Effect of vitamin E and fat source in sows' diets on immune response of suckling and weaned piglets
| Autor: | L, Babinszky, D J, Langhout, M W, Verstegen, L A, den Hartog, P, Joling, M, Nieuwland |
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| Rok vydání: | 1991 |
| Předmět: |
B-Lymphocytes
Immunity Cellular Immunodiffusion Swine Colostrum T-Lymphocytes Immunoglobulins Enzyme-Linked Immunosorbent Assay Weaning Lymphocyte Activation Dietary Fats Animals Suckling Leukocyte Count Milk Pregnancy Antibody Formation Animals Lactation Pregnancy Animal Vitamin E Female Muramidase |
| Zdroj: | Journal of animal science. 69(5) |
| ISSN: | 0021-8812 |
| Popis: | Thirty-six 7-mo-old gilts were used to study the effects of dietary vitamin E and fat source (5% sunflower oil or animal fat) in pregnant and lactating sow diets on serum vitamin E concentration and on cell-mediated and humoral immune response in suckling and weaned piglets. Six gilts each received one of six diets throughout pregnancy and lactation. The basal diets (13 mg alpha-tocopherol/kg diet) were supplemented with dl-alpha-tocopheryl acetate to 48 and 136 mg alpha-tocopherol/kg of feed (average analyzed values). After weaning (at 4 wk of age) all pigs received identical diets (20 mg of alpha-tocopherol/kg feed). One week after weaning, pigs were immunized (i.m. with ovalbumin and tetanus toxoid) and antibody production was measured. Blood samples were taken immediately after birth, at 1 wk after birth, at weaning, and at four weekly intervals after weaning. Samples were analyzed for alpha-tocopherol concentration, total number of leukocytes, T- and B-lymphocytes, lymphocyte stimulation with concanavalin A, lysozyme activity, and immunoglobulin concentrations. It was concluded that a high vitamin E level in the sow's diet increased serum vitamin E concentration of 1-wk-old pigs (P less than .05). Immune response against ovalbumin was increased (P less than .05) at 1 wk of age after immunization for weaned pigs from sows fed the high level of vitamin E. Also, the phagocytic measures of pigs at 1 wk of age were increased by the medium vitamin E level (P less than .05). Fat sources in the sow's diet had no consistent effect on the immunological measures of pigs. |
| Databáze: | OpenAIRE |
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