Elevated temperature affects growth and hemato‐biochemical parameters,inducing morphological abnormalities of erythrocytes in Nile tilapia Oreochromis niloticus     

SM Majharul Islam  Rabaya Sultana  Mohammad Imran  Mst. Fatema Tuj Jannat  Mohammad Ashaf‐Ud‐Doulah  Md. Fazle Rohani  Christopher Brown  Md. Shahjahan 《Aquaculture Research》2020,51(10):4361-4371

Temperature is considered as an important environmental factor, and the increasing water temperature resulting from global warming is a great concern. The present study was conducted to examine the effects of elevated water temperature on growth, hemato‐biochemical parameters in Nile tilapia, Oreochromis niloticus acclimatized to three temperatures (31°C, 34°C and 37°C) for 60 days. Additionally, erythrocytic cellular abnormalities (ECA) and erythrocytic nuclear abnormalities (ENA) tests were assayed using peripheral erythrocytes after exposure to the three temperatures. Fish were sacrificed on days 7, 15, 30 and 60 of exposure. Growth performances viz., weight gain, % weight gain and specific growth rate (SGR) showed decreasing tendency at 34°C but significantly declined at 37°C compared to 31°C. The abundance of haemoglobin (Hb) and red blood cells (RBCs) significantly decreased in response to temperature increases, while white blood cells (WBCs) displayed the opposite response. At days 7 and 15, blood glucose levels significantly increased in response to the temperature increase, while at days 30 and 60 glucose declined. Frequencies of ECA and ENA were significantly enhanced at the highest temperature throughout the experimental period. Dissolved oxygen decreased and free CO₂ increased significantly with increasing temperature throughout the study period. The present study revealed that temperatures higher than 34°C may be hazardous to O. niloticus.  相似文献   

Adsorption of systemic pesticides on ground stems and in the apoplastic pathway of stems,as related to lignification and lipophilicity of the pesticides     

Eran Barak  Benjamin Jacoby  Amos Dinoor 《Pesticide biochemistry and physiology》1983,20(2):194-202

The adsorption of five systemic fungicides (carbendazim, triadimefon, nuarimol, triarimol, and fenarimol) and one herbicide (fluometuron) on ground stems and in the apoplastic pathway of excised pepper, cotton, and bean stems was studied. Adsorption on ground and water extracted stems, as well as retention in the apoplast of excised stems, increased with the 1-octanol/water partition coefficients of the pesticides. Methylation of ground stems increased their adsorption capacity (carbendazim excluded), while extraction with organic solvents did not affect it. Woody stems adsorbed more of the pesticides than herbaceous ones. Binding of pesticides in the apoplastic pathway of stems seems to be related to their degree of lignification and to the lipophilicity of the pesticides.  相似文献   

Resident forum abstracts
EVALUATION OF THROMBOELASTOGRAPHY (TEG) IN NORMAL CATS     

AJ Alwood  AB Downend  KA Slensky  JA Fox  SA Simpson  SM Donahue  LS Waddell  CM Otto 《Journal of Veterinary Emergency and Critical Care》2004,14(Z1):S1-S17

Objective: To establish normal parameters of thromboelastography (TEG) in healthy adult cats. Background: Thromboelastography (TEG) is an in vitro test of coagulation that has been shown to be useful in humans, dogs and select species to identify and quantify alterations of hemostasis (e.g., hypercoagulable and hypocoagulable states). It has also been demonstrated to be useful in monitoring effects of anticoagulant therapies. This test has not been evaluated in cats. Methods: Blood was collected from 25 clinically normal cats by venipuncture using a 21 gauge×3 1/2 inch butterfly catheter and syringe for medial saphenous or jugular venipuncture. A single 1.8 mL sample in 3.8% Sodium Citrate (9:1) was collected from each cat. Recalcified whole blood was analyzed 30 minutes following collection with the TEG® 5000 analyzer (Haemoscope, Niles, IL). Analysis temperature was 37.6°C. TEG parameters recorded included: R‐value (represents initial fibrin formation), K (time from R to standard fixed measure of clot firmness which represents contributions of platelets and fibrinogen), maximum amplitude (MA; represents absolute clot strength), and alpha angle (α; the slope of TEG tracing which represents rate of clot formation). The coagulation index (CI) was derived from the formula generated for humans to provide an overall assessment of whether the sample was hyper‐ or hypocoagulable. Results: Values for the 25 normal cat samples are reported as mean ±2 standard deviations. R=2.97; 1.23–4.72; K=1.54, 0.38–2.71; α=70.70, 57.76–83.65; MA=58.50, 45.26–71.74 and CI=2.27, 0.07–4.46. Compared to historical information obtained on normal dogs, cats have significantly shorter R and K and larger α, MA and CI. Conclusions: TEG does have reproducible performance when used to evaluate coagulation status in normal cats. Compared to dogs, normal cats favor a hypercoagulable state. Species‐specific normal values are necessary for interpretation of TEG results. This test bears potential value for use in future experimental and clinical work to investigate hemostasis in cats receiving anticoagulant therapies or in cats suffering from diseases such as cardiomyopathy which are thought to be associated with altered coagulation status.  相似文献   

Mastermind the future of veterinary medicine     

Jacoby DA 《Journal of the American Veterinary Medical Association》1999,215(11):1584

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NOTE ON THE PERMANENCE OF THE RUTHERFURD PHOTOGRAPHIC MEASURES     

Jacoby H 《Science (New York, N.Y.)》1896,3(66):505-507

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JOHN KROM REES     

Jacoby H 《Science (New York, N.Y.)》1907,25(638):475-477

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Social behaviour in sharks and rays: analysis,patterns and implications for conservation     

David M P Jacoby  Darren P Croft  David W Sims 《Fish and Fisheries》2012,13(4):399-417

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Abstracts of papers presented at the Meeting of the Phytopathological Society of Israel     

A. Nachmias  I. Barash  Z. Solel  G. A. Strobel  Adina Breiman  Y. Cohen  I. Chet  D. Timar  Y. Henis  D. Havkin  J. Katan  D. Prusky  A. Dinoor  B. Jacoby  R. Reuveni  M. Perl  J. Rotem  Rivka Barkai-Golan  Naomi Temkin-Gorodeiski  S. Warshawski  Mina Schiffmann-Nadel  S. Marco  D. Levy 《Phytoparasitica》1976,4(1):65-69

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Seroprevalence of Coxiella burnetii antibodies in wild deer populations in eastern Australia     

L Voss  J Huaman  C Pacioni  A Tolpinrud  K Helbig  TG Carvalho  SM Firestone 《Australian veterinary journal》2023,101(3):106-114

Coxiella burnetii causes significant reproduction losses in livestock and the disease Q fever in humans. Transmission of C. burnetii is facilitated by the stability of the bacterium in the environment and the susceptibility of a variety of host species to infection. Consequently, inter-species transmission occurs frequently through either direct or indirect contact. Wildlife may represent reservoirs of C. burnetii and could therefore be a source of infection for domestic animals. Understanding the prevalence of C. burnetii infections at the wildlife-livestock interface is important for disease control. This study aimed to investigate the extent of C. burnetii exposure in wild deer in eastern Australia. Serum samples were obtained from 413 wild deer from seven regions in four eastern Australian states from 2017 to 2020. Antibodies were detected using a commercial Q fever antibody kit validated for ruminants. Seroprevalence of C. burnetii antibodies in deer was determined and true prevalence estimated, for each region. The overall seroprevalence of C. burnetii antibodies in wild deer was 3.4% (14 seropositive of 413 deer sampled) with true prevalence estimated to be 4.3% (95% credible interval: 0.6%, 10.9%). Seropositive deer were identified only in Queensland (7/108 seropositive) and northern New South Wales (7/120 seropositive). This geospatial distribution is consistent with seropositivity in other animal species and indicative of the level of C. burnetii in the environment. The low seroprevalence suggests that wild deer are unlikely to be a major reservoir species for C. burnetii in eastern Australia but may still be implicated in inter-species transmission cycles.  相似文献   

Findings in cattle consigned to Victorian knackeries between 2009 and 2018     

JG Gibney  SM Pefanis  MJ Jeffers  RJ Suter  JC Hunnam 《Australian veterinary journal》2020,98(8):396-404

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