Fertilizing capacity of the ejaculate of nutria (Myocastor coypus) after the removal of the seminal vesicles as evaluated by the penetration test and natural mating     

I Jakubicka  M Barta  P Babusík 《Veterinární medicína》1989,34(7):441-446

The fertility of male coypu sperm following seminal vesicle extirpation was investigated using the penetration test into the egg of Syrian golden hamster (Mesocricetus auratus). Ejaculates were obtained from five males by means of electro-ejaculation under halothane narcosis. The results of the zona-free hamster eggs (ZFHE) penetration test showed that the ejaculates of all the surgically treated coypu males were fertile and that ZFHE value fluctuated from 54 to 76.6%. The results obtained in experiments with natural mating revealed that the extirpation of male coypu seminal vesicles did not affect their fertility. In total 47 foetuses were found post mortem in ten coypu females covered by surgically treated males, which on average represented 4.7 foetuses per female.  相似文献   

Contribution of propylene glycol-induced Heinz body formation to anemia in cats     

M M Christopher  V Perman  J W Eaton 《Journal of the American Veterinary Medical Association》1989,194(8):1045-1056

Propylene glycol (PG) is a common preservative and source of synthetic carbohydrates in soft-moist pet foods. Propylene glycol was fed to cats for 5 weeks at concentrations found in commercial diets (1.6 g/kg of body weight; 12% of diet on a dry-weight basis) and for 3 weeks at concentrations exceeding usual intake (8 g/kg; 41% of diet). There was a dose-dependent increase in Heinz body percentage to 28% in cats fed the low dose of PG and to 92% in cats fed the high dose. Erythrocyte half-life, measured using [14C]-cyanate hemoglobin (Hb), decreased significantly (P less than 0.05) by 18.8% and 60% in cats fed the low and high PG doses, respectively. The PCV in cats fed the low dose was unaffected, whereas cats fed the high dose had a mean (+/- SEM) decrease in PCV from 33.5 +/- 1.05% to 26.3 +/- 1.45%, accompanied by punctate reticulocytosis and bone marrow erythroid hyperplasia. A dose-dependent increase in iron pigment was found in the liver and spleen of all cats. In cats fed the low dose of PG, erythrocyte reduced glutathione concentration actually increased from 7.02 +/- 0.56 to 9.74 +/- 0.69 mumol/g of Hb, but decreased to 2.96 +/- 0.27 mumol/g of Hb in cats fed the high dose. There was no significant increase in methemoglobin concentration. These results indicated that PG cannot be considered innocuous even at concentrations consumed by cats eating commercial diets. Heinz body-induced acceleration of RBC destruction develops in a dose-dependent manner, so that cats with greater food intake, ie, lactating queens and nursing kittens, are at greater risk for development of PG-induced Heinz body hemolytic anemia.  相似文献   

Oesophagogastric parakeratosis in the growing pig: effects of the physical form of barley-based diets and added fibre   总被引：1，自引：0，他引：1  

Z V Potkins  T L Lawrence  J R Thomlinson 《Research in veterinary science》1989,47(1):60-67

In four experiments a total of 288 individually fed pigs were given barley-based diets for about 100 days from about 20 kg liveweight. Fine grinding of barley increased the number and severity of oesophagogastric lesions. Pelleting a diet based on coarsely ground barley had a similar effect. Coarser grinding of the barley and substituting small proportions of oat husk, but not of bran, gave lower incidences and severities of lesions. The performance responses of the pigs differed and give a framework for deciding on the balance to be struck between optimal performance and the risk of lesion development.  相似文献   

YELLOW FEVER AND THE PANAMA CANAL     

Kellogg VL 《Science (New York, N.Y.)》1906,23(577):114-115

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ECTO-PARASITES OF THE MONKEYS,APES AND MAN     

Kellogg VL 《Science (New York, N.Y.)》1913,38(982):601-602

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TREATMENT OF FOUL-IN-THE-FOOT AND ACUTE INFLAMMATION OF THE SKIN BY A KAOLIN-GLYCERINE MIXTURE     

J. W. RAINEY M.R.C.V.S. 《Australian veterinary journal》1948,24(7):164-165

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The Change in the Leucocytic Formula by the Leucocytosis-promoting Factor of Exudates in Experimental Leucemia     

Menkin V 《Science (New York, N.Y.)》1948,107(2786):546-547

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Potato culture and storage investigations in 1938 and 1939     

E. V. Hardenburg 《American Journal of Potato Research》1940,17(3):60-65

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RECENT PSYCHICAL RESEARCHES     

P V 《Science (New York, N.Y.)》1886,7(156):91-92

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A specific DNA probe which identifies Babesia bovis in whole blood.     

W Petchpoo  P Tan-ariya  V Boonsaeng  C R Brockelman  P Wilairat  S Panyim 《Veterinary parasitology》1992,42(3-4):189-198

A genomic library of Babesia bovis DNA from the Mexican strain M was constructed in plasmid pUN121 and cloned in Escherichia coli. Several recombinants which hybridized strongly to radioactively labeled B. bovis genomic DNA in an in situ screening were selected and further analyzed for those which specifically hybridized to B. bovis DNA. It was found that pMU-B1 had the highest sensitivity, detecting 25 pg of purified B. bovis DNA, and 300 parasites in 10 microliters of whole infected blood, or 0.00025% parasitemia. pMU-B1 contained a 6.0 kb B. bovis DNA insert which did not cross-hybridize to Babesia bigemina, Trypanosoma evansi, Plasmodium falciparum, Anaplasma marginale, Boophilus microplus and cow DNA. In the Southern blot analysis of genomic DNA, pMU-B1 could differentiate between two B. bovis geographic isolates, Mexican strain M and Thai isolate TS4. Thus, the pMU-B1 probe will be useful in the diagnosis of Babesia infection in cattle and ticks, and in the differentiation of B. bovis strains.  相似文献