Concentration of steroid sex hormones in the plasma of hens in relation to oviduct tumours     

A D Anjum  L N Payne 《British poultry science》1988,29(4):729-734

1. The concentrations of 17 beta-oestradiol (E2) and progesterone (P) were determined in the plasma of layer breeder hens at the end of their first laying season, in relation to neoplasms of the oviduct, including magnum tumours and leiomyomas. 2. The plasma concentration of E2 was higher in tumorous than in non-tumorous hens indicating it may be involved in the development of oviduct tumours. 3. The plasma concentrations of P in tumorous and non-tumorous hens were not significantly different, suggesting no active role of P in the aetiology of the tumours. 4. The E2: P ratio was higher in tumorous than in non-tumorous hens. This ratio could be of value in predicting hens at risk of developing oviduct tumours.  相似文献   

The indirect fluorescent antibody test for the differentiation of infections with Babesia divergens or Babesia major     

L P Joyner  J Donnelly  R Payne  D W Brocklesby 《Research in veterinary science》1972,13(6):515-518

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The morphology and morphogenesis of jaagsiekte retrovirus (JSRV)   总被引：1，自引：0，他引：1  

A L Payne  D W Verwoerd  H M Garnett 《The Onderstepoort journal of veterinary research》1983,50(4):317-322

Jaagsiekte retrovirus ( JSRV ) was recently shown to be the aetiological agent of jaasiekte (ovine pulmonary adenomatosis). The morphogenesis of JSRV was studied in jaagsiekte tumour tissue. Intracytoplasmic particles, often associated with centrioles, were found in tumour cells. JSRV budded from tumour cells with a complete core which appeared to mature during the budding process. Extracellular particles were found in the alveolar lumen. Immature extracellular particles were rare. Mature extracellular JSRV was membrane-bound and had a slightly eccentric nucleoid with an electron-dense perinucleoidal space. In negatively stained preparations of JSRV the envelope was covered with spikes. JSRV is morphologically distinct from all known retroviruses.  相似文献   

Comparison of common fecal flotation techniques for the recovery of parasite eggs and oocysts     

Dryden MW  Payne PA  Ridley R  Smith V 《Veterinary therapeutics : research in applied veterinary medicine》2005,6(1):15-28

A variety of procedures are available to detect parasite eggs or oocysts in feces. This study compared the efficacy of simple flotation, a commercial assay, and various centrifugation techniques and three common flotation solutions. Results indicate that centrifugation consistently recovered more eggs than other methods. Proper technique is critical, including ensuring that the specific gravity of the flotation solution is correct and allowing the sample to stand for a sufficient amount of time before examining the coverslip. Because of the zoonotic health risks of many companion animal parasites, veterinarian and their staff should better utilize fecal examinations in their routine diagnostic plan.  相似文献   

Osteoarthritis of the talocalcaneal joint in 18 horses     

Smith RK  Dyson SJ  Schramme MC  Head MJ  Payne RJ  Platt D  Walmsley J 《Equine veterinary journal》2005,37(2):166-171

REASONS FOR PERFORMING STUDY: Talocalcaneal osteoarthritis (TO) is an uncommon cause of moderate to severe hindlimb lameness, on which only isolated case reports have been published to date. OBJECTIVES: To review the clinical features of TO and determine optimal methods for diagnosis, management and prognosis. METHODS: The case records from 4 referral centres of 18 horses showing hindlimb lameness considered, as a result of clinical investigation, to be caused by TO, were reviewed. RESULTS: TO affected mature sports and pleasure horses (age 7-16 years) and caused moderate to severe lameness, usually of sudden onset with no obvious inciting cause. There were few localising signs, other than worsening of lameness by hock flexion. Tarsocrural joint analgesia produced improvement in lameness in 6/11 horses (55%) and perineural analgesia of the tibial and fibular nerves complete soundness in 6/14 horses (43%) in which it was performed; 7/14 horses (50%) showed a further substantial improvement. Radiological findings included subchondral bone lysis and sclerosis and irregular joint space width, seen most obviously in a lateromedial view. Nuclear scintigraphy revealed marked uptake of radiopharmaceutical predominantly plantaromedially in the region of the talus in the 7 horses in which it was performed. Fourteen horses were treated conservatively with box- or pasture-rest, with or without intra-articular corticosteroids, hyaluronic acid or polysulphated glycosaminoglycan, and all remained lame. Intra-articular corticosteroids appeared to have no effect in any horse. Of 10 horses receiving conservative management only, 6 were subjected to euthanasia, 3 were retired and 1 remained in light work, but was still lame. Two horses treated by either partial tibial and fibular neurectomy or subchondral forage failed to regain soundness and were retired. Six horses were treated by surgical arthrodesis of the talocalcaneal joint with 2 or three 5.5 mm AO screws introduced obliquely across the joint from the plantarolateral aspect of the calcaneus, which resulted in improvement in lameness in all cases. CONCLUSIONS: Osteoarthritis of the talocalcaneal joint causes acute onset severe lameness, but clinical findings and diagnostic analgesia often fail to identify precisely the site of pain. Consistent radiographic changes suggested TO was contributing to the lameness and this diagnosis was supported by nuclear scintigraphy. The poor success of conservative treatment (including intra-articular medication) suggests that surgical arthrodesis is the treatment of choice, although the prognosis is still poor for a return to full soundness. POTENTIAL RELEVANCE: The clinical features described should facilitate more accurate diagnosis and prognosis. A novel surgical treatment is described which appears to offer significant improvement in the lameness. Further work is necessary to determine the causes of this condition and more effective management.  相似文献   

Mortality of Missouri veterinarians   总被引：2，自引：0，他引：2  

R P Botts  S Edlavitch  G Payne 《Journal of the American Veterinary Medical Association》1966,149(5):499-504

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Fats and amino acids in broiler rations     

C. G. Payne  D. Lewis 《British poultry science》1963,4(2):179-190

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Structural proteins of two different plaque-size phenotypes of fowlpox virus   总被引：5，自引：0，他引：5  

K Nazerian  S Dhawale  W S Payne 《Avian diseases》1989,33(3):458-465

Structural polypeptides of two plaque-purified variant isolates of fowlpox virus differing in plaque morphology and size were examined by Coomassie blue-staining and immunoblot analysis of purified virions. A total of 30 structural polypeptides were observed, ranging in molecular weight from 14,100 to 122,600. A late polypeptide of 36,400 molecular weight was quite prominent in the small-plaque clone but absent in the large-plaque clone. Two other polypeptides, of 33,700 and 34,800 molecular weight, were present in virions from large-plaque virus and cell lysates of both clones but were absent in the small-plaque virions. These differences were observed whether the viruses were grown in chorioallantoic membrane or in chicken embryo fibroblast cultures. No difference was observed between the growth curves of the two virus clones. Differences observed in the polypeptides of the two viruses may be due to changes in the less conserved regions of viral DNA and may be used for differentiation of virus isolates.  相似文献   

Current approved drugs for aquatic species     

Haskell SR  Payne MA  Webb AI  Riviere JE  Craigmill AL 《Journal of the American Veterinary Medical Association》2004,224(1):50-51

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Effects of a novel carbohydrate and protein source on sow performance during lactation     

Payne RL  Lirette RD  Bidner TD  Southern LL 《Journal of animal science》2004,82(8):2392-2396

Ninety-one primiparous and multiparous sows and their pigs were used to evaluate the effects of a novel carbohydrate- and protein-based feed ingredient (Nutri-Pal, NP) on sow and litter performance during lactation. Nutri-Pal is a feed supplement for sows that consists of a blend of milk chocolate, brewer's yeast, whey products, and glucooligosaccharides. The dietary treatments consisted of a corn-soybean meal control and a corn-soybean meal plus 5% NP fed from d 110 of gestation to weaning. The diets were formulated to be equal in total Lys and ME. Sows were allotted to treatment based on parity, body weight, and the date of d 110 of gestation. There were 46 and 45 sows per treatment over four farrowing groups. Litters were standardized to 10 pigs and weighed within 1 d of farrowing, and all sows weaned at least 8 pigs at an average age of 21 d. Sows were weighed on d 110 of gestation, d 1 postfarrowing, and at weaning. Sows were fed three times daily during lactation. Sows were checked twice daily after weaning for signs of estrus. The weaning weight of sows fed NP was increased (P < 0.10) compared with those fed the control diet. Sows fed the control diet tended (P = 0.11) to lose more weight per day from d 110 of gestation to weaning than the sows fed NP. Otherwise, sow response variables (sow weight on d 110 of gestation and d 1 postfarrowing, d 110 of gestation to d 1 postfarrowing and lactation weight change per day, d 110 of gestation to d 1 postfarrowing, lactation, and total feed intake, days to estrus, pigs born alive or dead, and litter and average pig birth weight) were not affected (P > 0.10) by diet. There were no effects (P > 0.10) of diet on litter performance response variables (pigs weaned, litter and average pig weaning weight and gain, and survival percent). The NP feed ingredient had minor effects on sow productivity, but it did not affect litter productivity indices.  相似文献