Superior growth performance in broiler chicks fed chelated compared to inorganic zinc in presence of elevated dietary copper
| Autor: | Junmei Zhao, Julia J. Dibner, Mercedes Vazquez-Anon, Paula Fisher, Frances Yan, Robert B. Shirley, Thomas R. Hampton, Joseph L. Evans, Karen Wedekind |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Dose titration Performance chemistry.chemical_element Zinc Growth Biology Biochemistry 03 medical and health sciences chemistry.chemical_compound Animal science medicine Chelation Antagonism Minerals Methionine Organic business.industry Broilers Research 0402 animal and dairy science Broiler 04 agricultural and veterinary sciences Factorial experiment 040201 dairy & animal science Biotechnology 030104 developmental biology chemistry Chelates Animal Science and Zoology Dietary Copper medicine.symptom business Weight gain Food Science |
| Zdroj: | Journal of Animal Science and Biotechnology |
| ISSN: | 2049-1891 1674-9782 |
| Popis: | Background The goal of this study was to compare the antagonism of elevated dietary Cu (250 mg/kg) from CuSO4 on three different Zn sources (ZnSO4 · H2O; [Zn bis(−2-hydroxy-4-(methylthio)butanoic acid)], Zn(HMTBa)2, a chelated Zn methionine hydroxy analogue; and Zn-Methionine), as measured using multiple indices of animal performance in ROSS 308 broilers. Methods Three experiments were conducted in broiler chicks fed a semi-purified diet. All birds were fed a Zn-deficient diet (8.5 mg/kg diet) for 1 wk, and then provided with the experimental diets for 2 wks. Results Experiment 1 was a 2 × 2 factorial design with two levels of Cu (8 vs. 250 mg/kg diet from CuSO4) and two Zn sources at 30 mg/kg [ZnSO4 · H2O vs. Zn(HMTBa)2]. Elevated Cu impaired growth performance only in birds fed ZnSO4. Compared to ZnSO4 · H2O, Zn(HMTBa)2 improved feed intake (12 %; P |
| Databáze: | OpenAIRE |
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