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昆明犬以其优良的警用性能,被广泛使用于刑事侦察、治安防范、缉毒搜爆等领域。但是,公安现实斗争对昆明犬的警用性能提出了更高的要求。为此,昆明警犬基地结合昆明犬的特性,适时开展了“昆明犬的复壮与改良研究”,通过导入马里努阿犬血缘,再在杂交的基础上进行横交固定、扩群,进一步提高了原有昆明犬的警用品质。本文按照课题研究技术路线,把改良后的昆明犬幼犬与马里努阿犬以及改良前的昆明犬幼犬的警用品质进行比较研究。 相似文献
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昆明犬以其优良的警用性能,被广泛使用于刑事侦察、治安防范、缉毒搜爆等领域.但是,公安现实斗争对昆明犬的警用性能提出了更高的要求.为此,昆明警犬基地结合昆明犬的特性,适时开展了"昆明犬的复壮与改良研究",通过导人马里努阿犬血缘,再在杂交的基础上进行横交固定、扩群,进一步提高了原有昆明犬的警用品质.本文按照课题研究技术路线,把改良后的昆明犬幼犬与马里努阿犬以及改良前的昆明犬幼犬的警用品质进行比较研究. 相似文献
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2012年10月20日,由中国工作犬管理协会、公安部昆明警犬基地主办,中国工作犬管理协会昆明办事处承办的"2012昆明全犬种展评暨训练比赛"在公安部昆明警犬基地举办。本次赛事设置了全犬种展评、昆明犬、马里努阿犬单独展、服从比赛及特殊技能表演赛共5个项目,88个奖项;来自贵州、四川、山东、陕西、河北及云南等地的11个品种166头犬参加了展赛。 相似文献
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昆明犬复壮提高研究报告 总被引:1,自引:0,他引:1
一、导言昆明犬的培育是公安部最早于建国初期提出来的,几十年来公安部领导始终关心/重视昆明犬的研究与发展工作。2000年公安部白景富副部长指示:要培养适合我国国情,适应我国人文地理环境的优良警用品种犬,创造我国自己的警犬品牌,主管局安卫星副局长对发展昆明犬一惯抓得很紧/很关心,多次要求昆明警犬基地把昆明犬发展作为优势和特色工作重点抓紧抓好,并关心指导制定昆明犬标准及核心犬群样板版型。昆明犬是由公安部昆明警犬基地培育成功的我国第一个优秀工作犬品种。现已形成形状相似、遗传性能相对稳定的“狼青”、“草黄”、“黑背”… 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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Observations on the Pathology of the Spleen of the Cat 总被引:1,自引:0,他引:1
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. 相似文献