Abstract #T44

# T44
Identification and characterization of calf management clusters among dairy herds from Trenque Lauquen, Argentina.
Federico Demateis Llera4, Claudina Vissio3,1, Paula Turiello*1, Alejandra Herrero2, Alejandro Larriestra1, 1Facultad de Agronomía y Veterinaria UNRC, Río Cuarto, Córdoba, Argentina, 2Facultad de Ciencias Veterinarias, UBA, Buenos Aires, Buenos Aires, Argentina, 3CONICET, Río Cuarto, Córdoba, Argentina, 4INTA, Trenque Lauquen, Buenos Aires, Argentina.

A cross-sectional study was conducted to describe and typify calf health and production management among dairy herds from Trenque Lauquen County, Argentina. A comprehensive survey about calf health care and nutrition management was carried out in 46 randomly selected dairy herds with 60 to 400 cows, 66% of the county dairy herd population belonging to that segment. The questionnaire was divided into topics and subjected to correlation analysis to reduce collinear variables. A multiple correspondence method was used to select the most discriminant management factors, and those factors were used in a hierarchical cluster analysis to typify the herds. The overall survey response rate was 83%. The most discriminant factors were pre-fresh management, colostrum and health management, record keeping, workers profile, and producers’ management and performance perceptions. We identified 2 clusters (C1 = 22 herds and C2 = 24 herds) including both individual and collective rearing systems with differences regarding several aspects. Farms in C1 were better managed in comparison with those included in C2. Most of C1 producers vaccinated cows at dry-off and had a pre-fresh pen, administered colostrum artificially, disinfected calves navels and fed them more than 4 L of milk daily, and hired calf managers with higher education level. The dairy farm clusters found and described in this study would contribute to a better understanding of the calf management variation between herds focusing on the strengths and weaknesses of each cluster, and it would also contribute as a research input for extension programs on calf management.

Key Words: calf health, cluster, calf management