Associations of pre- and postpartum lying time with metabolic, inflammation, and health status of lactating dairy cows

Journal of Dairy Science
J M PiñeiroG M Schuenemann

Abstract

The objective was to evaluate the associations of pre- and postpartum lying time (LT) with serum total calcium (Ca), nonesterified fatty acids (NEFA), β-hydroxybutyrate (BHB), and haptoglobin concentrations, hemogram, and health status of dairy cows. A total of 1,052 Holstein cattle (401 nulliparous heifers and 651 parous cows) from 3 commercial dairy farms were fitted with electronic data loggers (IceQube, IceRobotics, Edinburgh, UK) on a hind leg 14 ± 3 d before parturition (dpp) and removed at 14 ± 3 d in milk (DIM) to assess their LT. Lying time data were summarized and reported daily (min/d or h/d). Serum concentrations of NEFA (at 14 ± 3 and 7 ± 3 dpp), total serum calcium within 48 h after calving, and BHB (at 7 ± 3 and 14 ± 3 DIM) were determined. Serum concentration of haptoglobin was determined and a hemogram was performed on a subsample of 577 cows (237 primiparous and 340 multiparous) at 7 ± 3 DIM. Cases of milk fever, retained placenta, metritis, mastitis, pneumonia, and digestive disorders within 30 DIM were recorded and cows were categorized into 1 of 4 groups: (1) nondiseased (ND, n = 613; cows without ketosis and any other health conditions); (2) cows with only ketosis (KET, n = 152); (3) sick cows experiencing...Continue Reading

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Citations

Aug 19, 2020·Asian-Australasian Journal of Animal Sciences·Mingming JiangDasen Liu
Apr 4, 2021·Animals : an Open Access Journal From MDPI·María D Contreras-AguilarCamila P Rubio
Jul 3, 2021·Animals : an Open Access Journal From MDPI·Pengtao LiClive J C Phillips
Aug 23, 2021·Journal of Dairy Science·R Held-MontaldoP Sepúlveda-Varas

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