Extensive epidermal naevus in a foal     

MP Ruppin  MM Dennis  CL Smith  LJ Vogelnest 《Australian veterinary journal》2013,91(10):407-410

  相似文献   

Comparison of Synthetic Oviductal Fluid and G1/G2 Medium under Low‐1 Oxygen Atmosphere on Embryo Production and Pregnancy Rates in Nelore (Bos indicus) Cattle     

BV Sanches  JHF Pontes  AC Basso  CR Ferreira  F Perecin  MM Seneda 《Reproduction in domestic animals》2013,48(1):e7-e9

In this work, we evaluated whether embryo development and pregnancy rates would be affected by culturing bovine Bos indicus embryos in Synthetic Oviductal Fluid with amino acids (SOFaa) or G1/G2 sequential medium under a low‐oxygen atmosphere. Using Ovum Pick Up, we obtained 1,538 oocytes, divided into G1/G2 (n = 783) and SOFaa (n = 755). No difference was observed for blastocyst development among the groups (27.8% ± 14.6 and 34.9% ± 20.0 for G1/G2 and SOFaa respectively, p > 0.05). Transferring the embryos (n = 450) from both groups to recipients resulted in similar pregnancy rates for the G1/G2 (38.4% n = 78/203) compared to the SOFaa (39.7% n = 98/247). Our findings confirm that Bos indicus embryos cultured in SOFaa and G1/G2 under low‐oxygen atmosphere have similar in vitro (blastocyst rate) and in vivo (pregnancy rate) developmental capacity. However, embryos cultured in G1/G2 medium have higher cleavage than those cultured in SOFaa medium.  相似文献   

Transcription Profile of Candidate Genes for the Acquisition of Competence During Oocyte Growth in Cattle     

IR Bessa  RC Nishimura  MM Franco  MAN Dode 《Reproduction in domestic animals》2013,48(5):781-789

  相似文献   

Near-Infrared Spectroscopy Coupled with Chemometrics Tools: A Rapid and Non-Destructive Alternative on Soil Evaluation     

Jéssica Bassetto Carra  Marciéli Fabris  Jeferson Dieckow  Osmar Rodrigues Brito  Pedro Rodolfo Siqueira Vendrame 《Communications in Soil Science and Plant Analysis》2019,50(4):421-434

Near-infrared (NIR) spectroscopy is a rapid, non-destructive and accurate technique for analyzing a wide variety of samples, thus, the growing interest of using this technique in soil science. The objective of this study was to evaluate the potential of NIR spectroscopy to predict organic carbon (OC), total nitrogen (TN), available phosphorus (P) and available potassium (K) in the soil. NIR spectra from 20 cm³ of soil samples were acquired on the range of 750 to 2500 nm in diffuse reflectance mode, resolution of 16 cm^?1 and 64 scans. Eight models of calibration/validation were constructed. Calibration and validation models showed that the predictive potential of NIR varied with the specific soil property (OC, TN, P and K) under evaluation and according to the methodology employed in the model construction (cross-validation or test set). Good prediction models were obtained for OC and TN content based on the statistical parameters. Test set methodology was able to predict soil OC, TN, P, and K better than cross-validation methodology.  相似文献   

Amphibian conservation: Are we on the right track?     

Daniel Brito 《Biological conservation》2008,141(11):2912-2917

Amphibian declines and extinctions are a worldwide concern. Conservation priorities for amphibians should target threatened taxa (taxonomic targets) and regions with high levels of species endemism (geographical targets). Does published research on amphibian conservation reflect the global taxonomic and geographic priorities? I surveyed six years (2000-2005) of 10 conservation and herpetological journals (Amphibia-Reptilia, Animal Conservation, Applied Herpetology, Biodiversity and Conservation, Biological Conservation, Conservation Biology, Copeia, Herpetologica, Journal of Herpetology and Oryx), and analyzed all articles on amphibians. Attention indexes were calculated for orders, threatened species and biogeographic realms. I also examined how well research from tropical developing nations (with high levels of richness and endemism) are represented in the international literature. Attention indexes results show that the most studied amphibian order is Caudata, whereas Gymnophiona is the least studied one. The same trend is observed for threatened species, with threatened Caudata species receiving proportionally more attention than threatened Anura and Gymnophiona. The biogeographic realms that receive most attention by amphibian conservationists are: Oceania, Nearctic and Palearctic. However, the Neotropical, Afrotropical and Indomalayan are the regions with higher species diversity. Forty-one countries contributed articles, but the majority of amphibian conservation research is conducted by North American and western European researchers. There is urgent need for capacity building in tropical developing nations. Amphibians are more threatened and are declining more rapidly than either birds or mammals. However, amphibian conservation is still misplacing its focus in lower-biodiversity regions and non-threatened species. If such trends are not changed, the consequences for the persistence of amphibians worldwide may be dire.  相似文献   

Identification of coagulase-negative staphylococci from bovine mastitis using RFLP-PCR of the groEL gene     

Santos OC  Barros EM  Brito MA  Bastos Mdo C  Dos Santos KR  Giambiagi-Demarval M 《Veterinary microbiology》2008,130(1-2):134-140

Coagulase-negative staphylococci (CNS) have become the predominant pathogens causing bovine mastitis in many countries. CNS infections are associated with damage to milk secretory tissue of the mammary gland by increased connective tissue stroma, moderate increases of somatic cells count in milk and significant production decreases. These consequences impose serious economic losses for the farmers and the dairy industry. Routine veterinary laboratories do not usually identify CNS at the species level. Thereby, the aims of this study were to identify the most common staphylococcal pathogens involved in bovine mastitis using PCR-restriction fragment length polymorphism (RFLP) analysis of a partial groEL gene sequence and to compare our results with the identification carried out by the conventional method. A total of 54 isolates of Staphylococcus, involved in bovine mastitis, were analyzed by this method. The size and number of the fragments obtained by either AluI or HindIII/PvuII digestions made possible to form clear patterns differentiating, among the isolates, 11 of the most common species of animal staphylococcal pathogens. Most of the isolates clustered together with the reference strain of Staphylococcus chromogenes (28) and the type strain of Staphylococcus epidermidis (8). Besides, some isolates clustered together with the type strain of Staphylococcus aureus (5). All patterns were confirmed by the conventional biochemical method, showing concordant results. Thus, the PCR-RFLP of the groEL gene constitutes a reliable and reproducible molecular method for identification of CNS species responsible for bovine mastitis.  相似文献   

Risk of hemolytic anemia with intravenous administration of famotidine to hospitalized cats     

de Brito Galvao JF  Trepanier LA 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2008,22(2):325-329

BACKGROUND: Famotidine administered IV has been associated anecdotally with hemolysis in cats, and some veterinarians recommend using injectable famotidine only by the subcutaneous (SC) route for cats. However, the actual risk of such a reaction is not known. HYPOTHESIS: We hypothesized that famotidine, when given IV slowly, would not be associated with a clinically significant drop in packed cell volume (PCV) in hospitalized cats. ANIMALS: One hundred and forty-two hospitalized cats. METHODS: A retrospective medical record review was performed for hospitalized cats prescribed famotidine IV (n = 56), famotidine SC (n = 48), or no famotidine (n = 38) at a veterinary medical teaching hospital over the period from January 2004 through December 2006. RESULTS: Baseline signalment, observation times, and famotidine dosage (in treated cats) were similar among groups. Median baseline PCVs were significantly lower in the IV (31.5%) and SC (32.0%) groups compared with the control group (35.0%; P= .04). The median percent drop in PCV (3-4%), however, was no different in cats that received famotidine by either route compared with the control group (P= .90), and no cats in either famotidine group were observed to have any clinical signs of hemolysis. CONCLUSIONS AND CLINICAL IMPORTANCE: We conclude from this retrospective study that famotidine IV was given to 56 hospitalized cats without evidence of hemolysis, and that the IV route appeared safe when famotidine was administered over 5 minutes. We could not document a safety advantage of SC versus IV administration in this group of cats.  相似文献   

Squamous cell carcinoma with hepatic metastasis in a saltwater crocodile (Crocodylus porosus)          下载免费PDF全文

AG Hill  MM Dennis  M Pyne 《Australian veterinary journal》2016,94(3):83-86

  相似文献   

Effect of the addition of Chaetoceros calcitrans,Navicula sp. and Phaeodactylum tricornutum (diatoms) on phytoplankton composition and growth of Litopenaeus vannamei (Boone) postlarvae reared in a biofloc system          下载免费PDF全文

Yllana Ferreira Marinho  Luis Otavio Brito  Clarissa Vilela Figueiredo da Silva Campos  William Severi  Humber Agrelli Andrade  Alfredo Olivera Galvez 《Aquaculture Research》2017,48(8):4155-4164

The aim of this study was to evaluate the effect of the addition of Chaetoceros calcitrans, Navicula sp. and Phaeodactylum tricornutum (diatoms) on phytoplankton composition and the growth of Litopenaeus vannamei postlarvae reared in a biofloc system . Four treatments were used: BFT (biofloc system without feed and no addition of diatoms); BFT‐F (biofloc system with feed and no addition of diatoms); BFT‐D (biofloc system with the addition of diatoms and no feed); and BFT‐FD (biofloc system with the addition of feed and diatoms), all in triplicate. The shrimp (16 ± 0.02 mg) were stocked at 2500 postlarvae m^?3 and fed a commercial feed. Diatoms were added on the 1st, 5th, 10th and 15th day at a density of 5 × 10⁴ cells mL^?1 for each species. No significant differences (P > 0.05) between treatments were observed for gross primary production, net ecosystem production and water column respiration rate. However, significant differences (P < 0.05) were observed for nitrite, orthophosphate, alkalinity, final weight, weight gain, yield, feed conversion ratio (FCR), phytoplankton and cyanobacteria composition. The BFT‐FD treatment had better performance parameters for final weight (270 mg), weight gain (254 mg), yield (0.67 Kg m^?3) and FCR (0.61), indicating the benefits of the diatoms C. calcitrans, Navicula sp. and P. tricornutum for decreasing cyanobacteria and improving growth of L. vannamei postlarvae reared in biofloc systems.  相似文献   

Effects of biofloc technology on reproduction and ovarian recrudescence in Nile tilapia          下载免费PDF全文

Érika Ramos de Alvarenga  Suellen Cristina Moreira de Sales  Túlio Soares de Brito  Cláudia Regina Santos  Rebeca Dias Serafim Corrêa  Gabriel Francisco de Oliveira Alves  Ludson Guimarães Manduca  Eduardo Maldonado Turra 《Aquaculture Research》2017,48(12):5965-5972

The objectives of this study were to evaluate the reproductive cycle, morphological changes of ovary and mobilization of energy reserves in Nile tilapia reared with biofloc technology (BFT). In general, the growth and reproductive performance were highly similar between BFT and Control system (clear water). Difference between the systems was found in the hepatosomatic index (using mixed‐effects models), which suggested that BFT can alter the energy mobilization in the post‐spawning period. The absolute and relative fecundity, fertilization rate, number of larvae produced per female, gonadosomatic index, proportion of oogenesis cells, number of post‐ovulatory and atretic follicles were similar between the two systems. We also did not detect a reduction in the reproductive cycle length in Nile tilapia reared in BFT. Because there was no evidence of the negative effects of BFT on Nile tilapia reproduction, we concluded that BFT might be used for breeder stocking of this species.  相似文献