Spotlight counts for assessing abundance of rabbits (Oryctolagus cuniculus L.)

1999 ◽  
Vol 26 (5) ◽  
pp. 609 ◽  
Author(s):  
David J. Fletcher ◽  
Henrik Moller ◽  
B. Kay Clapperton
Keyword(s):  
New Zealand ◽  
Oryctolagus Cuniculus ◽  
Heavy Rain ◽  
Mackenzie Basin ◽  
Large Numbers ◽  
Before And After ◽  
Order Of Magnitude ◽  
Kill Rate ◽  
Unexplained Variance ◽  
New Zealand Rabbits

We determined the precision of spotlight counts of rabbits (Oryctolagus cuniculus L.) and their accuracy as estimates of density, by making counts from a motorcycle along 17 1-km transects in the Mackenzie Basin, New Zealand. Rabbits were poisoned and density per 1-ha quadrat was measured. Precision of spotlight counts would be between 5–28% and 6–39%, using impracticably large numbers of counts, even allowing for the effects of snow and heavy rain, observer bias and number of runs per night. Spatial and unexplained variance would result in even less precise counts using 25 transects and 1–5 nights. Actual rabbit densities explained only 41% of the variance in spotlight counts. Confidence intervals of absolute rabbit densities are extremely large, especially when observed counts are high. At best, spotlight counts could be used to detect differences in actual rabbit abundance spanning an order of magnitude or more. Observed reduction in spotlight counts is likely to underestimate reduction in actual density because the spotlight count index ‘saturates’ at high rabbit density. However, spotlight counts along fixed transects before and after a control operation can be used to estimate percentage kill with acceptable precision if the kill rate is at least 80%.

scholarly journals Topography, irrigation, and histology of the thyroid gland of New Zealand rabbits (Oryctolagus cuniculus Linnaeus, 1758)

2019 ◽  
Vol 6 (3) ◽  
pp. 225-229
Author(s):  
Ana Paula Silva Borges ◽  
Lorena Tannus Menezes ◽  
Lázaro Antonio dos Santos ◽  
Gustavo Cavinato Herrera ◽  
Gustavo Lucio França ◽  
...  
Keyword(s):  
New Zealand ◽  
Thyroid Gland ◽  
Oryctolagus Cuniculus ◽  
New Zealand Rabbits

scholarly journals HEPATO-NEPHROPROTECTIVE ACTIVITY OF NIGELLA SATIVA OIL ON PARACETAMOL-INDUCED NEW ZEALAND RABBITS (ORYCTOLAGUS CUNICULUS)

2017 ◽  
Vol 9 (10) ◽  
pp. 225
Author(s):  
Nadhira M. Dinar ◽  
Sheila Pratiwi ◽  
Rain Kihara ◽  
Nadia G. Paramita ◽  
Nazilla R. Fathurrahman ◽  
...  
Keyword(s):  
Body Weight ◽  
New Zealand ◽  
Oryctolagus Cuniculus ◽  
Nigella Sativa ◽  
Treated Group ◽  
Nigella Sativa Oil ◽  
Oral Group ◽  
Nephroprotective Activity ◽  
Per Oral ◽  
New Zealand Rabbits

Objective: The objective of this work was to investigate the hepato-nephroprotective activity of Nigella sativa (Ranunculaceae) oil on paracetamol-induced New Zealand rabbits (Oryctolagus cuniculus).Methods: Hepato-nephroprotective activity of Nigella sativa oil was demonstrated on six groups of paracetamol-induced New Zealand rabbits (Oryctolagus cuniculus) aged 3-4 mo, three in each group (2 males, 1 female). Group I was normal control (water 1.0 ml/kg of body weight per oral), group II was negative control (water 1.0 ml/kg of body weight per oral), group III was positive control (silymarin 100 mg/kg of body weight per oral), group IV-VI were treated with Nigella sativa oil (NSO) dose of 0.5 mg/kg of body weight, 1.0 mg/kg of body weight, and 2.0 mg/kg of body weight per oral, respectively, for 15 d. At the 16th day, rabbits in group II-VI were induced with paracetamol at a dose of 600 mg/kg of body weight per oral. At the 23rd day the animals were measured for their clinical biochemistry parameters and histological examination.Results: Paracetamol administration dose of 600 mg/kg of BW resulted in the elevation of serum glutamic-oxaloacetic transaminase (SGOT), serum glutamic pyruvic transaminase (SGPT), and ureum-N levels of the animals, particularly in group II which was treated only with paracetamol. Normal histology of the liver defines the clear shape of the terminal hepatic venule (THV)/central vein (CV) and sinusoids, whereas that of the kidney defines clear shape of the Bowman capsule and glomerulus shape. Qualitative histological examination of the liver showed that the THV/CV in all groups was normal, however in the paracetamol-treated group, the sinusoids were dilated, necrosis and mass apoptosis were detected. Dilated sinusoids were observed in the silymarin group and in the lower and medium doses of NSO groups. In the highest dose of NSO group the THV/CV and sinusoids were normal, but a local apoptosis and fat degeneration were detected. Qualitative histological examination of the kidney indicated that there was no abnormality of the glomerulus shape, however, mass apoptosis and local necrosis of the kidney were found in the paracetamol-treated group and the silymarin-treated group. The lowest dose of the NSO-treated group showed a normal shape of glomerulus and Bowman capsule, normal apoptosis. No necrosis was observed in the rabbit’s kidney. Higher doses of NSO groups indicated a normal glomerulus shape and Bowman capsule, mass apoptosis and local necrosis.Conclusion: In this study, Nigella sativa oil could maintain the normality of the THV/CV and sinusoids in the liver of paracetamol-induced New Zealand rabbits (Oryctolagus cuniculus). Normal glomerulus shape and Bowman capsule were also confirmed in the kidney of paracetamol-induced animals.

scholarly journals Tear production, intraocular pressure and conjunctival microbiota, cytology and histology of New Zealand rabbits (Oryctolagus cuniculus)

2014 ◽  
Vol 34 (10) ◽  
pp. 1024-1028 ◽  
Author(s):  
Arianne P. Oriá ◽  
Deusdete C. Gomes Junior ◽  
Elane A. Arraes ◽  
Alessandra Estrela-Lima ◽  
Melissa H. Pinna ◽  
...  
Keyword(s):  
New Zealand ◽  
Epithelial Cells ◽  
Staphylococcus Epidermidis ◽  
Oryctolagus Cuniculus ◽  
Bacterial Flora ◽  
Applanation Tonometry ◽  
Tear Production ◽  
Schirmer Tear Test ◽  
Reported Data ◽  
New Zealand Rabbits

The purpose of this study was to establish reference values for selected ophthalmic diagnostic tests in New Zealand rabbits (Oryctolagus cuniculus). A total of 22 adult male rabbits were used. The ophthalmic tests included evaluation of tear production with Schirmer tear test 1(STT1) and Endodontic absorbent paper point tear test (EAPPTT) using two different commercial brand materials. Applanation tonometry, Culture of the conjunctival bacterial flora, , conjunctival cytology and conjunctival histology were also performed. Mean (±SD) for STT1, EAPPTTa, EAPPTTb and IOP was 7.27±2.51mm/min, 12.43±1.69mm/min, 15.24±2.07mm/min, 12.89±2.80mm Hg, respectively. Staphylococcus epidermidis, Staphylococcus sp. and Bacillus sp. were predominant. The cytological evaluation revealed the presence columnar epithelial cells, superficial squamous keratinized cells, lymphocytes, heterophils, red blood cells, mucus and bacteria. The histological analysis revealed a stratified epithelium, characterized by the presence of columnar epithelial cells with a large number of goblet cells. The reported data can be used for therapeutic or experimental purposes.

scholarly journals Laparoscopic-assisted prepubic urethrostomy: experimental model in rabbit

2017 ◽  
Vol 48 (1) ◽  
Author(s):  
Luciana Branquinho Queiroga ◽  
Lucila Maria Almeida Lopes ◽  
Giordano Cabral Gianotti ◽  
Simone Scherer ◽  
Marcelo Meller Alievi ◽  
...  
Keyword(s):  
New Zealand ◽  
Experimental Model ◽  
Oryctolagus Cuniculus ◽  
Simple Technique ◽  
Skills Training ◽  
Loss Of Function ◽  
Proposed Model ◽  
Laparoscopic Assisted ◽  
New Zealand Rabbits

ABSTRACT: The purpose of this study was to develop a laparoscopic-assisted prepubic urethorstomy (PPU) technique using rabbits as an experimental model. Six male New Zealand rabbits (Oryctolagus cuniculus) over six months old and weighing between 3 and 4kg (3.5kg ± 0.4) were used in this study. The animals underwent laparoscopic dissection of the pelvic urethra, which was then exposed for the laparoscopic-assisted urethrostomy procedure. The proposed model for training of laparoscopic-assisted PPU in rabbits was considered effective and feasible. It proved to be a simple technique even for surgeons under basic endosurgery skills training, with possibilities of employing the technique for the treatment of cats with loss of function of the distal urethra.

Description of digital fluoroscopic excretory urography in healthy New Zealand rabbits (Oryctolagus cuniculus)

2018 ◽  
Vol 183 (18) ◽  
pp. 568-568 ◽  
Author(s):  
Raul Altuzarra ◽  
Laura Vilalta ◽  
Jaume Martorell ◽  
Rosa Novellas ◽  
Yvonne Espada
Keyword(s):  
New Zealand ◽  
Urinary Tract ◽  
Urinary Bladder ◽  
Median Time ◽  
Diagnostic Tool ◽  
Oryctolagus Cuniculus ◽  
Abdominal Ultrasound ◽  
Excretory Urography ◽  
Contrast Study ◽  
New Zealand Rabbits

Disorders of the kidneys and urinary tract are relatively common in rabbits. Survey radiographs and abdominal ultrasound have inherent limitations in the evaluation of the urinary tract in this species; because of that, contrast study modalities are a valuable diagnostic tool in rabbits with urinary disorders. The aims of this study were to describe digital fluoroscopic excretory urography (DFEU) and to determine the urogram phases in healthy New Zealand rabbits. The median time of beginning of the nephrographic and pyelographic phases was 10 seconds (IQR: 10–12 seconds) and 1.39 minutes (IQR: 1.27–1.60 minutes). The median time in which the contrast medium was visible in the urinary bladder was 1.58 minutes (IQR: 1.44–1.72 minutes). Results of this study indicate that DFEU provides a good degree of opacification of the kidneys as well as the ureters, and allows the evaluation of the urogram phases. Text not justifed in the proof version

scholarly journals Stereological analysis of the New Zealand rabbits (Oryctolagus cuniculus) placenta

2021 ◽  
Vol 93 (2) ◽  
Author(s):  
CARLA M.F. DE CARVALHO ◽  
LUCIANO C.P.C. LEONEL ◽  
LUCIANA S. SIMÕES ◽  
TAIS H.C. SASAHARA ◽  
DANIELE S. MARTINS ◽  
...  
Keyword(s):  
New Zealand ◽  
Oryctolagus Cuniculus ◽  
Stereological Analysis ◽  
New Zealand Rabbits
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