Journal of Fisheries & Livestock Production
Open Access

Abstract

The ileal-cannulated pig model for amino acids (AA) determination in pigs uses animals older than six weeks due to difficulties related to implanting the T-cannula in distal ileum of younger pigs and complications during the post-surgical recovery. However, to properly formulate the diet of weaned pigs, the nutritive value of feed ingredients should be determined with younger pigs. Thus, twenty five post weaned piglets were used to determine the apparent (AID) and standardized (SID) ileal AA digestibilities of full-fat rice bran (FFRB) with or without multi-carbohydrase (MC) and phytase (Phy) supplementation. Piglets were weaned at 23 days of age and individually housed in digestibility cages until 42 days of age. A completely randomized experimental design with a 2Ã?Â?2 (with or without MC and Phy) factorial treatment arrangement was used to determine the effects of enzymes. Reference diets (RD: 5% casein) was replaced by 30% of FFRB with or without MC, Phy or MC+Phy. A RD was used to quantify endogenous AA losses. Ileal digesta was collected at slaughter (about 6 weeks of age). The AID and SID of the indispensable amino acids without enzymes were on average 18% and 6%, respectively, lower than the values described in the literature (NRC, 2012). The MC increased the AID and SID of all AA in FFRB, whereas Phy increased only the proline digestibility (P<0.05). The MC is an alternative to improve the AA digestibility in FFRB, whereas the Phy does not change the most part of AA digestibility.

Biography

Email: julio@zootecnista.com.br