The Effect of Wheat Phosphorus Content and Supplemental Enzymes on Digestibility and Growth Performance of Weaner Pigs

    A 2x4 factorial experiment was conducted with the respective factors being wheat phosphorus (P) content (low-P variety: 2.52 g/kg DM, and high-P variety: 3.76 g/kg DM) and enzyme supplementation (no enzyme, xylanase, phytase, and xylanase plus phytase). The enzymes were xylanase (Porzyme 9300, minimum activity 4000 U/g endo-1,4--xylanase) and phytase (PhyzymeTM XP, activity 4100 U/g phytase). Eighty male weaner pigs (LandracexLarge White, 5.4+0.07 kg) were fed an identical pre-trial diet for 1 week and then received their respective experimental diet for 3 weeks. All diets contained 610 g wheat/kg and similar concentrations of calculated digestible energy (14.2 MJ/kg), available lysine (0.78 g/MJ DE), available P (3.2 g/kg) and Ca:P (1.46:1). Collection of faeces was made for three consecutive days from day 14 for determination of digestibility, using titanium dioxide as an indigestible marker. The main effect of wheat P content on the coefficient of total tract apparent digestibility (CTTAD) of DM, CP, energy, P and Ca was not significant (P > 0.05). Enzyme supplementation, as a main effect, influenced the CTTAD of DM (P < 0.01) and energy (P < 0.01), such that xylanase plus phytase decreased their CTTAD. Xylanase plus phytase improved the CTTAD of P and Ca in the high-P wheat variety diet but not in the low-P wheat variety diet (interaction P < 0.001 and P < 0.05, respectively). For performance, significant improvements (P < 0.05) were only seen in week 1 of the feeding trial. In summary, the wheats used in this study responded differently to xylanase and phytase, and a synergistic effect of xylanase plus phytase supplementation was not significant for either digestibility or pig performance
    Document information
    Product / service: Carbohydrases and Proteases
    Publication date: 01/02/2005
    Species: Pig, Nursery/piglet
    Authors: Kim JC, Simmins PH, Mullan BP, Pluske JR
    Doctype: Publications & Citations
    Publication / conference: Animal Feed Science & Technology, volume 118
    Regions and countries: Global
    Keywords: absorption, activity, aleurone, animal, feed, anti-nutritive, antinutritive, apparent, digestibility, arabinoxylan, arabinoxylans, available, lysine, beer, bound, bran, ca, cereal, chicken, chickens, combination, complex, concentration, content, cp, dan, de, deficiency, diet, diets, digestibilities, digestible, energy, digestion, dm, effects, efficacy, enzyme, supplementation, enzymes, faeces, ingredients, feeding, grain, growth, performance, interaction, layer, male, marker, mineral, n, non, starch, polysaccharide, non-starch, polysaccharides, nsp, nutrient, p, phosphorus, phytase, phytate, phytate-phosphorus, phytic, acid, pig, pigs, plant, plants, protein, proteins, response, review, salt, sand, storage, synergistic, titanium, dioxide, total, varieties, variety, weaner, wheat, wheats, xylanase
    Production challenge(s): Gut health
    Diets: Wheat, rye & triticale, Corn, broken rice, wheat, Corn, broken rice, sorghum, Wheat, rye and tricale containing by-products
    Brands: Porzyme® tp 100, Porcheck
    Resource ref: 8237
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