1988;Leske et al, 1993). However, these techniques are usually expensive and time consuming.…”

Section: Introductionmentioning

confidence: 99%

Effects of Alpha-galactosidase Supplementation to Corn-soybean Meal Diets on Nutrient Utilization, Performance, Serum Indices and Organ Weight in Broilers

Wang¹,

Lu²,

Li³

et al. 2005

Asian Australas. J. Anim. Sci

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Effects of alpha-galactosidase (GAL) on broiler corn-soybean meal diet was investigated. In experiment 1, sixty cockerels were allocated to five groups, including three enzyme treatments (GAL added at 0, 500, and 1,000 mg/kg diet), a nitrogen-free diet group and a fast group. The true nitrogen-corrected ME (TME n ) and true amino acid availability were determined. In experiment 2, 324 day-old chicks were used in a 2×3 factorial design consisting of two energy contents (high and low) and three GAL levels (0, 250, and 500 mg/kg). Three feeding phases, comprising 0-21 d, 22-35 d and 36-48 d, were involved. GAL addition improved TME n and the availability of methionine and cystine (p<0.05). The apparent ME (AME) or nitrogen-corrected AME (AME n ) and digestibility of dry matter, organic matter, calcium, and phosphorus were improved significantly on d 21, so was crude protein and an interaction of energy and GAL on AME n (p<0.05) was found on d 35. However, daily intake and daily gain were significantly improved with GAL addition (p<0.05) during 21 d. The small intestine relative weight decreased at 250 mg/kg GAL (p<0.05) on d 35, whereas presented an interaction between GAL and energy on d 21 (p<0.05). Likewise, this treatment increased breast muscle ratio (p<0.05). On d 21, triglycerides level of broilers showed interaction between energy and enzyme levels (p<0.05). Uric acid level in 500 mg/kg GAL declined linearly (p<0.05). On d 35, quadratic effects (p<0.05) were observed in total protein, albumin, globulin and cholesterol content for enzyme supplementation. And the interactive effects of energy and GAL on serum values showed more obviously. The study implies that GAL improved energy and nutrient availability of corn-soybean meal diet in broiler. The GAL supplementation to corn-soybean meal based diet can improve performance of broilers in early stages of growth.

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Extraction methods for removing soybean alpha-galactosides and improving true metabolizable energy for poultry

Leske

Jevne

Coon

1993

Animal Feed Science and Technology

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Autolysis of .alpha.-galactosides of defatted soy flakes: influence on nutritive value for chickens

Cited by 9 publications

References 7 publications

Effects of α-Galactosidase Supplementation on Performance and Energy Metabolism for Broilers Fed Corn-non-dehulled Soybean Meal Diets

Effects of α-Galactosidase Supplementation on Performance and Energy Metabolism for Broilers Fed Corn-non-dehulled Soybean Meal Diets

Effects of Alpha-galactosidase Supplementation to Corn-soybean Meal Diets on Nutrient Utilization, Performance, Serum Indices and Organ Weight in Broilers

Extraction methods for removing soybean alpha-galactosides and improving true metabolizable energy for poultry

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