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Risk factors for clinical ketosis and association with milk production and reproduction variables in dairy cows in a hot environment.
Trop Anim Health Prod. 2018 Oct; 50(7):1611-1616.TA

Abstract

The aims of the present study were to investigate (1) the risk factors that influence the occurrence of clinical ketosis (CK; blood β-hydroxybutyrate > 3.0 mmol/L) and (2) to determine the influence of subclinical ketosis (SCK; 1.2 ≤ β-hydroxybutyrate ≤ 2.9 mmol/L) and CK on reproductive performance and milk yield in high-yielding Holstein cows in a hot environment. Cows (n = 345) were blood sampled from 6 to 15 days postpartum for β-hydroxybutyrate (BHB) determination with a hand-held meter. Cows calving in spring had 3.7 increased odds of having CK (20.7% incidence) than cows calving in summer (3.9% incidence) and autumn (9.4% incidence). Temperature-humidity index < 83 was associated with 1.6 times higher risk for CK compared with cows calving in warmer days. First-service conception rate was 12 and 16 percentage point higher (P < 0.05) in nonketotic cows compared with cows with SCK and CK, respectively. Actual 305-day milk yields for healthy, SCK, and CK cows were 9991 ± 1411, 10,123 ± 1442, and 10,386 ± 1435 kg (mean ± SD), respectively, with no difference (P > 0.05) between groups. In conclusion, this study documented that ketosis was seasonal with lower incidence of this metabolic disease during hot seasons and with increased ambient temperature at calving. Also, 305-day milk yield of Holstein cows was not related to blood BHB content early in lactation in this hot environment. However, elevated circulating BHB was negatively associated with conception rate at first service and fetal losses.

Authors+Show Affiliations

Department of Animal Nutrition, Autonomous Agrarian University Antonio Narro, 25315, Saltillo, Mexico.Department of Veterinary Science, Autonomous Agrarian University Antonio Narro, 27054, Torreon, Mexico.Department of Veterinary Science, Autonomous Agrarian University Antonio Narro, 27054, Torreon, Mexico.Institute of Agriculture Science, Autonomous University of Baja California, 21705, Mexicali, Mexico.Institute of Agriculture Science, Autonomous University of Baja California, 21705, Mexicali, Mexico.Department of Animal Nutrition, Autonomous Agrarian University Antonio Narro, 25315, Saltillo, Mexico. edugarmartz@gmail.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29717378

Citation

Mellado, M, et al. "Risk Factors for Clinical Ketosis and Association With Milk Production and Reproduction Variables in Dairy Cows in a Hot Environment." Tropical Animal Health and Production, vol. 50, no. 7, 2018, pp. 1611-1616.
Mellado M, Dávila A, Gaytán L, et al. Risk factors for clinical ketosis and association with milk production and reproduction variables in dairy cows in a hot environment. Trop Anim Health Prod. 2018;50(7):1611-1616.
Mellado, M., Dávila, A., Gaytán, L., Macías-Cruz, U., Avendaño-Reyes, L., & García, E. (2018). Risk factors for clinical ketosis and association with milk production and reproduction variables in dairy cows in a hot environment. Tropical Animal Health and Production, 50(7), 1611-1616. https://doi.org/10.1007/s11250-018-1602-y
Mellado M, et al. Risk Factors for Clinical Ketosis and Association With Milk Production and Reproduction Variables in Dairy Cows in a Hot Environment. Trop Anim Health Prod. 2018;50(7):1611-1616. PubMed PMID: 29717378.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Risk factors for clinical ketosis and association with milk production and reproduction variables in dairy cows in a hot environment. AU - Mellado,M, AU - Dávila,A, AU - Gaytán,L, AU - Macías-Cruz,U, AU - Avendaño-Reyes,L, AU - García,E, Y1 - 2018/05/02/ PY - 2018/01/13/received PY - 2018/04/19/accepted PY - 2018/5/3/pubmed PY - 2018/12/12/medline PY - 2018/5/3/entrez KW - Conception rate KW - Milk yield KW - Services per pregnancy KW - Subclinical ketosis KW - β-hydroxybutyrate SP - 1611 EP - 1616 JF - Tropical animal health and production JO - Trop Anim Health Prod VL - 50 IS - 7 N2 - The aims of the present study were to investigate (1) the risk factors that influence the occurrence of clinical ketosis (CK; blood β-hydroxybutyrate > 3.0 mmol/L) and (2) to determine the influence of subclinical ketosis (SCK; 1.2 ≤ β-hydroxybutyrate ≤ 2.9 mmol/L) and CK on reproductive performance and milk yield in high-yielding Holstein cows in a hot environment. Cows (n = 345) were blood sampled from 6 to 15 days postpartum for β-hydroxybutyrate (BHB) determination with a hand-held meter. Cows calving in spring had 3.7 increased odds of having CK (20.7% incidence) than cows calving in summer (3.9% incidence) and autumn (9.4% incidence). Temperature-humidity index < 83 was associated with 1.6 times higher risk for CK compared with cows calving in warmer days. First-service conception rate was 12 and 16 percentage point higher (P < 0.05) in nonketotic cows compared with cows with SCK and CK, respectively. Actual 305-day milk yields for healthy, SCK, and CK cows were 9991 ± 1411, 10,123 ± 1442, and 10,386 ± 1435 kg (mean ± SD), respectively, with no difference (P > 0.05) between groups. In conclusion, this study documented that ketosis was seasonal with lower incidence of this metabolic disease during hot seasons and with increased ambient temperature at calving. Also, 305-day milk yield of Holstein cows was not related to blood BHB content early in lactation in this hot environment. However, elevated circulating BHB was negatively associated with conception rate at first service and fetal losses. SN - 1573-7438 UR - https://www.unboundmedicine.com/medline/citation/29717378/Risk_factors_for_clinical_ketosis_and_association_with_milk_production_and_reproduction_variables_in_dairy_cows_in_a_hot_environment_ L2 - https://dx.doi.org/10.1007/s11250-018-1602-y DB - PRIME DP - Unbound Medicine ER -