Effects of P and N supply on rumen microbial metabolism in vitro

acide gras volatil ammonia ammoniac azote contenido proteico digestibilidad digestibility fermentation fistulation fistulisation flora microbiana flore microbienne fosforo in vitro experimentation metabolism metabolisme metabolismo metano methane microbial flora modele modelos models nitrogen organic matter ovin ovinos ph phosphore phosphorus protein content protein synthesis rumen sheep volatile fatty acids