Associations of peripartum markers of stress and inflammation with milk yield and reproductive performance in Holstein dairy cows

被引:52
作者
Huzzey, Juliana M. [1 ]
Mann, Sabine [2 ]
Nydam, Daryl V. [2 ]
Grant, Richard J. [3 ]
Overton, Thomas R. [1 ]
机构
[1] Cornell Univ, Dept Anim Sci, Ithaca, NY 14853 USA
[2] Cornell Univ, Coll Vet Med, Dept Populat Med & Diagnost Sci, Ithaca, NY 14853 USA
[3] William H Miner Agr Res Inst, Chazy, NY 12921 USA
基金
美国食品与农业研究所;
关键词
Cortisol; Fecal cortisol metabolites; Haptoglobin; Transition cow; FECAL CORTISOL METABOLITES; NONESTERIFIED FATTY-ACIDS; EARLY-LACTATION; HAPTOGLOBIN; PERIOD; SERUM; GLUCOCORTICOIDS; MECHANISMS; PARAMETER; DISEASES;
D O I
10.1016/j.prevetmed.2015.04.011
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
The objective was to evaluate the association of peripartum concentrations of fecal cortisol metabolites (11,17-dioxoandrostane; 11,17-DOA), plasma cortisol and haptoglobin (Hp), as well as two markers of negative energy balance, non-esterified fatty acid (NEFA) and postpartum beta-hydroxybutyrate (BHBA), with milk yield and reproductive performance. Blood and fecal samples were collected weekly from 412 Holstein dairy cows from wk -3 through wk +1 relative to calving. Pregnancies by 150 days in milk (DIM) and projected 305-d mature equivalent (305ME) milk yield based on the 3rd Dairy Herd Improvement (DHI) test day (mean +/- SD; 102 +/- 17 DIM) were measured. Multivariable linear regression models were used to describe the associations of metabolites with 305ME milk yield. Semiparametric proportional hazards models were used to describe associations of the same metabolites with risk of conception by 150 DIM. Negative associations with milk yield were found for prepartum Hp in wk -2, -1, and +1 relative to calving (estimate +/- SE: 490 +/- 251, 564 +/- 259, and 464 +/- 136 kg lower yield for every increase in Hp concentration by 1 g/L, respectively) as well as with NEFA concentration in wk -2 (estimate +/- SE: 1465 +/- 541 kg lower milk yield for an increase in NEFA concentration by 1 mEq/L). Postpartum associations of NEFA with milk yield depended on parity; NEFA was associated with an increase in milk yield in primiparous animals only (estimate +/- SE: 1548 +/- 510 kg increase for an increase in NEFA concentration by 1 mEq/L). An increase in plasma cortisol concentration by 1 mu g/dL in wk +1 relative to calving was associated with an increase in milk yield (estimate +/- SE: 580 +/- 176 kg). Prepartum 11,17-DOA was associated in all three prepartum sampling weeks with a reduced hazard ratio (HR) of conception (HR [95% CI]: 0.81 [0.670.97], 0.85 [0.720.99], and 0.85 [0.750.97] for every increase in concentration by 1 mg/g fecal dry matter (DM) in wk -3, -2, and -1 relative to calving, respectively). Increased cortisol concentrations in wk -3 and -1 relative to calving were associated with decreased hazard of conception in primiparous animals only (HR [95% CI]: 0.54 [0.320.92] and 0.59 [0.350.99], respectively. Increases in postpartum metabolites Hp and BHBA had a negative association with hazard of conception (HR [95% CI]: 0.81 [0.700.97], 0.74 [0.560.98], respectively). Biomarkers of inflammation and stress around calving may be useful to assess opportunities for improved milk yield and reproduction. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:291 / 297
页数:7
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