Simple Summary Dairy cows undergo physiological changes around calving as they shift from non-lactating and pregnant to lactating. Heat stress during this time intensifies these challenges by reducing intakes, weakening the immune system, lowering fertility, and decreasing milk production. As global temperatures rise,...
B. D. Davidson, M. Guenther, Julie Duclos et al.· Animals· 0 citations
Early-life management, including nutrition and environmental modifications, can shape calf health and performance. We examined the effects of 2 different milk replacer (MR) feeding programs with and without heat abatement in Holstein heifers during a subtropical summer. Holstein dairy heifers (n = 167, BW = 36.6 ± 0.6...
C. G. Savegnago, Y. B. Amancio, J. Gao et al.· Journal of Dairy Science· 0 citations
Late gestation heat stress in dairy cows reduces offspring's capacity to absorb colostrum immunoglobulin G (IgG). This study evaluated small intestine histomorphology, cellular turnover, and gene expression profiles of in utero heat stressed versus in utero cooled heifers at birth. For the last 54 ± 5 d of gestation, p...
M. Guenther, B. D. Davidson, L. Cangiano et al.· Journal of Dairy Science· 0 citations
Development of the mammary gland begins
in utero
and requires coordinated interactions between the epithelial rich parenchyma and the surrounding mammary fat pad (mFP). In this study we investigated how maternal heat stress (HS) during gestation impacts the development of the offspring mFP. Mammary fat pad tissue...
M. Guenther, B. Dado-Senn, M. Myers et al.· Scientific Reports· 0 citations
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