A cytomegalovirus isolated from swine testicle cell culture   总被引：1，自引：0，他引：1  

J Shirai  M Narita  Y Iijima  H Kawamura 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1985,47(5):697-703

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Duration of maternally derived antibodies against equine influenza in newborn foals     

I K Liu  D R Pascoe  L W Chang  Y C Zee 《American journal of veterinary research》1985,46(10):2078-2080

Serum antibody concentrations against influenza A-equi-1 virus and A-equi-2 virus were measured in a group of 18 foals from birth to 4 months of age. More than 50% of the foals were seronegative to A-equi-1 virus infection by 4 weeks of age, with titers of less than or equal to 1:16. For A-equi-2 virus, more than 50% of the foals were seronegative by 2 weeks of age, with titers of less than or equal to 1:8. Passively derived antibodies against influenza A-equi-1 virus and A-equi-2 virus in foals obtained from recently vaccinated mares and from mares not vaccinated within 6 months before foaling were low in titer. The duration of passively derived antibodies was also short-lived.  相似文献   

Ultrastructure of goat testes: tubulobulbar complexes between spermatids and Sertoli cells     

Y Kojima 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1990,52(4):781-786

The fine structure of tubulobulbar complex (TBC) of goat seminiferous epithelium was studied using testicular samples fixed by perfusion. During the maturation phase of the spermatid, the TBC appeared on the periphery of the head before spermiation, dorsal and ventral parts of the head, both sides of the acrosome and on the postnuclear sheath region. At an early stage of the development of the TBC, a partial loss of smooth endoplasmic reticulum in the ectoplasmic specialization of a neighboring Sertoli cell was observed; filament bundles disappeared and a small fragmented smooth endoplasmic reticulum was left. Subsequently, a spermatid vesicle (coated vesicle) expanded to be in contact with the Sertoli cytoplasm by a small channel. These tubular projections extended to form a bulbous balloon-like structure forming sometimes a bi-balloon appearance, until torn off from the spermatid into the Sertoli cytoplasm and probably digested by the Sertoli cell. The significance of this structural development was morphologically discussed.  相似文献   

Poxvirus infection in Nile crocodiles (Crocodylus niloticus)   总被引：1，自引：0，他引：1  

G S Pandey  N Inoue  K Ohshima  K Okada  Y Chihaya  Y Fujimoto 《Research in veterinary science》1990,49(2):171-176

An outbreak was encountered of numerous yellowish cutaneous nodules in one- to two-year-old farmed Nile crocodiles (Crocodylus niloticus) in Kasaba Bay Crocodile Farm at Lake Tanganyika in Zambia during 1988. Out of 4000 crocodiles of different age groups, 300 yearlings were affected and 82 of those affected died. The lesions were prominent on the head, especially around the eyelids, the nostrils, both sides of the mouth, ventral neck, ventral pale belly, limbs and the root of the tail. Histologically, the epidermal lesions revealed large focal areas of marked acanthosis accompanied by hyperkeratosis and parakeratosis. In the prickle cells, there were multiple small neutrophilic granular inclusions and large eosinophilic homogeneous cytoplasmic inclusions. Electron microscopically, there were numerous poxvirus particles and matrices in the cytoplasm of many prickle cells. Dark blue homogeneous cytoplasmic inclusions in toluidine blue sections consisted of an electron opaque matrix with mature viral particles (160 x 200 x 230 nm). Furthermore, there were clumps of granular matrix containing immature viral particles (200 x 399 nm) in the cytoplasm. Various features of viral developing processes were observed.  相似文献   

Inoculum levels ofVerticillium dahliae in the soils of the hot semi-arid negev region of Israel     

Y. Ben-Yephet  Y. Szmulewich 《Phytoparasitica》1985,13(3-4):193-200

In the Negev area,Verticillium dahliae Kleb. produces 50 times more microsclerotia (MS) on potato plants harvested in the winter than on those harvested in the summer. Number and distribution of viable fungal units, subsequent to incorporation of infected potato plants and during a sequence of non-susceptible hosts, were estimated in February of the following years by counting fungal units in four sublayers: 0–10, 10–20, 20–30 and 30–40 cm. Inoculum density ofV. dahliae was the highest in the top layer, decreasing to the deepest sublayer. Reduction of population density of viableV. dahliae units was less in the field than in the laboratory. No viable units were detected after 5 years of storage in the laboratory, whereas 4% of the original population remained viable after 7 years of crop rotation. Although crop rotation did not control the fungus completely, it did reduce inoculum density markedly.  相似文献   

    

Y.  Zmölfer und Fri  Ernst 《Forstwissenschaftliches Centralblatt》1931,53(6):233-236

Ohne Zusammenfassung  相似文献   

The estimation of drug residue in pig kidney by repeated biopsy     

Y Takahashi  Y Kido  M Naoi  E Kokue 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1985,47(5):705-709

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An attempt to eradicate bovine leukemia virus infection in a public pasture     

H Itoh  N Ogasawara  K Ohshima  K Okada  S Numakunai  Y Seimiya 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1990,52(3):661-663

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Evaluation of Three Soybean Products in Diets Fed to Juvenile Hybrid Striped Bass Morone saxatilis×M. chrysops     

P. B. Brown    R. Twibell    Y. Jonker  K. A. Wilson 《Journal of the World Aquaculture Society》1997,28(3):215-223

Juvenile hybrid striped bass Morone saxatilis×M. chrysops were fed practical diets containing graded levels of either solvent-extracted soybean meal, roasted soybeans, or raw, unprocessed soybeans. Two separate 10-wk studies were conducted; within each study, there were two separate evaluations of soy products. In the first study, weight gain and feed efficiency of fish fed 45% or higher levels of soybean meal were significantly lower than fish fed the positive control diet, while weight gain and feed efficiency of fish fed 30% soybean meal were not significantly different than fish fed the control diet. Fish fed the lowest level of unprocessed soybean (20%) exhibited significantly depressed weight gain and feed efficiency compared to fish fed the control diet. In the second study, weight gain and feed efficiency of fish fed 40% roasted soybeans were significantly lower than fish fed the control diet, but weight gain and feed efficiency of fish fed 20% roasted soybeans were not significantly lower than fish fed the control diet. In both studies, whole body proximate composition values were significantly different among treatments. Whole-body lipid concentrations were significantly higher in fish fed certain levels of soy products, but only at levels above those eliciting depressions in weight gain and feed efficiency. A further evaluation of solvent-extracted soybean meal was conducted with incorporation levels of 20–40% of the dry diet in gradations of 5% with a nutritionally complete mineral premix. Weight gain and feed efficiency of fish fed any level of soybean meal in that study were not significantly different from fish fed a positive control diet. Whole body proximate components were not significantly different between treatments. Unprocessed soybeans apparently have little potential as an ingredient in diets fed to juvenile hybrid striped bass; roasting, or heat treatment, improves their use. Solvent extracted soybean has the potential of supplying the majority of crude protein in diets fed to juvenile hybrid striped bass. Incorporation of complete mineral premixes seems beneficial with higher levels of solvent-extracted soybean meal.  相似文献   

Mitigation of the response of Friesian calves to live Babesia bovis vaccine by treatment with long acting oxytetracycline     

E Pipano  Y Krigel  A Markovics  E Rubinstein  M Frank 《The Veterinary record》1985,117(16):413-414

Forty 11- to 13-month-old Friesian calves were inoculated with live Babesia bovis vaccine. Twenty of the calves were treated with long acting oxytetracycline seven and 15 days after receiving the vaccine. Parasites were detected in nine of the treated calves compared with all 20 of the untreated control group. Treated calves were less febrile and had higher packed cell volumes than control animals. All calves from both groups developed a considerable antibody titre to B bovis. It appears that long acting oxytetracycline can mitigate the response of sensitive cattle breeds to live antibabesial vaccine and prevent damage caused by excessive multiplication of B bovis parasites.  相似文献