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<正>在奶牛业生产中,奶牛乳房炎是一种病因复杂的、造成奶牛业经济损失严重的乳腺疾病。国内外资料显示,各种类型的奶牛乳房炎尤其是隐性乳房炎的发病数约占泌乳期奶牛总数的1/3[1]。近年来,奶牛乳房炎的研究取得了积极进展,对于提高生产率、减少经 相似文献
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<正> 奶牛采食的是草和料,产出的却是高蛋白乳汁,牛奶已成为现代人的重要营养食品。但是乳房炎对奶牛生产的危害极大,发达国家每年造成的损失都有一、二十亿美元之多。日本北海道奶牛业比较发达,但同样面临着乳房炎的巨大损害,据千岁市兽医诊疗所野村先生介绍,乳房炎在千岁地区发病率约占发病总数的30%,为临床诸症之首,每头乳房炎病牛平均治疗费高达12000日元(相当于人民币现钞700~900元),在一个泌乳期中,奶量损失约达10%~20%。由此可见,奶牛乳房炎防治的重要性。 相似文献
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2002年1月至2003年10月,对苏北盐城地区几个不同饲养环境的奶牛场进行隐性乳腺炎的SMT(上海乳腺炎检验法)检测,结果显示:不同的乳区、有无运动场、原发病情况、发病是否隔离等条件的差异,隐性乳腺炎的发生率存在明显差异;不同的季节、挤奶方式、饲料的营养状况与隐性乳腺炎的发生率没有明显的关系。 相似文献
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M Vandeplassche 《Tier?rztliche Praxis》1985,13(4):513-517
The diagnosis of Mycoplasma bovis mastitis (MbM) usually comes too late. Consequently the capital early symptoms are described for a probable diagnosis in order to enable prophylactic measures and to prevent ineffective expensive treatments and loss of time. Following a definite diagnosis of MbM by culture, a repeated application of the CMT milk test combined with bacteriological culture detects infected cows and they should be culled. All cows of exceptional breeding value can be treated by repeated intramammary infusions of specific antimycoplasma antibiotics with a fair chance of healing, by preference during the dryudder period. 相似文献
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大黄鱼常见疾病的防治 总被引:1,自引:0,他引:1
本文在对大黄鱼(Pseudosciaena crocea)的疾病种类、主要症状、病理变化等调查研究的基础上,提出了大黄鱼的主要病害和防治方法。 相似文献
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海龟是国家二级保护动物,对海龟的常见的疾病及病因并就起防治方法进行了简单的阐述,有利于我们更好地保护海龟,为进一步开展海龟其他方面的研究打下良好的基础. 相似文献
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P V Miettinen 《Tier?rztliche Praxis》1992,20(2):149-152
The effect of two different feeding regimes on energy metabolism and fertility was studied in dairy cows. The cows were divided according to the type of feed into a hay-urea and a silage group. Ketone body levels in blood were used as indicators of energy balance. Intake of dry matter and of energy was lower in the silage group than in the hay-urea group. The energy balance had almost equilibrated in the hay-urea group at 50 days p.p., in contrast to that of the silage group. The ketone body levels were lower in the hay-urea group than in the silage group in early lactation. The cows in the hay-urea group had a shorter interval from calving to first insemination and to conception than those in the silage group. Low energy level in the late puerperal period had an adverse effect on fertility. The higher the level of ketone bodies at day 50 p.p., the lower the fertility of the cows is likely to be. 相似文献
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介绍了链,鲫细菌性败血症的病原,症状及在章丘市的流行情况,采取清塘排水,消毒鱼等措施可预防此病。全池泼洒鱼虾安,鱼虾宁,半呋喃唑酮拌在面糊中制成药饵,然后拌在麦麸,豆饼中投喂,收到较好治疗效果。 相似文献