Dear research peers,
It is well established that NDF (and effective fibre or peNDF) regulates dry matter intake via rumen-fill effect in high yielding cows. Now, is there any similar mechanism for NDF intake limiting dry matter intake exists in dairy buffaloes?
Thanks!
Hi Mahesh.this link can help you.
www.thejaps.org.pk/docs/v-24-4/06.pdf .
High NDF based diet may have an adverse effect on feed intake of ruminants. Like other ruminants, an increase in NDF content of buffalo diet tends to reduce the dry matter intake. Thus, optimum fiber requirement of buffalo needs to be known.
In Holstein cow, DMI(Body weight%)=120/NDF. dairy buffaloes has the same mechanism. Different NDF composition and variant play different role in DMI .NDF include fiber, hemicellulose (sol fiber),lignin, ash ,ADFICP . More proportion of half fiber (Sole fiber) ,more rapid digestible , more DMI, At the same NDF, For example, Beet pulp or citrus pulp has more DIM than grain straw ;NDF size has effect on DMI. It can determine retention time in rumen. Legume NDF has more DMI than grass . So we must determine 24h IVDMTD/NDFD to know NDF digestibility in vivo or in vitro
Thank you very much for all of your valuable answers.
It seems, there is a high need to establish NDF to DMI relationship in dairy buffaloes by animal science fraternity.
High NDF is likely to contribute to poor digestibility and animal performance. This leads to more retention of feeds in the rumen and as result likely to have reduced DMI.
Dear Mburu,
Thank you for your answer. Although basic concept is true, my point is quantitative data on NDF level and DMI seems non-existent for dairy buffaloes in literature.
The voluntary intake of cows is negatively correlated with the content of cell wall structures in the feed. However, the extent of correlation varies from the source of feed (Roughage Vs. Conc or Non leguminous fodder Vs Leguminous fodder)...
hi
as i think this link will help you
www.thejaps.org.pk/docs/v-24-4/06.pdf .
Dear Sir.
NDF measures most of the structural contents in plant cells as expample lignin, hemicellulose and cellulose.
Regards.
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