The aim of this study was to study the distribution of Selenium （Se） and Mercury （Hg） in feed and drinking water in Heilongjiang Province and the effect on body of beef cattle. The experiment selected four areas o...The aim of this study was to study the distribution of Selenium （Se） and Mercury （Hg） in feed and drinking water in Heilongjiang Province and the effect on body of beef cattle. The experiment selected four areas of Qiqihar, Harbin, Jixi and Hegang Cities in Heilongjiang Province. In each area, a pasture was selected. Five beef cattle from each ranch were collected. At the same time, blood, liver, muscle, kidney, urine and faece of the cattle were collected, as well as drinking water, feed and formula feed from the ranch. The contents of Se and Hg in the collected samples were detected by inductively coupled plasma mass spectrometry. The results showed that the contents of Se in liver, kidney, urine and blood of beef cattle were increased with the increase of Se contents in drinking water, while the contents of Se in muscle tissue and manure were decreased. When the contents of Se in feed increased, the contents of them in muscle, manure and liver of beef cattle were increased frst and then decreased, while the contents of Se in kidney, urine and blood were decreased frst and then increased. When Hg contents in drinking water were increased, the contents of them in beef cattle tissue, blood and manure were increased frst and then decreased, and the contents of Se in urine were increased frst and them decreased. And when Hg contents in feed increased, the contents of Se and Me were also increased. In conclusion, Se and Hg contents in these areas were within the safety standards, meanwhile, the contents of Se and Hg in body tissues of beef cattle were affected to varying degrees by the contents of selenium and mercury in feed.展开更多
研究旨在利用荟萃分析(Meta分析)探究莫能菌素对牛、羊生长性能、养分表观消化率、瘤胃发酵参数和血液生化指标的影响。通过检索中国知网(CNKI)、PubMed和Web of Science等中外文数据库,查找2000年1月—2023年5月在牛羊试验中添加莫能...研究旨在利用荟萃分析(Meta分析)探究莫能菌素对牛、羊生长性能、养分表观消化率、瘤胃发酵参数和血液生化指标的影响。通过检索中国知网(CNKI)、PubMed和Web of Science等中外文数据库,查找2000年1月—2023年5月在牛羊试验中添加莫能菌素的随机对照试验。依据纳入和排除标准,共纳入125篇文献。结果表明:①饲粮中添加莫能菌素显著提高羊平均日增重(MD=0.02,95%CI:0.00~0.03,P<0.05)、牛平均日增重(MD=0.06,95%CI:0.03~0.08,P<0.05),显著降低羊有机物摄入量(MD=-0.09,95%CI:-0.10~-0.08,P<0.05)、牛有机物摄入量(MD=-0.34,95%CI:-0.66~-0.02,P<0.05)、羊的干物质采食量(MD=-0.02,95%CI:-0.03~-0.02,P<0.05)和粗蛋白摄入量(MD=-0.01,95%CI:-0.02~-0.01,P<0.05);②饲粮中添加莫能菌素显著提高牛的粗蛋白消化率(MD=1.47,95%CI:0.76~2.17,P<0.05);③饲粮中添加莫能菌素显著降低羊瘤胃甲烷生成量(MD=-1.93,95%CI:-2.63~-1.23,P<0.05)、乙酸生成量(MD=-4.81,95%CI:-7.47~-2.16,P<0.05)和牛瘤胃乙酸生成量(MD=-1.95,95%CI:-3.34~-0.56,P<0.05),显著提高羊瘤胃丙酸生成量(MD=2.14,95%CI:0.95~3.33,P<0.05)和牛瘤胃丙酸生成量(MD=2.27,95%CI:1.18~3.36,P<0.05);④饲粮中添加莫能菌素显著提高牛血清中总胆固醇含量(MD=0.19,95%CI:0.05~0.32,P<0.05)。综上所述,莫能菌素可以提高牛、羊的日增重、饲料转化率,改变瘤胃发酵模式,降低CH4排放。展开更多
基金Supported by"Beef Cattle Safety Production Technology Innovation Integration and Demonstration"(2014BAD13B03-1)from the National Science and Technology Support Program"Beef Safety Production Technology Integration and Demonstration"
文摘The aim of this study was to study the distribution of Selenium （Se） and Mercury （Hg） in feed and drinking water in Heilongjiang Province and the effect on body of beef cattle. The experiment selected four areas of Qiqihar, Harbin, Jixi and Hegang Cities in Heilongjiang Province. In each area, a pasture was selected. Five beef cattle from each ranch were collected. At the same time, blood, liver, muscle, kidney, urine and faece of the cattle were collected, as well as drinking water, feed and formula feed from the ranch. The contents of Se and Hg in the collected samples were detected by inductively coupled plasma mass spectrometry. The results showed that the contents of Se in liver, kidney, urine and blood of beef cattle were increased with the increase of Se contents in drinking water, while the contents of Se in muscle tissue and manure were decreased. When the contents of Se in feed increased, the contents of them in muscle, manure and liver of beef cattle were increased frst and then decreased, while the contents of Se in kidney, urine and blood were decreased frst and then increased. When Hg contents in drinking water were increased, the contents of them in beef cattle tissue, blood and manure were increased frst and then decreased, and the contents of Se in urine were increased frst and them decreased. And when Hg contents in feed increased, the contents of Se and Me were also increased. In conclusion, Se and Hg contents in these areas were within the safety standards, meanwhile, the contents of Se and Hg in body tissues of beef cattle were affected to varying degrees by the contents of selenium and mercury in feed.
文摘研究旨在利用荟萃分析(Meta分析)探究莫能菌素对牛、羊生长性能、养分表观消化率、瘤胃发酵参数和血液生化指标的影响。通过检索中国知网(CNKI)、PubMed和Web of Science等中外文数据库,查找2000年1月—2023年5月在牛羊试验中添加莫能菌素的随机对照试验。依据纳入和排除标准,共纳入125篇文献。结果表明:①饲粮中添加莫能菌素显著提高羊平均日增重(MD=0.02,95%CI:0.00~0.03,P<0.05)、牛平均日增重(MD=0.06,95%CI:0.03~0.08,P<0.05),显著降低羊有机物摄入量(MD=-0.09,95%CI:-0.10~-0.08,P<0.05)、牛有机物摄入量(MD=-0.34,95%CI:-0.66~-0.02,P<0.05)、羊的干物质采食量(MD=-0.02,95%CI:-0.03~-0.02,P<0.05)和粗蛋白摄入量(MD=-0.01,95%CI:-0.02~-0.01,P<0.05);②饲粮中添加莫能菌素显著提高牛的粗蛋白消化率(MD=1.47,95%CI:0.76~2.17,P<0.05);③饲粮中添加莫能菌素显著降低羊瘤胃甲烷生成量(MD=-1.93,95%CI:-2.63~-1.23,P<0.05)、乙酸生成量(MD=-4.81,95%CI:-7.47~-2.16,P<0.05)和牛瘤胃乙酸生成量(MD=-1.95,95%CI:-3.34~-0.56,P<0.05),显著提高羊瘤胃丙酸生成量(MD=2.14,95%CI:0.95~3.33,P<0.05)和牛瘤胃丙酸生成量(MD=2.27,95%CI:1.18~3.36,P<0.05);④饲粮中添加莫能菌素显著提高牛血清中总胆固醇含量(MD=0.19,95%CI:0.05~0.32,P<0.05)。综上所述,莫能菌素可以提高牛、羊的日增重、饲料转化率,改变瘤胃发酵模式,降低CH4排放。
