滩羊土——草——畜系统中的微量元素及其意义

甘肃景泰滩羊典型产区草地土壤中含有Ｂｅ、Ｐｂ、Ｔｉ、Ｂａ、Ｍｎ、Ｇａ、Ｃｒ、Ｎｉ、Ｖ、Ｃｕ、Ｚｒ、Ｃｏ、Ｓｒ、Ｙ、Ｙｂ等１５种微量元素。草地混合牧草吸其中的１３种,其中Ｙｂ显著减少,缺少了Ｂｅ和Ｃｏ。羊毛中微量元素的种类和含量变化很大并且复杂。滩羊成年母羊毛中只含Ｐｂ、Ｔｉ、Ｍｎ、Ｃｕ等４种元素,而二毛期即１月龄羔羊毛中含有Ｂａ、Ｐｂ、Ｔｉ、Ｍｎ、Ｃｒ、Ｎｉ、Ｃｕ、Ｚｒ、Ａｇ、Ｚｎ、Ｓｒ、Ｍｏ和Ｙ     

香猪仔猪断奶前后血浆中微量元素含量的变化

应用ＩＣＰ／６５００－等离子扫描光谱仪检测了香猪断奶前后血浆中微量元素Ｆｅ、Ｚｎ、Ｃｕ、Ｍｎ、Ｍｏ、Ｃｏ的含量变化。结果发现，香猪血浆中Ｆｅ、Ｚｎ、Ｍｎ含量在断奶后有所增高，Ｃｕ则降低。Ｍｏ、Ｃｏ含量在断奶前后都低于检测线，表明含量甚微。     

两种荒漠土壤和牧草矿物元素含量的比较研究

对砾石和沙质２种不同的荒漠土壤和牧草矿物元素含量进行了分析,结果表明：砾石荒漠土壤和牧草中Ｆｅ,Ｃｏ,Ｍｏ含量极显著高于沙持荒漠（Ｐ〈０．０１）,牧草Ｃｕ：Ｍｏ仅为１．３：１,沙质荒漠牧草Ｃａ含量过高,Ｐ含量偏低,导致牧草中Ｃａ：Ｐ高达５０;１,同时发现,２种荒漠牧草中Ｓｅ,Ｍｎ,Ｚｎ含量均低于反刍动物的营养需要量,其原因可能与土壤中这些元素含量偏低有直接关系。     

江西省“中国黑白花乳牛”全血Se、Mo、Cu、Zn、Mn、Fe、Mg含量的研究

江西省“中国黑白花乳牛”全血Ｓｅ、Ｍｏ、Ｃｕ、Ｚｎ、Ｍｎ、Ｆｅ、Ｍｇ含量的研究周作红，戴清文，吴观友，樊璞，曾志明（江西农业大学牧医学院）（江西省畜牧局）微量元素对动植物都有重要的生理及病理意义，已为世人所公认。经世界各国微量元素研究工作者的长期努力...     

^60CO—γ射线辐照和高压熏蒸对SPF鸡饲料营养成分的影响

采用３．０Ｍｒａｄ＾６０ＣＯ－γ射线辐照和高压熏（１２１℃，２０ｍｉｎ）ＳＰＦ鸡饲料，并对处理后中料营养成分于试验后７天进行分析，辐照后７天粗蛋白、ＶＡ、ＶＤ３、ＶＥ、ＶＢ１、ＶＢ２、ＶＢ６、ＶＢ１２、Ｃｕ、Ｆｅ、Ｍｎ、Ｚｎ、Ｓｅ的损失率（％）依次为１．１、４．４、２．３、５．３、５．０、６．７、１０．０、０、０、０、。辐射后ＶＢ６、Ｃｕ、Ｆｅ、Ｍｎ、Ｚｎ、Ｓｅ的损失率（％）依次为９．７、１１．５     

不同月龄香猪血浆微量元素含量性别差异的探讨

应用ＩＣＰ／６５００等离子发射光谱对不同月龄香猪的日增重、血红蛋白含量和血浆微量元素含量进行了性别差异分析．结果表明，一月龄公猪日增重大于母猪，血红蛋白含量小于母猪，各性别猪血浆Ｆｅ、Ｚｎ、Ｃｕ、Ｍｎ含量无显著差异，二月龄公猪日增重小于母猪，血红蛋白含量亦小于母猪，公猪血浆Ｆｅ、Ｚｎ、Ｃｕ、Ｍｎ含量均大于母猪，而血浆Ｃｕ含量性别差异不大．不同月龄间比较结果表明，母猪生长速度较公猪快．二月龄各性别猪血红蛋白含量均高于一月龄；公猪血浆Ｆｅ、Ｚｎ、Ｃｕ、Ｍｎ含量差异显著（Ｐ＜０．０５），母猪则只有血浆Ｃｕ差异显著．     

微量元素对皱纹盘鲍生长的影响

1　试验材料基础鲍饵为大连湾海珍品养殖场鲍饵,其中不含微量元素预混料。麦饭石微粉产于辽宁阜新。微量元素预混料由(分析纯)ＦｅＳＯ4·7Ｈ2Ｏ、ＣｕＳＯ4·Ｈ2Ｏ、ＺｎＳＯ4·7Ｈ2Ｏ、ＭｎＳＯ4·Ｈ2Ｏ、ＣｏＳＯ4·7Ｈ2Ｏ配制而成,其中各微量元素含量见表1。试验用水槽(24ｍ×08ｍ×03ｍ)6个,每槽放波纹板一块(08ｍ×06ｍ)。试验在大连湾海珍品养殖场进行,试验用幼鲍由该场提供。试验用鲍鱼饵料的组成见表2。表1　微量元素预混料中微量元素含量　ｍｇ/ｋｇ微量元素含量微量元素含量Ｆｅ70Ｃｕ10Ｚｎ35Ｃｏ0.1Ｍｎ172　试验方法将基础鲍…     

微量元素、制粒和抗氧化剂对脂质酸败的影响

金属元素是脂质氧化酸败反应的重要催化剂。在配合饲料中最重要的是Ｃｕ、Ｆｅ、Ｚｎ和Ｍｎ ,它们在配合饲料中的添加量很大（与油脂中含量相比） ,如仔猪配合饲料中Ｃｕ的添加量可达３５０ｍｇ／ｋｇ,Ｚｎ的添加量更可高达３０００ｍｇ／ｋｇ或以上（来自ＺｎＯ） ,这些金属元素在饲料中的催化效力如何 ,以及它们是否在相互作用 ,国内外的报道很少。加工对饲料脂质酸败影响的研究主要集中于膨化（Ｐｅｉｓｋｅｒ,１９９３;Ｒａｏ,１９８９） ,缺乏对制粒影响的研究。本研究旨在①探讨配合饲料微量元素（Ｃｕ、Ｆｅ、Ｚｎ、Ｍｎ）的不同…     

喷施微量营养元素对沟叶结缕草草坪质量的影响

研究了亚热带来红壤区沟叶结缕草草坪对微量元素的反应。结果表明，施Ｂ、Ｍｏ、Ｚｎ能够显著提高草坪质量；施Ｆｅ、Ｃｕ的作用不明显，其临界值可能更低；Ｍｎ含量丰富，施Ｍｎ有毒害作用。     

扬子鳄无机元素的初步研究

本文用电感耦合等离子发射光谱法（ＩＣＰ－ＡＥＳ）测定了扬子鳄主要组织和器官中的２１种无机元素：Ｋ、Ｎａ、Ｃａ、Ｍｇ、Ｐ、Ｆｅ、Ｚｎ、Ｃｕ、Ｍｎ、Ｃｒ、Ｍｏ、Ｃｏ、Ｎｉ、Ｓｒ、Ａｓ、Ａｌ、Ｂａ、Ｌｉ、Ｃｄ、Ｐｂ、Ｂｅ。为研究扬子鳄生物学及保护学提供了生物无机化学领域方面的资料。     

电感耦合等离子-质谱法测定饲料中钠、镁、铬、锰、铁、铜、锌、砷、硒、镉和铅

应用电感耦合等离子-质谱技术(ICP-MS),建立饲料中钠、镁、铬、锰、铁、铜、锌、砷、硒、镉和铅等元素的测定方法。对饲料样品的前处理方法、仪器工作参数和11种元素标准曲线进行优化;并以加标回收、分析方法比对和重复测试说明方法的准确性和精密性。方法在0～1 000 ng/ml范围内线性良好,仪器检出限为0.557 7～5.072 ng/ml,具有良好的精密度,其回收率在88.1%～104.4%之间,相对标准偏差小于5.0%。同时与原子吸收和原子荧光方法进行比对,测定结果相近。所建立的方法简单、快速,可替代原子吸收和原子荧光方法测定饲料中的11种金属元素,为饲料的质量控制提供理想的元素分析方法。     

Supplementation of broodmares with copper, zinc, iron, manganese, cobalt, iodine, and selenium

In experiment 1, 6 pregnant mares received a concentrate that contained a trace mineral premix that provided 14.3 mg Cu, 40 mg Zn, 28 mg Fe, 28 mg Mn, 0.08 mg Co, 0.16 mg I, and 0.16 mg Se/kg concentrate (group A). Seven mares received the same concentrate plus 502 mg Zn and 127 mg Cu once daily (group B). No differences (P > .05) in foal growth data, or Cu, Zn, and Fe concentrations of mare milk, mare serum, or foal serum were observed. In experiment 2, 6 pregnant mares received the same concentrate as group A (group C), and 8 mares received the same concentrate fortified with 4× the trace mineral premix (group D). Group C mares had higher serum Zn concentration at 1 day (P < 0.01) and 56 days (P < 0.04). Group C mares had higher milk Fe concentration at 28 days (P < .01), and group D mares had higher milk Cu concentration at 56 days (P < .01). Group C foals had higher serum Cu concentration at 14 days (P < .03). The results from this study provide no evidence to indicate that supplementing late gestating and lactating mares with higher dietary trace mineral levels than those recommended currently by NRC has any influence on foal growth and development, or on the Cu, Zn, and Fe concentrations of the mare milk, mare serum, or foal serum.     

Comparisons of Angus, Charolais, Galloway, Hereford, Longhorn, Nellore, Piedmontese, Salers, and Shorthorn breeds for weight, weight adjusted for condition score, height, and condition score of cows

Breed differences for weight (CW), height (CH), and condition score (CS) were estimated from records (n = 12,188) of 2- to 6-yr-old cows (n = 744) from Cycle IV of the U.S. Meat Animal Research Center's Germplasm Evaluation (GPE) Program. Cows were produced from mating Angus and Hereford dams to Angus, Hereford, Charolais, Shorthorn, Galloway, Longhorn, Nellore, Piedmontese, and Salers sires. Samples of Angus and Hereford sires were 1) reference sires born from 1962 through 1970 and 2) 1980s sires born in 1980 through 1987. The mixed model included cow age, season of measurement and their interactions, year of birth, pregnancy-lactation code (PL), and breedgroup as fixed effects for CW and CS. Analyses of weight adjusted for condition score included CS as a linear covariate. The model for CH excluded PL. Random effects were additive genetic and permanent environmental effects associated with the cow. Differences among breed groups were significant (P < 0.05) for all traits and were maintained through maturity with few interchanges in ranking. The order of F1 cows for weight was as follows: Charolais (506 to 635 kg for different ages), Shorthorn and Salers, reciprocal Hereford-Angus (HA) with 1980s sires, Nellore, HA with reference sires, Galloway, Piedmontese, and Longhorn (412 to 525 kg for different ages). Order for height was as follows: Nellore (136 to 140 cm), Charolais, Shorthorn, Salers, HA with 1980s sires, Piedmontese, Longhorn, Galloway and HA with reference sires (126 to 128 cm). Hereford and Angus cows with reference sires were generally lighter than those with 1980s sires. In general, breed differences for height followed those for weight except that F1 Nellore cows were tallest, which may in part be due to Bos taurus-Bos indicus heterosis for size.     

液相色谱-串联质谱法测定动物尿液中11种β-受体激动剂残留量的不确定度评估

采用液相色谱-串联质谱法测定动物尿液中11种β-受体激动剂残留量,对标准溶液、体积、质谱峰面积、浓缩过程及回收率等测定不确定度因素进行了分析,通过评定各不确定度分量及标准不确定度,得出11种β-受体激动剂的扩展不确定度在0.7 ～ 1.1 ng/mL范围内.由各因素对合成不确定度的贡献比分析可知,影响较大的因素为试验回收率及标准溶液浓度.     

Granulocyte isolation from whole blood of goat, sheep, cattle, horse, dog, pig, and man

A simple two step procedure for the isolation of caprine, ovine, bovine, equine, canine, porcine and human peripheral blood granulocytes is described. After enrichment of granulocytes by centrifugation, contaminating erythrocytes are lysed hypotonically. Recovery, purity, and viability of the granulocyte suspensions are determined. FACScan analysis of the cell suspensions measuring cellular size by forward and sideward light scatter is compared with the corresponding analysis of whole blood leukocytes. Constituencies of the isolated cell suspensions and loss of granulocyte subpopulations through isolation procedure is discussed with regard to granulocyte function assays.