title: Influence of different production strategies on the stability of color, oxygen consumption and metmyoglobin reducing activity of meat from Ningxia Tan sheep.
abstract: Fifty male Ningxia Tan sheep were randomly divided into five groups (10 per group). Different feeding strategies were applied to each group for 120 days prior to slaughter. The sheep belong to five groups were pastured for 0 h (feedlot-fed), 2h, 4h, 8h, 12h per day on a natural grazing ground, respectively. M. semitendinosus muscle from Tan sheep was obtained after slaughter. Instrumental color, pH values, oxygen consumption rate, metmyoglobin reducing activity and relative metmyoglobin percentages were analyzed after 1, 3, 5, 7 and 9 days of refrigerated storage. Long-term daily grazing and herbage-based diet were conducive to maintain a lower oxygen consumption rate, higher metmyoglobin reducing activity and lower metmyoglobin accumulation. The combination of pasture-fed and feedlot-fed was conducive to weight gain, and at the same time, increased the color stability of the meat from Ningxia Tan sheep.
authors.affiliation: College of Food Science and Nutritional Engineering, China Agricultural University, 17 Qinghua East Road, Haidian District, Beijing 100083, PR China; College of Biological Science and Engineering, Hebei University of Science and Technology, No.26 Yuxiang Street, Yuhua District, Shijiazhuang, Hebei 050000, PR China.
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Gao
authors.forename: Zhenyu
authors.initials: Z
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Miao
authors.forename: Li
authors.initials: L
authors.lastname: Xie
authors.forename: Yan
authors.initials: Y
authors.lastname: Dai
authors.forename: Xingmin
authors.initials: X
authors.lastname: Li
authors.forename: Yong
authors.initials: Y
authors.lastname: Chen
authors.forename: Hailing
authors.initials: H
authors.lastname: Luo
authors.forename: Ruitong
authors.initials: R
authors.lastname: Dai
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000818:Animals; D003116:Color; D004032:Diet / Q000662:veterinary; D061353:Food Storage; D006863:Hydrogen-Ion Concentration; D008297:Male; D008460:Meat / Q000032:analysis*; D008786:Metmyoglobin / Q000032:analysis / Q000737:chemistry*; D018482:Muscle, Skeletal / Q000737:chemistry; D010101:Oxygen Consumption / Q000502:physiology*; D012034:Refrigeration; D034561:Sheep, Domestic
chemical_list: D008786:Metmyoglobin
keywords: Duration of grazing; Herbage- or concentrate -based diet; Metmyoglobin reducing activity; Oxygen consumption rate; Pasture- or feedlot-fed; Tan sheep