江河源区天然退化草地生态防治鼠害的研究

通过对江河源区退化草地人工和半人工改良的过程,经过生态控制,再配合药物灭杀扫除残留害鼠(高原 鼠兔),达到以生态措施为主综合防治鼠害的目的。     

毛丝鼠

黑绒毛丝鼠标 准毛丝 鼠正确捕捉方法毛丝 鼠在沙 浴哺 育 仔 鼠人工哺 乳毛丝鼠$上海师大动物生态研究室     

退耕还林还草地鼠类调查及控制对策研究

2002-2003年对青海省大通县退耕还林还草地鼠类组成进行调查研究,捕获鼠类6种728只,以根田鼠Microtus oeconomus和高原鼢鼠Myospalax baileyi为绝对优势种.4种方法进行退耕还林还草地害鼠控制的结果表明:人工置夹和药物控制是地上害鼠控制的有效方法,人工地箭与灭鼠雷可有效控制地下高原鼢鼠的数量.但从长远来看,控制退耕还林还草地鼠害应采取生态治理的原则和方法.     

碌曲县草原鼠荒地现状与治理对策

草原鼠荒地是因鼠类活动和超载过牧等原因引起的严重次生裸地。分析鼠荒地的危害现状、存在的主要问题,实施禁牧休牧,建植人工饲草料基地,合理确定载畜量,减轻草场压力,大力推进生物防治、生态控制为主的综合治理措施,积极开展环保新型药剂筛选试验和新技术研究,全面推广C型肉毒素、招鹰控鼠等生物防治技术和生态治理,降低鼠密度,有效防控鼠害,恢复草原植被,为鼠荒地治理和鼠害防控提供依据。     

青藏高原江河源区退化草地人工改良措施对高原鼠兔种群动态影响

通过对江河源区退化草地采取建植人工和半人工草地的措施进行改良,以影响害鼠(高原鼠兔)种群,达到防治鼠害的目的。     

青藏高原江河源区退化草地人工改良措施对高原鼠兔种群动态影响

通过对江河源区退化草地采取建植人工和半人工草地的措施进行改良,以影响害鼠(高原鼠兔)种群,达到防治鼠害的目的.     

昌吉州西三县市北部沙漠人工鹰架招鹰灭鼠效果显著

昌吉州西三县市北部沙漠人工鹰架招鹰灭鼠已10年,累计控制61.4 hm2,示范区害鼠密度达到了不足危害水平,草地生物量增加了20.5％,植被盖度提高了38.2％,植被高度增加了25％,其经济、生态和社会效益十分显著,今后应大力推广此项生物灭鼠技术.     

鄂尔多斯沙地不同生境中啮齿动物的生态位特征

采用Shannon-Wiener生态位宽度指数和Pianka生态位重叠指数对鄂尔多斯库布齐沙地东缘的7种不同生境中的啮齿动物群落进行研究,结果显示:鄂尔多斯沙地7种生境中共有7种啮齿动物分布,其中小毛足鼠的生态位宽度值最高,为0.99。在不同季节,夏季、秋季生态位宽度值最高的为小毛足鼠,生态位宽度值分别为0.99、0.97,春季生态位宽度值最高的为子午沙鼠,为0.60。夏季、秋季生态位宽度指数为0的鼠种为五趾跳鼠,春季生态位宽度指数为0鼠种除五趾跳鼠外还有三趾跳鼠、长爪沙鼠和黑线仓鼠。三趾跳鼠和子午沙鼠的生态位重叠指数最高,为0.90,五趾跳鼠和黑线仓鼠的生态位重叠指数最低,为0.09。春季、夏季、秋季生态位重叠指数最高的鼠种不同,表现出季节差异;春季、夏季、秋季生态位重叠指数为0的鼠种也不同,表明生态位分化在不同季节有差异。春季生态位明显分化,秋季也出现了一些物种的生态位分化,夏季生态位分化不明显。     

新源县草地资源利用初步探索

在新源县草原生态逐步退化、农牧民增收困难时,通过围栏封育禁牧休牧轮牧、补播改良草场、毒害草治理、鼠虫害防治,开发人工饲草资源,增加家畜冬季饲草供给量,延长冷季舍饲,缩短放牧时间,改变传统放牧生产方式。对恢复草场植被,防治水土流失,改善生态环境,提高农牧民收入等方面起到重要作用。     

论西藏高原草地生态环境保护与建设

根据西藏自治区实施国家西部大开发战略方针的指导思想，西文在分析西藏全区草、牧现状的基础上，针对受自然、社会、人为、鼠虫害等不利因素影响而导致草畜矛盾突出，草场沙化、退化、盐碱化现象发生，严重影响草原畜牧业顺利发展的问题，就如何重视和加强西藏记原草地生态保护与建设提出了调整畜群结构、防治鼠虫害、以法制止人为破坏、发展人工种草业等探讨性意见。     

中国饲料工业协会第五届理事会顾问、会长、常务副会长、副会长、秘书长、副秘书长、常务理事、理事名单

顾问刘中一张德邻宋瑞祥聂振邦张子仪戎易王维四会长白美清国务院原副秘书长、第四届理事会会长常务副会长(8人,以姓氏笔划为序)刘永好新希望集团董事长、第四届理事会副会长刘汉元通威股份有限公司董事长、第四届理事会副会长陈丹广东恒兴集团股份有限公司董事长、第四届理事会副会长张延喜农业部原副部长、第四届理事会副会长吴明夏湖南正虹科技发展股份有限公司董事长、第四届理事会副会长陶一山唐人神集团股份有限公司董事长、第四届理事会副会长温鹏程广东温氏食品集团有限公司董事长、第四届理事会副会长谭竹洲原化学工业部副部长、第…     

Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog

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.     

浅谈对症用药

对症用药就是通过对患病信鸽的症状进行诊断,进而确定病属,选择药物及如何用药的方法。     

军犬鉴别中的嗅源培养和易出现的问题及对策

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.……     

The influence of the width of the saddle tree on the forces and the pressure distribution under the saddle

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.     

Observations on the Pathology of the Spleen of the Cat

Abstract— Lesions were found in the spleen of four of sixty-three cats examined post mortem in the department, and comprised two examples of lymphosarcoma, one of chronic fibrinous peritonitis and one of subcapsular haematoma. Abnormalities were found in two cat spleens received from veterinary surgeons in general practice. In one cat the abnormalities were an haemangiosarcoma with secondary deposits in the liver and in the other extensive mast cell infiltration. In addition lesions were detected in the spleen of three of eighty-seven cats examined post mortem in general practice. The lesions were: multiple secondary deposits of adenocarcinoma from a primary tumour of the mammary gland, a ruptured spleen and a foreign body below the splenic capsule. Résumé— L'examen microscopique de soixante-trois chats pratiqué dans le service a permis de rencontrer quatre fois des lésions de la rate, dont deux lymphosarcomes, une péritonite capsulaire fibrineuse et un hématome sous-capsulaire. D'autre part des lésions ont été trouvées dans deux rates de chat expédiées par des vétérinaires exerçant en pratiaue générale. Chez un chat il s'agissait d'un htmangiosarcome avec métastases hépatiques et chex l'autre d'une infilt ation diffuse par des mastocyta. De plus, on a rencontré des llésions dnas la rate de trois chats parmi quatre-vingt sept autopsies effectuées dans le cadre d'une clientèle génárale. Ces iésions étaient dés métastases multiples d'un adénocarcinome dont la tumeur primitive siègeait dam la glande mammaire, une rupture de la rate et un corps érangers sou capsulaire. Zusammenfassung— Läsionen der Milz wurden bei vier von dreiuiidsechzig in dieser hbteilung sezierten Katzen gefunden, und zwar in zwei Fällen ein Lymphosarkom, in einem Falle eine chron-ische fibrinöse Peritonitis und in einem ein subkapsuläres Hématom. Anomalien fanden sich auch in der Milz von zwei Katzen, die aus der tierxrztlichen Praxis eingesandt wurden. Bei der einen Katze war dies ein Hämangiosarkom mit Metastasen in der Leber, bei der anderen eine weitläufige Infiltration der Mastzellen. Außerdem wurden bei drei von siebenundachtzig in der Praxis sezierten Katzen Milzläsionen gefunden. Diese bestanden am multiplen Metastasen eines Adenokarzinoms der Brustdrüse, einer Milzzerreissung und einem Fremdkörper unterhalb der Milzkapsel.