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British Poultry Science | 2006

Effects of methionine and betaine supplementation on growth performance, carcase composition and metabolism of lipids in male broilers

Xiuan Zhan; Jian Xin Li; Zi-Rong Xu; RuQian Zhao

1. This study was conducted to investigate the effects of methionine and betaine supplementation on growth performance, carcase composition and lipid metabolism in growing broilers. 2. A total of 450 commercial broilers, 22u2009d of age, were randomly allocated to three groups, each of which included three replicates (50 birds per replicate). The groups received the same methionine-deficient diet supplemented with 0 or 1u2009g/kg methionine, or 0·5u2009g/kg betaine, respectively. 3. Methionine and betaine supplementation significantly improved weight gain and feed conversion. Supplemental methionine and betaine also significantly increased breast muscle yield and decreased abdominal fat content. Meanwhile, addition of methionine and betaine significantly increased the contents of creatine and free carnitine in liver, the activity of hormone-sensitive lipase in abdominal fat and the concentration of free fatty acid in serum, whereas uric acid concentration in serum was significantly decreased. 4. The results of this study suggest that betaine can spare methionine in its function as an essential amino acid and is as effective as methionine in improving performance and carcase quality of growing broilers if the diet is moderately deficient in methionine. The decrease in abdominal fat may be due to the increased carnitine synthesis in liver and hormone-sensitive lipase activity in abdominal fat.


Archives of Toxicology | 2006

Evaluation of caspase-dependent apoptosis during fluoride-induced liver lesion in pigs.

Xiuan Zhan; M. Wang; Zi-Rong Xu; Wei Fen Li; Jian Xin Li

Sixteen barrows (Duroc×Landrace×Yorkshire) were randomly divided into two groups, each consisting eight pigs. The groups received the same basal diet supplemented with 0 and 400xa0mg/kg fluoride, respectively. Histological examinations, including in situ terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL), Haematoxylin and Eosin staining (HE) and transmission electron microscopy observation, found apoptotic hepatocytes 50xa0days after additional 400xa0mg/kg fluoride treatment. The obvious DNA ladder and the significantly increased both hepatic caspase-9 and caspase-3 activity indicated that fluoride induced caspase-dependent apoptosis in vivo. In addition, serum glutamate pyruvate transaminase (GPT) activity and hepatic lipid peroxides (LPO) concentration was significantly increased. The activity of serum glutamate oxaloacetate transaminase (GOT) showed an increased trend. The results suggest that fluoride induces apoptosis by elevating the oxidative stress-induced lipid peroxidation, causing mitochondrial dysfunction and further activating caspase-9 and caspase-3.


Animal Feed Science and Technology | 2007

Effects of different selenium source on selenium distribution, loin quality and antioxidant status in finishing pigs

Xiuan Zhan; M. Wang; RuQian Zhao; WeiFeng Li; Zi-Rong Xu


Animal Feed Science and Technology | 2007

Effect of different selenium source on growth performances, glutathione peroxidase activities, muscle composition and selenium concentration of allogynogenetic crucian carp (Carassius auratus gibelio)

Yanbo Wang; Jianzhong Han; Weifen Li; Zi-Rong Xu


Animal Feed Science and Technology | 2007

Development of a microbial fermentation process for detoxification of gossypol in cottonseed meal

Wenju Zhang; Zi-Rong Xu; Shun-Hong Zhao; Jianyi Sun; Xia Yang


Animal Feed Science and Technology | 2007

Effects of the lactoferrin (LF) on the growth performance, intestinal microflora and morphology of weanling pigs

Yizhen Wang; Tizhong Shan; Zi-Rong Xu; Jie Feng; Zhong-Qiang Wang


Journal of Trace Elements in Medicine and Biology | 2006

Effects of fluoride on hepatic antioxidant system and transcription of Cu/Zn SOD gene in young pigs ☆

Xiuan Zhan; M. Wang; Zi-Rong Xu; Wei Fen Li; Jian Xin Li


Animal Feed Science and Technology | 2007

Effects of chromium nanocomposite supplementation on blood metabolites, endocrine parameters and immune traits in finishing pigs

M. Wang; Zi-Rong Xu; L.Y. Zha; M. D. Lindemann


World Journal of Gastroenterology | 2004

Effects of non-starch polysaccharides enzymes on pancreatic and small intestinal digestive enzyme activities in piglet fed diets containing high amounts of barley

Wei-Fen Li; Jie Feng; Zi-Rong Xu; Cai-Mei Yang


Archive | 2005

EFFECTS OF FLUOROSIS ON LIPID PEROXIDATION AND ANTIOXIDANT SYSTEMS IN YOUNG PIGS

Xiuan Zhan; Zi-Rong Xu; Jian-xin Li; M. Wang

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RuQian Zhao

Nanjing Agricultural University

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Jianzhong Han

Zhejiang Gongshang University

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