ArticleTropical animal health and production2026
Modeling the lactation curve in a herd of registered Jerseys in the dry tropics of Mexico.
Article in Tropical animal health and production, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The production performance of livestock depends strongly on the environment and management conditions, especially the capability of exotic breeds in different climatic regions. There are concerns about adaptation issues and decreased productivity of dairy breeds when raised in a distinct climate. Therefore, this research aimed to understand the productive performance of Jerseys raised with local resources under the dry tropical conditions in southern Mexico and develop model parameters for milk production throughout the lactation period. To this end, in a registered Jersey herd in Chiapas, México, over a two-year period with 42 cows and 2227 weekly records, the lactation curve for milk, fat, and protein was modeled and characterized using nonlinear mathematical models. The Brody, modified Brody, Sikka, Wood, Wilmink, and Nelder mathematical models were employed. The adjusted multiple coefficient of determination (R²
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