Management of a schwannoma in the larynx of a lion     

J Paul-Murphy  K Lloyd  J M Turrel  P C Blanchard  L Gage  M Fowler 《Journal of the American Veterinary Medical Association》1986,189(9):1202-1203

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Efficacy of a drug combination of praziquantel, pyrantel embonate, and febantel against helminth infections in dogs.     

S Lloyd  M A Gemmell 《American journal of veterinary research》1992,53(12):2272-2273

Tablets containing praziquantel, pyrantel embonate, and febantel were tested for efficacy against helminths in dogs. A single treatment with this drug combination gave 100% reductions in Toxocara canis and Taenia hydatigena in experimentally induced infections in dogs. In dogs with naturally acquired infections, treatment gave > 97 to 98% reductions in fecal egg counts attributable to Toxascaris leonina, T canis, and Uncinaria stenocephala. Efficacy against Trichuris vulpis was > 92%.  相似文献   

Annual Turnover of Fox Populations in Europe*     

H. G. Lloyd  B. Jensen  J. L. Van Haaften  F. J. J. Niewold  A. Wandeler  K. Bgel  A. A. Arata 《Zoonoses and public health》1976,23(7):580-589

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Influence of dietary manganese on performance, lipid metabolism, and carcass composition of growing and finishing steers     

Legleiter LR  Spears JW  Lloyd KE 《Journal of animal science》2005,83(10):2434-2439

A study was conducted to determine the effect of dietary Mn on performance of growing and finishing steers, and to evaluate the effect of pharmacological concentrations of Mn on lipid metabolism and subsequent carcass quality in steers. One hundred twenty Angus cross steers were blocked by BW and origin and assigned randomly to one of six treatments (four replicate pens per treatment) providing 0 (control), 10, 20, 30, 120, or 240 mg of supplemental Mn/kg of DM from MnSO4. Steers were fed a corn silage-based growing diet for 84 d, and then switched to a corn-based finishing diet for an average of 112 d. The control growing diet analyzed 29 mg of Mn/kg of DM, whereas the control finishing diet analyzed 8 mg of Mn/kg of DM. Jugular blood samples were obtained on d 56 of the growing and finishing phase for plasma Mn and glucose analysis. Final BW, DMI, ADG, and G:F did not differ (P = 0.38 to P = 0.98) across treatments during growing and finishing phases. Plasma Mn concentrations were not affected by treatment; however, liver and LM Mn at slaughter increased linearly (P = 0.02 and 0.002, respectively) with increasing dietary Mn. Plasma glucose concentrations did not differ (P = 0.90) among treatments. Serum nonesterified fatty acid concentrations tended (P = 0.10) to decrease linearly with increasing dietary Mn on d 56 of the finishing phase. Longissimus muscle lipid concentration was affected quadratically (P = 0.08) by dietary Mn. Muscle lipid seemed to increase slightly when steers were fed 30 or 120 mg of Mn/kg of DM, but decreased with the addition of 240 mg of Mn/kg of DM. Carcass characteristics were not affected by dietary Mn. Manganese concentrations of 29 and 8 mg/kg of DM in the growing and finishing diets, respectively, were adequate for maximizing performance of growing and finishing steers in this experiment. Supplementing physiological or pharmacological concentrations of Mn affected lipid metabolism; however, this did not result in altered carcass characteristics.  相似文献   

A COMPLEMENT-FIXATION TEST FOR ENZOOTIC PNEUMONIA OF PIGS USING A COMPLEMENT DILUTION METHOD   总被引：1，自引：0，他引：1  

J. R. Etheridge  L. C. Lloyd 《Australian veterinary journal》1980,56(3):101-105

Complement-fixing antibody to Mycoplasma hyopneumoniae in the serums of pigs experimentally infected with enzootic pneumonia was demonstrated by comparing the haemolytic titre of guinea-pig complement titrated in the presence of heated test serum, M. hyopneumoniae antigen and unheated normal pig serum with the titre obtained when the antigen was omitted. The haemolytic titres against sensitised sheep erythrocytes were determined after a fixation period of 16 to 18 hours at 5°C. When serums, collected at intervals of 3 to 7 days, from 43 pigs exposed to pigs experimentally infected with enzootic pneumonia were tested, 4.6 or more complement units were first fixed 14 to 44 (mean 23.4) days after contact began. Serums collected subsequently fixed from 4.6 to more than 31 complement units. This positive reaction usually persisted until the pigs were killed 4 to 35 weeks after contact began. Thirty-three had gross enzootic pneumonia lesions and 9 had lung lesions detected microscopically. Serum antibody was not detected in 73 weaned pigs aged 7 weeks in a pneumonia-free herd but serums from 9 of 15 unweaned piglets aged 9 to 14 days in the same herd, fixed between 3 and 7 complement units.  相似文献   

Entry of pesticides into the plant symplast as measured by their loss from an ambient solution     

Carol A. Peterson  Lloyd V. Edgington 《Pest management science》1976,7(5):483-491

A method was developed to determine the extent of penetration of substances into the plant symplast. The known apoplastic dye trisodium 3-hydroxy-5,8,10-pyrenetri-sulphonate (PTS) and various systemic pesticides were studied using potato tuber tissue. The dye penetrated only 5% of the volume of living tissue while those pesticides which display an apoplastic pattern of transport in plants penetrated the entire tissue volume. The pesticides diffused freely out of the tissue when it was transferred to fresh medium. It is proposed that the term euapoplastic be used to describe chemicals that behave like the dye, and that the term pseudoapoplastic be used to describe chemicals that behave like atrazine, carbendazim, carboxin and diuron. 2,4-D, which displays a symplastic transport pattern in the plant, was concentrated by the tissue and did not diffuse out freely. It appears that the property which allows a pesticide to be transported in the symplast is not its ability to penetrate the plasmalemma but rather its ability to be retained by the symplast after entry.  相似文献   

In vitro markers to differentiate an avirulent from a virulent strain of aujeszky's disease virus     

G. Lloyd  A. Baskerville 《Veterinary microbiology》1978,3(1):65-70

The susceptibility of the virulent NIA-2 and avirulent Bartha strains of Aujeszky's disease virus to various physical and chemical methods of inactivation was investigated. Both strains were highly sensitive to UV radiation and to various combinations of trypsin concentration and temperature. The Bartha strain was the more thermostable and pH-sensitive.  相似文献   

Ulceration in the proximal portion of the urethra as a cause of hematuria in horses: four cases (1978-1985)     

K C Lloyd  J D Wheat  A M Ryan  M Matthews 《Journal of the American Veterinary Medical Association》1989,194(9):1324-1326

Sudden onset of hematuria was associated with mucosal ulceration of the proximal portion of the urethra in 1 stallion and 3 geldings. Hematuria was observed characteristically and consistently at the end of urination. Mucosal ulceration was identified endoscopically in the proximal portion of the urethra at the level of the ischial arch. Biopsy of an ulcerated area of the proximal urethra in one gelding revealed transitional cell carcinoma. Treatment regimens varied from systemic antimicrobial and/or vasoactive therapy to diversion of urinary flow via a temporary perineal urethrostomy. Hematuria resolved in 14 to 24 days (average, 20 days) after treatment was begun, except in one gelding that died of undetermined causes during an initial examination. In the 3 remaining horses, hematuria had not recurred for up to 9 years (average, 1 year).  相似文献   

Population sizes and frequency of staphylococci at mucocutaneous sites on healthy dogs.     

R P Allaker  D H Lloyd  R M Bailey 《The Veterinary record》1992,130(14):303-304

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Development of a computerized systems model for health management decision support in growing hogs     

James W. Lloyd  Stephen B. Harsh  John B. Kaneene  Gerald D. Schwab  Brad J. Thacker  Andrew J. Thulin 《Preventive veterinary medicine》1994,19(3-4):249-265

A study was designed to provide decision support for health management in growing hogs. A dynamic, stochastic systems model for a confinement, continuous production hog growing enterprise (including nursery, grower and finisher phases) was developed to simulate the economic effects of disease, available floor space and feed additives using farm- specific data. Modeling techniques included: discrete and distributed (continuous) delays; triangular probability density functions; autocorrelation; table look-up functions; an alpha-beta tracker; non-linear, constrained optimization. The model was designed to be initialized with the system's current status, using an accompanying production/financial database to achieve individual-farm specificity. Initialization of rate variables required ‘reverse optimization’ of historical system performance. Model predictions are based on an adjustment approach, where changes in current performance are dictated by changes in disease rates, available floor space and feed additive use. These effects vary randomly, but are autocorrelated between production phases, between similar diseases and over time.  相似文献