Escherichia Coli Phytase Improves Growth Performance of Starter, Grower And Finisher Pigs Fed Phosphorus Deficient Diets

    Corn-soybean meal-based diets, consisting of a high-P control (HPC) containing supplemental dicalcium phosphate (DCP), a basal diet containing no DCP, and the basal diet plus Escherichia coli phytase at 500 or 1,000 phytase units per kilogram (FTU/kg, as-fed basis) were fed to evaluate growth performance in starter, grower, and finisher pigs. Pigs were blocked by weight and gender, such that average weight across treatments was similar, with equal numbers of barrows and gilts receiving each treatment in each block. In Exp. 1, 48 pigs with an average initial BW of 11 kg, housed individually, with 12 pens per diet, were used to evaluate growth performance over 3 wk. Overall ADG and G:F were increased linearly (P ??0.05) by dietary phytase addition. Final BW and plasma P concentrations at 3 wk also increased linearly (P ??0.05). In Exp. 2, 128 pigs with an average initial BW of 23 kg, housed four pigs per pen, with eight pens per diet, were used to evaluate growth performance over 6 wk. A linear increase in response to phytase was noted for ADG and G:F in all three 2-wk periods, as well as overall (P ??0.05). Percentage of bone ash also showed a linear increase (P ??0.01). In Exp. 3, 160 pigs (53 kg), housed five pigs per pen, with eight pens per diet, were used to evaluate growth performance over 6 wk. A linear increase was detected for final BW, as well as ADG and G:F in the first and second 2-wk periods, and overall (P ??0.01). Twenty-four 15-kg individually housed pigs were used to evaluate total-tract nutrient digestibility in Exp. 4. Daily absorption of P linearly increased (P ??0.05) with phytase supplementation. Results of this research indicate that E. coli phytase is effective in liberating phytate P for uptake and utilization by starter, grower, and finisher pigs
    Document information
    Product / service: Phytases
    Publication date: 01/01/2005
    Species: Pig, Nursery/piglet, Grower/finisher
    Authors: Jendza JA, Dilger RN, Sands JS, Adeola O
    Doctype: Publications & Citations
    Publication / conference: Journal of Animal Science, volume 83
    Regions and countries: Global
    Keywords: absorption, ash, barrows, bone, bw, coli, phytase, concentration, control, dan, diet, dietary, diets, digestibilities, digestibility, e, escherichia, finisher, pigs, gilts, grower, growth, performance, nutrient, p, per, phosphate, phosphorus, phytate, pig, plasma, research, response, starter, supplementation, treatment, uptake, utilization, weight
    Production challenge(s): Gut health
    Diets: Corn, broken rice, sorghum & wheat by products, Wheat, rye & triticale, Wheat, rye and tricale containing by-products, Mixed grain, Barley/Oats
    Brands: Axtra® PHY, Phyzyme® XP, Optimize Feed, Phycheck, FASTKit assay
    Resource ref: 8587
    This material is related to a conference
    Recently viewed

    Your single source for articles, publications & citations, product information and more...

    Much of the content on this site is freely available. Register now to receive email notifications based on your content preferences. Partners may also request access to the restricted area of the Knowledge Centre for technical product information such as trial data, reports and much more.

    Register for content notifications

    DuPont's Nutrition & Biosciences and IFF are coming together

    This isn't about forming another industry giant. This is about merging curiosity and capability to create unique, leading-edge solutions at the intersection of science and creativity.

    To learn more about IFF and the merger, go to www.iff.com.