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围产期奶牛脂肪肝和繁殖力关系的研究 总被引：1，自引：0，他引：1
脂肪肝常发生于奶牛产后,脂肪浸润的危害性不仅影响肝脏不正常功能而且降低患牛的繁殖力和机体免疫功能,并且常伴发胎衣不下、子宫内膜炎、乳房炎和产犊间隔时间延长。为探讨奶牛围产期脂肪肝的发生、诊断及该病同患牛繁殖力的关系,进行了一些研究, 相似文献
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围产期是指产前3周至产后3周,此时是奶牛饲养的关键阶段。围产期奶牛管理的成败决定了随后泌乳期的成败。据调查奶牛疾病75%是由于围产期管理不善引起的,常见的疾病如胎衣不下、子宫内膜炎、脂肪肝、酮病、乳房炎、乳房水肿、奶牛产后瘫痪等。很多奶牛养殖户只注重奶牛产奶高峰期的管理,而忽略了围产期饲养管理。 相似文献
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围产期奶牛患脂肪肝后，由于肝功能障碍，常导致胆汁分泌不足，影响消化功能；同时还容易伴发其他围产期疾病，如胎衣不下、生产瘫痪和子宫内膜炎等，从而使患牛的产奶量、繁殖力和免疫力受到不同程度的影响。 相似文献
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奶牛肝脏内脂肪代谢过程受阻，使脂肪在肝脏中蓄积，并超过肝脏中正常含量的5％时，即称为脂肪肝。由于此病常发生于围产期的奶牛，所以又叫围产期奶牛脂肪肝。患病后的奶牛，不仅肝脏的正常功能受到影响，胆汁分泌障碍，影响消化功能，常伴发其他围产期疾病，如胎衣不下、生产瘫痪和子宫内膜炎等；患牛的繁殖力和免疫力也会受到不同程度的影响。 相似文献
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奶牛肝脏内脂肪代谢受阻,使脂肪在肝脏中蓄积,并超过肝脏中正常含量的5%时,即称为脂肪肝.由于此病常发生于围产期的奶牛,所以又叫围产期奶牛脂肪肝.患病后由于肝功能障碍,常导致胆汁分泌不足,影响消化功能;同时还容易伴发其它围产期疾病,如胎衣不下、生产瘫痪和子宫内膜炎等,从而使患牛的产奶量、繁殖力和免疫力受到不同程度的影响. 相似文献
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1奶牛围产期易发生的疾病
围产期是指奶牛产犊前第21天到产后15天，这一时期由于奶牛内分泌系统（甲状旁腺素、孕酮、血浆雌性素、催乳素等）及瘤胃微生物、瘤胃黏膜的变化，管理不善，极易发生各种产屙疾病，如产后瘫痪、胎衣不下、酮病、真胃移位、脂肪肝、子宫内膜炎、乳房炎等。在这一时期的饲养管理的好坏， 相似文献
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刘国信 《北方牧业(奶牛)》2006,(6):34-35
奶牛肝脏内脂肪代谢受阻。使脂肪在肝脏中蓄积，并超过肝脏中正常含量的5％时。即称为脂肪肝。由于此病常发生于围产期的奶牛。所以又叫围产期奶牛脂肪肝。患病后由于肝功能障碍。常导致胆汁分泌不足，影响消化功能；同时还容易伴发其他围产期疾病，如胎衣不下、生产瘫痪和子宫内膜炎等，从而使患牛的产奶量、繁殖力和免疫力受到不同程度的影响。 相似文献
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Géraldine Bolen Fabrice Audigié Mathieu Spriet Filip Vandenberghe Valeria Busoni 《Journal of Equine Veterinary Science》2010
Magnetic resonance (MR) imaging has become an important diagnostic tool in the investigation of foot pain in horses. The aim of this study was to qualitatively compare ex-vivo MR images of the same equine feet obtained at three magnetic field strengths: 0.27, 1.5, and 3 tesla (T). Ten cadaver feet were used. All feet were imaged with two high-field systems (3T, 1.5T) and with a low-field (LF) system at 0.27 T designed for standing horses. Images were acquired using similar pulse sequences in all 3 MR units. MR images were subjectively evaluated by three independent experienced image analysts for image quality and clarity of visualization of individual anatomical structures using a four-point grading scale. The images from all of the examinations were considered to be of diagnostic value except for the hoof capsule where substantial artifacts were present in LF images with distortion and loss of signal at the dorsal/distal aspect of the hoof capsule in LF images. Anatomical structure scoring values of images obtained at 3T and 1.5T were significantly greater than scores of images obtained at 0.27T. Scores for images obtained at 3T were significantly higher than those for images obtained at 1.5T. Mean score differences between 1.5T and 3T were higher for cartilage of the distal interphalangeal joint and for the ungular cartilages. 相似文献
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Sixteen neonatal foals stressed by disease underwent endoscopic examination of their stomachs and blood was assayed for triiodothyronine (T3), reverse T3 (rT3), thyroxine (T4) and cortisol, to determine the effects of severe physiological stress and the occurrence of gastric ulcers. compared with eight age-matched controls, six foals had abnormal cortisol, seven had abnormal T3 and 12 had abnormal T4. Eleven of 13 foals had rT3 outside the 95 per cent confidence interval for clinically normal foals of comparable ages. Gastric lesions were seen more frequently in stressed foals, and gastric glandular mucosal lesions were noted in 40 per cent of the stressed foals. Previous studies report low (3 per cent) occurrence of gastric mucosal lesions. The frequency of squamous mucosal lesions was not different from that reported previously, indicating that stress has little effect on the development of lesions at this site. 相似文献
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选择经同期发情且同期受孕,妊娠90 d的健康蒙古绵羊100只,分为代谢能(ME)0.175 MJ/(kgw0.75.d)(RG1)0、.33 MJ/(kgw0.75.d)(RG2)以及自由采食对照组(CG)3个营养水平处理组,研究妊娠后期不同营养水平限制饲养对母羊分娩后生理补偿期内血中GH、IGF-I、T3、T4和INS浓度的影响。结果表明:母羊从分娩后10 d开始,各限制组RG1和RG2组GH浓度均处于较高水平,而IGF-I、INS、T3、T4浓度仍处于较低水平,与对照组相比差异不显著;分娩30 d后,各组各指标变化复杂,RG1和RG2组GH浓度均有所下降,而IGF-I、INS、T3、T4浓度缓慢回升,到150 d后,各限制组GHI、GF-II、NS、T3、T4浓度都与对照组水平持平,而且在整个生理补偿期内,RG2组表现更突出。 相似文献
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Measurement of thyroid hormones (thyroxine, T4; triiodothyronine, T3) in captive nondomestic felids.
Débora Cattaruzzi Rodini Erika Cristiane Gutierrez Felippe Cláudio Alvarenga Oliveira 《Journal of zoo and wildlife medicine》2007,38(1):125-126
The aim of this research was to obtain basic values for the evaluation of thyroid function in nondomestic felids. Serum thyroid hormone concentrations (thyroxine, T4; triiodothyronine, T3) were measured by radioimmunoassay in 145 cats, representing nine species of captive nondomestic felids: jaguar (Panthera onca), n = 49; puma (Puma concolor), n = 10; ocelot (Leopardus pardalis), n = 22; oncilla (Leopardus tigrinus), n = 12; geoffroy (Oncifelis geoffroyi), n = 4; jaguarundi (Herpailurus yaguarondi), n = 8; margay (Leopardus wiedii), n = 7; lion (Panthera leo), n = 26; and tiger (Panthera tigris), n = 7. For each species, mean +/- SEM of T3 and T4, respectively, were as follows: jaguar, 0.56 +/- 0.03 and 9.7 +/- 0.8 ng/ml; puma, 0.67 +/- 0.04 and 11.2 +/- 1.2 ng/ml; ocelot, 0.48 +/- 0.03 and 13.8 +/- 1.5 ng/ml; oncilla, 0.43 +/- 0.03 and 10.0 +/- 1.6 ng/ml; geoffroy, 0.44 +/- 0.04 and 8.0 +/- 0.16 ng/ml; jaguarundi, 0.7 +/- 0.03 and 5.0 +/- 1.0 ng/ml; margay, 0.48 +/- 0.04 and 12.2 +/- 2.3 ng/ml; lion, 0.43 +/- 0.02 and 5.7 +/- 2.6 ng/ml; and tiger, 0.66 +/- 0.03 and 12.6 +/- 0.9 ng/ml. Within species, T3 and T4 concentrations did not differ (P > 0.05) between males and females. 相似文献
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Little is known about stability of hormones in blood samples stored under various conditions. This study was conducted to examine stability of triiodothyronine (T3), thyroxine (T4), luteinizing hormone (LH), prolactin, insulin, cortisol and progesterone in blood and serum samples. Experiment 1 was designed to determine if concentrations of these hormones were affected by exposure to cellular elements of anticoagulated and coagulated blood when stored at 4 C and room temperature (22 to 26 C). Jugular venous blood was collected from six diestrous Holstein cows into evacuated bottles containing sodium ethylenediaminetetraacetic acid (EDTA), heparin or no anticoagulant. Subsamples of EDTA-treated and heparinized blood were stored .25, .5, 1, 2, 4, 8, 24 and 72 h at 4 C or room temperature. Subsamples of blood without anticoagulant were stored in polypropylene tubes (clot tubes) or serum separator tubes for 1, 2, 4, 8, 24 ad 72 h. Mean concentrations of T3, T4, LH, prolactin and cortisol did not change in plasma or serum from either of the four types of samples stored at 4 C or room temperature for 72 h. The mean insulin concentration decreased 18% by 72 h in serum from serum separator tubes stored at room temperature. At 4 C, mean progesterone concentrations decreased 55% by 24 h and 73% by 72 h in plasma from EDTA-treated blood; 41% by 72 h in serum from clot tubes, and 26% by 24 h and 36% by 72 h in serum from serum separator tubes.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
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C M Czarnecki 《Avian diseases》1991,35(4):930-936
Ten turkey poults each were placed in one of four groups: control, thyroxine (T4), furazolidone (FZ), and FZ + T4. Thyroxine (T4), at a concentration of 1 ppm, was included in the ration of poults fed T4 and FZ + T4, and furazolidone (FZ), at a concentration of 700 ppm, was included in the ration of poults fed FZ and FZ + T4 from 2 to 5 weeks of age. Levels of plasma T4 decreased significantly (P less than or equal to 0.05) between 2 and 5 weeks in control and FZ poults. At 5 weeks, plasma T4 levels were significantly (P less than or equal to 0.05) lower in FZ poults than in control poults and significantly (P less than or equal to 0.05) lower in the FZ + T4 poults than in the T4 poults. Exogenous administration of T4 had no effect on development of the round heart syndrome or on body weight, but significantly increased feed consumption in FZ-fed poults during weeks 4 (P less than or equal to 0.05) and 5 (P less than or equal to 0.01). Inclusion of T4 in the ration increased plasma levels of the hormone 12x in both T4 and FZ + T4 poults and significantly (P less than or equal to 0.05) increased myocardial glycogen content in T4 poults but not in FZ + T4 poults. 相似文献
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An interference phenomenon that delays superinfection with a trypanosome species different from that used for the initial infection has been found to occur in goats. Following tsetse transmission of Trypanosoma brucei to goats already infected with T. congolense, there was a delay in chancre development, as well as in the appearance of T. brucei and anti-T. brucei antibodies in the blood when compared to previously uninfected goats. However, there was no delay in the establishment of a tsetse-transmitted superinfection with T. vivax in goats already infected with either T. congolense or in animals already infected with a different serodeme of T. vivax. 相似文献
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