Equilíbrio de cavalos da raça Quarto de Milha participantes da modalidade de três tambores por meio de proporções corporais

Based on the concept that horses have balanced symmetry between its anatomical regions, the aim of this study was to introduce a method of assessing the balance of equines through body proportions. Altogether twelve linear measurements, using metric tape, were measured in 234 horses Quarter Horses for evidence of barrel racing. From these measurements were built nine body proportions, each one given by the ratio of two specific measures, and the effects of sex, weight, age and degree of blood on the balance were evaluated. To check the significance tests we used the F statistic, considering P<0.05. It was found that the linear measurements ML2, ML3 and ML5 were mainly responsible for the disproportionality of the horses evaluated. The effect of sex was significant (P<0.05) for four proportions (R1, R3, R4 and R9) and females were more distant from the concept of balance than males.

Proteinograma sérico e do líquido peritoneal de equinos hígidos e daqueles submetidos à obstrução intestinal experimental

Avaliou-se a resposta de fase aguda através da concentração das proteínas de fase aguda (PFA) no soro sanguíneo e no líquido peritoneal de vinte e um equinos, hígidos e submetidos à obstrução intestinal experimental, distribuídos em quatro grupos: obstrução de duodeno - GD (n=6), íleo - GI (n=6), cólon dorsal esquerdo - GM (n=6) e controle instrumentado - GC (n=3). Foram colhidas amostras de sangue e líquido peritoneal e, após centrifugação e fracionamento, as proteínas de fase aguda foram separadas por eletroforese em SDS-PAGE. Identificaram-se as proteínas IgA, ceruloplasmina, transferrina, albumina, IgG, haptoglobina, α1-glicoproteína ácida e P24, no soro e no líquido peritoneal. Houve aumento nas concentrações sérica e peritoneal de todas as PFA, sendo mais evidente no líquido peritoneal e nos animais obstruídos. O fracionamento eletroforético das PFA no líquido peritoneal é mais eficaz no diagnóstico de processos inflamatórios abdominais, quando comparado ao sérico.

Artificial activation of bovine and equine oocytes with cycloheximide, roscovitine, strontium, or 6-dimethylaminopurine in low or high calcium concentrations

Knowledge on parthenogenetic activation of oocytes is important to improve the efficiency of nuclear transfer (NT) and intracytoplasmic sperm injection (ICSI) because artificial activation of oocyte (AOA) is an essential step to achieve embryo production. Although different procedures for AOA have been established, the efficiency of in vitro production of embryos remains low, especially in equines and Bos taurus bovines. In an attempt to improve the techniques of NT and ICSI in bovine and equine species, we tested different combinations of drugs that had different mechanisms of action for the parthenogenetic activation of oocytes in these animals. The oocytes were collected, in vitro matured for 24 to 30 h and activated artificially, in the presence of low or high concentrations of calcium, with combinations of calcium ionophore (ionomycin) with cycloheximide, roscovitine, strontium, or 6-dimethylaminopurine (6-DMAP). For assessment of activation rates, oocytes were stained with Hoechst 33342 and observed under an inverted microscope. We showed that all combinations of drugs were equally efficient in activating bovine oocytes, with the best results obtained when high concentrations of calcium were adopted. For equine oocytes, high concentrations of calcium were not beneficial for the parthenogenetic activation and the combination of ionomycin with either 6-DMAP or roscovitine was effective in inducing artificial activation of oocytes. We believe that our preliminary findings provide some clues for the development of a better AOA protocol to be used with these species.

Establishment of peritoneal liquid electrophoretogram from healthy horses and horses submitted to experimentally induced intestinal obstruction

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

ESTUDO DOS EFEITOS DO CLORANFENICOL SOBRE A CICATRIZAÇÃO INTESTINAL EM EQÜINOS

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Resistência anti-helmíntica em equinos na Região Oeste do Estado de São Paulo

Pós-graduação em Ciência e Tecnologia Animal - FEIS

Achados radiográficos e ultrassonográficos em equinos com doença do navicular

The distal sesamoid bone, also known as navicular bone, is located inside the hoof, palmar (thoracic limbs) or plantar (pelvic limbs) to distal interphalangeal joint. Its extremities are fixed by collateral medial and lateral sesamoidean ligament and distal impar sesamoidean ligament. Navicular disease diagnostic is made through a thorough clinical exam, nerve blocks and imaging exams. Even though imaging exams are not conclusive, they are essential to evaluate the extension of soft tissue lesions. Radiographic projections used to evaluate navicular bone are lateromedial (LM); dorsoproximal-palmaro/plantarodistal oblíqua (D30Pr-PaDiO); dorsoproximal-palmaro/plantarodistal oblíqua (D60Pr-PaDiO) e a palmaro/plantaroproximal-palmaro/plantarodistal oblíqua (PaPr-PaDiO). This exam allows to identify number and shape alterations of synovial invaginations on the distal (foramem nutricio) in the distal margin of distal sesamoid, osteophytes, enthesophytes and periarticular lesions. There are four ultrasonographic accesses described in literature to evaluate podotroclear apparatus, they are: palmar or plantar distal do the pastern, through the heel bulbs, through coronary band and transcuneal. These images allow a beeter the evaluation of soft tissue next to the distal sesamoid, because it is more sensitive than radiographic exam to evaluate acute lesions in soft tissues and perioesteum

Indicações da artroscopia em equinos

One of the main causes of incapacity in athletes, be they human or equines, is the occurrence of intra-articular lesions. The equines are each time more required in his athletic performance, resulting in intense stress to the structures that composes the locomotor device. The leading cause of human and equine athlete’s functional incapacity is the intra-articular disorders. One of the greatest advances in sports medicine was the development of arthroscopy as a minimal invasive intra-articular surgery. The defining characteristic of diagnostic or surgical arthroscopy is featured by minimal tissue damage and broad inspection of internal structures inside the joint associated with low morbidity and complications. The advantages of surgical arthroscopy over traditional surgery are well known: limited hospitalization, early return to competition, lower risks of post-operative joint rigidity, magnification of inspected structures, joint lavage associated or not with removal of potentially dangerous substances. Arthroscopy cannot replace conventional methods and must not do so; however, the intrinsic limitations of conventional diagnostic techniques, such as radiology and synovial fluid analysis, must be kept in mind, particularly in evaluating damage to cartilage and the synovial membrane. Arthroscopy has now become the accepted method of performing all joint surgery, however it is mainly used for radical surgery, such as osteochondral fragment removal, surgical curettage and arthroplasty

Alterações no equilíbrio ácido-base em equinos submetidos à prova de três tambores ou à competição de enduro de 160 Km

Pós-graduação em Medicina Veterinária - FCAV

Farmacocinética da gentamicina asministrada pela via intravensa regional em equinos com a utilização de modelos de torniques

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Determinação sérica de haptoglobina, ceruloplasmina, alpha(1)-glicoproteína ácida, transferrina e alpha(1)-antitripsina, em equinos com cólica

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Modelos lineares generalizados mistos e equações de estimação generalizadas para dados binário aplicados em anestesiologia veterinária

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Seleção assistida por marcadores para o melhoramento do desempenho de equinos em corridas

Although equines have participated in the forming and development of several civilizations around the world since their domestication 6,000 years ago in comparison to other species that have zootechnical interest, few researches have been done related to animal breeding area, especially in Brazil. Some reasons for that are difficulties associated with the species as well as operational aspects. However, developments in genetics in the last decades contributed to a better understanding of the traits related to reproduction, heath, behavior and performance of domestic animals, including equines. Recent technologies as next generation sequencing methods and the high density chips of SNPs for genotyping allowed some advances in the researches already done. These researches used basically the candidate gene strategy, and identified genomic regions related to diseases and syndromes and, more recently, the performance in sport competition and specific abilities. Using these genomic analysis tools, some regions related to race performance have been identified and based on this information; genetic tests to select superior animals for racing performance have started to be available in the market.

Processamento da amostra das silagens de grãos úmidos de sorgo com baixo e alto tanino na determinação da digestibilidade aparente em equinos

There were used four castrated male horses, crossbred. It was used randomized block by design for four replications. The objective was to evaluate the effect of using samples, ground or in natura, in the precision of the mobile nylon bag technique (MNBT) in comparison to the total collection (CT) method in oder to estimate the apparent digestibility coefficient (DC) of nutrients of high-moisture grains silage of sorghum with low (SSLT) and high (SSHT) tannin in the feeding equine. No effect was observed for MNBT and CT methods with in natura sample for DC of DM, OM, CE, CP to SSLT (P>0.05), whose average values were 81.71, 84.23, 82.27 e 81.43%, respectively. The MNBT did not showacuracy to evaluate of DC of the SSHT, with ground and in natura samples. It was concluded that MNBT containing in natura sample should be used to determinating the DC of SSLT to DM, OM, CE and CP for equines.

Índice de resistência múltipla aos antimicrobianos, concentração inibitória e beta-lactamases de espectro estendido em linhagens de Proteus mirabilis e Proteus vulgaris isoladas de diferentes afecções em animais domésticos

Pós-graduação em Medicina Veterinária - FMVZ