ArticleTranslational animal science2026
Modeling feed intake in lactating sows during summer considering temperature and humidity covariates.
Article in Translational animal science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Recent feeding history drives prediction of daily feed intake in lactating sows.Translational animal science · 2026Article
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Authors and funding
6 authors.
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Abstract
Heat stress during lactation reduces voluntary feed intake (FI) and milk production in sows, thereby limiting piglet growth. In this context, the main objectives of this study were to compare alternative models for describing daily FI over a 22-d lactation and to evaluate temperature- and humidity-related environmental covariates under commercial conditions. Daily FI records from 898 lactating sows (parity 1: 503, parity 2: 138, parity 3 and higher: 257) were analyzed using mixed-effects models. The generalized Michaelis-Menten (GMM) function was compared against a third-order orthogonal polynomial function using model diagnostic metrics and a sow-level cross-validation. To account for thermal stress, we incorporated daily maximum air temperature (MT), daily maximum dew point (MD), and degree-hours above 24°C (DGH24) into the models. These environmental indicators were evaluated as fixed linear covariates, as interactions with lactation time components, or as proportional modifiers to the base intake curve. The cubic polynomial mixed-effects model (
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