Immunization against Marek's disease: influence of strain of chickens, maternal antibody, and type of vaccine   总被引：2，自引：0，他引：2  

J L Spencer  J S Gavora  A A Grunder  A Robertson  G W Speckmann 《Avian diseases》1974,18(1):33-44

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Congenital inguinal hernias associated with a rent in the common vaginal tunic in five foals     

G H Spurlock  J T Robertson 《Journal of the American Veterinary Medical Association》1988,193(9):1087-1088

Five foals were admitted because of colic that developed within 24 hours after birth. Physical examination revealed swelling from the inguinal region to the cranial aspect of the prepuce. Through the skin overlying the swelling, distended loops of bowel could be palpated. The hernias could be reduced with the foals restrained in dorsal recumbency. Surgical exploration showed the swelling to be an inguinal hernia with small bowel herniation through a rent in the common vaginal tunic. Concurrent rupture of the vaginal tunic should be suspected when a congenital inguinal hernia is associated with colic, swelling that extends to the prepuce, or intestine that is easily palpated within the hernial swelling. Repeated manual reduction in these cases would be of little benefit and surgical intervention would be recommended.  相似文献   

A new analgesic drug combination in the horse   总被引：1，自引：0，他引：1  

J T Robertson  W W Muir 《American journal of veterinary research》1983,44(9):1667-1669

A xylazine and butorphanol drug combination produced minimal and transient hemodynamic effects and no significant respiratory depression when administered to 6 healthy horses. Combining xylazine and butorphanol produced a synergistic analgesic effect and provided good chemical restraint for a standing surgical procedure.  相似文献   

Field evaluation of Newcastle disease immunisation by concurrent inactivated oil-emulsion and live B1 vaccines.     

W W Robertson  D Warden  I G Furminger 《The Veterinary record》1976,98(1):14-15

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Effects of prostaglandin F2 alpha and pregnant mares' serum gonadotropin (PMSG) on the reproductive performance of fluorogestone acetate PMSG-treated ewes     

A J Hackett  H A Robertson  M S Wolynetz 《Journal of animal science》1981,53(1):154-159

Two experiments were conducted to examine the effect of prostaglandin F2 alpha (PGF2 alpha) and pregnant mares' serum gonadotropin (PMSG) on the reproductive performance (fertility, prolificacy and fecundity) of ewes previously treated with fluorogestone acetate (FGA) and PMSG. In the first experiment, 29 ewes were synchronized for estrus with FGA and PMSG but not bred at the postsynchronization estrus. On day 10 of the first post-synchronization estrous cycle, they were injected IM with 15 mg PGF2 alpha and 500 IU PMSG and exposed to experienced, fertile, raddled rams. Twenty-four of the 29 ewes (83%) had viable fetuses 9 weeks after the PGF2 alpha-PMSG treatment. In the second experiment, 64 ewes were treated with FGA-PMSG, and 33 were exposed to fertile, raddled rams at the synchronized estrus. A second group of 31 ewes was not bred at the synchronized estrus, but on day 12 of the postsynchronized estrous cycle, they were injected IM with 15 mg PGF2 alpha and 500 IU PMSG and exposed to fertile, raddled rams. Sixty-six percent of the 33 ewes lambed in the FGA-PMSG-treated group and 60% of the 31 ewes lambed in the PGF2 alpha-PMSG-treated group. Differences in reproductive performance between these two treatment groups were not statistically significant. The results suggest that the PGF2 alpha-PMSG treatment combination does not adversely affect reproductive performance of ewes.  相似文献   

Utilization of inorganic iron by ruminants as influenced by form of iron and iron status of the animal     

C B Ammerman  J M Wing  B G Dunavant  W K Robertson  J P Feaster  L R Arrington 《Journal of animal science》1967,26(2):404-410

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Studies on Bluetongue: II. Complement-Fxing Activity of Ovine and Bovine Sera          下载免费PDF全文

Robertson A.  Appel M.  Bannister G. L.  Ruckerbauer Gerda M.    Boulanger P. 《Canadian journal of veterinary research》1965,29(5):113-117

Sera of sheep and calves infected with the California type 10 and Cyprus type 3 viruses of bluetongue were tested by the regular and modified direct complement-fixation tests. To obtain satisfactory complement fixation it was necessary to use the latter test. Cross reactivity was found, therefore, the California type 10 antigen could be used in testing sera of animals infected with the Cyprus virus.  相似文献   

Ultrastructural demonstration of mitochondrial calcium overload in myocardial cells from broiler chickens with ascites and induced hypoxia   总被引：1，自引：0，他引：1  

M.H. Maxwell  G.W. Robertson  M.A. Mitchell 《Research in veterinary science》1993,54(3):367

Two groups of young broiler chickens, namely, naturally occurring field cases of ascites and those with an induced hypoxia, were used in an ultrastructural study to examine the localisation and distribution of intracellular Ca²⁺ in cardiomyocytes. Age-matched healthy flockmates were used to control each group. Deposits of Ca²⁺ were located extensively in the mitochondria, sarcoplasmic reticulum and Golgi apparatus and sometimes in the myocyte and endothelial cell nuclei of both groups of birds. The results suggest that the cells from the hearts of the ascitic broilers may have been exposed to hypoxia since a large proportion of control material showed no Ca²⁺ activity in either mitochondria or nuclei. The presence of a Ca²⁺ overload in the mitochondria of cardiomyocytes from ascitic birds reared at low altitude or sea level suggests that these broilers were suffering from the deleterious effects of chronic hypoxia due to poor or reduced oxygen use.  相似文献   

Prevalence of feline leukaemia virus and antibodies to feline immunodeficiency virus in cats in the United Kingdom   总被引：10，自引：0，他引：10  

M J Hosie  C Robertson  O Jarrett 《The Veterinary record》1989,125(11):293-297

A representative sample of the pet cat population of the United Kingdom was surveyed. Blood samples from 1204 sick and 1007 healthy cats of known breed, age and sex were tested for antibodies to feline immunodeficiency virus (FIV) and feline leukaemia virus (FeLV). The prevalence of FIV was 19 per cent in sick cats and 6 per cent in healthy cats, and the prevalence of FeLV was 18 per cent in sick cats and 5 per cent in healthy cats; both infections were more common in domestic cats than in pedigree cats. Feline immunodeficiency virus was more prevalent in older cats but FeLV was more prevalent in younger cats. There was no difference between the prevalence of FeLV in male and female cats but male cats were more likely to be infected with FIV than female cats. No interaction was demonstrated between FIV and FeLV infections. Of the cats which were in contact with FIV in households with more than one cat, 21 per cent had seroconverted. The prevalence of FeLV viraemia in cats in contact with FeLV was 14 per cent. The clinical signs associated with FIV were pyrexia, gingivitis/stomatitis and respiratory signs, and with FeLV, pyrexia and anaemia. It was concluded that both viruses were significant causes of disease, and that the cats most likely to be infected with FIV were older, free-roaming male cats and for FeLV, younger, free-roaming cats.  相似文献   

THE FUSARIUM YELLOWS DISEASE OF GLADIOLUS   总被引：1，自引：1，他引：0  

E. W. Buxton  N. F. Robertson 《Plant pathology》1953,2(2):61-64

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