Study On The Characteristcs In Venison Of Hybrid F1 Deer

Deer is the foremost one of the traditional economic animal in China, and it wasprovided with significant value for medicine and food. But the venison industry has notbeen developed, with less yield, bad quality, and insecurity. Aging is one of the availabilitymethod, improving meat quality, especialy tenderness, has no influence on special flavorand trait.The study was designed to investigate the character in venison of hybrid F1 deercrossed Xifeng sika deer with Tiansan wapiti, such as the main chemical composition andactive elements, and the metabolic rule of the main chemical composition, ediblecharacteristic, and myofibrils ultrastructure during postmortem aging.1.The chemical composition and active elements in venison of hybrid F1 deer crossedXifeng sika deer with Tiansan wapiti were studied. The results showed that there are plentyinorganic elements in hybrid F1 deer venison, higher content of Mg, Ca, Al, Fe, Zn, P.Higher content of amino acid in venison. There are twelve kinds of fatty acid that have beendetected. The content of unsaturated fatty acid is 38.8ï¼…of the total. PUFA/SFA is 0.36.n6/n3 is 2.96. Higher activity of Superroxide Dismutase (SOD) in venison, higher in msupraspinatus than m longissimus dorsi, m semitendinosus, and m poasos major.2.The biology activity in venison longissimus dorsi protein hydrolysates were studied.The venison was hydrolyzed with double enzymatic combination hydrolyze method inwhich trypsin and papain were added successively. MTT colorimetric analysis was adoptedto determine the proliferation of Vero cell line and L929 cell line in response to the venisonprotein hydrolysates. The results showed that the proliferation of the Vero cell line andL929 cell line was accelerated by the venison protein hydrolysates.3.The influence of the chemical composition and edible quality in venison m Iongissimus dorsi of hybrid F1 deer crossed-Xifeng sika deer with Tiansan wapiti andXifeng sika deer during postmortem aging were studied. The results showed that varietyaspect had marked influence for the chemical composition and edible quality in venisonduring postmortem aging.LD of hybrid F1 deer had higher edible quality with sika deer.LD of hybrid F1 deer had higher moisture content, crud fat content, collagen contentbefore 7d, but lower Wamer-Bratzler shear force (WBSF), drip loss and cooking loss, andcollagen solubility had no difference. Aging is more efficiently to improve tenderness ofvenison LD.4.Analysis of the influence of the chemical composition and edible quality of venisoncuts at different anatomical positions m longissimus dorsi, m semitendinosus, msupraspinatus and m poasos major of hybrid F1 deer crossed Xifeng sika deer with Tiansanwapiti during postmortem aging were studied. The results showed that position aspect hadhigher influence for the chemical composition and edible quality in venison duringpostmortem aging.M longissimus dorsi of hybrid F1 deer had higher crud fat content, collagen contentand lower moisture content, lower Warner-Bratzler shear force (WBSF) and cooking loss,Aging is carry weight to Warner-Bratzler shear force of m longissimus dorsi and msemitendinosus, but has no influence in m supraspinatus and m poasos major after 3d.5.The influence of postmortem aging on the perimysial thickness, fiber diameter, MFI,myofibrils ultrastructure, and SDS-PAGE electrophoresis in venison m longissimus dorsi,m semitendinosus, m supraspinatus and m poasos major of hybrid F1 deer crossed Xifengsika deer with Tiansan wapiti at 0, 3, 5, 7, 14, 21d postmortem aging were studied. Theresults showed that postmortem aging had higher influence for the ultrastructure ofvenison.The perimysial thickness, fiber diameter, MFI, and myofibrils ultrastructure havechanged during postmortem aging, and higher different for positions. Aging has noinfluence for perimysial thickness of ST. PM has the least perimysial thickness and fiber diameter, but higher MFI. MFI increased during postmortem aging for different positions mIongissimus dorsi, m semitendinosus, m supraspinatus and m poasos major of hybrid F1deer.