Differences in chondroitin AC lyase activity of Flavobacterium columnare isolates   总被引：1，自引：1，他引：0  

K M Stringer-Roth  W Yunghans  L F Caslake 《Journal of fish diseases》2002,25(11):687-691

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Nitrogen retention and performance of brown laying hens on diets with different protein content and constant concentration of amino acids and energy.   总被引：1，自引：0，他引：1  

A Meluzzi  F Sirri  N Tallarico  A Franchini 《British poultry science》2001,42(2):213-217

1. The aim of this study was to determine the nitrogen balance and the performance of laying hens fed on diets with a protein content lower than the diets currently used in commercial practice but with adequate concentrations of lysine, sulphur amino acids, tryptophan and threonine. 2. Ninety-six Hy-Line Brown hens, 24 weeks old, were divided into 3 groups of 8 replicates and received, for 16 weeks, diets formulated to have 3 different protein concentrations: 170 (control), 150 and 130 g/kg CP and the same energy content. For each protein concentration, the contents of lysine, methionine, methionine+cystine, tryptophan and threonine were maintained at minimum requirement concentrations by supplying synthetic amino acids. 3. In the first half of the trial, egg production and egg weight were similar in all groups. From the 9th week onwards group 150 CP laid heavier eggs and had a slightly lower egg deposition and total mass. Food conversion ratio was best in the control group. 4. Nitrogen intake was related to the protein concentration of the diet, the food intake being almost the same in the 3 experimental groups. Faecal nitrogen content significantly and linearly decreased with reduction in dietary protein content and was about 50% of the intake. Considering the nitrogen faecal/intake ratio, the 150 CP group showed better nitrogen utilisation at each sampling time.  相似文献   

The Real James Herriot: The Authorized Biography          下载免费PDF全文

John F. Prescott 《The Canadian veterinary journal. La revue veterinaire canadienne》2001,42(5):377

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Morphine and pethidine antinociception in the crocodile     

T. I. KANUI  K. HOLE 《Journal of veterinary pharmacology and therapeutics》1992,15(1):101-103

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A new intravenous anesthetic agent: propofol.   总被引：2，自引：0，他引：2       下载免费PDF全文

T Duke 《The Canadian veterinary journal. La revue veterinaire canadienne》1995,36(3):181-183

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Suspected Tension Pneumomediastinum In A Dog: A Case Report     

Elke Rudloff DVM  Dennis T. Crowe DVM  Jr. Rebecca Kirby DVM  Bobbie Mammato DVM  MPH 《Journal of Veterinary Emergency and Critical Care》1996,6(2):103-107

Successful resuscitation of a trauma-induced, suspected tension pneumomediastinum in a dog is presented. The cause was a caudal cervical penetration wound which acted as a one-way valve allowing air to enter, but not exit, the cranial mediastium. Early in the course of hospitalization, respiratory and cardiovascular collapse occurred; an emergent parasternotomy allowed decompression of the mediastinum, and the cradiovascular system immediately responded. The dog made a complete recovery following surgical exploration and removal of contaminated mediastinal tissue. Nine days of intensive care included 24-hour monitoring, oxygen therapy, intravenous crystalloids and colloids, continuous pleural suctioning, nutritional support, antibiotics, and pain control.  相似文献   

Enterococcus hirae in septicaemia of psittacine birds.     

L A Devriese  J I Cruz Colque  F Haesebrouck  M Desmidt  E Uyttebroek  R Ducatelle 《The Veterinary record》1992,130(25):558-559

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Chronic partial obstructive urolithiasis causing hydronephrosis and chronic renal failure in a steer.     

B M Aldridge  F B Garry 《The Cornell veterinarian》1992,82(3):311-317

A 13-month-old Angus steer was examined with a 6-week history of lethargy, malaise and dribbling urine. Laboratory exam revealed crystalluria and poor renal function. Ultrasound revealed hydronephrosis and hydroureter. Euthanasia was chosen because of a poor prognosis for economic recovery. Necropsy demonstrated numerous calculi causing partial urethral obstruction approximately 25 cm from the end of the penis. Secondary renal changes were confirmed. Urolithiasis occurs commonly in ruminants. Secondary obstruction is usually complete with severe consequences. This is the first report of chronic partial obstructive urolithiasis resulting in endstage renal disease.  相似文献   

Seroprevalence of porcine and human influenza A virus antibodies in pigs between 1986 and 1988 in Hassia     

X M Zhang  W Herbst  H Lange-Herbst  T Schliesser 《Zentralblatt für Veterin?rmedizin. Reihe B. Journal of veterinary medicine. Series B》1989,36(10):765-770

1,268 sera collected from slaughtered pigs in Hassia (FRG) from 1986 to 1988 were tested for antibodies against porcine and human influenza A virus strains using the single radial haemolysis test (SRHT). Antibodies against the porcine strains (subtype H1N1) A/Swine/Arnsberg/1/81, A/Swine/Iowa/15/30 and A/New Jersey/7/76 were detected in 411 (32.4%), 318 (25.1%) and 304 (24.0%) of sera, respectively. Up to 1988 a slight increase (10%) in the seroprevalence to A/Swine/Arnsberg/1/81 was noticed, whereas the results obtained with the other strains showed little variation. Antibodies against the human H1N1 strain A/Singapore/6/86 were only found in sera collected 1987 and 1988 in rates of 1.6% and 3.0%. Serological indication of infections with the human H3N2 strains A/Victoria/1/75, A/Hong Kong/1/68 and A/Philippines/2/82 could be shown in 286 (22.6%), 178 (14.4%) and 135 (10.6%) of the serum samples. Within the three year period the rate of sera positive for antibodies against A/Philippines/2/82 increased from 6.5% to 23.0%, whereas no variation in the rates were found using the other H3N2 strains. Antibodies simultaneously against porcine (H1N1) and human (H3N2) virus strains were detected in 9.9% of all sera tested.  相似文献   

Use of cyproterone acetate to lower circulating corticosterone and its effects on lymphocytes in domestic fowl     

T F Davison  A R Ezzat  J Rea 《Research in veterinary science》1989,46(1):105-109

Chickens were given daily injections of cyproterone acetate (CA) and the effects on plasma corticosterone, bodyweight, weights of the adrenals and lymphoid organs, numbers of circulating peripheral blood lymphocytes and their proliferation in the presence of lectins, concanavalin A (Con A) and phytohaemagglutinin (PHA), were investigated. Five daily doses of 10 or 30 mg CA kg-1 bodyweight each week over a three-week period caused a decrease in weight gain and a reduction in the relative weights of the bursa and thymus but not the spleen. There was a small decrease in the adrenals after treatment with 10 mg CA kg-1. When daily injections of CA were given over a seven-day period doses of 6 and 10 mg CA kg-1 bodyweight caused a significant (P less than 0.05) decrease in plasma corticosterone concentration after four days. However, after eight daily injections of CA a single injection of corticotrophin (10 iu ACTH kg-1) increased circulating corticosterone indicating CA had not completely blocked adrenal synthesis. CA had no effect on numbers of circulating peripheral blood lymphocytes or their ability to proliferate in the presence of Con A or PHA. The results indicate that CA is effective in lowering circulating corticosterone in the fowl but this did not affect the numbers or responsiveness of peripheral blood lymphocytes.  相似文献