Enzyme Supplements to Poultry Feeds

Hastings, W. H.

doi:10.3382/ps.0250584

Cited by 28 publications

(9 citation statements)

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“…Feed efficiency obtained with the treated barley diets was significantly better than that for chicks fed the diet in which corn replaced the barley. Hastings (1946) found that addition of a diastatic enzyme material to a high fiber chick diet improved growth and feed efficiency. This preparation was without effect when added to a low fiber diet in which wheat and oats replaced the milling byproducts.…”

Section: Discussionmentioning

confidence: 97%

Improvement in the Nutritional Value of Barley for Chicks by Enzyme Supplementation

et al. 1957

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Section: Discussionmentioning

confidence: 97%

Improvement in the Nutritional Value of Barley for Chicks by Enzyme Supplementation

et al. 1957

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“…One of the first studies on the use of exogenous enzymes as a supplement of animal diets with the purpose of improving dietary nutrition value was performed in the 1940s (Hastings, 1946). Research on this subject achieved its full extension in the 1980s and 1990s in a broad area of biotechnology (Bhat, 2000).…”

Section: Performance and Some Intestinal Functions Of Broilers Fed DImentioning

confidence: 99%

Performance and some intestinal functions of broilers fed diets with different inclusion levels of sunflower meal and supplemented or not with enzymes

Polovinski-Horvatović

Glamočić

Žikić

et al. 2015

Rev. Bras. Cienc. Avic.

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Enzyme supplementation of diets enhances broiler performance by improving some of the basic production parameters such as average feed intake, feed conversion ratio, or average weight gain. The enzyme NSPase is commonly used in broiler diets containing high levels of viscous cereals such as barley, oat, wheat, or sorghum. The use of NSPase in diets with different levels of sunflower meal has been not been extensively explored. The experiment was carried out to evaluate the effects of the inclusion of sunflower meal levels in grower and finisher broiler diets supplemented or not with enzymes (cellulase, β-glucanase, and xylanase) on broiler performance, intestinal function, and carcass traits. A completely randomized experimental design, with 3*2 factorial arrangement with five replicates, was applied (1200 Ross 308 broilers). Sunflower meal inclusion and enzyme supplementation started in grower phase. Broiler performance significantly improved in grower phase (weight gain and feed conversion ratio) by enzyme supplementation, while the effect of sunflower meal was evident in finisher phase, when it significantly reduced weight gain. Sunflower meal increased ileal viscosity, and the interaction between diet and enzyme supplementation was statistically significant. Maltase activity was reduced with sunflower meal dietary inclusion, while enzyme supplementation had no effect either on maltase or sucrase activity. There were no any effects of sunflower meal inclusion with or without enzyme supplementation on carcass characteristics. It can be concluded that high inclusion of sunflower meal in broiler diets may impair broiler performance, but this may be overcome by enzyme supplementation. The effect of enzyme supplementation more evident in the grower phase than in the finisher phase.

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“…Since the 1920s, researchers have observed beneficial effects from enzyme supplements in poultry feeds, particularly those feeds that contain grains with a high fiber component (Hastings, 1946;Moran and McGinnis, 1968;Pettersson and Aman, 1989). Diets containing barley, oats, and rye were the focus of attention.…”

Section: Introductionmentioning

confidence: 99%

Growth and Intestinal Morphology of Male Turkeys as Influenced by Dietary Supplementation of Amylase and Xylanase

et al. 1995

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Three diets, a control and two diets supplemented with an enzyme cocktail premix containing either amylase or xylanase, were each fed to 100 male poults (10 replicates of 10 poults per pen) from 0 to 5 wk of age to observe the effects upon body weight gain, feed intake, and feed efficiency. The amylase-supplemented diet significantly increased feed efficiency through the first 2 wk and significantly increased body weight gain and feed intake through the first 3 wk. Xylanase supplementation did not improve growth or feed efficiency over the control. Mean villus length within the jejunum and ileum was significantly increased at 2 and 3 wk of age by dietary supplementation of amylase when compared with the control and xylanase diets. These findings suggest that the increased growth associated with the amylase diet during 0 to 3 wk can, in part, be explained by the increase in absorptive surface area, allowing for increased digestion of available nutrients coupled with increased enzyme activity for carbohydrate degradation from the supplemental enzymes.

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Enzyme Supplements to Poultry Feeds

Cited by 28 publications

References 1 publication

Improvement in the Nutritional Value of Barley for Chicks by Enzyme Supplementation

Improvement in the Nutritional Value of Barley for Chicks by Enzyme Supplementation

Performance and some intestinal functions of broilers fed diets with different inclusion levels of sunflower meal and supplemented or not with enzymes

Growth and Intestinal Morphology of Male Turkeys as Influenced by Dietary Supplementation of Amylase and Xylanase

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