Dietary zinc-methionine enhances mononuclear-phagocytic function in young turkeys |
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Authors: | M T Kidd M A Qureshi P R Ferket L N Thomas |
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Institution: | 1. Department of Poultry Science, North Carolina State University, 27695-7608, Raleigh, NC 2. Interdepartmental Nutrition Program, North Carolina State University, 27695-7608, Raleigh, NC
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Abstract: | The ability of dietary zinc-methionine (Zn-Met) to enhance mononuclear-phagocytic function againstSalmonella arizona andenteritids was investigated in young turkeys. Feed/gain and body wt gain at 21 d of age were not affected by Zn-Met. The addition of
30 or 45 ppm Zn from Zn-Met to a Zn adequate diet significantly increased cutaneous basophil hypersensitivity to phytohemagglutinin-P.
The clearance of intravenously administeredS. enteritidis from blood was not affected by 30 ppm of supplemental Zn from Zn-Met. However, 30 ppm Zn from Zn-Met increased the reduction
of intravenously administeredS. arizona from spleen. Percentages of myeloid and mononuclear-phagocytic cells before and afterS. enteritidis infection were not affected by supplemental Zn-Met. Turkeys supplemented with Zn-Met showed enhanced in vitro phagocytosis
ofS. enteritidis by Sephadex-elicited abdominal exudate cells. The phagocytosis ofS. arizona was unaffected by Zn-Met. |
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Keywords: | Index Entries" target="_blank">Index Entries Zinc-methionine macrophage phagocytosis Salmonella phytohemagglutinin-P cellular immunity turkey |
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