The product tested (Palbio 50 RD, Bioibérica, S. A.,
Barcelona, Spain) is a coproduct of the heparin industry
obtained from clean endothelial and mucosal digestive
tissues of pigs free of digesta content. The fresh tissues
are washed with hot water before heparin extraction,
and then the mucosa is digested, solubilized, and sterilized
via an enzymatic process under controlled conditions
of time, temperature, and pH. The hydrolyzed
mucosa is sprayed into high protein SBM at an approximate
proportion of 30% to facilitate the handling.
Then, the commercial product is dried using a fluid bed
system that prevents structural damages of the protein
fraction. The calculated AMEn (3,050 kcal/kg) and the
total tract digestibility of the key indispensable AA of
the HPM used for the formulation of the diets were
those indicated by the Fundación Española Desarrollo
Nutrición Animal (2010)