首页> 外文会议>International Symposium on the Nutrition of Herbivores(ISNH-7); 20070917-22; Beijing(CN) >Effect of copper and zinc on blood and milk parameters and performance of dairy cows
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Effect of copper and zinc on blood and milk parameters and performance of dairy cows

机译:铜和锌对奶牛血液和牛奶参数及生产性能的影响

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Thirty fives Holstein cows were chosen to study the blood biochemical indicators with a single-factor test design in three copper levels (21.5, 31.5 and 41.5 mg/kg) and three zinc levels (50.15, 90.15 and 130.15 mg/kg). The results showed that the supplement of 20 mg of Cu/kg DM and above 40 mg of Cu/kg DM may increase Cu-Zn-superoxide dismutase (Cu-Zn-SOD) in milk (PO.05), but did not increase milk yield and improve chemical composition (P>0.05). Zinc concentration in milk could be higher as supplemented 80 mg of Zn/kg DM (P<0.05). The concentration of copper, serum ceruloplasmin, haemoglobin and the activity of Cu-Zn-SOD in blood may be increased (P<0.01) by 37, 60, 5.1 and 5.9%, respectively, as the supplement of dietary copper was above 31.5 mg/kg.
机译:选择三十五只荷斯坦奶牛,以单因素测试设计研究三种铜水平(21.5、31.5和41.5 mg / kg)和三种锌水平(50.15、90.15和130.15 mg / kg)的血液生化指标。结果表明,补充20 mg Cu / kg DM和高于40 mg Cu / kg DM可以增加牛奶中的铜锌超氧化物歧化酶(Cu-Zn-SOD)(PO.05),但不会增加产奶量提高,化学成分改善(P> 0.05)。补充80 mg Zn / kg DM可使牛奶中的锌浓度更高(P <0.05)。当饮食中添加的铜超过31.5 mg时,血液中的铜,血清铜蓝蛋白,血红蛋白浓度和Cu-Zn-SOD活性分别可增加37%,60%,5.1%和5.9%(P <0.01),(P <0.01)。 /公斤。

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