Effect of pelleting and enzyme supplementation on variation in feed value of wheat-based diets fed to broiler chicks

Scott, T. A.; Silversides, F. G.; Zijlstra, R. T.

doi:10.4141/a02-095

Cited by 12 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is generally known that the addition of exogenous enzymes to wheat-and maize-based diets increases digestibility of nutrients in broiler chickens (Scott et al, 2003). However, in the current study there were no significant changes in ileal nutritient digestibility owing to MIL or enzyme supplementation or their interactions in broiler chicken at 21 days of age.…”

Section: Discussioncontrasting

confidence: 78%

High levels of maize in broiler diets with or without microbial enzyme supplementation

Bhuiyan¹,

Islam²,

Iji³

2013

SA J. An. Sci.

View full text Add to dashboard Cite

________________________________________________________________________________ AbstractA total of 210 day-old male Cobb broiler chickens were randomly assigned to six treatments in a 3 × 2 factorial design. The treatments consisted of three levels of maize: 250 g/kg (LM), 500 g/kg (MM) and 750 g/kg diet (HM) and two levels of enzymes: plus enzyme and no enzyme. Each treatment was replicated five times, with seven birds per replicate. Chickens were reared in multi-tiered brooder cages to 21 days of age in a climate-controlled room. Feed and water were provided ad libitum. Over the feeding period (21 d), there was an increase in feed intake as maize inclusion level (MIL) increased in diets, while supplementation with microbial enzyme improved feed intake only in the MM diet. There was an improvement in live weight (LW) in chickens with increased MIL in their diets. The microbial enzyme supplement also improved LW, but only on the MM diet. The feed conversion ratio (FCR) was improved with increase in MIL in diets, but the enzyme supplements had no effect on FCR up to day 21. At day 21 there was an increase in relative weight of the small intestine with an increase in MIL, but this was not affected by enzyme supplementation. The weight of the liver increased with increase in MIL and enzyme supplementation. At day 21 the pH of the digesta in the gizzard declined with an increase in MIL in diets. In general, there was no significant effect of MIL or enzyme supplementation on pancreatic tissue protein content, chymotrypsin amidase activity and ileal digestibility of protein, gross energy and starch at 21 days of age. The population of Clostridium perfringens decreased significantly with increase in MIL, but other microbial species were unaffected. The present findings suggest that maize could be included at much higher levels than is currently done without detrimental effects on productivity. Exogenous enzymes also resulted in a significant increase in some of these variables. ________________________________________________________________________________

show abstract

Section: Discussioncontrasting

confidence: 78%

High levels of maize in broiler diets with or without microbial enzyme supplementation

Bhuiyan¹,

Islam²,

Iji³

2013

SA J. An. Sci.

View full text Add to dashboard Cite

show abstract

“…Scott et al (2003) found high correlations (approximately 0.70) for AME and FCR between broilers fed pelleted or unpelleted wheat cultivars. Growth performance in this study was not a determinative criterion in assessing energy utilization as it was not affected, despite distinct differences in energy utilization due to phytase supplementation.…”

Section: 37cdmentioning

confidence: 96%

“…Heat processing of cereals gelatinizes starch to some extent (Medel et al 2000), facilitating its endogenous enzymatic degradation, and solubilizes fiber components that might enhance the activity of exogenous enzymes (VukicVranjes and Wenk 1995). In addition, Scott et al (2003) demonstrated that pelleting destroyed endogenous phytase and NSP enzymes in wheat-based diets and increased the levels of soluble NSP, but did not improve performance of broilers, possibly explained by changes in the water hydration rate in the gut. A faster water hydration rate may enable broilers to increase nutrient intake by increasing the rate of diet passage (Scott et al 2003).…”

mentioning

confidence: 99%

“…In addition, Scott et al (2003) demonstrated that pelleting destroyed endogenous phytase and NSP enzymes in wheat-based diets and increased the levels of soluble NSP, but did not improve performance of broilers, possibly explained by changes in the water hydration rate in the gut. A faster water hydration rate may enable broilers to increase nutrient intake by increasing the rate of diet passage (Scott et al 2003). The efficacy of microbial phytase in improving P availability in poultry is clearly established (Broz et al 1994).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Effect of wheat type grinding, heat treatment and phytase supplementation on growth efficiency and nutrient utilization of wheat-based diets for broilers

Afsharmanesh¹,

Scott²,

Silversides³

2008

Can. J. Anim. Sci.

Self Cite

View full text Add to dashboard Cite

Afsharmanesh, M., Scott T. A. and Silversides, F. G. 2008. Effect of wheat type, grinding, heat treatment, and phytase supplementation on growth efficiency and nutrient utilization of wheat-based diets for broilers. Can. J. Anim. Sci. 88: 57Á64. This experiment studied the effect of phytase and processing (heat treatment, grind size) on performance and nutrient utilization of broilers fed diets from 1 to 21 d that included hard red spring (HRS) and durum wheat with three grind sizes (470, 560, 630 mm) with or without heat treatment (oven dry at 808C for 15 h) before supplementation with phytase (Natuphos † 0 or 600 FTU kg(1 ). All 24 diets contained 0.5 g Avizyme 1302 kg(1 and were formulated (80% wheat, 20% basal diet) to supply nutrients necessary to meet the requirements of broiler chicks, except for a low level of nonphytate phosphorus (P, 2.7 g kg ). The medium ground HRS-based diet produced significantly better feed conversion ratio (FCR) and body weights compared with the other two grind sizes. Heat treatment significantly improved feed conversion ratio and apparent metabolizable energy (AME), protein, and P digestibility of diets. It also significantly decreased feed intake, but produced no differences in 21 d body weight. Supplementation with phytase significantly improved AME, protein, and P digestibility of test diets. The AME of diets was influenced by wheat type, processing and grind size. Phytase increased N and P digestibility. Improvements in N and P digestibility by phytase and heat treatment were dependent on wheat type and grind size. The present results suggest an advantage of both phytase and xylanase in durum-and HRSbased diets. Heat processing destroyed endogenous phytase and xylanase in wheat-based diets, and increased the levels of soluble non-starch polysaccharides. Combined phytase, heat treatment, and grind size may synergistically improve N and P digestibility.

show abstract

“…In contrast, Herstad and McNab (1975) concluded that HP of barley did not have any effect on performance of broilers at any age. Scott et al (2003) demonstrated that pelleting destroyed endogenous phytase and NSP enzymes in wheat-based diets and increased the levels of soluble NSP, but did not improve performance of broilers, possibly explained by changes in the water hydration rate in the gut. Autoclaving rye greatly potentiated the growth response to dietary pentosanase while producing little or no effect without enzymes (Teitge et al 1991).…”

Section: Introductionmentioning

confidence: 99%

The effects of dry heat processing, autoclaving and enzyme supplementation on the nutritive value of wheat for growing Japanese quails

Kianfar

Moravej

Shivazad

et al. 2013

Journal of Applied Animal Research

View full text Add to dashboard Cite

Two experiments were conducted to study the effect of autoclaving and heat processing (HP) and enzyme supplementation on wheat nutritive value for quails. In the first experiment, 72 male quails (13 weeks) were used to determine apparent metobalisable energy corrected for nitrogen (AMEn) of wheat samples. In the second experiment, 720 seven-day-old as-hatched Japanese quail were randomly assigned to a 3 )3 factorial design. Factors include three processing methods (untreated, autoclaving and HP) and three levels of enzyme (0, 0.25 and 0.5 g/kg). Each treatment group consisted of 4 replicates of 20 birds. According to the results, the total and insoluble none starch polysaccharides (NSP) and insoluble to soluble NSP ratio increased by processing (PB0.01) and also total and insoluble b-glucan increased by processing (PB0.01). The amount of AME, AMEn, gross energy efficiency and dry matter digestibility of wheat has significantly increased by autoclaving (P B0.05). Quails performance was increased by wheat autoclaving (PB0.05). However, wheat dry heat processing had no significant effect on performance. Adding enzyme to diet significantly improved quails performance. By autoclaving wheat, carcass and breast weight significantly increased (PB0.05). Adding enzyme to diet significantly increased breast and thigh weight (P B0.05). In conclusion, we can use autoclaving, in spite of enzyme supplementation, to improve growth rate and feed conversion ratio of growing quail fed diets based on wheat.

show abstract

Effect of pelleting and enzyme supplementation on variation in feed value of wheat-based diets fed to broiler chicks

Cited by 12 publications

References 14 publications

High levels of maize in broiler diets with or without microbial enzyme supplementation

High levels of maize in broiler diets with or without microbial enzyme supplementation

Effect of wheat type grinding, heat treatment and phytase supplementation on growth efficiency and nutrient utilization of wheat-based diets for broilers

The effects of dry heat processing, autoclaving and enzyme supplementation on the nutritive value of wheat for growing Japanese quails

Contact Info

Product

Resources

About