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L'ingestion d'aliments par les vaches laitières et sa prévision au cours de la lactation

Abstract : The accuracy of intake prediction is essential to formulate diets, because intake is the major cause of variation of nutrient supply. This article was aimed at explaining the recent evolution of the INRA system (Fill Unit System) of voluntary dry matter intake prediction in dairy cows. The first part analyses the complex relationship between milk yield and intake, which led to the introduction of the notion of potential milk yield in the equation predicting intake capacity. The second part considers the relationships between intake and regulation of body reserves and shows the importance of considering the role played by these body reserves in the prediction of intake in early lactation. The last two parts detail the new equations of intake capacity of dairy cows and of concentrate fill values in early lactation : these equations improve the intake estimation with a more dynamic and accurate prediction during lactation.
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https://hal.inrae.fr/hal-02657012
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Philippe Faverdin, Luc Delaby, Remy Delagarde. L'ingestion d'aliments par les vaches laitières et sa prévision au cours de la lactation. Productions animales, Institut National de la Recherche Agronomique, 2007, 20 (2), pp.151-162. ⟨hal-02657012⟩

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