Composition chimique et coagulation du lait sécrété en fin de gestation et au début de la lactation suivante par des vaches laitières conduites sans période sèche
Abstract:Summary -Chemical composition and clotting properties of milk secreted during late pregnancy by dairy cows managed without the dry period. Among 12 dairy Holstein cows in their first lactation that we attempted to milk until their 2nd calving, five had to be dried off, 9 days before calving on average. Milk progressively enriehed in somatie cells and fat. Increase in proteins was mainly due to caseins but soluble proteins increased relatively more, so that the casein/protein ratio decreased. Increase in IgG 1 … Show more
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