Philippe Gossart

Dear John bonjour, Once more, we can say the dairy cow nutrition is complex. Your biblio compiling has also the merit to focus on the great interest & action of the cellulolytic rumen bacteria. Thank you to write this: « rumen microbes have the ability to both detroy ans synthesize B vitamins… » It is a great message… Vit B12 is also an essential key to change propionate (endogenious & e ...

The laying hen nutrition is not every where in the world an exact science. We have a lot of various parameters, strains, raw matrials, production management etc…etc…etc… For these reasons we need not to forget the basics… Nutrition, means…Digestion, means …Absorption. For long time, nutritionnists have forgotten an essential organ : the Pancreas. Today, with the sodium butyrate we have t ...

The laying hen nutrition is not every where in the world an exact science. We have a lot of various parameters, strains, raw matrials, production management etc…etc…etc… For these reasons we need not to forget the basics… Nutrition, means…Digestion, means …Absorption. For long time, nutritionnists have forgotten an essential organ : the Pancreas. Today, with the sodium butyrate we have t ...

Dear Luc... The laying hen nutrition is not every where in the world an exact science. We have a lot of various parameters, strains, raw matrials, production management etc…etc…etc… For these reasons we need not to forget the basics… Nutrition, means…Digestion, means …Absorption. For long time, nutritionnists have forgotten an essential organ : the Pancreas. Today, with the sodium butyr ...

An old, easy, very practical technic to control the egg shell quality is also the Egg Specific Gravity (Mr Harms/ Florida Univ) The fall of the ESG is closely related to the egg shell quality. 1,083 or 1,085 at the beginning of laying 1,08 around 45 to 50 weeks the point of balance 1,078 around 60 weeks 1,075 around 70 weeks 1,073 around 80 weeks ESG is a right marker of the egg shell quality. The ...

Yes ,the body score level is a basic aspect for fertility in Dairy Herd. I agree with you. The trace éléments… why not… But you seem to forget the essential : the level of blood insuline, the key of the ovary feeding & maturity. No good fertility without good feeding/glucose ovary… No good fertility without good mature ovary…QED… quod erat demon ...

by product means various & indeterminate ingredient. Trans esterification reaction produces by product...interesting in animal nutrition...but also ...Methanol ! In Dairy Cow the Glycerol (with Methanol) use increases the ketone bodies...that is to say the opposite effect of the usual food or feed grade Glycerol (without Methanol). Sometimes an economic solution has proved to be costly...

For my part Probiotic trials are positive at 50% (very good) but also negative at 50%... you see what I mean... It is an old concept with various handicaps (to jump)... inconstance quality product, pH instability, & endogenious germs acceptation... Probiotics are heads or tails... good luck !