Comparison of growth performance and zinc absorption, retention, and excretion in weanling pigs fed diets supplemented with zinc-polysaccharide or zinc oxide

Fifty weanling crossbred pigs averaging 6.2 kg of initial BW and 21 d of age were used in a 5-wk experiment to evaluate lower dietary concentrations of an organic source of Zn as a Zn-polysaccharide (Zn-PS) compared with 2,000 ppm of inorganic Zn as ZnO, with growth performance, plasma concentration...

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Bibliographic Details
Published in:Journal of animal science 2005-10, Vol.83 (10), p.2380-2386
Main Authors: Buff, C. E, Bollinger, D. W, Ellersieck, M. R, Brommelsiek, W. A, Veum, T. L
Format: Article
Language:English
Subjects:
Analysis of Variance
Animal Feed - analysis
animal growth
Animal Nutritional Physiological Phenomena
animal performance
Animal productions
Animals
Biological and medical sciences
blood chemistry
copper
Copper - blood
Diet - veterinary
Dietary Supplements
excretion
feed conversion
feed intake
feed supplements
Female
food animals
Fundamental and applied biological sciences. Psychology
liveweight gain
Male
nutrient balance
nutrient retention
nutrient uptake
Random Allocation
swine
Swine - growth & development
Swine - metabolism
Swine - physiology
Terrestrial animal productions
Vertebrates
weanlings
Weight Gain - drug effects
zinc
Zinc - administration & dosage
Zinc - blood
Zinc - pharmacokinetics
zinc oxide
Zinc Oxide - administration & dosage
Zinc Oxide - pharmacokinetics
zinc-polysaccharide
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Summary:Fifty weanling crossbred pigs averaging 6.2 kg of initial BW and 21 d of age were used in a 5-wk experiment to evaluate lower dietary concentrations of an organic source of Zn as a Zn-polysaccharide (Zn-PS) compared with 2,000 ppm of inorganic Zn as ZnO, with growth performance, plasma concentrations of Zn and Cu, and Zn and Cu balance as the criteria. The pigs were fed individually in metabolism crates, and Zn and Cu balance were measured on individual pigs (10 replications per treatment) from d 22 to 26. The basal Phase 1 (d 0 to 14) and Phase 2 (d 14 to 35) diets contained 125 or 100 ppm added Zn as Zn sulfate, respectively, and met all nutrient requirements. Treatments were the basal Phase 1 and 2 diets supplemented with 0, 150, 300, or 450 ppm of Zn as Zn-PS or 2,000 ppm Zn as ZnO. Blood samples were collected from all pigs on d 7, 14, and 28. For pigs fed increasing Zn as Zn-PS, there were no linear or quadratic responses (P [>/=] 0.16) in ADG, ADFI, or G:F for Phases 1 or 2 or overall. For single degree of freedom treatment comparisons, Phase 1 ADG and G:F were greater (P /=] 0.29) from pigs fed the diet containing ZnO. Pigs fed the diet containing ZnO also had a greater Phase 2 (P
ISSN:0021-8812
1525-3163
DOI:10.2527/2005.83102380x