Effects of Supplemental Liquid DL-methionine Hydroxy Analog Free Acid in Diet on Growth Performance and Gastrointestinal Functions of Piglets.

C Kaewtapee,N Krutthai,C Bunchasak

doi:10.5713/ajas.15.0579

C Kaewtapee, N Krutthai + Show 1 more

Open Access

https://doi.org/10.5713/ajas.15.0579

Copy DOI

Abstract

This study was conducted to determine the effect of dietary supplementation of liquid DL-methionine hydroxy analog free acid (DL-MHA) on growth performance and gastrointestinal conditions of piglets. One hundred and eighty crossbred barrow piglets (Large White×Landrace, body weight: 12.48±0.33 kg) were divided into three groups with ten replications of six piglets each. Piglets received DL-MHA in diet at a concentration of 0 (control group), 0.15%, or 0.24%. The results indicated that increasing the standardized ileal digestible (SID) of sulfur amino acids (SAA) to lysine (SID SAA:Lys) ratio by supplementation of DL-MHA tended to increase (quadratic; p<0.10) weight gain and ADG, and showed slightly greater (linear; p<0.10) gain:feed ratio. The pH in the diet and cecum linearly decreased (p<0.01), whereas pH in colon had a quadratic response (p<0.01) with increasing supplementation of DL-MHA. By greater supplementation of DL-MHA, the population of Lactobacillus spp. in rectum was likely to increase (quadratic; p<0.10), but Escherichia coli population in the diet was reduced (quadratic; p<0.05). Acetic acid concentration and total short-chain fatty acids in cecum linearly increased (p<0.05), whereas valeric acid in cecum quadratically increased (p<0.05) with increasing DL-MHA levels. Moreover, the villous height of the jejunum quadratically increased (p<0.01) as the supplementation of DL-MHA was increased. It is concluded that the addition of DL-MHA in diet improved the growth performance and the morphology of gastrointestinal tract of piglets.

Highlights

DL-Met can be seen when a practical diet formulated based on corn-soybean or broken rice-soybean is used
The optimum requirement of standardized ileal digestible (SID) SAA:Lys ratio by supplementation with DL-MHA ranged from 60% to 62%, whereas the 69% of SID SAA:Lys ration was an excessive level, resulting in the negative effect on growth performance (Gaines et al, 2005)
The basal diet was supplemented with DL-MHA at a concentration of 0, 0.15% or 0.24%, the SID SAA:Lys ratio was 49%, 61%, and 69%, respectively

Summary

Introduction

DL-Met can be seen when a practical diet formulated based on corn-soybean or broken rice-soybean is used. Methionine (Met) is considered as the second or third (Bunchasak, 2014; Krutthai et al, 2015). In a limiting amino acid in diet for modern nursery pigs (Gaines broken rice-soybean based diet, Kongkaew (2014). Amino acid in protein synthesis and as the principal of DL-Met (w/w), and the standardized ileal digestible (SID). Biological methylating agent in the body (Bunchasak, 2014). Of sulfur amino acids (SAA) to Lys (SID SAA:Lys) ratio for Commercially, both in powder DL-methionine Biological methylating agent in the body (Bunchasak, 2014). of sulfur amino acids (SAA) to Lys (SID SAA:Lys) ratio for Commercially, both in powder DL-methionine

Objectives

Methods

Results