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熊前 《江西畜牧兽医杂志》2006,(3):43-44
随着我国犬业市场的不断升温,集约化、规模化犬场不断增加,过去由于分散饲养表现并不突出的犬的排泄物、生产污水及噪音等环境污染问题逐渐表现突出,成为一大环境污染问题。如不经严格处理,不仅对犬本身造成危害,而且也会对犬场及周围环境造成严重污染。只有从实际出发,从规模化犬场的合理化建设、犬场废弃物的无害化处理、犬场周边环境的治理等方面着手,采取有效的环保治理措施,减少污染,才能切实解决规模化犬场的污染问题,为犬业可持续性发展创造条件。1规模化犬场主要污染物的种类及危害1.1犬的粪便排泄物污染犬场的粪便排泄量大,且含有… 相似文献
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多年来随着养犬业的日益发展,宠物犬大量进入人们的家庭生活,铁路运输犬类动物越来越多,旅途长短不一,多则五六天少则几小时,由于在行李车上,生活条件的变化,对犬的肌体是一种考验,抵抗力低下的易引起发病,另外犬的排泄物极易污染行李车的物体,尤其是食品被污染后对人的身心健康造成了危害,一旦病犬被运往外地 相似文献
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犬类管理问题一直是社会普遍关注的热点、焦点、难点问题.近年来,随着人民生活水平的提高,城市中饲养宠物犬的数量在大幅增加,随着犬数量的增加,产生了犬吠扰民、犬只伤人、粪便排泄物污染环境等一系列突出的社会公共问题.国内许多媒体对此也进行了多次宣传报道,引起了社会对犬类管理工作的重视.浙江省杭州市调查研究后,结合本地实际,进一步创新管理方式,完善长效管理机制,强化监管力度,犬类综合管理取得明显成效. 相似文献
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《畜牧兽医科技信息》2021,(8)
正养殖污染主要来自畜禽排泄物和生活垃圾,如果没有按照粪污集中堆放和无害化处理的科学规范的要求进行集中堆放发酵处理,就会影响人居环境卫生和空气质量安全。养殖区、养殖户棚圈及其周围粪污排泄物长期得不到及时清理和消毒治理,导致大量有毒有害病菌滋生、虫卵繁殖,传播疫病和感染寄生虫病。 相似文献
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畜禽在为人类提供大量优质畜产品的同时,也向环境排放着大量的粪尿和有害气体,污染着环境。随着人类生活水平的不断提高,对肉蛋奶的需求量不断增加,致使畜禽生产规模愈来愈大,现代化、集约化程度愈来愈高,饲养数量及饲养密度急剧增加,畜禽饲养及活体加工过程中产生的大量排泄物 相似文献
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减少养禽业中氮、磷排泄及污染的营养措施 总被引：2，自引：0，他引：2
随着家禽业生产规模的不断扩大和集约化程度的不断提高，家禽排泄物中氮、磷对环境的污染也日趋严重，家禽生产过程中积累的大量粪尿不仅会污染表土层和地下水．其产生的有害气体还会污染大气，并由此产生一系列公害。因此减少养禽业中排泄物的污染已成为当务之急，而通过营养措施减少养分排泄量是主要途径之一。 相似文献
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随着畜禽生产规模的扩大 ,现代化、集约化程度的提高 ,产生的排泄物和废弃物 ,如畜禽尿、粪便、污水等对周围环境及畜禽生活环境的影响越来越突出。因此 ,减轻或消除环境污染 ,已成为规模畜禽养殖场及环境保护事业发展面临的严峻挑战。1 规模畜禽养殖场发展过程存在的主要环境问题规模畜禽养殖场污染因素主要是畜禽饲养过程中产生大量的排泄物和废弃物 ,包括粪便、恶臭气体、污水等 ,有害成分包括病原微生物、有机氮、甲烷、Ｈ2 Ｓ、ＮＨ3等。病原微生物是人类及生物致病的传染源 ,大量有机成分造成水的污染 ,恶臭气体影响人类生活环境。若… 相似文献
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低蛋白日粮在养猪生产中的应用 总被引：1，自引：0，他引：1
随着养殖业的快速发展,排泄物对环境的污染问题越来越突出,猪排泄物中含有大量的氮和磷,这些氮和磷流人环境后将会给环境造成巨大的污染。通过合理地处理和利用猪排泄物,可以部分解决环境污染问题。只有从源头上控制氮的采食量和提高氮磷在猪体内的吸收和利用率,才能从根本上降低猪排泄物中氮磷对环境的污染程度。减少养猪生产中氮磷排出量的方法包括利用可消化氨基酸配合日粮、使用合成氨基酸及“理想蛋白”模式的应用等。低蛋白日粮配制技术就是按照“理想蛋白”和可消化氨基酸配合日粮技术发展而来的。 相似文献
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Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog 总被引：1，自引：0，他引：1
Progesterone levels in peripheral blood of dogs were analysed during the cycle in which hysterectomy (n = 5) or sham surgery (n = 3) was performed as well as during the cycle of dogs (n = 5) hysterectomized at least one year prior to this study; the data were compared with the findings in control dogs (n = 3). The averages of the duration of the luteal period observed in the three experimental groups were not significantly different from those of control dogs. Immediately after surgery, the progesterone level decreased from 25 to 50% of the presurgical level, but returned to presurgical level in about four days. Prolactin levels were elevated for about 30 h after surgery. Nevertheless, the averages of the mean prolactin levels for each animal during the luteal period of the experimental groups were not significantly different from those of control dogs. It is concluded that in the dog, the uterus is not involved in the lifespan of the cyclic corpus luteum. 相似文献
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Meschan EM Peham C Schobesberger H Licka TF 《Veterinary journal (London, England : 1997)》2007,173(3):578-584
As there is no statistical evidence that saddle fit influences the load exerted on a horse's back, this study was performed to assess the hypothesis that the width of the tree significantly alters the pressure distribution on the back beneath the saddle. Nineteen sound horses were ridden at walk and trot on a treadmill with three saddles differing only in tree width. Kinetic data were recorded by a sensor mat. A minimum of 14 motion cycles were used in each trial. The saddles were classified into four groups depending on fit. For each horse, the saddle with the lowest overall force (LOF) was determined. Saddles were classified as "too-narrow" if they were one size (2 cm) narrower than the LOF saddle, and "too-wide" if they were one size (2 cm) wider than the LOF saddle. Saddles two sizes wider than LOF saddles were classified as "very-wide". In the group of narrow saddles, the pressure in the caudal third (walk 0.63 N/cm(2)+/-0.10; trot 1.08 N/cm(2)+/-0.26) was significantly higher compared to the LOF saddles (walk 0.50 N/cm(2)+/-0.09; trot 0.86 N/cm(2)+/-0.28). In the middle transversal third, the pressure of the wide saddles (walk 0.73 N/cm(2)+/-0.06; trot 1.52 N/cm(2)+/-0.19) and very-wide saddles (walk 0.77 N/cm(2)+/-0.06; trot 1.57 N/cm(2)+/-0.19) was significantly higher compared to LOF saddles (walk 0.65 N/cm(2)+/-0.10/ 0.63 N/cm(2)+/-0.11; trot 1.33 N/cm(2)+/-0.22/1.27 N/cm(2)+/-0.20). This study demonstrates that the load under poorly fitting saddles is distributed over a smaller area than under properly fitting saddles, leading to potentially harmful pressures peaks. 相似文献
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嗅源是军犬嗅觉作业训练的依据.军犬鉴别中嗅源能力的培养在整个鉴别训练中占有重要地位,关系到鉴别训练的成败和鉴别能力的提高.所以,军犬在嗅认嗅源时必须按照训犬员的指令充分、细致地感受嗅源气味,并且对嗅源气味产生兴奋反应.如何培养军犬充分嗅认嗅源以及及时解决嗅认过程中出现的问题,成为我们进行鉴别训练的关键.…… 相似文献
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