Dietary methionine requirement for optimal growth performance and carcass characteristics in finishing gilts

Date

2010-03-02T16:19:26Z

Journal Title

Journal ISSN

Volume Title

Publisher

Kansas State University. Agricultural Experiment Station and Cooperative Extension Service

Abstract

In Exp. 1, increasing dietary methionine from .12 to .22% (.10 to .20% apparent digestible methionine) in diets containing excess cystine had no effect on ADG, ADFI, 10th rib fat depth, and longissimus muscle area in finishing gilts from 130 to 190 lb. However, increasing dietary methionine tended to linearly improve feed efficiency. In Exp. 2, increasing dietary methionine from .11 to . 17% (. 10 to . 15% apparent digestible methionine) in diets containing excess cystine resulted in linear improvements in ADG, ADFI, and F/G in finishing gilts from 160 to 230 lb. Quadratic improvements were observed for F/G. No effect was seen on 10th rib fat depth. These data suggest that finishing gilts fed .58% total lysine (.50% apparent digestible lysine) require approximately .14% (3.3 g/d) total methionine or .125 %, (2.9 g/d) apparent digestible methionine.

Description

Keywords

Swine, Growth, Methionine, Finishing pigs

Citation

Collections