The effect of milk cultures on the survival of salmonellae in milk     

J Lukásová  P Radová  M Sojková  J Krystofová 《Veterinární medicína》1990,35(2):81-86

The influence was investigated of yoghurt and cream cultures on salmonella survival in milk. Salmonella-contaminated milk was blended with yoghurt culture and kept for three hours at the temperature of 43 degrees C; the mixture with cream culture was kept for 20 hours at the temperature of 22 degrees C. The samples were then stored at a room temperature and at the temperature of 4 degrees C. The two milk cultures exerted inhibitory effects on salmonellae within the range of 92.5 to 99.8%. The inhibitory effects depended on the activity of the culture (expressed by titration acidity), storage time and temperature and on the starting concentration of salmonellae.  相似文献   

Detection of staphylococcal enterotoxins in milk and milk products     

C Grieger  D Badidová  E Bednarcíková  O Burdová  M Háber 《Veterinární medicína》1990,35(3):171-178

For food evaluation the determination of the number of Staphylococcus aureus (hereinafter S. aureus) colonies is insufficient in view of present scientific knowledge. The results, advantages and shortcomings of diagnostic methods are demonstrated on an example of three methods of detection of staphylococcal enterotoxins in milk and milk products. 133 strains were investigated by the method of biotyping of S. aureus strains. Four strains of S. aureus were included in biotype A, seven xin-producing strains were isolated seventeen times by detection of 96 S. aureus strains were not included in any biotype, the other strains belonged to biotypes C and E. This method can be used as an auxiliary method of evaluation of foods containing S. aureus bacteria. The agar-gel precipitation method of enterotoxin detection in isolated strains of S. aureus has just restricted validity. The enteroto-strains. The main shortcoming of this method is a fact that the result concerning the isolated strains need not be identical with the result of enterotoxin detection in food. Direct assays of staphylococcal enterotoxins in milk and milk products using an enzymoimmunological method seem to be the most promising, mainly due to their high sensitivity (0.0001-0.001 micrograms.ml1-) and other advantages. Positive and negative results are presented on an example of two model trials with winter sheep milk cheese.  相似文献   

Gross and histopathological study of experimental Mycoplasma mastitis of cattle     

M J Mészáros  G Horváth  L Stipkovits  Z Varga 《Acta veterinaria Hungarica》1986,34(3-4):201-209

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Evaluation of the efficacy of prophylactic hoof health examination and trimming during midlactation in reducing the incidence of lameness during late lactation in dairy cows     

Hernandez JA  Garbarino EJ  Shearer JK  Risco CA  Thatcher WW 《Journal of the American Veterinary Medical Association》2007,230(1):89-93

OBJECTIVE: To assess the efficacy of prophylactic hoof health examination and trimming during midlactation at reducing the incidence of lameness during late lactation in dairy cows. DESIGN: Randomized field trial. ANIMALS: 333 Holstein cows. PROCEDURES: Cows without apparent lameness were randomly allocated into 1 of 2 groups approximately 204 days after calving. Cows allocated to the treatment group (n = 161) were examined on a tilt table for diagnosis and underwent hoof-trimming procedures, if needed, for treatment of hoof disorders or lesions. Cows in the control group (n = 172) were not examined. Cows were assigned a locomotion score weekly for 28 weeks after allocation to a group. The number of cows classified as lame during late lactation (approx 205 to 400 days after calving) was compared between groups to assess the efficacy of prophylactic examination and trimming. RESULTS: Incidence of lameness during late lactation was 24% in cows in the control group and 18% in cows in the treatment group. CONCLUSIONS AND CLINICAL RELEVANCE: The 25% decrease in number of new cases of lameness in cows undergoing prophylactic hoof health examination and trimming during midlactation may be relevant for the well-being of dairy cows and should not represent a major economic burden to producers.  相似文献   

Pharmacokinetics of a single intravenous dose of marbofloxacin in adult donkeys   总被引：1，自引：0，他引：1  

González F  Rodríguez C  De Lucas JJ  Waxman S  San Andrés MD  Serres C  Nieto J  San Andrés MI 《The Veterinary record》2007,161(4):133-136

Six donkeys each received 2 mg/kg marbofloxacin as a 10 per cent aqueous solution administered intravenously. Principal pharmacokinetic parameters were determined and two efficacy indices were computed by using pharmacokinetic parameters and selected mic90 values of marbofloxacin against pathogenic equine strains to predict the efficacy of the drug at this dose. The pharmacokinetics of marbofloxacin in donkeys was characterised by a large mean volume of distribution at a steady state (1.15 [0.09] l/kg) and a long mean (sd) elimination half-life of 9.24 (1.96) hours. It was also characterised by a relatively slow total body clearance of 0.10 (0.02) l/kg/hour, slower than in horses. Using mic90 values of marbofloxacin against pathogenic equine strains with a daily dose of 2 mg/kg, appropriate values of efficacy indicators were obtained only for Enterobacteriaceae. Daily intravenous doses of 0.33, 2.62 and 20 mg/kg were calculated for evaluation in clinical trials of infections due to Enterobacteriaceae, Staphylococcus aureus and Streptococci, respectively.  相似文献   

Photosensitisation in sheep grazing alfalfa infested with aphids and ladybirds     

Ferrer LM  Ortín A  Loste A  Fernández A  Verde MT  Ramos JJ 《The Veterinary record》2007,161(9):312-313

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Intracorporeal suture reinforcement during laparoscopic gastropexy in dogs     

Sánchez-Margallo FM  Díaz-Güemes I  Usón-Gargallo J 《The Veterinary record》2007,160(23):806-807

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Effect of carazolol on the oestrous behaviour and concentrations of luteinising hormone and steroids in lactating cows during the periovulatory period     

España F  Pérez-Marín CC  Santiago-Moreno J  Ziecik A 《The Veterinary record》2007,160(23):799-803

Twelve multiparous, cycling, lactating Holstein-Friesian cows were synchronised with prostaglandin F(2alpha) and treated with either 2.5 mg carazolol or saline. There were no differences between the peripheral blood concentrations of oestradiol or progesterone, but in the cows treated with carazolol the periovulatory surge of luteinising hormone was delayed, and oestrous behaviour was expressed later than in the control cows.  相似文献   

Mycoplasmas isolated from Spanish ibex (Capra pyrenaica hispanica): frequency and risk factors     

González-Candela M  Verbisck-Bucker G  Martín-Atance P  Cubero-Pablo MJ  León-Vizcaíno L 《The Veterinary record》2007,161(5):167-168

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Fungal pneumonia caused by Penicillium brevicompactum in a young Staffordshire bull terrier     

Caro-Vadillo A  Payá-Vicens MJ  Martínez-Merlo E  García-Real I  Martín-Espada C 《The Veterinary record》2007,160(17):595-596

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