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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Jahanian, R. Rasouli, E. |
| Description | Country affiliation: Iran Author Affiliation: Jahanian R ( Department of Animal Sciences, College of Agriculture, Isfahan University of Technology, Isfahan, Iran.) |
| Abstract | This study was designed to evaluate the effects of dietary inclusion of zinc-methionine (ZnMet) as a replacement for conventional inorganic zinc sources on performance, tissue zinc accumulation and some plasma indices in broiler chicks. A total of 450-day-old Ross male broiler chicks were randomly assigned to five pen replicates of nine experimental diets. Dietary treatments consisted of two basal diets supplemented with 40 mg/kg added Zn as feed-grade Zn sulphate or Zn oxide in which, Zn was replaced with that supplied from ZnMet complex by 25, 50, 75 or 100%. At 42 days of age, three randomly selected birds from each pen were bled to measure plasma metabolites; then, the chicks were slaughtered to evaluate carcass characteristics. Results showed that dietary treatments affected (p < 0.05) feed intake during the starter period, and chicks on Zn oxide diets consumed more feed than sulphate counterparts. Furthermore, dietary substitution of inorganic Zn sources by ZnMet caused improvements (p < 0.01) in body weight gain during all experimental periods. Dietary supplementation of ZnMet improved feed conversion efficiency during 1-21 and 1-42, but not in 21-42 days of age. Complete replacement of inorganic Zn by that supplied from ZnMet caused an increase (p < 0.05) in relative liver weight. Similarly, dietary inclusion of ZnMet increased breast meat and carcass yields and reduced abdominal fat percentage (p < 0.05). Incremental levels of ZnMet increased (p < 0.05) zinc concentrations in liver and thymus, and the highest zinc accumulations were seen in 100% ZnMet-supplemented birds. Interestingly, introduction of ZnMet into the diets partially in place of inorganic sources resulted in decreases (p < 0.01) in plasma uric acid and triglycerides concentrations. The present findings indicated that dietary ZnMet inclusion in replacement of inorganic sources in addition to improving growth performance, reduced plasma uric acid and triglycerides concentrations, consequently decreased abdominal fat pad and increased carcass meat yield. |
| File Format | HTM / HTML |
| ISSN | 09312439 |
| Issue Number | 1 |
| Volume Number | 99 |
| e-ISSN | 14390396 |
| Journal | Journal of Animal Physiology and Animal Nutrition |
| Language | English |
| Publisher | Wiley-Blackwell |
| Publisher Date | 2015-02-01 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Physiology Discipline Veterinary Medicine Discipline Nutritional Sciences Animal Feed Analysis Chickens Metabolism Diet Veterinary Methionine Analogs & Derivatives Organometallic Compounds Pharmacology Zinc Animal Nutritional Physiological Phenomena Animals Blood Growth & Development Male Administration & Dosage Chemistry Journal Article Randomized Controlled Trial |
| Content Type | Text |
| Resource Type | Article |
| Subject | Animal Science and Zoology Food Animals |
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