Premium
Effects of dietary supplementation of cysteamine on growth performance, carcass quality, serum hormones and gastric ulcer in finishing pigs
Author(s) -
Yang ChengBo,
Li AiKe,
Yin YuLong,
Huang RuiLin,
Li TieJun,
Li LiLi,
Liao YiPing,
Deng ZeyYan,
Zhang Jun,
Wang Bin,
Zhang YoungGang,
Yang Xiaojian,
Peng Jian,
Fan Ming Z
Publication year - 2005
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2123
Subject(s) - meal , zoology , cysteamine , basal (medicine) , endocrinology , medicine , feed conversion ratio , body weight , growth hormone , large white , hormone , chemistry , biology , insulin
A study was conducted to determine the effects of graded levels of dietary inclusion of a cysteamine (Cs) preparation on growth performance, carcass quality, plasma hormone levels, gastric pH and occurrence of gastric ulcer in finishing pigs. A total of 384 Landrace × Large White finishing pigs, (192 gilts and 192 barrows) with an average initial body weight of 66.05 ± 0.623 kg (mean ± SEM) were randomly divided into 24 floor pens, with eight gilts and eight barrows in each pen (9.2 m 2 ) as one experimental unit. The 24 pens of pigs were randomly allocated to one of three diets: (1) a maize/soybean meal basal diet; (2) the basal diet plus 30 mg Cs kg −1 diet; and (3) the basal diet plus 50 mg Cs kg −1 diet. Dietary supplementation of Cs had quadratic effects ( P < 0.01) on final body weight and average daily gain, with optimal responses occurring at 30 mg kg −1 . Dietary supplementation of Cs quadratically improved ( P < 0.01) average daily feed intake and feed/gain ratio, with optimal responses occurring at 30 mg kg −1 . Dietary supplementation of Cs had a quadratic effect ( P < 0.01) on muscle RNA/DNA ratio. Furthermore, dietary supplementation of Cs reduced ( P < 0.05) back‐fat thickness. Dietary supplementation of Cs had quadratic effects ( P < 0.05) on plasma glucagon and T 3 hormone levels, with optimal responses occurring at 30 mg kg −1 , but had no effect ( P > 0.05) on plasma growth hormone, insulin and T 4 levels. There were no apparent pathological changes seen in the stomach mucosa of pigs fed at 30 mg Cs kg −1 compared with the control diet. It is concluded that a low dose of dietary inclusion of Cs at 30 mg kg −1 can improve growth performance and carcass quality without adverse effects on the stomach in finishing pigs. Copyright © 2005 Society of Chemical Industry