A review on role of exogenous enzyme supplementation in poultry&lt;br&gt;production

Munir, Khusheeba; Maqsood, Sajid

doi:10.9755/ejfa.v25i1.9138

Cited by 28 publications

(7 citation statements)

References 66 publications

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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).…”

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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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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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“…The digestibility of Ca, P, K, S, Zn, and Fe was also increased by enzyme supplementation, when QB (phytase) was added singly or combined with Axtra XB. It has been reported that the addition of phytase to maize-based diets increases the availability of phytate-phosphorus and other minerals, including Ca, Zn, Cu, and Fe [31, 35]. Similarly, Bradbury et al [36] found that phytase addition to broiler diets improved the digestibility of both Ca and P.…”

Section: Discussionmentioning

confidence: 99%

Energy utilization, nutrient digestibility and bone quality of broiler chickens fed Tanzania-type diets in different forms with enzymes

Chang’a¹,

Abdallh²,

Ahiwe³

et al. 2019

J Anim Sci Technol

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A study was conducted to determine the influence of feed form and microbial enzyme supplementation on energy utilization, bone quality, and amino acid and mineral digestibility of broiler chickens. Four hundred and eighty Ross 308, day-old broiler chickens were randomly assigned to eight diets formulated from commonly used ingredients in Tanzania. A 2 (pellet or mash) × 4 (control, Axtra XB, Quantum Blue (QB) and Axtra XB + QB enzyme) factorial array in a completely randomized design having six replicates per treatment (10 birds per replicate) was used. Birds were raised in climate-controlled rooms in a 3-phase; starter (0–10 days), grower (11–24 days) and finisher (25–35 days). Apparent metabolizable energy (AME), metabolizable energy intake, net energy of production, energy retained as protein (REp), and efficiency of metabolizable energy use for energy and protein retention were higher ( p < 0.05) in birds fed pelleted diets. The AME and REp was higher ( p < 0.05) with enzyme supplementation. Ash content, weight, length, width and breaking strength of tibia bones were highest ( p < 0.05) in birds on pelleted diets. Tibia bone traits were improved ( p < 0.05) when enzymes were included, particularly in a combination of QB and Axtra XB. However, potassium, magnesium, and zinc contents were highest ( p < 0.05) when QB was supplemented. Digestibility of all amino acids was higher ( p < 0.05) in birds supplied with pellets and with enzyme supplementation for most amino acids, except for serine. There was a positive interaction ( p < 0.05) between feed form and enzymes on lysine and phenylalanine digestibility. Digestibility of Ca, P, K, S, Zn, and Fe was higher ( p < 0.05) in birds fed pelleted diets, while those on mashed diets had higher ( p < 0.05) digestibility of Cu and B. The digestibility of P, K, and Zn was highest ( p < 0.001) when QB was added, while Ca, P, S, and B digestibility was highest when a combination of Axtra XB + QB was applied. Pelleted diets with or without enzymes improved energy utilization, digestibility of amino acids, and minerals, and increased bone strength in broiler chickens.

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“…enzymes, such as β-glucanases, amylases, cellulases, xylanases, proteases, galactosidases, protease and lipases, each acting on a certain type of substrate, have been used to reduce the negative nutritional factors on bird performance. However, only carbohydrates (β-glucanases, xylanases, and galactosides) can act as enzyme-substrate complexes, reducing the viscosity of the gastrointestinal system (Munir & Maqsood, 2013), allowing for endogenous enzyme activity, increasing absorption and improving nutrient metabolizability. (Alagawany, Elnesr, & Farag, 2018).…”

Section: Exogenousmentioning

confidence: 99%

Xylanases in diets with alternative feeds and energy reduction in commercial layers

Andrade

Garcia

Kiefer

et al. 2021

Semina: Ciênc. Agrár.

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The use of alternative ingredients has been increasing in a continuing attempt to reduce production costs, along with the use of additives, such as carbohydrases, for their possible positive effects on nutrient metabolization by layers. Thus, this study aimed to evaluate the effects of different xylanases in diets with reduced metabolizable energy (ME) and the inclusion of alternative ingredients on the metabolizability of nutrients in diets for commercial laying hens, by conducting two metabolism tests. In the first trial,100 layers hens were distributed in a fully randomized 2 × 2 + 1 factorial design (two metabolizable energy reductions × two xylanases, plus one control diet). In the second assay,140 layer hens were distributed in a fully randomized 2 × 3 + 2 factor design (two xylanases× three ingredients, plus two control diets, positive and negative). It was concluded that supplementation with pantanal xylanase improved the metabolizability of nutrients in corn-based diets and soybean meal for light commercial layers, allowing for a reduction of up to 200 kcal/kg of ME in the diets. Xylanases are more effective on wheat bran enabling a decrease of 150 kcal/kg of ME in commercial laying diets without affecting nutrient metabolizability. The action of pantanal xylanase in diets containing fibrous ingredients was similar to that of commercial xylanase.

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A review on role of exogenous enzyme supplementation in poultry<br>production

Cited by 28 publications

References 66 publications

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

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

Energy utilization, nutrient digestibility and bone quality of broiler chickens fed Tanzania-type diets in different forms with enzymes

Xylanases in diets with alternative feeds and energy reduction in commercial layers

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