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围产期患高发代谢病奶牛T_4、T_3、TSH、I含量动态变化的研究 总被引：1，自引：0，他引：1
试验以处于围产期的68头奶牛(以健康经产牛为对照组,患酮病、脂肪肝、胎衣不下牛为试验组)为研究对象,在奶牛产前第15,8,1天和产后第1,8,15,22天分别采集颈静脉血检测血清中甲状腺激素[四碘甲腺原氨酸(T4)和三碘甲腺原氨酸(T3)]、促甲状腺激素(TSH)、碘(I)的含量。结果表明:健康的经产牛围产期血清中T4、T3、TSH、I均呈现波浪式动态变化,最高值分别出现在产前第1天、产后第22天、产后第1天、产前第15天;TSH最低值出现在产前第15天,其他检测指标最低值出现在产后第1天。患酮病的奶牛和患脂肪肝的奶牛围产期处于缺碘状态,其产后甲状腺机能出现减退;患脂肪肝期间同时伴发甲状腺功能减退症;患胎衣不下的奶牛围产期碘含量低于正常值,其产犊前后伴发亚临床甲状腺功能减退症。数据统计结果显示:奶牛血清中T4与TSH、T3、I的相关系数分别为-0.749,0.535,0.691;T3与TSH、I的相关系数分别为-0.502,0.457。 相似文献
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奶牛围产期是指怀孕母牛产前产后各15天期间,产前15天为围产期,产后15天为围产后期。由于临近生产或刚刚生产过,奶牛机体的生理状态发生了变化,身体虚弱,抗病力差,是奶牛疾病的高发期,一旦发病或处理不当将会给奶牛造成严重危害,笔者根据多年来技术服务实践就奶牛围产期常见病的监测与防治浅谈如下,供读者参考。 相似文献
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围产期是指奶牛从产前15天到产后15天的过渡时期,围产期奶牛要经过不同的生理阶段其最大特征是内分泌状态发生明显改变,从而为分娩和泌乳作好准备。这一阶段的饲粮对奶牛的健康 相似文献
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奶牛围产期是分娩前后各15天的时间,产前15天为围产前期,产后15天为围产后期,这阶段对母牛、胎犊、新生犊牛的健康十分重要,围产期母牛的发病率高,死亡率也高。本文就奶牛围产期的生理特点与期间的饲养管理措施做以下简述。 相似文献
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围产期是指奶牛分娩前15天至产后15天。在奶牛的饲养管理过程中,此阶段不仅关系到临产母牛、产后母牛和犊牛的健康,还直接影响到今后奶牛生产能力的发挥。因此,合理有效的抓好奶牛围产期的管理,对提高奶牛的生产力、创造更大的经济效益具有重要的意义。临产前母牛(产前天) 相似文献
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奶牛围产期是指怀孕母牛产前产后各15天期间，产前15天为围产期。产后15天围产后期。由于临近生产或刚刚生产过．机体的生理状态发生了变化，身体虚弱，抗病力差．是奶牛疾病的常发病高发期，一旦发病或处理不当将会给奶牛造成严重危害。笔者根据多年来技术服务实践总结出奶牛围产期常发病的监测与防治措施如下，供读者参考。 相似文献
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一、奶牛泌乳阶段的饲养 奶牛从产犊到泌乳期结束,按着奶牛泌乳规律将奶牛泌乳阶段划分为围产期、泌乳上升期、泌乳高峰期、泌乳稳定期、末乳期和干乳期6个阶段。为了调动各个阶段的生理功能,按着各阶段的变化,必须采取相应的管理措施。 (一)围产期的饲养管理。母牛分娩前15天至分娩后15天称围产期,以分娩为界又分为围产前期和围产后期。 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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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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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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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