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首页> 美国卫生研究院文献>Journal of Animal Science and Technology >Effects of forage level and chromium-methionine chelate supplementation on performance carcass characteristics and blood metabolites in Korean native (Hanwoo) steers
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Effects of forage level and chromium-methionine chelate supplementation on performance carcass characteristics and blood metabolites in Korean native (Hanwoo) steers

机译：饲草水平和蛋氨酸铬螯合物的添加对韩国本土（Hanwoo）公牛生产性能car体特性和血液代谢产物的影响

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A feeding trial was carried out to determine the effects of chromium methionine (Cr-Met) chelate and forage level over two years, 1st fattening and 2nd fattening period on growth parameters, carcass characteristics and blood metabolites of 46 Korean native (Hanwoo, Bos Taurus, BW = 183 ± 44 kg) steers. Treatments were: 1) Steers in the low forage (LF) group were fed diets that consisted of 60% concentrate and 40% forage; 2) Steers in the high forage (HF) group were fed diets that consisted of 40% concentrate and 60% forage. Following the 1st fattening period, steers (BW = 480 ± 37.6 kg) were randomly assigned to four treatment groups: LF (40 F plus no Cr-Met supplementation in the 2nd fattening period), LFCM (40LF plus added 400 ppb of Cr-Met during the 2nd fattening period), HF (60 F plus no added Cr-Met during the 2nd fattening period) and HFCM (60 F plus added 400 ppb of Cr-Met in the 2nd fattening period). Dry matter intake of the treatment diets did not differ during the raising and 1th fattening period (P > 0.05). The ADG in the raising period showed no difference between the 40 F and 60 F groups (P > 0.05). Carcass characteristics including rib-eye area and meat yield index were higher in HF than the other treatment groups (P < 0.05). The HF group tended to show a higher (P = 0.08) marbling score than the LF group whereas the HFCM group showed a higher marbling score than the LFCM group (P < 0.05). HDL was higher and LDL lower in groups fed with Cr-Met than in other groups whereas glucose showed the lowest value in HF group (P < 0.05). Triglyceride (TG), Cholesterol, PUN and total protein (TP) were the same among all treatment groups (P > 0.05). The Insulin concentration in the blood was significantly higher for the HFCM group than for the LF, LFCM and HF groups (P < 0.05). It is concluded that supplementation of chromium-methionine chelate could improve meat quality in beef steers.
机译：进行了一项饲喂试验，以确定两年中蛋氨酸铬（Cr-Met）的螯合物和牧草水平，增肥1和增肥2对生长的影响46名韩国本地人（Hanwoo，Bos Taurus，BW = 183±44 kg）的公牛参数、,体特征和血液代谢产物。治疗方法是：1）低草料（LF）组的Ste牛饲喂60％精饲料和40％草料组成的日粮； 2）高草料（HF）组的Ste牛饲喂由40％的精料和60％的草料组成的日粮。在第1次增肥期后，将ste牛皮（BW = 480±37.6 kg）随机分配到4个处理组：LF（第2次 40 F +不添加Cr-Met） sup>增肥期），LFCM（40LF加上在第二 增肥期间添加400 ppb的Cr-Met），HF（60 F加上在第二 nd < / sup>增肥期）和HFCM（60 F加上在第二 增肥期中添加400 ppb的Cr-Met）。在增高期和增肥期的第1天，治疗饮食的干物质摄入量没有差异（P> 0.05）。升高期的ADG在40 F和60 F组之间没有差异（P> 0.05）。 HF的rib体特征（包括肋眼面积和肉产量指数）高于其他处理组（P <0.05）。 HF组的大理石花纹得分倾向于比LF组更高（P = 0.08），而HFCM组的大理石花纹得分高于LFCM组（P <0.05）。 Cr-Met喂养组的HDL较高而LDL较低，而HF组的葡萄糖最低（P <0.05）。所有治疗组之间的甘油三酸酯（TG），胆固醇，PUN和总蛋白（TP）均相同（P> 0.05）。 HFCM组的血液中胰岛素浓度显着高于LF，LFCM和HF组（P <0.05）。结论是补充蛋氨酸铬螯合物可以改善牛肉的肉质。

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