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Chapitre D'ouvrage Année : 2019

Evolution of the feeding approach in sows during the last decades

Résumé

In the recent years, the reproductive performance of sows has been drastically improved. Nowadays, in many farms, with the use of hyperprolific sows, the average litter size exceeds 15 piglets at farrowing and 13 at weaning. These changes in performance have been the major drivers for the evolution of sow's nutritional requirements during pregnancy and lactation. At the same time, a large amount of scientific knowledge has been generated over the past thirty years allowing, with the help of mathematical modelling, a holistic approach of energy, amino acids and minerals supplies to sows. The aim of this chapter is to describe the evolutions in the approach of sows' feeding over the past decades and show how the current state of knowledge on sow nutrition can be used for developing models and decision support tools and improving feeding strategies in practice. Different examples are shown to illustrate how the use of such tools can help in optimizing the productivity of sows. Until recently, the maximization of reproductive performance of sows and their litters has been the main objective considered when defining nutritional supplies. Nowadays, new objectives in relation with the increasing societal concern for animal welfare and environment must also be considered. Pig production systems, as well as other animal production systems, are also questioned by the society at a global level in terms of their overall sustainability and acceptability, and this will affect feeding strategies in the future.
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Dates et versions

hal-02437612 , version 1 (13-01-2020)

Identifiants

  • HAL Id : hal-02437612 , version 1
  • PRODINRA : 491710

Citer

Jean-Yves Dourmad. Evolution of the feeding approach in sows during the last decades. Nutrition of hyperprolific sows, Novus International Inc., 2019, 978-84-17884-05-5. ⟨hal-02437612⟩
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