BARIUM SULFATE BRONCHOGRAPHY IN HORSES

Barium sulfate bronchograms were performed on four 454-kg (1000-lb), adult, mixedbreed horses. Approximately 100 ml of 100% w/v premixed barium sulfate suspension was insufflated into a caudodorsal portion of one lung. Excellent bronchograms were obtained through six generations of bronchial divisions. Bronchograms of diagnostic quality were present for at least 30 minutes. Radiographs at 24 hours showed that most of the barium had been removed from the lung. At 48 hours, tiny barium nodules were essentially all that remained. One hundred and thirty milliliters of barium sulfate initially resulted in overfilling of the bronchial tree and prolonged retention of the contrast medium. Six weeks after bronchography, histopathologic examination of the perfused fixed lungs of two horses showed a very mild inflammatory response to the barium. One of the four horses received two barium sulfate bronchograms. This horse was observed and found to be free of any side effects for 15 months after the second bronchogram.     

蛋鸡耐热力与血清酶活性的关系

用40只京白蛋鸡 ,测定其在常温及梯度升温情况下5种血清酶的活性 ,并在40℃下热应激致死 ,计算致死时间 ,以致死时间长短为耐热力的高低 ,分析了蛋鸡耐热力与血清酶之间的关系。结果表明 :蛋鸡耐热力与常温时乳酸脱氢酶和肌酸磷酸激酶活性呈中度负相关 ,与其他3种酶均呈弱相关 ,此5种酶均不宜作耐热指标     

几种抗生素替代品对泰和乌骨鸡免疫功能影响的研究

泰和乌骨鸡又称丝毛乌骨鸡,其肉质纤嫩、味美而滋补,具有特殊的药用保健价值,2001年已列为农业部首批87个国家级畜禽保护品种之一。并已列入江西省畜牧业2010年远景规划,作为最重要的一条禽产品产业链。但是,在发展泰和乌骨鸡生产的过程中,乱用和滥用饲料药物添加剂,使药物在鸡体内大量残留,并产生耐药菌株和抗药性,导致细胞免疫和体液功能下降及鸡的药用价值和滋补作用下降。本研究探讨了几种抗生素替代品对泰和鸡免疫功能的影响,为提高泰和鸡药用价值、滋补作用及生产性能提供科学依据。选择健康的465只泰和鸡,随机分为5组,即1个常规抗生…     

THE EFFECT OF BARIUM TEMPERATURE ON ESOPHAGEAL AND GASTRIC MOTILITY IN DOGS

The influence of barium temperature on canine esophageal transit time and gastric motility were studied fluoroscopically. Micropulverized barium sulfate (30% wt/vol) at 35°F, 70°F, and 100°F was given orally to each of five dogs with a minimum of two hours between each temperature. Esophageal transit times ranged from 4 to 9.67 seconds, and gastric contractions average four per minute. Barium temperature had no significant effect on either esophageal transit time or gastric motility.