Disc extrusion in a Rottweiler dog with caudal cervical spondylomyelopathy after failure of intervertebral distraction/stabilisation     

AM MARCHEVSKY  JL RICHARDSON 《Australian veterinary journal》1999,77(5):295-297

A Rottweiler dog was presented with an 8 week history of hindlimb ataxia. Neurological examination localised the lesion to the cervical spinal cord. Myelography demonstrated dynamic compressive lesions at C5-6 and C6-7 consistent with a diagnosis of caudal cervical spondylomyelopathy. Distraction/stabilisation of both discs was performed using interbody polymethyl methacrylate. Both implants subsequently failed leading to extrusion of the remaining dorsal annulus fibrosus of the C5-6 intervertebral disc and nonambulatory tetraparesis. A ventral slot combined with distraction/stabilisation using screws and polymethyl methacrylate was performed and resulted in nearly full neurological recovery.  相似文献   

Arthroscopic surgery in a reticulated giraffe (Giraffa camelopardalis reticulata).     

R M Radcliffe  T A Turner  C H Radcliffe  R W Radcliffe 《Journal of zoo and wildlife medicine》1999,30(3):416-420

An 8-mo-old captive male reticulated giraffe (Giraffa camelopardalis reticulata) developed an acute lameness (grade IV/V) of the right forelimb, with swelling of the metacarpophalangeal joint. A traumatic injury was suspected based on clinical, radiographic, and arthroscopic evaluation. Several abnormalities were identified arthroscopically, including synovitis, cartilage damage, and an osteochondral fragment. Medial collateral ligament damage was also suspected based on radiographic evaluation. Arthroscopy provided a means of diagnosis and treatment of the abnormalities identified. The lameness in this giraffe resolved within 6 wk following arthroscopic surgery.  相似文献   

Noninvasive assessment of nitrate‐induced stress in koi Cyprinus carpio L. by faecal cortisol measurement     

Samuel J. Lupica  John W. Turner Jr 《Aquaculture Research》2010,41(11):1622-1629

This study determined effects of nitrate (NO₃^?)‐induced stress on faecal cortisol levels in koi (Cyprinus carpio). NO₃^? was presented in two formats: (1) bulk increase followed by dilution to assess cortisol response and recovery and (2) bulk increase followed by incremental increases to assess cortisol response limit. Fish were maintained group‐wise in treatment and control aquaria (n=6 per group), and 0.5 g L^?1 NO₃^? (as NaNO₃) was added to the water. Faecal samples were collected daily and blood samples were taken pretreatment and 72‐h posttreatment and were assayed for cortisol via ELISA. NO₃^? increased plasma and faecal cortisol 4.4‐fold and 3.9‐fold respectively. Plasma cortisol was not measured further. After a 74% NO₃^? decrease by dilution, faecal cortisol decreased to baseline within 24 h, and restimulation by NO₃^? (1.0 g L^?1) elevated faecal cortisol to maximal study levels. In a separate experiment, exposure to 0.4 g L^?1 NO₃^? increased faecal cortisol 6.9‐fold. However, three additional 0.4 g L^?1 NO₃^? increments across 9 days did not further increase cortisol. This study demonstrates that faecal cortisol measurement in fish via an ELISA can be useful as an indicator of NO₃^?‐induced stress in the aquatic environment.  相似文献   

A study of the nutritive value of white clover (Trifolium repens L.) in relation to different stages of phenological maturity in the primary growth phase in spring     

Ayres  Nandra  & Turner 《Grass and Forage Science》1998,53(3):250-259

This paper reports the effects of onset of phenological maturity on the nutritive value of white clover ( Trifolium repens L.). The study comprised (i) examination of an extensive data set on nutritive value and (ii) investigation of the constituents of nutritive value, in vivo feeding value, protein degradability and metabolizable protein content of white clover harvested at three stages of maturity (early-flowering, full-flowering, ripe seed stages) during the primary growth phase in spring in Australia. The data set on nutritive value showed a consistent pattern of high nutritive value during cool season months, progressive decline through spring and uniformly lower nutritive value over summer. Results from laboratory determinations, in sacco degradability studies and a digestibility trial on white clover harvested at early-flowering, full-flowering and ripe seed stages were consistent with results from the data set on nutritive value. Onset of maturity during the primary growth phase in spring was accompanied by large changes in nutritive value: neutral-detergent fibre (NDF) increased from 184 to 301 g kg⁻¹ dry matter (DM), nitrogen (N) declined from 36 to 20 g kg⁻¹ DM, in vitro digestibility declined from 0·74 to 0·65 and metabolizable protein content declined from 144 to 67 g kg⁻¹ DM from early-flowering to ripe seed stage. These nutritive value changes were accompanied by a decline of in vivo digestibility at the rate of 0·0032 d⁻¹ and an 0·2 reduction in voluntary intake.  相似文献   

Effects of feeding ensiled kale (Brassica oleracea) on the performance of finishing lambs     

Vipond  Duncan  Turner  Goddyn  & Horgan 《Grass and Forage Science》1998,53(4):346-352

The use of forage brassicas, such as kale, in diets of ruminants is typically constrained by the presence of anti-metabolites that break down in the rumen to cause detrimental effects after absorption including haemolytic anaemia and tissue damage. Ensilage of kale before feeding may provide conditions that favour the degradation of potentially toxic anti-metabolites, thereby improving the nutritive value of the feed. An experiment was conducted with eighty Scottish Blackface housed lambs, in which four levels of kale silage were used to replace grass silage and in which the forage component comprised around 60% of the finishing diet. Productivity of lambs was not affected other than to increase the killing-out percentage of the lambs. Glucosinolate concentrations in kale were markedly reduced by the ensiling process. Haematological parameters, such as packed cell volume, haemoglobin concentration and the presence of Heinz−Ehrlich bodies, were not significantly affected by replacing grass silage with kale silage. Similarly, there were no significant effects arising from the dietary treatments on the blood plasma components, gamma-glutamyl transpeptidase, blood urea nitrogen, tri-iodothyroxine and thyroxine, which are conventional measures of glucosinolate toxicity.
The results indicated that the ensilage of kale reduces its toxicity and hence removes constraints on the maximum inclusion levels in the diet. Also, it was possible to reduce the potential contamination of carcasses with soil by lambs not grazing the crop and thus keeping fleeces clean.  相似文献   

Reproductive dominance of pasture trees in a fragmented tropical forest mosaic   总被引：1，自引：0，他引：1  

PR Aldrich  JL Hamrick 《Science (New York, N.Y.)》1998,281(5373):103-105

Tropical forest fragmentation threatens biodiversity, yet basic information on population responses for major groups such as plants is lacking. Hypervariable genetic markers were used to reconstruct a population-level pedigree in fragmented tropical forest for the tree Symphonia globulifera. Though seedlings occurred only in remnant forest, the pedigree showed that most seedlings had been produced by sequentially fewer adults in pasture, creating a genetic bottleneck. The pedigree also implicated shifts in the foraging of animals that disperse pollen and seed in a secondary constriction of the bottleneck. These results suggest that tropical conservation strategies should anticipate complex, cryptic responses to fragmentation.  相似文献   

Effects of feeding a probiotic blend on live performance of broiler chickens from 0 to 49 days of age     

J. Summers  B. Turner  N. Tillman 《The Journal of Applied Poultry Research》2022,31(3):100273

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