Artificial insemination in tench, Tinca tinca L.     

O. LINHART  P. KVASNI&#;KA 《Aquaculture Research》1992,23(2):183-188

Abstract. The sperm of tench, Tinca tinca L., is characterized by a milky colour and consistency, and is of very low density. After collecting the sperm, motion of spermatozoa was recorded even without water activation. A better motility value (value 4·36 on average) was observed in spermatozoa collected in immobilizing solution (collecting medium) and stored for 3h, when compared with spermatozoa without collecting medium. Average total and relative numbers of spermatozoa were 12·16 × 10⁹ per male and 18·50 × 10⁹ per kg of body weight, respectively. When testing the effect of activating solution in artificial propagation of tench, the highest fertilization rates (81·3 and 85% in two cases) were found for NaCl solution with an osmotic concentration of 34 or 69 mOsmol and for fresh water, respectively. The fertility rate was reduced significantly ( P < 0·01) by any increase above 105 mOsmol in NaCl concentration in the activating solution. In the tests of optimal method of artificial fertilization, the highest hatching rate of sac fry (71·35%) was found in sperm collected into immobilizing solution. The application of immobilizing solution significantly increased the number of sac fry at the levels P < 0·1 and P < 0·01, if compared with intact sperm stored for 3 h and fresh sperm, respectively.  相似文献   

Pigeon Health and Disease     

KA Doyle  HMcL Gordon 《Australian veterinary journal》1993,70(7):278-278

  相似文献   

4 THE EFFECTS OF EXERCISE AND INJURY ON CHONDROITIN SULFATE AND KERATAN SULFATE CONTENT IN EQUINE SYNOVIAL FLUID.     

MP  Brown  AHK Plaas  JD Sandy  JA Hernandez  KA Merritt  . 《Veterinary surgery : VS》2003,32(6):599-599

  相似文献   

Manual of Anaesthesia for Small Animal Practice,     

KA Brock 《Australian veterinary journal》1992,69(12):300-300

  相似文献   

Phylogenetic characterisation of bluetongue viruses from naturally-infected insects, cattle and sheep in Australia   总被引：1，自引：0，他引：1  

KA McCOLL  AR GOULD  LI PRITCHARD  L MEL VILLE†  G. BELLIS† 《Australian veterinary journal》1994,71(4):102-105

SUMMARY The polymerase chain reaction was used to detect the presence of blue-tongue virus (BTV) in a number of clinical and insect samples collected in the Northern Territory of Australia. Sequence analyses of the amplified BTV genes differentiated endemic Australian and exotic viruses. Two potential exotic BTV were detected as a result of PCR analyses of blood from sentinel animals and of the insect vector, Culicoides wadai. The detection of BTV in C wadai was the first direct demonstration of the presence of BTV in this potential vector. This new technology can significantly reduce the time taken for a diagnosis from a clinical sample and increase the amount of useful information obtained on a BTV isolate by using rapid sequencing techniques. Sequence data were used to differentiate between BTV20 isolated in 1975 and two isolates of the same serotype, isolated in 1992, and indicated that the latter were probably a recent incursion into Australia from Indonesia due to their greater VP3 sequence homology to the BTV9 (Java) than to Australian BTV isolates.  相似文献   

Role of genetically engineered animals in future food production     

KA McColl  B Clarke  TJ Doran 《Australian veterinary journal》2013,91(3):113-117

Genetically engineered (GE) animals are likely to have an important role in the future in meeting the food demand of a burgeoning global population. There have already been many notable achievements using this technology in livestock, poultry and aquatic species. In particular, the use of RNA interference (RNAi) to produce virus‐resistant animals is a rapidly‐developing area of research. However, despite the promise of this technology, very few GE animals have been commercialised. This review aims to provide information so that veterinarians and animal health scientists are better able to participate in the debate on GE animals.  相似文献   

An outbreak of severe tracheobronchitis in racing greyhounds in New Zealand     

KA Potter  C Morley  D Angove  AC Johnstone 《New Zealand veterinary journal》2013,61(1)

  相似文献   

Heat stress as a manageable risk factor to mitigate pneumonia in lambs     

H Black  MR Alley  KA Goodwin-Ray 《New Zealand veterinary journal》2013,61(1):91-92

Abstract

Extract

The paper by Goodwin et al (2004 Goodwin, KA, Jackson, R, Brown, C, Davies, PR, Morris, RS and Perkins, NR. 2004. Pneumonic lesions in lambs in New Zealand: patterns of prevalence and effects on production. New Zealand Veterinary Journal, 52: 175–9. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]) which appeared in the August 2004 issue of the New Zealand Veterinary Journal highlighted the prevalence and costs to the sheep industry of pneumonia in lambs. The costs are considerable, and the article begs the question, “what can sheep farmers do to reduce the effects of pneumonia in lambs?”  相似文献   

Hypoventilation,cardiac dysrhythmia,and cardiac arrest following acute Brunfelsia species (Yesterday,today, tomorrow) intoxication in a dog     

JD Crowley  KA Thomas  SL Donahoe  G Child  MC Hickey  ET Mooney 《Australian veterinary journal》2019,97(6):202-207

  相似文献   

The influence of diel period on fish assemblage in the unstructured littoral of reservoirs     

M. ŘÍHA  J. KUBEČKA  M. PRCHALOVÁ  T. MRKVIČKA  M. ČECH  V. DRAŠTÍK  J. FROUZOVÁ  E. HOHAUSOVÁ  T. JŮZA  M. KRATOCHVÍL  J. PETERKA  M. TUŠER  M. VAŠEK 《Fisheries Management and Ecology》2011,18(4):339-347

Abstract Diel changes in littoral fish assemblage were studied in four reservoirs in the Czech Republic (Central Europe). The sampling was performed by beach seining in an unstructured littoral zone. Perch, Perca fluviatilis L., roach, Rutilus rutilus (L.), bream, Abramis brama (L.), carp, Cyprinus carpio L., ruffe, Gymnocephalus cernua (L.), pikeperch, Sander lucioperca (L.), eel, Anguilla anguilla (L.) and A. brama × R. rutilus hybrids exhibited higher densities at night. Only bleak, Alburnus alburnus (L.) exhibited higher densities during the day. The number of species was higher in night hauls, and mean body size of roach and bleak was also higher at night. Diel changes in fish densities resulted in the change in species composition between day and night. The study has implication for the sampling design to assess littoral fish assemblages using beach seine netting and recommends night sampling for a representative assessment or sampling during both diel periods for a robust assessment.  相似文献