Effect of vitamin E supplementation on neutrophil function, milk composition and plasmin activity in dairy cows in a commercial herd

The Journal of Dairy Research
I PolitisA Baldi

Abstract

Fifty-six Holstein dairy cows from a commercial dairy herd in the Northern part of Greece were used to determine the effect of vitamin E supplementation on immune parameters, milk composition and milk quality. Cows were assigned to one of two experimental groups: control (no vitamin E supplementation) and vitamin E supplementation. Supplementation of vitamin E started 4 weeks prior to and continued up to 12 weeks after parturition. Supplementation included daily oral administration of vitamin E at 3000 i.u./cow prepartum and was reduced to 1000 i.u./cow post partum. Blood samples were collected weekly for 8 weeks starting 4 weeks before parturition, neutrophils were isolated and the following parameters were determined in neutrophils activated by phorbol myristate acetate: total cell-associated and membrane-bound urokinase plasminogen activator (u-PA) activity and superoxide production. Milk samples were collected weekly and fat, protein, lactose, somatic cell count (SCC), plasmin and plasminogen-derived activity were determined. Activated neutrophils isolated from cows that received supplemental vitamin E had higher (P<0.01) total and membrane-bound u-PA activities during the first 3 weeks after parturition and higher (P<0.01)...Continue Reading

Citations

Jul 1, 2007·Animal : an International Journal of Animal Bioscience·J L CapperL A Sinclair
Oct 4, 2012·Animal : an International Journal of Animal Bioscience·I Politis
Dec 6, 2014·Journal of Animal Physiology and Animal Nutrition·A AbueloC Castillo
Apr 12, 2014·Journal of Animal Physiology and Animal Nutrition·G ChandraR C Upadhyay
Dec 5, 2018·Journal of Animal Physiology and Animal Nutrition·Tarek K AbouzedMoustafa Shoukry
Aug 13, 2020·Animal Science Journal = Nihon Chikusan Gakkaihō·Emrobowansan M IdamokoroAnthony J Afolayan
Jun 30, 2009·Animal Health Research Reviews·Lorraine M SordilloStacey L Aitken
May 1, 2021·Animals : an Open Access Journal From MDPI·Satoshi HagaSanggun Roh

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