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Submitted December 12, 2024
Published 2024-12-12

Artículos

Vol. 7 No. 1 (2024): Revista investigaciones agropecuarias

EFFECT OF MILK SUPPLY IN INCREASING/DECREASING ORDER ON THE GROWTH OF JERSEY CALF


DOI https://doi.org/10.48204/j.ia.v7n1.a6546

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References
DOI: 10.48204/j.ia.v7n1.a6546

Published: 2024-12-12

How to Cite

Rodríguez, F., Castillo-Umaña, M., Alpizar-Naranjo, A., & Grajales-Cedeño, J. (2024). EFFECT OF MILK SUPPLY IN INCREASING/DECREASING ORDER ON THE GROWTH OF JERSEY CALF. Journal of Agricultural Research, 7(1), 55–74. https://doi.org/10.48204/j.ia.v7n1.a6546

Abstract

The objective of this study was to compare the effects of two milk-feeding methods on Jersey heifers. The experiment was conducted at the Santa Lucía Experimental Farm of the National University in Costa Rica using 16 heifers distributed across the two treatments. One treatment involved providing 4 liters of milk per day (CONV, n=8), while the other followed an increasing/decreasing milk offer scheme (C/D, n=8), with weekly variations in the amount of milk administered. Indicators of nutrient intake, productivity, health, and economic factors were evaluated. Heifers fed using the C/D method achieved higher body weights (P<0.05) starting from the fourth week, with greater daily weight gain and height than the conventional treatment (CONV), despite significant individual variations. Additionally, C/D heifers exhibited a lower fecal score in the sixth week, indicating a reduced incidence of diarrhea (P<0.05). No mortality was recorded in either of the treatment groups. Furthermore, the cost per kilogram of weaned heifers was lower in the C/D group (3.44 USD) compared to in the CONV group (3.83 USD). In conclusion, the C/D method improved productive performance, health, and economic efficiency of heifers, although individual variability in feed intake was an important factor to consider when implementing management and nutrition strategies.

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