Invited review: Role of rumen biohydrogenation intermediates and rumen microbes in diet-induced milk fat depression: An update
نویسندگان
چکیده
منابع مشابه
Diet, rumen biohydrogenation and nutritional quality of cow and goat milk fat
The potential to modify the milk fatty acid (FA) composition by changing the cow or goat diets is reviewed. Ruminal biohydrogenation (RBH), combined with mammary lipogenic and D-9 desaturation pathways, considerably modifies the profile of dietary FA and thus milk composition. The pasture has major effects by decreasing saturated FA and increasing FA considered as favorable for human health (c9...
متن کاملThe role of microbes in rumen lipolysis and biohydrogenation and their manipulation.
Despite the fact that the ruminant diet is rich in polyunsaturated fatty acids (PUFA), ruminant products - meat, milk and dairy - contain mainly saturated fatty acids (SFA) because of bacterial lipolysis and subsequent biohydrogenation of ingested PUFA in the rumen. The link between SFA consumption by man and coronary heart disease is well established. In contrast, ruminant products also contai...
متن کاملRole of K on Rumen Fermentation and Milk Fat Synthesis
Diet-induced milk fat depression (MFD) continues to have major economic impact in the dairy industry and a priority for finding solutions. Current thinking links MFD with the formation of bioactive trans fatty acid intermediates produced from biohydrogenation of unsaturated fatty acids by the rumen microbial population. The most potent biohydrogenation intermediates linked to MFD include severa...
متن کاملRecent Advances in Milk Fat Depression: 1. Time Course of Milk Fat Depression and 2. Adipose Tissue Lipogenesis during Milk Fat Depression
Mammalian milk fat concentration and composition are variable and responsive to nutritional factors. First described over one and a half centuries ago, diet-induced milk fat depression (MFD) is characterized by a decrease in milk fat yield of up to 50% with no change in milk yield or yield of other milk components. MFD is classically observed in ruminants fed highly fermentable diets or diets t...
متن کاملDiet-Induced Alterations in Total and Metabolically Active Microbes within the Rumen of Dairy Cows
DNA-based techniques are widely used to study microbial populations; however, this approach is not specific to active microbes, because DNA may originate from inactive and/or dead cells. Using cDNA and DNA, respectively, we aimed to discriminate the active microbes from the total microbial community within the rumen of dairy cows fed diets with increasing proportions of corn silage (CS). Nine m...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2020
ISSN: 0022-0302
DOI: 10.3168/jds.2019-17662