Interdigital subcutaneous emphysema ('bubble foot') in Crocodylus porosus hatchlings     

JA TURTON  PW LADDS  LF MELVILLE 《Australian veterinary journal》1996,74(5):395-397

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Protective effect of cobalt against apparent liver damage in sheep exposed to toxic annual ryegrass     

SC DAVIES  IH WILLIAMS  CL WHITE  JG ALLEN  JA EDGAR  PA COCKRUM  P. STEWART 《Australian veterinary journal》1993,70(5):186-187

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Observations on the endo- and ectoparasites affecting dogs and cats in Aboriginal communities in the north-west of Western Australia   总被引：1，自引：1，他引：0  

RCA THOMPSON  BP MELONI  RM HOPKINS  P DEPLAZES  JA REYNOLDSON 《Australian veterinary journal》1993,70(7):268-270

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Pilot study of Australian veterinarians and their perceptions and experiences related to online pet health information     

LR Kogan  JA Oxley  SJ Hazel 《Australian veterinary journal》2019,97(1-2):10-13

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Follicle Diameter and Systemic Hormone Interrelationships during Induction of Follicle Collapse with Intrafollicular Prostaglandin E2 and F2α in Mares          下载免费PDF全文

R Martínez‐Boví  J Cuervo‐Arango 《Reproduction in domestic animals》2016,51(2):322-329

The objectives were to determine: (i) whether intrafollicular administration of PGE2 and PGF2α to mares would hasten follicle collapse and (ii) the differences in reproductive hormone characteristics in mares with spontaneous and prostaglandin‐induced follicle collapses. Six mares were followed for two oestrous cycles each: when the mares reached a follicle diameter of 30–35 mm and showed mild‐to‐moderate endometrial oedema, mares were administered a single 0.5 ml dose containing 500 μg PGE2 and 125 μg PGF2α (treatment cycle) or a placebo (0.5 ml of water for injection; control cycle) into the preovulatory follicle (Hour 0). Blood samples were collected, and serial ultrasound examinations were performed until follicle collapse. Treated mares showed follicle collapse significantly earlier (20.0 ± 5.9 h) than the control mares (72.0 ± 10.7 h). The LH, progesterone, total oestrogens and oestradiol concentrations did not differ between groups; however, the progesterone concentration increased more between 48 and 72 h after follicle injection in the treatment compared to the control cycles (P < 0.05). In conclusion, intrafollicular treatment with PGE2 and PGF2α hastened follicle collapse in mares without the simultaneous use of an inductor of ovulation; despite the early induction of follicle collapse, the profiles of LH and oestradiol were not altered. This study provides information on the role of prostaglandins (PGs) in the process of follicle wall rupture and collapse and suggests that this may happen even before the beginning of the sharp rise in circulating LH at the final stage of the ovulatory surge.  相似文献   

Impact of fitting dominance and additive effects on accuracy of genomic prediction of breeding values in layers          下载免费PDF全文

M. Heidaritabar  A. Wolc  J. Arango  J. Zeng  P. Settar  J.E. Fulton  N.P. O'Sullivan  J.W.M. Bastiaansen  R.L. Fernando  D.J. Garrick  J.C.M. Dekkers 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2016,133(5):334-346

Most genomic prediction studies fit only additive effects in models to estimate genomic breeding values (GEBV). However, if dominance genetic effects are an important source of variation for complex traits, accounting for them may improve the accuracy of GEBV. We investigated the effect of fitting dominance and additive effects on the accuracy of GEBV for eight egg production and quality traits in a purebred line of brown layers using pedigree or genomic information (42K single‐nucleotide polymorphism (SNP) panel). Phenotypes were corrected for the effect of hatch date. Additive and dominance genetic variances were estimated using genomic‐based [genomic best linear unbiased prediction (GBLUP)‐REML and BayesC] and pedigree‐based (PBLUP‐REML) methods. Breeding values were predicted using a model that included both additive and dominance effects and a model that included only additive effects. The reference population consisted of approximately 1800 animals hatched between 2004 and 2009, while approximately 300 young animals hatched in 2010 were used for validation. Accuracy of prediction was computed as the correlation between phenotypes and estimated breeding values of the validation animals divided by the square root of the estimate of heritability in the whole population. The proportion of dominance variance to total phenotypic variance ranged from 0.03 to 0.22 with PBLUP‐REML across traits, from 0 to 0.03 with GBLUP‐REML and from 0.01 to 0.05 with BayesC. Accuracies of GEBV ranged from 0.28 to 0.60 across traits. Inclusion of dominance effects did not improve the accuracy of GEBV, and differences in their accuracies between genomic‐based methods were small (0.01–0.05), with GBLUP‐REML yielding higher prediction accuracies than BayesC for egg production, egg colour and yolk weight, while BayesC yielded higher accuracies than GBLUP‐REML for the other traits. In conclusion, fitting dominance effects did not impact accuracy of genomic prediction of breeding values in this population.  相似文献   

Identification of recombination hotspots and quantitative trait loci for recombination rate in layer chickens     

Ziqing Weng  Anna Wolc  Hailin Su  Rohan L.FernANDo  Jack C.M.Dekkers  Jesus Arango  Petek Settar  Janet E.Fulton  Neil P.O'Sullivan  Dorian J.Garrick 《畜牧与生物技术杂志(英文版)》2019,(2)

Background: The frequency of recombination events varies across the genome and between individuals, which may be related to some genomic features. The objective of this study was to assess the frequency of recombination events and to identify QTL(quantitative trait loci) for recombination rate in two purebred layer chicken lines.Methods: A total of 1200 white-egg layers(WL) were genotyped with 580 K SNPs and 5108 brown-egg layers(BL)were genotyped with 42 K SNPs(single nucleotide polymorphisms). Recombination events were identified within half-sib families and both the number of recombination events and the recombination rate was calculated within each0.5 Mb window of the genome. The 10% of windows with the highest recombination rate on each chromosome were considered to be recombination hotspots. A BayesB model was used separately for each line to identify genomic regions associated with the genome-wide number of recombination event per meiosis. Regions that explained more than 0.8% of genetic variance of recombination rate were considered to harbor QTL.Results: Heritability of recombination rate was estimated at 0.17 in WL and 0.16 in BL. On average, 11.3 and 23.2 recombination events were detected per individual across the genome in 1301 and 9292 meioses in the WL and BL,respectively. The estimated recombination rates differed significantly between the lines, which could be due to differences in inbreeding levels, and haplotype structures. Dams had about 5% to 20% higher recombination rates per meiosis than sires in both lines. Recombination rate per 0.5 Mb window had a strong negative correlation with chromosome size and a strong positive correlation with GC content and with CpG island density across the genome in both lines. Different QTL for recombination rate were identified in the two lines. There were 190 and 199 non-overlapping recombination hotspots detected in WL and BL respectively, 28 of which were common to both lines.Conclusions: Differences in the recombination rates, hotspot locations, and QTL regions associated with genomewide recombination were observed between lines, indicating the breed-specific feature of detected recombination events and the control of recombination events is a complex polygenic trait.  相似文献   

Retrospective evaluation of the efficacy of minimally invasive,fluoroscopic‐assisted reduction and stabilisation of unicondylar humeral fractures          下载免费PDF全文

JA Au Yong  DD Lewis  RB Evans  SE Kim  A Pozzi 《Australian veterinary journal》2018,96(8):302-307

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Gallbladder Mucocele: Variables Associated with Outcome and the Utility of Ultrasonography to Identify Gallbladder Rupture in 219 Dogs (2007–2016)          下载免费PDF全文

J.A. Jaffey  A. Graham  E. VanEerde  E. Hostnik  W. Alvarez  J. Arango  C. Jacobs  A.E. DeClue 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2018,32(1):195-200

Background

Gallbladder mucocele (GBM) is an increasingly recognized extrahepatic biliary disease in dogs.

Objectives

To investigate cases of GBM and identify variables associated with survival and the sensitivity and specificity of ultrasonography to identify gallbladder rupture.

Animals

Two hundred and nineteen client‐owned dogs with GBM.

Methods

Multicenter, retrospective study of dogs with GBM, presented from January 2007 to November 2016 to 6 academic veterinary hospitals in the United States. Interrogation of hospital databases identified all cases with the inclusion criteria of a gross and histopathologic diagnosis of GBM after cholecystectomy and intraoperative bacteriologic cultures of at least 1 of the following: gallbladder wall, gallbladder contents, or abdominal effusion.

Results

Two hundred and nineteen dogs fulfilled the inclusion criteria. Dogs with GBM and gallbladder rupture with bile peritonitis at the time of surgery were 2.7 times more likely to die than dogs without gallbladder rupture and bile peritonitis (P = 0.001; 95% confidence interval [CI], 1.50–4.68; n = 41). No significant associations were identified between survival and positive bacteriologic cultures, antibiotic administration, or time (days) from ultrasonographic identification of GBM to the time of surgery. The sensitivity, specificity, positive, and negative likelihood ratios for ultrasonographic identification of gallbladder rupture were 56.1% (95% CI, 39.9–71.2), 91.7% (95% CI, 85.3–95.6), 6.74, and 0.44, respectively.

Conclusion and Clinical Importance

Dogs in our study with GBM and intraoperative evidence of gallbladder rupture and bile peritonitis had a significantly higher risk of death. Additionally, abdominal ultrasonography had low sensitivity for identification of gallbladder rupture.  相似文献   

Evaluating insecticide coverage in almond and pistachio for control of navel orangeworm (Amyelois transitella) (Lepidoptera: Pyralidae)     

Joel P Siegel  Mathew M Strmiska  Franz JA Niederholzer  D Ken Giles  Spenser S Walse 《Pest management science》2019,75(5):1435-1442

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