Response of chickens fed on hull-less barley to dietary β-glucanase at different ages

Salih, M.E.; Classen, H. L.; Campbell, Graham

doi:10.1016/0377-8401(91)90052-t

Cited by 137 publications

(73 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Salih et al (1991) reported that NSPs reduced feed intake and decreased broiler chicken performance. The most noticeable effect of NSPs in poultry diets is an increase in the viscosity of digesta and the excretion of sticky droppings.…”

mentioning

confidence: 99%

Performance of laying hens fed wheat, wheat-barley or wheat-barley-wheat bran based diets supplemented with xylanase

Mathlouthi¹,

Larbier²,

Marrakchi³

et al. 2002

Can. J. Anim. Sci.

View full text Add to dashboard Cite

Abbreviations: AME, apparent metabolizable energy; CF, crude fat; CP, crude protein; DM, dry matter; IU, international unit; ME, metabolizable energy; NSPs, non-starch polysaccharides; TME, true metabolizable energy; W, wheat-based diet; WB, wheat and barley-based diet; WBB, wheat, barley and wheat bran-based diet [193][194][195][196][197][198][199]. Two experiments were conducted to study the response of laying hens to a commercial enzyme preparation (Safizyme XP20) containing 70 000 IU g -1 xylanase. In the first experiment, 270 laying hens (ISA Brown), aged 28 wk, were fed basal diets of wheat (W), wheat-barley (WB) or wheat-barley and wheat bran (WBB) without xylanase, or supplemented with 1400 IU xylanase kg -1 in 3 × 2 factorial arrangement. In the second experiment, 180 ISA Brown laying hens, aged 28 wk, were assigned to 2 × 2 factorial arrangement and fed wheat-based diets containing 2753 or 2653 kcal metabolizable energy (ME) kg -1 without xylanase, or supplemented with 1400 IU xylanase kg -1 . Egg production (% hen-day), egg weight, egg mass, feed conversion ratio and changes in body weight were recorded for 12 wk. The effects of xylanase on true metabolizable energy (TME) values of wheat, barley and wheat bran were determined using roosters. Layers fed W-, WB-or WBB-based diets had similar egg mass. The feed conversion ratio of layers fed the WBB-based diet was better (P ≤ 0.05) than that of the other groups. Xylanase improved (P ≤ 0.05) egg mass of layers fed W-or WB-based diets, but it did not affect the performance of hens fed the WBB-based diet.Low dietary ME significantly (P ≤ 0.05) reduced the performance of laying hens. Xylanase supplementation improved (P ≤ 0.05) egg production, egg mass and feed conversion ratio of layers fed the low energy diet. It did improve the feed conversion ratio of layers fed the high-energy diet. Addition of 1400 IU xylanase kg -1 to the low-energy diet was equivalent to an increase of at least 100 kcal ME kg -1 . Xylanase increased (P ≤ 0.05) the TME values by 5.2 and 2.44% for wheat and barley, respectively, and did not affect the TME value of wheat bran.

show abstract

mentioning

confidence: 99%

Performance of laying hens fed wheat, wheat-barley or wheat-barley-wheat bran based diets supplemented with xylanase

Mathlouthi¹,

Larbier²,

Marrakchi³

et al. 2002

Can. J. Anim. Sci.

View full text Add to dashboard Cite

show abstract

“…Though intake differences over these periods were not statistically significant, in numerical terms the birds of both B100 and B150 treatments consumed substantially more than those of B0 between 0-7 and 7-21 days, but in the 21-37 day period the intake of B0 birds was greatest (2339 versus 2333 and 2270 g per bird per period, respectively). Age-related responses in bodyweight or bodyweight gain, feed conversion ratio, and feed consumption have been reported in meat-chickens by Elwinger & Saterby (1987) and Salih et al (1990) and in egg stock (Salih et al 1990). The latter authors showed that digesta viscosity associated with barley-based diets remained high in young stock regardless of age, but that feed transit time improved with age.…”

Section: Discussionmentioning

confidence: 63%

“…Salih et al (1990) demonstrated age-related changes in the capacity of young stock to assimilate diets based on high pglucan barley. They found that younger birds were able to extract greater benefit from the addition of feed enzymes than older birds, which evidently were less susceptible to P-glucan anti-nutritive effects.…”

Section: Discussionmentioning

confidence: 98%

“…The positive response was assumed to result from amelioration of P-glucan-induced raised viscosity in the small intestine (White et al 1983;Hesselman & Aman 1986;Salih et al 1990) with a corresponding improvement in nutrient utilisation. This premise was supported by the considerable improvement in performance obtained in Trial 1 for meat-chickens given the enzyme supplemented diets based on Fleet barley.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The effect of feed enzyme supplementation on the performance of meat‐chickens fed enzyme‐responsive barley‐ and wheat/maize‐based diets

King

Moughan

1998

New Zealand Journal of Agricultural Research

View full text Add to dashboard Cite

The effect of a commercial feed enzyme complex on the performance of meat-chickens fed barley-and wheat/maize-based pelleted diets was investigated using a variety of barley whose true metabolisable energy (TME) was found to be responsive to enzyme addition and a feed grade wheat and maize. Bioassays for TME of three varieties of barley and of wheat and maize, showed Fleet barley to be responsive to enzyme addition at 100 ppm (P < 0.01) and 200 ppm (P < 0.05). The liveweight, liveweight gain, and feed conversion ratio of meat-chickens receiving Fleet barley-based diets supplemented with an enzyme complex (Roxazyme G) at either 0, 100, or 150 ppm or a wheat/maize-based dietary control with no enzyme inclusion (W/M), was significantly improved by enzyme addition.Enzyme supplementation at 100 and 150 ppm of a W/M-based control diet had no significant effect on the performance of meat-chickens grown to 39 days.Use of feed enzymes may permit greater use of barley in meat-chicken diets and is a strategy capable of conferring performance-enhancing effects in appropriate circumstances. A97041

show abstract

“…Various authors have suggested that the low lipid digestibility in broiler chickens fed diets with a high content of NSPs may be due to bacterial overgrowth in the small intestine and subsequent excessive deconjugation of bile acids, which reduces their efficacy in solubilizing lipids (Huhtanen and Pensack, 1965;Salih et al, 1991). The adjusted crude protein digestibility shows the highest value for hulless barley (5) and the lowest value for untreated barley (2) (P < 0.05).…”

Section: Resultsmentioning

confidence: 99%

Comparison of performance and digestibility characteristics of broilers fed diets containing treated hulled barley or hulless barley

Moharrery¹

2006

Czech J. Anim. Sci.

View full text Add to dashboard Cite

This study was performed with growing chickens (14 to 56 days of age) to evaluate the effects of feeding a barley-based diet. The treatments were maize diet (1) as a control, barley diet with (4) or without (2) the commercial enzyme β-glucanase, barley treated with rumen fluid without protozoa (3) and hulless barley (5). The effects of treatments were investigated in a 42-day trial using 360 sexed broiler chickens. In a digestibility trial, 15 male broiler chicks were used at 45 days of age. In this regard, five treatments were offered to chickens in three replications individually. The experimental design for performance investigation was a completely randomised one with a 5 × 2 factorial arrangement of treatments. Each of the five treatments was replicated three times per sex (n = 3). The levels of barley in treatments (2) to (5) were 35% during the growing (14 to 42 days) and finishing (42 to 52 days) period. At the end of trial, two birds from each pen were selected and slaughtered. Blood samples were taken just before slaughter of birds. No significant differences (P > 0.05) were observed between (3) to (5) treatments with maize diet in weight gains, feed intake and feed conversion, but barley with no treatment (2) showed lower weight gain compared to the enzyme treatment and hulless barley diet (P < 0.05). Ether extract digestibility decreased significantly in all barley diets compared with maize diet (P < 0.05). Digestibility of DM, CP, and NFE was lower in barley diet with no treatment, in comparison with other treatments (P < 0.05). Reduction of serum cholesterol was observed in birds on hulless barley diet (P < 0.05), but serum triacylglycerols and glucose did not show any significant differences between treatments (P > 0.05). Mean percentage yield of breast showed the highest percentage in barley diet with no treatment (P < 0.05) and abdominal fats were produced in lowest amounts in carcasses on hulless barley diets (P < 0.05).    

show abstract

Response of chickens fed on hull-less barley to dietary β-glucanase at different ages

Cited by 137 publications

References 17 publications

Performance of laying hens fed wheat, wheat-barley or wheat-barley-wheat bran based diets supplemented with xylanase

Performance of laying hens fed wheat, wheat-barley or wheat-barley-wheat bran based diets supplemented with xylanase

The effect of feed enzyme supplementation on the performance of meat‐chickens fed enzyme‐responsive barley‐ and wheat/maize‐based diets

Comparison of performance and digestibility characteristics of broilers fed diets containing treated hulled barley or hulless barley

Contact Info

Product

Resources

About