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Effect of α-tocopherol and dietary fat source on some blood and immunological variables in lactating sows

Published online by Cambridge University Press:  02 September 2010

L. Babinszky ,
D. J. Langhout ,
M. W. A. Verstegen ,
L. A. den Hartog ,
P. Joling  and
M. Nieuwland
L. Babinszky
Affiliation:
Department of Animal Nutrition, Agricultural University, Haagsteeg 4, 6708 PM Wageningen, The Netherlands Research Institute for Animal Nutrition, H-2053 Herceghalom, Hungary
D. J. Langhout
Affiliation:
Department of Animal Nutrition, Agricultural University, Haagsteeg 4, 6708 PM Wageningen, The Netherlands
M. W. A. Verstegen
Affiliation:
Department of Animal Nutrition, Agricultural University, Haagsteeg 4, 6708 PM Wageningen, The Netherlands
L. A. den Hartog
Affiliation:
Department of Animal Nutrition, Agricultural University, Haagsteeg 4, 6708 PM Wageningen, The Netherlands Research Institute for Pig Husbandry, PO Box 83, 5240 AB Rosmalen, The Netherlands
P. Joling
Affiliation:
Department of Animal Husbandry, Agricultural University, Marijkeweg 40, 6709 PG Wageningen, The Netherlands
M. Nieuwland
Affiliation:
Department of Animal Husbandry, Agricultural University, Marijkeweg 40, 6709 PG Wageningen, The Netherlands
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Abstract

Thirty-six 7-month-old gilts were used to study the effects of different levels of a-tocopherol (13, 48, 136 mg/kg food) and different source of fat (50 g/kg sunflower oil or animal fat) in gestation and lactation diets on α-tocopherol concentration in serum, colostrum and milk and on cell-mediated and humoral immune response of lactating sows.

Blood samples were taken from six sows per treatment after farrowing and at weaning (28 days of lactation) and were analysed for α-tocopherol concentration, total number of leucocytes and T- and B-lymphocyte counts. In blood lymphocyte stimulation with concanavaline, lysozyme activity and immunoglobulin concentration were also measured. In milk samples α-tocopherol and immunoglobulin concentration were determined at farrowing and at weaning. It was concluded that a high α-tocopherol level in the sow's diet including either sunflower oil or animal fat increased as expected the serum α-tocopherol concentration (P < 0·05) just after farrowing and at weaning. In colostrum the combination of high α-tocopherol with animal fat gave the highest (P < 0·05) α-tocopherol concentration. At weaning α-tocopherol in milk fat was highest in both fat groups with extra high α-tocopherol in the diet. The cell-mediated immunity of sows as tested were not systematically affected by α-tocopherol supplementation or fat addition to diet. However, the humoral immune system may be affected by the combinations of α-tocopherol and fat given.

Keywords

dietary fatimmune responselactationsowsα-tocopherol
Type
Research Article
Information
Animal Production , Volume 52 , Issue 2 , April 1991 , pp. 367 - 375
Copyright
Copyright © British Society of Animal Science 1991

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