title: Effect of Zinc Source on Hematological, Metabolic Parameters and Mineral Balance in Lambs.
abstract: This experiment was conducted to study the effects of different sources of zinc (Zn) on blood metabolites and balances of some minerals in lambs. In the first part, 20 6-7-month-old lambs were randomly allotted to four treatments including (1) basal diet containing 22.47 mg Zn/kg DM without supplementary Zn (control), (2) basal diet + 40 mg Zn/kg DM as ZnSO4 (ZnSO4 40), (3) basal diet + 20 mg Zn/kg DM as Zn-proteinate (Zn-Pro 20), and (4) basal diet + 40 mg Zn/kg DM as Zn-proteinate (Zn-Pro 40). Blood samples were taken on days 0, 28, and 65 before morning feeding. In the second part, four lambs from each treatment were randomly transferred to metabolic cages to evaluate the effects of different sources of Zn on N, Zn, Fe, and Cu retentions. This trial consisted of 18 days, with the first 12 days as the adaptation period followed by 6 days of sample collection. The results of this study showed that the source of Zinc had no significant effect on the analyzed parameters. Average daily gain and feed efficiency were improved by Zn supplementation (P < 0.05). Daily feed intake, plasma glucose, Fe and Cu concentrations, serum total antioxidant capacity, red blood cell count, packed cell volume, and hemoglobin concentration did not differ significantly between treatments (P > 0.05). Plasma Zn concentration, alkaline phosphatase (ALP) and bone-specific alkaline phosphatase (BALP) activity, and white blood cell and lymphocyte count differed significantly between control and Zn-supplemented groups (P < 0.05) as Zn supplementation improved these parameters. Nitrogen, Fe, and Cu retentions did not differ between treatments (P > 0.05). Zinc retention showed a significant difference between control and Zn-supplemented groups (P < 0.05), but there were no significant differences among the Zn-supplemented groups. The results of this study show that Zn supplementation improved performance and zinc retention in lambs. However, there were no significant differences between zinc sources used in this study.
authors.affiliation: Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Islamic Republic of Iran. h_aliarabi@yahoo.com.
authors.forename: Hassan
authors.initials: H
authors.lastname: Aliarabi
authors.affiliation: Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Islamic Republic of Iran.
authors.forename: Amir
authors.initials: A
authors.lastname: Fadayifar
authors.affiliation: Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Islamic Republic of Iran.
authors.forename: Mohammad Mehdi
authors.initials: MM
authors.lastname: Tabatabaei
authors.affiliation: Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Islamic Republic of Iran.
authors.forename: Pouya
authors.initials: P
authors.lastname: Zamani
authors.affiliation: Department of Veterinary Medicine, Faculty of Paraveterinary Sciences, Bu-Ali Sina University, Hamedan, Islamic Republic of Iran.
authors.forename: Aliasghar
authors.initials: A
authors.lastname: Bahari
authors.affiliation: Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Islamic Republic of Iran.
authors.forename: Abbas
authors.initials: A
authors.lastname: Farahavar
authors.affiliation: Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Islamic Republic of Iran.
authors.forename: Amir Hossein
authors.initials: AH
authors.lastname: Dezfoulian
mesh_terms: D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena / Q000187:drug effects; D000818:Animals; D000975:Antioxidants / Q000378:metabolism; D001772:Blood Cell Count; D001786:Blood Glucose / Q000378:metabolism; D003300:Copper / Q000097:blood; D004032:Diet; D007501:Iron / Q000097:blood; D008297:Male; D008903:Minerals / Q000097:blood / Q000378:metabolism*; D012756:Sheep; D014882:Water-Electrolyte Balance / Q000502:physiology*; D015430:Weight Gain; D015032:Zinc / Q000737:chemistry / Q000378:metabolism*
chemical_list: D000975:Antioxidants; D001786:Blood Glucose; D008903:Minerals; D003300:Copper; D007501:Iron; D015032:Zinc
keywords: Growth; Lamb; Mineral retention; Zinc source