PSI-13 - Effects of nutrient density diet with or without emulsifier supplementation on apparent total tract digestibility, apparent ileal digestibility and urine nitrogen content in weaned pigs

Abstract: The recent increase in feed price has prompted scientific investigation to find effective strategy to reduce feed cost without compromising the performance of the animals. Several studies showed the supplemental effect of emulsifiers in the diet of pigs, increase fat digestibility and growth rate but very limited studies were exists on analyzing the effect of different nutrient density diet with or without emulsifier addition on apparent total tract digestibility (ATTD) and apparent ileal digestibility (AID). Thus, this study aims to determine the effects of different nutrient density diets with or without emulsifier supplementation on apparent total tract digestibility, apparent ileal digestibility and urine nitrogen content in weaned pigs. n=16 weaning pigs with an average body weight of 20.19 ± 0.21 kg, were individually fitted with a T-cannulas in the distal ileum and randomly assigned to four dietary treatments: TRT1, High nutrient diet (HD); 2) TRT2, HD + 0.05% emulsifier; 3) TRT3, Low nutrient diet (LD); 4) TRT4, LD + 0.05% emulsifier in a 4 × 4 Latin square design. All data were analyzed with a 2 × 2 factorial design using the GLM procedure of SAS. To determine the effect of emulsifier administration in HD and LD, individual pigs were served as an experimental unit. P < 0.05 was considered as significant. Pigs fed HD diet with 0.05% emulsifier had significantly improved ATTD and AID of dry matter, nitrogen, energy, crude protein and crude fat. Moreover, ATTD essential amino acid of valine, leucine phenylalanine and methionine and non-essential amino acid of glutamic acid, proline, glycine, alanine, tyrosine, cystine had significantly increased in pigs fed HD diet with 0.05% emulsifier. In addition, the inclusion of HD with 0.05% emulsifier had significantly enhanced AID essential amino acid of threonine, valine, isoleucine, lysine, arginine and methionine and non- essential amino acid of serine, glutamic acid, glycine, tyrosine and cystine. Furthermore, pigs fed HD diet with emulsifier showed significantly increased urine nitrogen content. Based on the result, we infer that, feeding high nutrient density diet with 0.05% emulsifier to weaning pigs would be a better option to enhance their ATTD and AID.