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任何一种抗球虫药都不能对所有鸡球虫种类有同等的抗球虫效果,在实际中应当清楚地了解各种抗球虫药的最适抗球虫谱,并且诊断出球虫病的感染球虫种类,才能合理地使用抗球虫药且最大限度地发挥抗球虫效果。 相似文献
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球虫病是重要的禽病之一。侵袭雏鸡,往往呈急性暴发,可引起雏鸡腹泻、贫血,以致大批死亡;慢性流行可影响生长,增加饲料消耗。目前,预防和治疗球虫病多采用抗球虫药物。1抗球虫药物的选择1.1选用高效、耐药性低的药物抗球虫药的种类很多,一般可分为离子载体抗生素类和化学合成类 相似文献
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<正>常用抗球虫药物主要有莫能菌素、盐霉素钠、拉沙洛西钠、赛杜霉素、海南霉素钠、地克珠利、托曲珠利、二硝基类、尼卡巴嗪、磺胺喹沙啉、磺胺间甲氧嘧啶、磺胺氯吡嗪钠、氨丙啉、氯苯胍、常山酮、 相似文献
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韩国省 《河南畜牧兽医(综合版)》2012,(2):21-22
鸡球虫病是重要的禽病之一。常侵袭雏鸡。往往呈急性暴发,引起雏鸡下痢、便血、贫血,以致大批死亡;慢性流行可影响发育,影响增重,并增加饲料消耗。现阶段在预防和治疗时多采用抗球虫药物。应用抗球虫药物时应注意以下几个方面。 相似文献
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1正确使用抗球虫药,控制鸡球虫病的发生 抗球虫药总体上可分为二大类,即聚醚类离子载体抗生素和化学合成药。化学抗球虫药通常有一个较广的活性范围,但它具有较大的产生抗药性的可能,且它仅能产生有限的免疫,有时还有毒性,通常它比离子载体类药物贵。化学合成药和离子载体类药交替使用可以延长一些化学药物,如尼卡巴嗪的使用寿命。四种最常用的化学药物是:尼卡巴嗪、氯苯胍、速丹和杀球灵。尼卡 相似文献
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鸡球虫存在非常普遍,对养禽业危害十分巨大。鸡球虫病主要感染3月龄以内的鸡,不同日龄鸡的球虫发病率统计表明,0~14日龄的鸡发病率为20%,15~50日龄高达85%,51~100日龄下降到54%,100~140日龄仅为30%。常见感染鸡的球虫有7种,虽然各种球虫生活史相似,但在寄生部位、致病性和卵囊大小等方面有差别,其中以柔嫩和毒害艾美耳球虫致病力最强,而堆型、巨型、和缓艾美耳球虫虽很常见,但致病性弱,布氏艾美耳球虫虽很少见,但具有高度致病性。自然感染球虫的病例多是几个虫种的混合感染,与单纯感染比较致病性更强,危害性更大。 相似文献
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鸡病的诊断,特别是传染性疾病的诊断,单纯依靠临床症状、病理剖检观察,往往很难作出确诊,为了尽快确诊疾病,常需要采取病料送到检验室做微生物学、寄生虫学或病理组织学检查.病料的采取、保存和送检是否妥当,对快速检验结果有极大的关系,应认真做好此项工作. 相似文献
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Utility pigeons on 3 farms were affected by a severe neurological disturbance manifested by fine tremors, rolling gait and incoordination. Affected birds had necrosis of the Purkinje cells of the cerebellar cortex. The birds from the 3 farms had been fed a pelleted diet obtained from a single mix of feed prepared by a stockfeed manufacturer. When feed obtained from the farms was given to utility pigeons under controlled conditions at the laboratory, they suffered the same clinical signs and lesions as seen in birds from the farms. Cross-bred cockerels were not affected when given this feed from day-old to 6 weeks of age. Samples of the feed contained 185 to 226 ppm of the coccidiostat dinitolmide. Utility pigeons given a prepared diet containing a similar level (234 ppm) of dinitolmide developed an identical condition after 3 to 4 weeks feeding. Laying hens were not affected by this feed. Dimetridazole, which was also present in some of the original feed samples, did not exacerbate the condition when included in the diet at a rate of 233 ppm. Production of squabs from the affected farms was dramatically reduced, and many of the breeder had to be culled because of the long-standing neurological disease. 相似文献
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Twenty coccidia-free Holstein bull calves were allotted to groups to study effects of treatment with lasalocid and decoquinate on subsequent resistance to coccidiosis (Eimeria spp infections). Calves fed medicated rations of either drug at dosages of 50 mg/kg of feed (approx 1.2 mg/kg of body weight) had significantly fewer oocysts (P less than 0.01) than did nontreated controls regardless of other procedures used. Treated calves premunized with 2,000 oocysts/day for 5 days and later challenge inoculated with 200,000 oocysts did not develop diarrhea, unless the drugs were withdrawn from feed. Animals premunized (2,000 oocysts/day for 5 days) in absence of drug were no more resistant to the challenge inoculation than nonpremunized animals. These results indicated that lasalocid and decoquinate were efficacious coccidiostats and protected calves as long as they were administered. Cessation of drug treatment usually resulted in appearance of oocysts in feces and diarrhea. Premunization alone cannot be expected to prevent coccidiosis when animals are exposed to large numbers of oocysts. 相似文献
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与动物的常规饲料生产相反,预混料添加剂的加工是一件精细的工作。在预混料添加剂的整个生产过程中,既要确保其具有较高的精确性,又必须将交叉污染风险降至最低程度。本文我们将对添加剂和载体的特性进行详细的论述,至于预混料的加工特性将在下一篇文章中予以介绍。 相似文献
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在上一篇文章《(Feed Tech》Vol.11,№5:30-31,译文见本刊总第28卷(2008)第1期第60-61页)中,我们主要介绍了预混料添加剂的活性组分和载体材料的要求,本文将详细介绍预混料加工厂生产过程中的要求。 相似文献