Responses of broilers to dietary zinc concentrations and sources in relation to environmental implications

British Poultry Science
A L BurrellT L Ward

Abstract

1. Since high concentrations of zinc are associated with reduced crop yields, environmental concerns are emerging regarding zinc accumulation in areas where poultry production is prevalent. This study investigates growth performance and zinc utilisation during the life cycle of broilers when diets were supplemented with various concentrations of zinc from two different sources. 2. A total of 740 Cobb 500 1-d-old male broiler chicks was randomly distributed into 88 battery cages. Excreta were collected over a 48-h period on d 10, 17, 24, 31, 38, and 45 to measure zinc excretion on a dry matter basis. 3. During the 45-d experimental period, broilers were given a maize-soybean meal basal diet (30 mg/kg zinc) supplemented with 0, 20, 40, and 80 mg/kg of zinc from zinc sulphate, Availa Zn amino acid complex, or an equal combination of zinc sulphate and Availa Zn amino acid complex. 4. Progressive additions of zinc to the basal diet significantly increased body weight gain of broilers, but did not affect feed conversion or mortality. Optimum body weight gain was achieved at 80 mg/kg supplemental zinc, which exceeds the NRC recommendations of 40 mg/kg. 5. During each excreta collection period, increased supplemental zinc concentration...Continue Reading

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Citations

Jul 1, 2007·Animal : an International Journal of Animal Bioscience·C JondrevilleY Nys
Apr 15, 2010·British Poultry Science·Y M BaoK Bruerton
Oct 28, 2017·Poultry Science·K M MartinS E Purdum
Oct 31, 2017·Biological Trace Element Research·Mohamed E Abd El-HackMohamed F A Farghly
Feb 5, 2019·Environmental Science and Pollution Research International·Azza HafezElsayed Hegazi
May 10, 2017·Animal Health Research Reviews·U GaddeHyun S Lillehoj
May 29, 2016·Biological Trace Element Research·Małgorzata KwiecieńRenata Klebaniuk
Jan 21, 2020·Journal of Animal Science·Jill R NelsonGregory S Archer
Jun 19, 2019·Asian-Australasian Journal of Animal Sciences·Cecep HidayatElizabeth Wina
Jun 15, 2012·Animal Science Journal = Nihon Chikusan Gakkaihō·Xiaojun YangYajing Sun
Apr 21, 2018·Biological Trace Element Research·Łukasz JaroszMałgorzata Kwiecień
Nov 19, 2020·Journal of Animal Science·Gavin M BoerboomJavier Martín-Tereso

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