Effects of nutrient restriction on mammary cell turnover in lactating dairy cows

Abstract : 15 crossbred dairy cows divided into control (basal diet; n=7) and restricted diet (60% grass silage and 40% hay; n=8) groups. Milk yield and composition were determined, and mammary glands were removed and weighed after 11 weeks of lactation. Results revealed that milk yield was lower in restricted diet group from calving to slaughter. Restricted feeding decreased milk protein content and milk lactose content with similar milk fat composition. Mammary glands of restricted diet group cows were lighter than control. Apoptosis in the mammary gland was higher in the restricted diet animals. It is concluded that lower milk yield induced by nutrient restriction in lactating dairy cows is partly due to the lower number of mammary cells.
Type de document :
Communication dans un congrès
3rd EAAP International Symposium on Energy and protein metabolismand Nutrition, Sep 2010, Parme (IT), Italy. pp.265-266, 2010
Liste complète des métadonnées

https://hal-agrocampus-ouest.archives-ouvertes.fr/hal-00729493
Contributeur : Céline Martel <>
Soumis le : vendredi 7 septembre 2012 - 15:41:46
Dernière modification le : mercredi 21 mars 2018 - 16:08:10

Identifiants

  • HAL Id : hal-00729493, version 1

Citation

F. Dessauge, Vanessa Lollivier, L. Finot, S. Wiart, E. Cutullic, et al.. Effects of nutrient restriction on mammary cell turnover in lactating dairy cows. 3rd EAAP International Symposium on Energy and protein metabolismand Nutrition, Sep 2010, Parme (IT), Italy. pp.265-266, 2010. 〈hal-00729493〉

Partager

Métriques

Consultations de la notice

133