The apparent metabolisable energy and amino acid digestibility of wheat, triticale and wheat middlings for broiler chickens as affected by exogenous xylanase supplementation

Im, Hew Lap; Ravindran, V.; Ravindran, G.; Pittolo, P. H.; Bryden, W. L.

doi:10.1002/(sici)1097-0010(199909)79:12<1727::aid-jsfa428>3.0.co;2-k

Cited by 14 publications

(9 citation statements)

References 17 publications

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“…The digestibility of amino acids in sample 1 was better than sample 2 (Table 5). However, the wheat screening samples used in this experiment had similar ileal amino acid digestibility to wheat according to data reported by Lap Im et al (1999). Again, the digestibility values were high but the results show the importance of sample composition in determining nutritional value.…”

Section: Methodssupporting

confidence: 79%

Nutritional value of wheat screenings for broiler chickens

Audren

Classen²,

Schwean³

et al. 2002

Can. J. Anim. Sci.

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Audren, G. P., Classen, H. L., Schwean, K. V. and Racz, V. 2002. Nutritional value of wheat screenings for broiler chickens. Can. J. Anim. Sci. 82: 393-398.Two trials were conducted to study the nutritional value of two wheat screening samples in broiler diets. Experiment 1 evaluated the chemical composition, and energy and amino acid digestibility while, exp. 2 evaluated the performance of 1980 female broiler chickens, housed in straw litter pens, and fed four different levels of the two wheat screening samples. In exp. 2, the wheat screening samples replaced 0%, 25%, 50% and 100% for sample 1 and 0, 25, and 50% for sample 2 of the wheat in diets fed to broilers. Each treatment was replicated six times with 55 birds per replication. The metabolizable energy, and protein content, and mean ileal amino acid digestibility were 3107 kcal kg -1 , 15.77%, 83.3%, and 3023 kcal kg -1 , 15.19%, 80.4% for wheat screening samples 1 and 2, respectively. The samples contained 90.5 and 88.2% wheat and the major weed seed in both samples was wild buckwheat, which was 4.5 and 6.3% in samples 1 and 2, respectively. In the broiler feeding trial, no significant differences were found between the wheat diet and those containing wheat screenings with regards to growth, feed efficiency, and mortality. There were variations in the composition of wheat screening samples; however, in this study, these variations did not significantly affect the performance of broiler chickens. Wheat screenings totally replaced wheat in balanced broiler diets without negatively affecting performance. Key words:Broiler chicken, feed, wheat screenings, wild buckwheat.Audren, G. P., Classen, H. L., Schwean, K. V. et Racz, V. 2002. Valeur nutritive des criblures de blé pour poulets de chair. Can. J. Anim.. Sci. 82: 393-398. Deux expériences ont servi à étudier la valeur nutritive des criblures de blé dans l'aliment des poulets de chair. L'expérience 1 a étudié la composition chimique, énergétique ainsi que la digestibilité des acides aminés de deux échantillons de criblures de blé. L'expérience 2 a évalué les performances de 1980 poulets de chair femelles, élevées en parquets sur litière de paille et nourries avec un aliment contenant différents niveaux de ces deux échantillons de criblures de blé. Dans l'expérience 2, les criblures de blé remplaçaient 0%, 25%, 50% et tout le blé de l'aliment des poulets de chair. Chaque aliment expéri-mental avait 6 répétitions avec 55 oiseaux par répétition. L'énergie metabolisable, le contenu protéique, et la digestibilité moyenne des acides aminés dans l'ilium étaient respectivement, 3107 kcal kg -1 , 15.77%, 83.3%, et 3023 kcal kg -1 , 15.19%, 80.4% pour les échantillons 1 et 2 de criblure de blé. Les échantillons 1 et 2 contenaient respectivement, 90.5% ou 88.2% de blé et la mauvaise herbe principale dans les deux échantillons était le renouée liseron (Polygonum convolvulus L.) qui représentait 4.5% et 6.3% dans les échantillons 1 et 2 respectivement. Aucunes différences significatives, pour la croissance, l'efficacité...

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Section: Methodssupporting

confidence: 79%

Nutritional value of wheat screenings for broiler chickens

Audren

Classen²,

Schwean³

et al. 2002

Can. J. Anim. Sci.

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show abstract

“…Diets using wheat cultivars in the second year had higher digestibility of CP values than diets using wheats grown in the first year. Improvements in protein and amino acid digestibility when broilers were fed wheat-based diets with supplemental xylanases have also been reported in the literature (Bedford et al 1998;Hew et al 1998;Im et al 1999).…”

Section: Resultsmentioning

confidence: 73%

“…Bedford et al (1998) found that supplementing these diets with a xylanase enzyme improved protein digestibility by an average of 4% and reduced the variability among the samples (Bedford et al 1998). Im et al (1999) also found that broilers fed wheatbased diets responded to xylanase supplementation with an increase in ileal amino acid digestibility. Bedford (1994) found that addition of xylanases to diets containing 49.4% wheat and 15.0% triticale resulted in an improvement in weight gain and feed conversion ratio (FCR) of broiler chicks.…”

mentioning

confidence: 96%

Effect of cultivar and enzyme supplementation on nutrient availability and performance of broilers fed Maritime Canadian wheat

Rafuse¹,

Silversides²,

Bedford³

et al. 2005

Can. J. Anim. Sci.

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Rafuse, J. L., Silversides, F. G., Bedford, M. R. and Simmins, P. H. 2005. Effect of cultivar and enzyme supplementation on nutrient availability and performance of broilers fed Maritime Canadian wheat. Can. J. Anim. Sci. 85: 493-499. The feeding value of wheat is affected by the content of soluble non-starch polysaccharides (NSP), which varies among cultivars and the environment in which they are grown. Dietary enzymes can reduce the negative effects of NSP and improve the apparent metabolizable energy (AME) content of the wheat. This study examined differences in feeding value of four wheat cultivars grown in 2 crop years in the Maritime provinces of Canada and the need for enzymes. In a growth trial, diets containing one of the Maritime wheats or corn were fed with or without commercial enzymes containing, for wheat-based diets a mixture of xylanase and protease, and for corn-based diets a mixture of xylanase, protease, and amylase. In a broiler chick bioassay, diets containing 80% wheat were fed with or without a commercial enzyme with xylanase and protease activities. Enzymes significantly lowered body weight gain of birds fed Walton wheat in the second year, and improved the grower feed conversion ratio of birds fed Norboro wheat. Enzyme supplementation significantly improved apparent metabolizable energy and digestibility of crude protein. The AME content did not appear to be a direct indicator of performance. There were significant differences in AME content among the wheat samples. Enzymes generally did not improve performance in this study, possibly due to the relatively low in vitro viscosity values of these samples. Maritime wheats were equal or compared favourably with the sample of wheat from Western Canada and to locally obtained corn. Mots clés: Blé, rendement des poulets de chair, énergie métabolisable apparente, enzymeThe feeding value of wheat is adversely influenced by the presence of anti-nutritional factors in the form of soluble non-starch polysaccharides (NSP). In the gastrointestinal tract of broilers, a portion of the NSP becomes soluble and results in sticky droppings, reduced uptake of nutrients, and decreased weight gain.

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“…Non-starch polysaccharides (NSPs) are long-chain carbohydrates that are not digestible in the gastrointestinal tract of pigs and pentosans are the major class of NSPs in rye. Pentosans increase the viscosity of feedstuff, easily absorb water (they can swell up to 8 times of their initial weight and volume) and hamper the digestion of various nutrients (Boros et al 1993;Bakker et al 1998;Im et al 1999;Boros 2002). Pentosan 'swelling' also causes a false feeling of 'fullness', and decreases appetite and feed intake (Misir and Marquardt 1978).…”

Section: Discussionmentioning

confidence: 99%

Assessing the efficiency of using a modern hybrid rye cultivar for pig fattening, with emphasis on production costs and carcass quality

et al. 2015

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There were two goals of the present experiment, namely (1) to determine and compare the concentrations of basal nutrients and anti-nutrients in the grain of a modern hybrid rye and barley cultivars, and (2) to compare the effectiveness of the rye- and barley-containing diets for pig fattening. Crude protein and starch contents were greater (P < 0.01) in rye (cv. Visello) than in barley (cv. Bryl) but fibre and total lipid concentrations were lower (P < 0.01) in rye grain. Mean concentrations of alkylresorcinols and pentosans, as well as the activity of trypsin inhibitors, were all higher (P < 0.01) in rye grain. In all, 150 PIC gilts were randomly divided into two equinumerous groups; control pigs were fed a diet containing barley as the main cereal ingredient (starter phase (SP), 35% of feed content; grower phase (GP), 40% of feed content; and finisher phase (FP), 65% of feed content), while the experimental group received a diet with rye replacing a proportion of barley (10% during SP, 25% during GP and 50% during FP); the diets for both subsets of animals also contained wheat and soybean meal to obtain a proper level of nutritional value. The average weight gain of the rye-fed gilts (783 ± 183 g/day; mean ± s.d.) was greater (P < 0.05) than that of control animals (747 ± 218 g/day). This difference in weight gain was due mainly to an increase in daily feed intake (2.35 ± 0.21 and 2.15 ± 0.19 kg/day in the experimental and control groups, respectively; P < 0.01) recorded during the grower and finisher phase. Carcasses from both groups exhibited the same lean meat content; however, the percentage of carcasses in the higher classes according to the EUROP quality scale tended to be greater in the experimental group, which resulted in a higher (P < 0.05) carcass value than for barley-fed controls. The present results indicated that a modern rye cv. Visello is a safe and cost-effective feed for growing pigs, and yields significantly better outcomes than commonly used barley-containing diets in terms of carcass quality and price.

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The apparent metabolisable energy and amino acid digestibility of wheat, triticale and wheat middlings for broiler chickens as affected by exogenous xylanase supplementation

Cited by 14 publications

References 17 publications

Nutritional value of wheat screenings for broiler chickens

Nutritional value of wheat screenings for broiler chickens

Effect of cultivar and enzyme supplementation on nutrient availability and performance of broilers fed Maritime Canadian wheat

Assessing the efficiency of using a modern hybrid rye cultivar for pig fattening, with emphasis on production costs and carcass quality

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