Using Exogenous Enzymes to Increase the Nutritional Value of Soybean Meal in Poultry Diet

Ao, T.

doi:10.5772/19252

Cited by 16 publications

(20 citation statements)

References 66 publications

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“…Ao (2011) reported that enzyme supplementation can reduce the negative impact of anti-nutrients. The duodenum was particularly affected in this study because it is the first part of the small intestine and holds the pancreas in place.…”

Section: Discussionmentioning

confidence: 99%

“…Protein digestibility could be reduced by a multi-faceted action of ANF, including nutrient binding and increase in gut viscosity (Ao, 2011). Various scholars (Liu et al, 1997;Newkirk, 2010;Erdaw et al, 2015a;Erdaw et al, 2015b) have reported that feeding raw SBM with high levels of trypsin inhibitors and lectins negatively affects pancreatic function, the growth of birds, and feed efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, research (Costa et al, 2008;Dosković et al, 2013) has suggested that supplementation of poultry diets with exogenous enzymes may be effective. Microbial proteases are protein-digesting enzymes that are used in pig and poultry nutrition to break down the stored proteins and proteinaceous anti-nutrients in various plant materials (Ao, 2011;Barletta, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Partial replacement of commercial soybean meal with raw, full-fat soybean meal supplemented with varying levels of protease in diets of broiler chickens

Erdaw¹,

Perez-Maldonado²,

Bhuiyan³

et al. 2017

SA J. An. Sci.

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A 3 * 3 factorial study was used to evaluate the feed intake (FI), body weight gain (BWG), and feed conversion ratio (FCR) of broilers fed on the test diets. The commercial soybean meal (SBM) was replaced by raw, full-fat soybean meal (RSBM) at 0, 10 or 20%, equivalent to 0, 30 and 60 g/kg of diet, respectively, and the microbial protease was also supplemented in diets at 0.1, 0.2 or 0.3 g/kg, equivalent to ~7500, 15000 and ~22500 PROT/kg of diet, respectively. Microbial phytase (1000 FYT/kg) was uniformly added to each diet, which was fed to six replicate groups, with nine birds per replicate. Samples of test-ingredients and test-diets, after mixing, were also subjected to chemical analysis, prior to being used, to assess the nutritional compositions, particularly anti-nutritional factors. As the result of this study, the analysed concentrations of trypsin inhibitors (TI) in the diets ranging between 1730.5 and 9913.2 TIU/g. Increasing the levels of RSBM in the diets reduced the FI, during 1 to 35 d of age. Except in the starter phase, increasing the level of RSBM had no significant effect on BWG. When protease was added to the diets, the BWG was significantly improved during the periods of 1 -10 d, 1 -24 d and 1 -35 d. Feed efficiency was decreased by increasing the level of RSBM (1-10 d). Neither increasing levels of RSBM nor protease affected the yield of any meat part at d 35. The relative weight of the small intestine at d 10 increased with rising levels of RSBM, but was reduced when protease was added to the diets. In conclusion, commercial SBM could be replaced by RSBM up to 20% in diets for broilers when the test microbial protease is supplemented.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Partial replacement of commercial soybean meal with raw, full-fat soybean meal supplemented with varying levels of protease in diets of broiler chickens

Erdaw¹,

Perez-Maldonado²,

Bhuiyan³

et al. 2017

SA J. An. Sci.

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“…Microbial protease is a natural protein digestive enzyme that can decompose proteins and protein-like anti-nutritional substances stored in different parts of the plants (20,21), thereby increasing bioavailability of the nutrients. The e ciency of exogenous protease as a feed enzyme was undoubtedly testi ed in recent few years (16).…”

Section: Introductionmentioning

confidence: 99%

Effect of Bacillus Subtilis Protease on Growth, Production Performance and Feed Efficiency of Silkworm, Bombyx Mori L

Sun

Khalid

et al. 2020

Preprint

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Background:The effects of Bacillus subtilis protease on the silkworm (Bombyxmori L) production performance and feed efficiency were investigated. 2250 silkworms were randomly divided into two groups, the test group and the control group, each group had three replicates. A certain concentration of protease was sprayed to the mulberry leaves of the test group, while equal volume of deionized water was sprayed to the control group. Test diets were fed in three phases: 3rd instar, 4th instar and 5th instar larval stage.Results: The results demonstrated that: (i) final weight (FW), average daily gain (ADG), average daily feed intake(ADFI), and feed conversion ratio (FCR) in 4th and 5th larval instar, (ii) midgut protease activity, crude protein digestibility (CPD), crude fiber digestibility (CFD) and cocoon shell conversion rate (CSCR) (iii) the total number of bad cocoons,coarse cocoon, average pupa weight (APW), average cocoon shell weight (ACSW) and average cocoon weight (ACW) were extremely significantly higher (P<0.01) in test group as compared to control group. While, (i) the digestibility of crude lipid (EED) and (ii) the fly larvae cocoons in test group were higher significantly (P<0.05) than that of the control group. Conclusion:These results indicated that the B. subtilis protease could enhance the silkworm growth performance, feed efficiency and the cocoon quality of silkworm.

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“…Supplementing the diets with exogenous enzymes typically reduces the adverse effects of ANF on non-ruminant animals (Munir & Maqsood, 2013). Microbial proteases are natural protein-digesting enzymes used in pig and poultry nutrition to break down stored proteins and protein-like antinutrients in various plant materials (Ao, 2011;Barletta, 2011). The adverse effects of the ANF found in RFSB can also be reduced through supplementation with exogenous enzymes (Erdaw, Perez-Maldonado, & Iji, 2017c;Ravindran & Son, 2011).…”

mentioning

confidence: 99%

Supplementation of broiler diets with high levels of microbial protease and phytase enables partial replacement of commercial soybean meal with raw, full‐fat soybean

Erdaw

Perez-Maldonado²,

Iji

2018

Animal Physiology Nutrition

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A 3 × 3 + 1 factorial, involving three levels of protease (0, 15,000 or 30,000 PROT/kg) and three levels of phytase (1,000, 2,000 or 3,000 FYT/kg), was used to evaluate the effect of replacing commercial soybean meal (SBM) with raw, full-fat soybean (RFSB) at 75 g/kg of diet for broilers. A control diet was used for comparison. Each treatment was replicated six times, with nine birds per replicate. The concentration of trypsin inhibitors (TIs) in the test diets was approximately 10,193.4 TIU/kg. Regardless of enzyme supplementation, feed intake (FI) and body weight gain (BWG) of birds in the control group were superior to those on the test diets. Birds that received the protease-free test diets had reduced FI and BWG, but when supplemented with protease, were similar to the control diet in BWG, FI (except 0-35 days) and feed conversion ratio (FCR). When the test diet was supplemented with elevated levels (extradose) of protease and phytase, the BWG was improved during 0-10 days (p = .05) and 0-24 days (p < .01). Regardless of protease supplementation, the weight of thighs was lower for birds fed the test diets. Birds that received the control diet had smaller weight of pancreas. Increasing the level of phytase supplementation reduced (p < .05) the weight of the pancreas. The apparent ileal digestibility (AID) of CP and AA was higher in birds on the control diets, but this was also improved in test diets by protease supplementation. The activities of trypsin (7%), general proteolytic (11%) and lipase (12%) were slightly increased because of protease supplementation. Mucosal depth and apparent villus surface areas were increased by about 2.9% and 20%, respectively, due to supplementation of elevated level of phytase. It can be concluded that RFSB could partially replace SBM in broiler diets, provided the diets are supplemented with elevated levels of protease and phytase.

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Using Exogenous Enzymes to Increase the Nutritional Value of Soybean Meal in Poultry Diet

Cited by 16 publications

References 66 publications

Partial replacement of commercial soybean meal with raw, full-fat soybean meal supplemented with varying levels of protease in diets of broiler chickens

Partial replacement of commercial soybean meal with raw, full-fat soybean meal supplemented with varying levels of protease in diets of broiler chickens

Effect of Bacillus Subtilis Protease on Growth, Production Performance and Feed Efficiency of Silkworm, Bombyx Mori L

Supplementation of broiler diets with high levels of microbial protease and phytase enables partial replacement of commercial soybean meal with raw, full‐fat soybean

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