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Blood β-hydroxybutyrate concentrations and early lactation management strategies on pasture-based dairy farms in Colombia.
Prev Vet Med 2020; 174:104855PV

Abstract

The increasing global demand for food requires sustainable solutions to close the gap in agricultural yield between industrialized and non-industrialized countries. Our objectives in this cross-sectional study were to: 1) characterize farm populations, milk yield, and early lactation management strategies of dairy cows in three different regions of Colombia, and 2) determine the association of these management strategies with blood β-hydroxybutyrate (BHB) concentrations in the first 42 days in milk (DIM). Dairy herds (n = 56) in the Antioquia, Caldas, and Cundinamarca regions of Colombia were visited once from May through July 2018. A survey was administered to farm owners to collect demographic, management, and herd nutrition information. Blood samples from dairy cows (n = 880) between calving and 42 DIM were used to measure blood BHB concentration. Associations between management and nutritional strategies and blood BHB concentration were examined using mixed models. Prevalence of hyperketonemia was calculated as the number of samples with BHB concentration ≥1.2 mmol/L divided by the total number of samples. The estimated diet composition for early lactation dairy cows was 65.5% pasture and 31.8% commercial concentrates. The farm median milk yield, protein concentration, and fat concentration were 21.0 kg (range = 13.1-36 kg), 3.2% (range = 2.7-4.1%), and 3.5% (range = 3.0-4.1%), respectively. Milk yield least squares means (95% confidence interval; CI) differed by region: 21.7 (20.3, 23.2), 18.5 (17.0, 20.2), and 20.3 (18.5, 22.4) kg in Antioquia, Caldas, and Cundinamarca, respectively. Median blood BHB concentration was 0.5 and ranged from 0.1-4.4 mmol/L; blood BHB concentration was not different among the three regions. Pasture fertilization, increased parity, and BCS were associated with changes in blood BHB concentration. The overall prevalence of hyperketonemia was 4.5%. Geographical region affected the prevalence of hyperketonemia at 2.5%, 4.0%, and 10.2% in Antioquia, Caldas, and Cundinamarca, respectively. Mean stocking density (95% CI) was greater in Cundinamarca than Antioquia or Caldas at 3.3 (2.2, 5.0), 2.8 (2.1, 3.9) and 1.7 (1.2, 2.6) animals per ha, respectively, and was associated with hyperketonemia prevalence. Farms that abruptly stop milking cows at dry-off had 80% of the hyperketonemia events in the study. Pasture-based dairies in Colombia had lower blood BHB concentrations and estimated milk yield compared with confined production systems in temperate zones. However, geographical region, stocking density, and abrupt cessation of milking at dry-off were associated with prevalence of hyperketonemia in pasture-based dairies.

Authors+Show Affiliations

Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA. Electronic address: fal43@cornell.edu.Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA.Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA.Faculty of Agricultural Research Sciences, CLEV Research Group, Universidad De Caldas, Manizales, Colombia.Faculty of Agricultural Research Sciences, CLEV Research Group, Universidad De Caldas, Manizales, Colombia.Charles H. Dyson School of Applied Economics and Management, Cornell University, Ithaca, NY, 14853, USA.Charles H. Dyson School of Applied Economics and Management, Cornell University, Ithaca, NY, 14853, USA.Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31864169

Citation

Leal Yepes, Francisco A., et al. "Blood Β-hydroxybutyrate Concentrations and Early Lactation Management Strategies On Pasture-based Dairy Farms in Colombia." Preventive Veterinary Medicine, vol. 174, 2020, p. 104855.
Leal Yepes FA, Mann S, Martens EM, et al. Blood β-hydroxybutyrate concentrations and early lactation management strategies on pasture-based dairy farms in Colombia. Prev Vet Med. 2020;174:104855.
Leal Yepes, F. A., Mann, S., Martens, E. M., Velasco-Bolaños, J., Ceballos-Marquez, A., Puerto, S., ... McArt, J. A. A. (2020). Blood β-hydroxybutyrate concentrations and early lactation management strategies on pasture-based dairy farms in Colombia. Preventive Veterinary Medicine, 174, p. 104855. doi:10.1016/j.prevetmed.2019.104855.
Leal Yepes FA, et al. Blood Β-hydroxybutyrate Concentrations and Early Lactation Management Strategies On Pasture-based Dairy Farms in Colombia. Prev Vet Med. 2020;174:104855. PubMed PMID: 31864169.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Blood β-hydroxybutyrate concentrations and early lactation management strategies on pasture-based dairy farms in Colombia. AU - Leal Yepes,Francisco A, AU - Mann,Sabine, AU - Martens,Elizabeth M, AU - Velasco-Bolaños,Juan, AU - Ceballos-Marquez,Alejandro, AU - Puerto,Sergio, AU - Gómez,Miguel I, AU - McArt,Jessica A A, Y1 - 2019/11/20/ PY - 2019/05/25/received PY - 2019/11/03/revised PY - 2019/11/19/accepted PY - 2019/12/22/pubmed PY - 2019/12/22/medline PY - 2019/12/22/entrez KW - Colombia KW - Dairy cow KW - Hyperketonemia KW - Management KW - Pasture-Based KW - β-hydroxybutyrate SP - 104855 EP - 104855 JF - Preventive veterinary medicine JO - Prev. Vet. Med. VL - 174 N2 - The increasing global demand for food requires sustainable solutions to close the gap in agricultural yield between industrialized and non-industrialized countries. Our objectives in this cross-sectional study were to: 1) characterize farm populations, milk yield, and early lactation management strategies of dairy cows in three different regions of Colombia, and 2) determine the association of these management strategies with blood β-hydroxybutyrate (BHB) concentrations in the first 42 days in milk (DIM). Dairy herds (n = 56) in the Antioquia, Caldas, and Cundinamarca regions of Colombia were visited once from May through July 2018. A survey was administered to farm owners to collect demographic, management, and herd nutrition information. Blood samples from dairy cows (n = 880) between calving and 42 DIM were used to measure blood BHB concentration. Associations between management and nutritional strategies and blood BHB concentration were examined using mixed models. Prevalence of hyperketonemia was calculated as the number of samples with BHB concentration ≥1.2 mmol/L divided by the total number of samples. The estimated diet composition for early lactation dairy cows was 65.5% pasture and 31.8% commercial concentrates. The farm median milk yield, protein concentration, and fat concentration were 21.0 kg (range = 13.1-36 kg), 3.2% (range = 2.7-4.1%), and 3.5% (range = 3.0-4.1%), respectively. Milk yield least squares means (95% confidence interval; CI) differed by region: 21.7 (20.3, 23.2), 18.5 (17.0, 20.2), and 20.3 (18.5, 22.4) kg in Antioquia, Caldas, and Cundinamarca, respectively. Median blood BHB concentration was 0.5 and ranged from 0.1-4.4 mmol/L; blood BHB concentration was not different among the three regions. Pasture fertilization, increased parity, and BCS were associated with changes in blood BHB concentration. The overall prevalence of hyperketonemia was 4.5%. Geographical region affected the prevalence of hyperketonemia at 2.5%, 4.0%, and 10.2% in Antioquia, Caldas, and Cundinamarca, respectively. Mean stocking density (95% CI) was greater in Cundinamarca than Antioquia or Caldas at 3.3 (2.2, 5.0), 2.8 (2.1, 3.9) and 1.7 (1.2, 2.6) animals per ha, respectively, and was associated with hyperketonemia prevalence. Farms that abruptly stop milking cows at dry-off had 80% of the hyperketonemia events in the study. Pasture-based dairies in Colombia had lower blood BHB concentrations and estimated milk yield compared with confined production systems in temperate zones. However, geographical region, stocking density, and abrupt cessation of milking at dry-off were associated with prevalence of hyperketonemia in pasture-based dairies. SN - 1873-1716 UR - https://www.unboundmedicine.com/medline/citation/31864169/Blood_β-hydroxybutyrate_concentrations_and_early_lactation_management_strategies_on_pasture-based_dairy_farms_in_Colombia L2 - https://linkinghub.elsevier.com/retrieve/pii/S0167-5877(19)30355-1 DB - PRIME DP - Unbound Medicine ER -