Assessment of potato peel and agro-forestry biochars supplementation on in vitro ruminal fermentation oleh Ana R.F. Rodrigues, Margarida R.G. Maia, Ana R.J. Cabrita, Hugo M. Oliveira, Maria Bernardo, Nuno Lapa, Isabel Fonseca, Henrique Trindade, José L. Pereira, António J.M. Fonseca