Effects of substituting deproteinized whey and(or) crystalline lactose for dried whey on weanling pig performance

Journal of Animal Science
W B NessmithJ R Bergstrom

Abstract

We conducted two trials to determine the effects of replacing the lactose provided by spray-dried, edible-grade whey with edible-grade deproteinized whey or crystalline lactose on pig performance. In Exp. 1, 180 weanling pigs (initially 4.1 kg and 22 +/- 4 d of age) were allotted randomly to dietary treatments containing 18% lactose supplied by 1) 25% dried whey, 2) 12.5% dried whey and 9% crystalline lactose, 3) 18% crystalline lactose, 4) 12.5% dried whey and 10.9% deproteinized whey, or 5) 21.7% deproteinized whey. Casein was used to replace the lysine provided by dried whey in diets containing lactose and deproteinized whey. From d 0 to 14 after weaning, no differences (P > .10) were observed in ADG or ADFI. Pigs fed diets containing 18% crystalline lactose or 21% deproteinized whey had a higher (P < .05) gain:feed ratio (G/F) than did pigs fed diets containing 25% dried whey or 12.5% dried whey and 9% lactose. In addition, pigs fed diets containing 21% deproteinized whey had increased G/F compared to pigs fed the diet containing 10.9% deproteinized whey and 12.5% dried whey. In Exp. 2, 344 pigs (initially 4.4 kg and 14 +/- 2 d of age) were fed dietary treatments based on four sources of crystalline lactose replacing the la...Continue Reading

Citations

Oct 18, 2007·Journal of Animal Science·G L CromwellD C Mahan
Feb 2, 2010·Journal of Animal Science·V D NaranjoL L Southern
Apr 13, 2010·Journal of Animal Science·V D NaranjoL L Southern
Feb 8, 2011·Journal of Animal Science·M C ShieldsC S Stark
Dec 25, 2007·The Journal of Nutrition·Camilla HoppeKim F Michaelsen

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