Sectional notes     

Frank E. Garrett  M. A. Lindsay  John R. Robertson  W. B. Ward  Verne C. Beverly  J. J. Shaughnessy  H. J. Evans  K. W. Lauer  W. c. Barnes  Harold L. Bailey  Harold S. Schaad 《American Journal of Potato Research》1947,24(3):90-102

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Sectional notes     

W. B. Ward  Verne C. Beverly  H. A. Reiley  Marx Koehnke  John C. Camp-Bell  W. J. Evans  C. A. Henderson  H. E. Finnell  W. W. Keenan  R. E. Goodin 《American Journal of Potato Research》1947,24(11):381-387

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Effects of parasitism and of supplementing ewes with methyl methionine hydroxy analogue on the wool production of their lambs as adults     

JL WHEELER  AJ WILLIAMS  WH SOUTHCOTT 《Australian veterinary journal》1988,65(11):358-359

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Oral Newcastle disease vaccination with V4 virus in chickens: comparison with other routes   总被引：3，自引：0，他引：3  

PB SPRADBROW  JL SAMUEL 《Australian veterinary journal》1991,68(3):114-115

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Vesicular stomatitis.   总被引：4，自引：0，他引：4  

Beverly Schmitt 《Veterinary Clinics of North America: Food Animal Practice》2002,18(3):453-9, vii-viii

Vesicular stomatitis is an infrequent yet important vesicular disease of cattle, horses, and swine. Periodic outbreaks of this disease in the United States have caused economic losses in cattle herds because of decreased production, movement restrictions, and trade embargoes. Vesicular stomatitis causes clinical signs indistinguishable from those of foot-and-mouth disease. It is of utmost importance that appropriate samples are collected from clinical cases of vesicular disease in cattle and swine so a rapid laboratory diagnosis can be made.  相似文献   

Effects of ionophores on cow herd production: a review     

L R Sprott  T B Goehring  J R Beverly  L R Corah 《Journal of animal science》1988,66(6):1340-1346

Feeding ionophores to beef cows or replacement heifers fed harvested forages increases weight gain and improves feed efficiency. These responses are influenced by diet quality and body condition of the animal. These compounds may reduce postpartum interval to estrus, but this effect appears to be diminished if nutritional status is poor. Although ionophores do not alter fertility, they decrease age at puberty in the female. These changes in reproductive performance appear to be related to a hormonal response to an increased propionate:acetate ratio in the rumen characteristic of ionophore feeding. Responses to ionophores in milk yield and weight gain improvements in calves of ionophore-fed cows are variable. Length of gestation, incidence of dystocia, calf birth weights and percent calf crop are not altered by ionophore feeding. The potential to improve cow herd production through the use of ionophores depends primarily on forage quality and availability.  相似文献   

Mycoplasma haemofelis and Mycoplasma haemominutum detection by polymerase chain reaction in cats from Saskatchewan and Alberta          下载免费PDF全文

Kewish KE  Appleyard GD  Myers SL  Kidney BA  Jackson ML 《The Canadian veterinary journal. La revue veterinaire canadienne》2004,45(9):749-752

Hemobartonellosis is caused by Mycoplasma haemofelis, previously known as Haemobartonella felis. Cats infected with this organism typically develop regenerative anemia. The related species Mycoplasma haemominutum may also cause anemia. The purposes of this study were to use polymerase chain reaction technology to determine if both organisms exist in naturally infected cats from Saskatchewan and Alberta, and to determine if disease manifestation corresponds to mycoplasma species. Thirteen of 18 cats with regenerative anemia were infected, 12 with M. haemofelis and 1 with M. haemominutum. Eight of 22 cats with nonregenerative anemia were infected, 4 with M. haemofelis and 4 with M. haemominutum. Two of 20 cats with normal complete blood (cell) counts were infected with M. haemominutum. Although both mycoplasma species were identified, ill cats were more often infected with M. haemofelis.  相似文献   

Congenital myasthenia gravis in Smooth-Haired Miniature Dachshund dogs     

Dickinson PJ  Sturges BK  Shelton GD  LeCouteur RA 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2005,19(6):920-923

Three 8-week-old Miniature Smooth Haired Dachshund littermates were diagnosed with myasthenia gravis based on clinical signs, results of electrophysiological testing, and response to the short-acting anticholinesterase drug, edrophonium chloride. Congenital myasthenia gravis was confirmed by the demonstration of decreased acetylcholine-receptor density in external intercostal muscle in the absence of demonstrable serum antiacetylcholine receptor antibody or antibodies complexed to acetylcholine receptors in muscle biopsy samples. Unlike most previously reported cases of congenital myasthenia gravis that are relentlessly progressive, clinical signs resolved spontaneously by 6 months of age.  相似文献   

Detection of clusters of Salmonella in animals in Ontario from 1991 to 2001     

Zhang X  McEwen B  Mann E  Martin W 《The Canadian veterinary journal. La revue veterinaire canadienne》2005,46(6):517-523

The temporal patterns of Salmonella serovars isolated from animals in Ontario by 2 major laboratories between 1991 and 2001 were identified. Overall, the number of isolates remained relatively stable and the more frequent isolates were dominant, as in earlier surveys. However, the temporal patterns of specific isolates and the serovars isolated differed depending on the laboratory, species of animal, and reason for obtaining the culture (monitoring versus diagnostic sample). A number of temporal clusters were identified, but their dates of occurrence differed by laboratory. Whereas the laboratories serve an essential role for diagnosis and monitoring, the summary information should be interpreted cautiously. The importance of additional information, such as demographic source, specimen type, and appropriate denominator, when interpreting the data is discussed.  相似文献   

Determination of serum ionized calcium concentration in dairy cattle after frozen anaerobic storage     

Roeder BL  Clark FD 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》1995,24(2):44-48

The stability of serum ionized calcium concentration (ICa) from dairy cows was studied after anaerobic collection and frozen storage. Paired blood samples were obtained from five groups of cows: nonlactating, first third of lactation, midlactation, last third of lactation, and 2-year-old nonlactating heifers. Vacutainer multiple sample needles and serum separator tubes (SST) were used for venipuncture. Aspiration of serum was within 1.5 hours after collection: one sample for immediate determination (within 2 hours of collection); the other sample stored at -4 degrees C in evacuated plastic vacutainer tubes filled with serum to provide dead space of less than 75% of volume, and analyzed after 14 to 30 days in storage (half, 15, of the samples from each lactation group were analyzed after frozen anaerobic storage at 14 or 30 days, respectively). Processing samples in this manner significantly altered the values obtained for ICa, normalized calcium concentration (NCa), and pH. Analysis after frozen storage in evacuated tubes caused ICa and NCa concentrations to decrease and pH to increase (P< 0.05); total calcium levels were not significantly different from initial values. There were no significant differences among lactation groups. The difference between values obtained from these paired samples was either due to loss of CO(2) during transfer from the SST to the evacuated tube or during frozen storage. Changes in samples assayed after freezing and storage could be adjusted to original values by using the mean difference between the fresh and frozen levels as correction factors: ICa (+0.4379), NCa (+0.2797), and pH (-0.0926). It was concluded that immediate determination of serum ICa in dairy cattle is the ideal but using this methodology and performing analyses later may be acceptable if correction factors are determined.  相似文献