Radiographically Detectable Soft Tissue Calcification in Chronic Renal Failure

Soft tissue calcification is known to occur in association with chronic renal failure. This soft tissue calcification is frequently recognized microscopically, but infrequently identified radiographically. This paper reviews the role of chronic renal failure in soft tissue calcification and presents three case histories of chronic renal failure in dogs in which soft tissue calcification of the stomach, kidneys, and footpads was detected radiographically. In all three dogs, gastric-wall mineralization was visible radiographically as thin, linear, mineralized densities. Renal mineralization was seen radiographically in two of the dogs. One of the dogs had nodular mineral deposits in the footpads of all feet. Although microscopy confirmed the soft tissue calcification of these and other structures, there was poor correlation between microscopic and radiographic degrees of visceral soft tissue calcification. There was also poor correlation between the degree of calcium and phosphate imbalance and the extent of radiographic evidence of soft tissue calcification.     

温度对醉马草内生真菌共生体幼苗生长和生物碱产量的影响

研究了不同温度(8℃/5℃、15℃/12℃、22℃/15℃、28℃/25℃、35℃/28℃)处理对醉马草内生真菌共生体幼苗的形态指标、叶绿素、可溶性糖以及麦角酰胺和麦角新碱含量的影响,以期明确共生体幼苗生长和产碱的最适温度。结果表明,株高、根长和生物量均在22℃/15℃处理下达到最大,其中株高显著(P0.05)高于其它4个处理,根长显著(P0.05)高于28℃/25℃和35℃/28℃处理,生物量显著(P0.05)高于8℃/5℃、28℃/25℃和35℃/28℃处理,分蘖在15℃/12℃处达到最大,显著(P0.05)高于8℃/5℃、28℃/25℃和35℃/28℃处理。叶绿素在22℃/15℃处理下达到最大,显著(P0.05)高于8℃/5℃、15℃/12℃和35℃/28℃处理。可溶性糖在5个温度处理下差异不显著(P0.05)。在处理时间为15 d时,麦角酰胺和麦角新碱含量均在22℃/15℃处理下达到最大。综上所述,最适宜共生体幼苗生长、麦角酰胺和麦角新碱积累的处理温度是22℃/15℃。     

不同激素处理富源本地黄牛与短本杂一代黄牛同期发情试验

为了比较不同品种的黄牛用不同激素处理后的同期发情效果,以筛选出适合本地不同牛群及环境的较优杂交方案.将137头健康空怀黄母牛(其中本地黄母牛72头,短本杂一代黄母牛65头)分为4个组,第1、2组为本地黄母牛,第3、4组为短本杂一代黄母牛,分别用2种不同的方法进行同期发情处理.第1、3组注射三合激素;第2、4组注射促排3号-氯前列烯醇-促排3号.结果表明,第1组、第2组、第3组、第4组经不同的激素处理后,发情率分别为59.38%、87.5%、58.62%、86.11%,第2组的发情率显著高于第1组(P＜0.05),第4组的发情率显著高于第3组(P＜0.05),而第1组和第3组、第2组和第4组的发情率差异不显著(P＞0.05).结果提示发情率的高低与品种的相关性不大,促排3号-氯前列烯醇-促排3号可能是较适合富源黄母牛的同期发情方案.     

Vecuronium bromide,phenylephrine and atropine combinations as mydriatics in juvenile double-crested cormorants (Phalacrocorax auritus)

Topical vecuronium bromide (Norcuron) and combinations with atropine and phenylephrine, were evaluated as mydriatics in juvenile double-crested cormorants (Phalacrocorax auritus). Nine cormorants were treated with each of four protocols: 1% atropine; 4 mg/mL vecuronium bromide (total 0.16 mg/eye); atropine with vecuronium; and atropine, 2.5% phenylephrine, followed by vecuronium. Drugs were applied topically at 15-min intervals (0.01 mL/drop). Pupil diameter was measured manually every 15 min with a pupil gauge calibrated to the nearest 0.5 mm. No effect was observed with atropine alone. Average +/- SD peak pupil diameter for vecuronium, atropine/vecuronium, and atropine/phenylephrine/vecuronium were 5.4 +/- 1.1 mm, 5.7 +/- 0.8 mm and 6.2 +/- 0.4 mm, respectively; and duration of peak diameters were 38 +/- 28 min, 79 +/- 71 min and 103 +/- 58 min, respectively. The combined atropine, phenylephrine and vecuronium provided the most consistent dilation with larger average pupil size and longer average duration. No side-effects from vecuronium were observed in these birds.     

一年生禾草喷施增产菌效果试验

对两种一年生禾草喷施增产菌的效果进行了研究。结果表明,叶面喷雾可促进燕麦的生殖生长,籽实提前成熟２￣５ｄ,籽实产量比对照提高２１．７％,纯增收３２５．５０元,产投比为６．１：１．０,高粱鲜草产量比对照提高２９．０％,纯增收５８６．５０元,产投比为１０．１：１．０,拌种＋叶面喷雾对燕麦分蘖有促进作用,可明显提高鲜草产量,纯增收最高可达２５３．５０元,产投比最高可达４．３：１．０。     

不同旋毛虫隔离种在猪体内的分布

本文研究了黑龙江省猪旋毛虫和国际标准株旋毛形线虫（Trichinella spiralis)在猪体内的分布情况，结果表明，猪旋毛虫和T.spiralis在猪体内寄生寄生密度较大的部位是：膈肌、舌肌、咬肌、腓肠肌、肩胛肌、肋间肌、颈肌、前腿肌，臀肌和背最长肌寄生密度较小。     

微量补体结合试验检测牛、羊副结核病的研究

采用《中华人民共和国出入境检验检疫行业标准》“副结核病补体结合试验操作规程”方法(简称常量法)和微量补体结合试验(简称微量法)检测3677头进口牛羊的副结核病抗体并进行比较。结果表明，常量法和微量法的溶血素效价测定值相同，补体效价测定值近似，阴性血清对照、抗原对照、补体对照、红细胞对照、血清抗补体结合对照结果均相同，阳性对照血清效价微量法比常量法提高1个滴度，被检血清的阳性检出率微量法高于常量法。比较37℃水浴及37℃恒温培养箱环境下的微量法补体结合试验结果，溶血素效价、补体效价、各项对照试验结果完全相同，被检血清在37℃水浴反应更加充分。比较用变态试验和补体结合试验检验3677头牛羊副结核病的结果、以及用补体结合试验、变态反应和酶联免疫吸附试验方法同时检测2024头牛的结果，发现它们的相关性很小。     

Chemical characteristics and relative bioavailability of supplemental organic zinc sources for poultry and ruminants

Eight commercially available organic Zn products and reagent-grade ZnSO4 x 7H2O (Zn Sulf) were evaluated by polarographic analysis, and solubility in .1 M K2HPO4-KH2PO4 buffer (pH 5), .2 M HCl-KCl buffer (pH 2), and deionized water. Fractions from these solubility tests were evaluated by gel filtration chromatography for structural integrity. Degree of chelation was generally positively related to chelation effectiveness determined by polarography. The organic sources were Zn methionine complex A (Zn MetA), Zn methionine complex B (Zn MetB), Zn polysaccharide complex (Zn Poly), Zn lysine complex (Zn Lys), Zn amino acid chelate (Zn AA), Zn proteinate A (Zn ProA), Zn proteinate B (Zn ProB), and Zn proteinate C (Zn ProC). Three experiments were conducted to estimate the relative bioavailability of Zn from the organic Zn supplements for chicks and lambs when added at high dietary levels to practical diets. Bone Zn concentration increased (P < .001) as dietary Zn increased in both experiments. When Zn Sulf was assigned a value of 100% as the standard, multiple linear regression slope ratios of bone Zn from chicks fed 3 wk regressed on dietary Zn intake gave estimated relative bioavailability values of 83 +/- 14.6 and 139 +/- 16.9 for Zn AA and Zn ProA, respectively, in Exp. 1 and 94 +/- 11.6, 99 +/- 8.8, and 108 +/- 11.4 for Zn Poly, Zn ProB, and Zn ProC, respectively, in Exp. 2. In Exp. 3, 42 lambs were fed diets containing Zn Sulf, Zn ProA, Zn AA, or Zn MetB for 21 d. Based on multiple linear regression slope ratios of liver, kidney, and pancreas Zn and liver metallothionein concentrations on added dietary Zn, bioavailability estimates relative to 100% for Zn Sulf were 130, 110, and 113 for Zn ProA, Zn AA, and Zn MetB, respectively. Except for Zn ProA, which was greater, the organic Zn supplements had bioavailability values similar to that of Zn Sulf for chicks and lambs. Bioavailability of organic Zn products was inversely related to solubility of Zn in pH 5 buffer in chicks (r2 = .91) and pH 2 buffer in lambs (r2 = .91), but not to an estimate of degree of chelation.     

霉菌毒素对家禽生产的影响

<正>霉菌毒素是霉菌以饲料为营养源的生长过程中所产生的有毒化学物质。在谷物收割前或贮存、运输、加工和饲喂过程中,霉菌都可在其中生长并产生霉菌毒素。全球每年大约有25%的农作     

浙江中华蜜蜂微卫星遗传多样性分析

浙江是中华蜜蜂的传统饲养区,本研究对浙江中华蜜蜂的微卫星遗传多样性进行了初步分析。结果发现浙江中华蜜蜂的遗传多样性较低,因此有必要对其采取更加有效的保护措施。