Effects of standardized total tract digestible phosphorus on growth performance of 11- to 23-kg pigs fed diets with or without phytase1,2

Journal of Animal Science
Carine M VierJ C Woodworth

Abstract

Two experiments were conducted to determine the standardized total tract digestible phosphorus (STTD P) requirement for 11- to 23-kg nursery pigs fed diets with or without phytase. A total of 1,080 and 2,140 pigs (PIC 359 × Camborough, Hendersonville, TN; initially 11.4 ± 0.29 and 11.1 ± 0.24 kg) were used in Exp. 1 and Exp. 2, respectively. There were 23 to 27 pigs per pen with 6 and 12 replicate pens per treatment in Exp. 1 and Exp. 2, respectively. After weaning, pigs were fed a common pelleted diet with 0.45% STTD P for 7 d, and a common phase 2 meal diet with 0.40% STTD P for 14 d in Exp. 1 and 18 d in Exp. 2. Pens of pigs were then allotted to dietary treatments in a randomized complete block design with body weight (BW) as the blocking factor. In Exp. 1, dietary treatments consisted of 0.26%, 0.30%, 0.33%, 0.38%, 0.43%, 0.48%, and 0.53% STTD P. Treatments were achieved with the inclusion of monocalcium phosphate at the expense of corn. In Exp. 2, diets contained 1,000 phytase units (FYT; Ronozyme Hiphos 2500, DSM Nutritional Products, Inc., Parsippany, NJ) with assumed release value 0.132% STTD P, and treatments consisted of 0.30%, 0.33%, 0.38%, 0.43%, 0.48%, 0.53%, and 0.58% STTD P. These STTD P concentrations included ...Continue Reading

References

Aug 11, 2001·American Journal of Veterinary Research·B B Smith, R J Van Saun
Apr 14, 2005·Journal of Animal Science·T W Kim, X G Lei
Feb 7, 2009·Physiology·Theresa Berndt, Rajiv Kumar
Sep 21, 2013·Journal of Animal Science·H Zhai, O Adeola
Jul 23, 2014·Asian-Australasian Journal of Animal Sciences·J C González-Vega, H H Stein

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Citations

Mar 17, 2020·The British Journal of Nutrition·Maciej M MisiuraIlias Kyriazakis

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