Characterisation of physiological and immunological responses in beef cows to abrupt weaning and subsequent housing.

BMC Veterinary Research
E M LynchS Doyle

Abstract

Weaning involves the permanent separation of the calf from the dam and has been shown to be stressful for both. The objectives of this study were to characterise the effect of i) abrupt weaning and ii) subsequent housing on the extended physiological and immunological responses of beef cows. At weaning (day (d) 0, mean age of calf (s.d.) 212 (24.5) d), cows were abruptly separated from their calves and returned to the grazing area. After 35 d at pasture, cows were housed in a slatted floor shed and offered grass silage ad libitum plus a mineral-vitamin supplement daily. Rectal body temperature was recorded and blood samples were obtained on i) d 0 (weaning), 2, 7, 14, 21, 28, 35 and subsequently on ii) d 0 (housing), 2, 7, 14 and 21 for physiological, haematological and immunological measurements. Post-weaning, concentration of cortisol and dehydroepiandrosterone were unchanged (P > 0.05). Rectal body temperature, neutrophil number and neutrophil: lymphocyte ratio increased (P < 0.01) on d 2 compared with pre-weaning baseline. Lymphocyte and neutrophil number decreased (P < 0.05) on d 2 to 7 and d 7 to 21, respectively, compared with pre-weaning baseline. Interferon-gamma production decreased (P < 0.05) on d 2 compared with pre...Continue Reading

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Citations

Mar 24, 2012·Animal : an International Journal of Animal Bioscience·R UngerfeldG Quintans
May 17, 2011·Acta Veterinaria Scandinavica·Daniel EnríquezRodolfo Ungerfeld
Oct 25, 2011·Irish Veterinary Journal·Ingrid LorenzSimon J More
Aug 30, 2014·Research in Veterinary Science·L Starvaggi CucuzzaF T Cannizzo
Jan 15, 2013·Veterinary Immunology and Immunopathology·Amanda A Adams, David W Horohov
Oct 19, 2016·Animal : an International Journal of Animal Bioscience·R UngerfeldM J Hötzel
Aug 21, 2018·Animal Science Journal = Nihon Chikusan Gakkaihō·Peipei LiuLuming Ding
Sep 3, 2020·Journal of Applied Animal Welfare Science : JAAWS·Noriaki NakajimaMasato Yayota
Apr 6, 2017·Journal of Animal Science·I StěhulováM Špinka
Nov 17, 2020·Frontiers in Veterinary Science·Gianfranco GabaiLieta Marinelli

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BETA
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