title: Effect of dietary amylose/amylopectin ratio on growth performance, carcass traits, and meat quality in finishing pigs.
abstract: The present study was conducted to evaluate the effect of dietary amylose/amylopectin ratio (DAR) on body health and meat quality in finishing pigs. A total of forty-eight DLY pigs (initial body weight of 74.9±5.0kg) were randomly allotted to two treatments, and fed either with LR (DAR: 12/88) or HR (DAR: 30/70) diet. Results showed that ingestion of a HR diet not only decreased the triacylglycerol and cholesterol concentrations in plasma (P<0.05), but also reduced the lipid contents in liver (P<0.05). Interestingly, ingestion of a HR diet tended to reduce the intramuscular fat content (P=0.06), and significantly increased the firmness (P<0.05) and loin-eye area (P<0.01). Moreover, ingestion of a HR diet significantly decreased the levels of MyHC I (P<0.05), and elevated the levels of MyHCIIb (P<0.05) gene expression in longissimus dorsi. Ingestion of a HR diet has resulted in down-regulation of the FAS3 gene in liver and longissimus dorsi (P<0.05). These findings suggested that a HR diet is helpful to reduce the lipogenesis both in liver and muscle.
authors.affiliation: Institute of Animal Nutrition, Sichuan Agricultural University, Yaan, Sichuan 625014, China.
authors.forename: Can
authors.initials: C
authors.lastname: Yang
authors.affiliation: Institute of Animal Nutrition, Sichuan Agricultural University, Yaan, Sichuan 625014, China.
authors.forename: Daiwen
authors.initials: D
authors.lastname: Chen
authors.affiliation: Institute of Animal Nutrition, Sichuan Agricultural University, Yaan, Sichuan 625014, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Yu
authors.affiliation: Institute of Animal Nutrition, Sichuan Agricultural University, Yaan, Sichuan 625014, China.
authors.forename: Zhiqing
authors.initials: Z
authors.lastname: Huang
authors.affiliation: Institute of Animal Nutrition, Sichuan Agricultural University, Yaan, Sichuan 625014, China.
authors.forename: Xiangbing
authors.initials: X
authors.lastname: Mao
authors.affiliation: Institute of Animal Nutrition, Sichuan Agricultural University, Yaan, Sichuan 625014, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Yu
authors.affiliation: Institute of Animal Nutrition, Sichuan Agricultural University, Yaan, Sichuan 625014, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Zheng
authors.affiliation: Institute of Animal Nutrition, Sichuan Agricultural University, Yaan, Sichuan 625014, China. Electronic address: hejun8067@163.com.
authors.forename: Jun
authors.initials: J
authors.lastname: He
mesh_terms: D000687:Amylopectin / Q000008:administration & dosage*; D000688:Amylose / Q000008:administration & dosage*; D000821:Animal Feed / Q000032:analysis; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001835:Body Weight; D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D004032:Diet / Q000662:veterinary*; D015536:Down-Regulation; D063427:Food Quality; D007328:Insulin / Q000097:blood; D050356:Lipid Metabolism; D008460:Meat; D018482:Muscle, Skeletal; D018995:Myosin Heavy Chains / Q000235:genetics / Q000378:metabolism; D013552:Swine / Q000254:growth & development*; D014280:Triglycerides / Q000097:blood
chemical_list: D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D007328:Insulin; D014280:Triglycerides; D000688:Amylose; D000687:Amylopectin; D018995:Myosin Heavy Chains
keywords: Amylose/amylopectin ratio; Lipid metabolism; Meat quality