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21.
Anne KH Krogh Pernille Legind Mads Kjelgaard-Hansen Louise Bochsen Annemarie T Kristensen 《Acta veterinaria Scandinavica》2014,56(1):11
Background
Sled dogs performing endurance races have been reported to have a high incidence of gastric erosions or ulcerations and an increased risk of gastro intestinal bleeding leading to death in some cases. In addition, these dogs also become hypothyroid during training and exercise. Canine hypothyroidism has been shown to correlate with decreased von Willebrand factor antigen and potentially increased bleeding tendency. Whether increased gastro intestinal bleeding risk is exacerbated due to changes in the hemostatic balance is unknown. The aim of this study was to investigate the hemostatic balance in sled dogs before and after exercise and in addition evaluate any correlation to thyroid status. Twenty sled dogs have been assessed in untrained and trained condition and immediately after exercise. The first sample was collected in the autumn following a resting period, and subsequently the dogs were exposed to increased intensity of training. After four months the peak of physical condition was reached and a 68 km long sled pulling exercise was performed. Samples were collected before and immediately after the exercise. Evaluated parameters were: plasma thromboelastographic (TEG) R, SP, α and MA, activated partial thromboplastin time (aPTT), prothrombin time (PT), fibrinogen, von Willebrand factor (vWf), D-dimer, platelet number, thyroid hormones, hematocrit and C-reactive protein (CRP).Results
Exercise induced an overall hypercoagulable state characterized by significant decreases of TEG R and SP and an increase of α, increased concentrations of plasma vWf and decreased aPTT. In addition, a proinflammatory status was seen by a significant increase of serum CRP concentrations. Thyroid status was confirmed to be hypothyroid as training and exercise induced significant decrease of thyroxin (T4), free thyroxin (fT4) and thyroxin stimulating hormone (TSH) concentrations. Fibrinogen decreased significantly and PT increased. The training-induced changes showed correlation between T4, fT4 and aPTT and correlation between TSH and fibrinogen. Exercise-induced changes showed correlation between T4 and PT.Conclusions
Exercise was associated with a hypercoagulable state and an increase of vWf concentration in this group of sled dogs. Decreased thyroid hormone concentrations after training and exercise were confirmed, but were associated with increased and not decreased vWf in this group of sled dogs. 相似文献22.
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通过调查得到启示,就如何加快农产品加工业发展提出和论证了以下问题：加快农产品加工业发展需要全面的和深层次的转变观念;发展农产品加工业,要选准产品,主攻创名牌和保护名牌;农产品加工业要按照农业产业化经营模式发展;改制是公有制农产品加工企业必须解决的重大课题;转变政府职能和实行必要的宏观调控是农产品加工业适应市场需要发展所必须的条件。 相似文献
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对马兰［Ｋａｌｉｍｅｒｉｓｉｎｄｉｃａ（Ｌ．）Ｓｃｈ－Ｂｉｐ］主要生物学特性进行了观察,并比较了５种不同生长环境的生长状况。结果表明：在土壤疏松、有机质丰富、肥力较强的栽培地上生长状况最好,产量最高;而在土壤紧实荫蔽条件下,生长最差,产量最低。这为马兰的人工驯化栽培提供了科学的依据。 相似文献
27.
BC Li W Li H Chen YN Zhang ZT Zhang XY Wang B Gao TC Dou KH Wang 《Reproduction in domestic animals》2013,48(3):368-372
This study was conducted to explore the influencing factors of ova in vitro fertilization (IVF) and transfer of the fertilized ova into the oviduct of recipient hens. The efficiency of fertilization was compared using three aspects: (i) the different time of ova collection and transfer, (ii) egg‐laying period of recipient hen; and (iii) semen volume. The following results are observed: 72%, 40% and 0% of ova were found in ovarian sac in 30～40 min, 50～60 min and more than 90 min post‐oviposition, respectively; 20%, 18%, 14% and 5.8% of ova were fertilized with 0.1, 0.2, 0.5 and 1.0 ml semen, respectively; and 33% and 100% of healthy chickens were hatched from fertile ova with 0.1 and 0.5 ml of semen, respectively. All oocytes obtained from ovary and mid‐oviduct were unfertilized. Embryos were transferred into recipient hens 30 min ± 10 min post‐oviposition, and 70% of shelled eggs were produced. There were no eggs produced in the other transfer times. This demonstrated that live chicken can be obtained by IVF of ova collected shortly after oviposition. It was important that the ovum was transferred into the oviduct infundibulum of recipient hens immediately or shortly after oviposition. 相似文献
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Hayes M Ashe S Collins D Power S Kenny K Sheahan M O'Hagan G More S 《Irish veterinary journal》2009,62(3):182-190
Since 1998, there has been a steady decline in herd restrictions and de-populations in Ireland due to bovine brucellosis. There is concern that the interpretation of laboratory results may become increasingly problematic, as brucellosis prevalence falls in Ireland. Therefore, the purpose of the current study was to evaluate the infection status of Irish herds and animals with inconclusive serological evidence of bovine brucellosis. During 12 months from September 1, 2004, laboratory and observational epidemiological data were collected from all Irish herds where animal testing identified at least one animal with a complement fixation test (CFT) reading greater than zero and/or a positive result to the indirect enzyme-linked immunosorbent assay (iELISA). Due to the observational nature of the study, we have robust estimates of the relative, but not the absolute, performance of the CFT, iELISA and brucellin skin test (BST). Herds were divided into three categories (Group A, B or C) on the basis of test results at initial assessment. A total of 639 herds were enrolled into the study, and observed for at least two years following enrolment. A rising CFT titre, with a CFT reading of 111 International CFT Units (IU) or greater at the subsequent blood test, was generally associated with herds where other evidence of infection was also available. Knowledge of the CFT reading at the initial and a subsequent blood test proved useful in distinguishing false-positive and true-positive brucellosis results. There was poor correlation between the CFT and iELISA results, and between the CFT and BST results. As a result of this study, national policy has been modified to include re-sampling of all animals with CFT readings of 20 IU or greater. This project has also led to a reduction in the number of herds restricted, as well as restriction duration. It has also contributed to a reduction in the number of herds listed for contiguous tests, and therefore the potential for contiguity testing of false positive results. 相似文献
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Ghafouri Seyed Ali GhalyanchiLangeroudi Arash Maghsoudloo Hossein KH Farahani Reza Abdollahi Hamed Tehrani Farshad Fallah Mohammad Hossein 《Tropical animal health and production》2017,49(5):1089-1093
Tropical Animal Health and Production - In 2010, H5N8 highly pathogenic avian influenza (HPAI) viruses of the A/Goose/Guangdong/1/1996 lineage dramatically affected poultry and wild birds in Asia,... 相似文献
30.
The thyroid glands of two series of ninety-nine unselected dogs from consecutive autopsies in London and in Munich were examined histologically. The prevalence of goitre and of neoplasia was distinctly higher in dogs in the Munich series.
Résumé. On a examiné de façon histologiyue les glandes thyroïdes de deux séries de quatrevingt-dix-neufs chiens d'après des autopsies consécutives à Londres et à Munich. La prédominance de goîtres et de néoplasie était nettement plus élevée chez les chien de la série de Munich
Zusammenfassung. Die Schilddrüsen von zwei Serien von 99 Hunden Wurden von darauf-folgenden Autopsien in London und München histologisch untersucht. Das Vorkommenwon Kropf und Neoplasia war entschieden höher in den Hunden der Munchener Serie. 相似文献
Résumé. On a examiné de façon histologiyue les glandes thyroïdes de deux séries de quatrevingt-dix-neufs chiens d'après des autopsies consécutives à Londres et à Munich. La prédominance de goîtres et de néoplasie était nettement plus élevée chez les chien de la série de Munich
Zusammenfassung. Die Schilddrüsen von zwei Serien von 99 Hunden Wurden von darauf-folgenden Autopsien in London und München histologisch untersucht. Das Vorkommenwon Kropf und Neoplasia war entschieden höher in den Hunden der Munchener Serie. 相似文献