共查询到19条相似文献,搜索用时 62 毫秒
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薛玉霞 《河南畜牧兽医(综合版)》2012,(8):50-50
毛皮动物进行新陈代谢、运动、生长发育和繁殖等生命活动所必需的基本物质,称为营养物质。主要包括蛋白质、脂肪、糖、维生素、矿物质和水分等。营养物质由不同的饲料提供,饲料的品质直接影响着毛皮兽的体况、繁殖力和毛皮品质,所以饲料与毛皮兽的生产效果密切相关。 相似文献
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<正>1毛皮动物对营养物质的需求规律进入冬毛生长期后,毛皮动物对除能量外的各种营养物质的需求量日渐恒定。由于身体长度增加的最佳时期已经过去,寒冷的冬天逐渐来临,毛皮动物为了渡过漫长而寒冷的冬季,必须要储备足够的营养成分。因此,在这个阶段,毛皮动物所需要的各种营养成分的数量和质量相对而言还是比较高的。尽管个体还在逐渐地增大,但由于生长的速度已经放慢,并且,生长的主要部位不再是肌肉、骨骼和身体的长度,而转向 相似文献
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Distemper vaccination of farmed fur animals in Finland 总被引:1,自引:0,他引:1
The most important farmed fur animal species in Finland are the American mink (Mustela vison), blue fox (Alopex lagopus), silver fox (Vulpes vulpes) and raccoon dog (Nyctereutes procyonoides); all are susceptible to canine distemper. The only distemper vaccines currently available are for mink, although they also have been used for fox and raccoon dogs in emergency situations. The efficacy in eliciting neutralizing antibodies and the safety of three mink-distemper vaccines were studied under field conditions with mink and silver fox. Two of the vaccines were also studied with raccoon dogs and blue fox. All three vaccines elicited a satisfactory antibody response in mink, whereas the response varied in the other species. No side effects were observed in any species tested. One of the vaccines was safe and immunogenic in all four species. 相似文献
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水产动物的胆碱营养 总被引:3,自引:0,他引:3
胆碱最早从动物胆汁中分离得到 ,故又名胆素。人们习惯上将胆碱划为B族维生素 ,有VB4 之称 ,但胆碱与其他的B族维生素不同 ,并不以辅酶或酶的形式参与机体代谢 ,而且其需要量远高于其他B族维生素 ,是其他B族维生素需要量的数 10倍至数10 0倍 ,故也有人主张不宜将其列为维生素。1 胆碱的性质与功能胆碱 (三甲基乙醇胺 )的分子式为 (CH3) 3N(CH2 ) 2 OH ,为无色、黏滞、微带鱼腥味的强碱性液体 ,吸湿性很强 ,可与酸反映生成稳定的结晶盐。胆碱溶于水、甲醛、甲醇和乙醇 ;难溶于丙酮、氯仿 ;不溶于石油醚、苯、甲苯和四氯化碳。胆碱的生… 相似文献
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Epidemiological investigations on Trichinella infections in farmed fur animals of Estonia 总被引:1,自引:0,他引:1
Farming of fur animals represents an important income in Estonia. Even though Trichinella worms does not induce a symptomatic disease in carnivores, the carcasses of skinned animals can increase the biomass of the parasite in the environment, if they are not properly destroyed. The aim of the present survey was to study the prevalence of Trichinella worms in farmed fur animals of Estonia. Of 281 muscle samples from blue foxes (Alopex lagopus), silver foxes (Vulpes vulpes fulva), minks (Mustela vison) and raccoon dogs (Nyctereutes procyonoides), which were collected in eight farms, Trichinella larvae have been detected in 21 animals (8%) from two farms by HCl-pepsin digestion. The highest number of larvae per gram of muscle was found in the front limb muscles. Larvae of the 21 isolates have been identified as Trichinella britovi or Trichinella nativa by a multiplex-PCR analysis. 相似文献
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断奶犊牛的免疫与营养调控 总被引:1,自引:0,他引:1
现代养牛生产中大多采用强制断奶,以增加母牛配种次数,降低饲养成本,提高生产效益。但由于此时犊牛的消化系统和免疫器官发育不完善,消化系统中酶和酸分泌量不足,消化道正常的微生态区系尚未建立,断奶后往往导致犊牛食欲减退,抗病力差,断奶后的生产性能降低等。本文就断奶犊牛的免疫与营养调控作一综述。1断奶犊牛的免疫机能1.1初乳对免疫机能的影响1.1.1免疫球蛋白。有些动物在胎儿期就可获得母源抗体,但出生后吮吸初乳以获得被动免疫,对提高新生动物抵抗力仍然十分重要的,尤其是反刍动物,因为胎盘为结缔组织绒毛膜型,免疫球蛋白分子不能通… 相似文献