Resumen

GUTIERREZ-MORALES, José Pablo et al. Management practices that influence body development of lactating calves in family dairy farms. Ecosistemas y recur. agropecuarios [online]. 2025, vol.12, n.3, e4430.  Epub 05-Dic-2025. ISSN 2007-901X.  https://doi.org/10.19136/era.a12n3.4430.

The objective was to identify practices that affect calves´ body development. Calves fed a concentrate for lactating cows had lower daily weight gain (DWG) than those fed a concentrate for calves and those not supplemented (0.493 ± 0.031b vs 0.582 ± 0.014a and 0.568 ± 0.040a kg day-1; P = 0.047). Housed at low and medium protection levels had lower DWG than those housed at a high level (0.525 ± 0.026a and 0.509 ± 0.020a vs 0.631 ± 0.018b kg day-1; P < 0.001). Weaned > 90 and between 61-90 days had lower DWG than those weaned < 61 days (0.530 ± 0.019a and 0.532 ± 0.018a vs 0.735 ± 0.030b kg day-1; P = 0.003). The body development of calves is negatively affected by the intake of a concentrate designed for lactating cows, housed under limited environmental protection, and extended ages at weaning.

Palabras llave : Dairy farm; small-scale; weather; housing; weaning.

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