PMID: 11931096Apr 5, 2002Paper

Moderate summer heat stress does not modify immunological parameters of Holstein dairy cows

International Journal of Biometeorology
N LaceteraA Nardone

Abstract

The study was undertaken during spring and summer months in a territory representative of the Mediterranean climate to assess the effects of season on some immunological parameters of dairy cows. Twenty Holstein cows were used. Eleven of those cows gave birth during spring; the remaining nine cows gave birth in summer. The two groups of cows were homogeneous for parity. Values of air temperatures and relative humidity were recorded both during spring and summer, and were utilized to calculate the temperature humidity index (THI). One week before the expected calving, rectal temperatures and respiratory rates of the cows were recorded (1500 hours), and cell-mediated immunity was assessed by measuring the proliferation of mitogen-stimulated peripheral blood mononuclear cells (PBMC). Within 3 h of calving, one colostrum sample was taken from each cow and analysed to determine content of immunoglobulin (Ig) G1, IgG2, IgM and IgA. At 48 h after birth, passive immunization of the calves was assessed by measuring total serum IgG. During summer, daytime (0900-2000 hours) THI values were above the upper critical value of 72 [75.2, (SD 2.6)] indicating conditions that could represent moderate heat stress. That THI values were able to pre...Continue Reading

Citations

Jul 2, 2005·International Journal of Biometeorology·Nicola LaceteraAlessandro Nardone
Mar 30, 2010·Cell Stress & Chaperones·Elisabetta CatalaniNicola Lacetera
Aug 7, 2013·Animal : an International Journal of Animal Bioscience·E MerlotA Prunier
May 24, 2012·Veterinary Medicine International·Zahoor Ahmad Pampori, Sujata Pandita
Sep 8, 2009·Domestic Animal Endocrinology·B C do AmaralG E Dahl
Jun 19, 2013·Animal Science Journal = Nihon Chikusan Gakkaihō·De-Yi LiuLiang-Ting Zhong
Dec 23, 2017·Asian-Australasian Journal of Animal Sciences·Won Seob KimHong Gu Lee
May 3, 2020·Animals : an Open Access Journal From MDPI·Alfredo M F PereiraEvaldo A L Titto
Mar 27, 2020·Frontiers in Veterinary Science·Geoffrey E DahlJimena Laporta
Aug 25, 2019·Research in Veterinary Science·M BagathV Sejian

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