The aim of this study was evaluate the renal hemodynamics of bitches with pyometra by means of laboratory tests, ultrasound B mode and Doppler, before and after treatment with ovariohysterectomy (OSH). This study evaluated 30 bitches with pyometra, all were subjected to OSH (moment 1) and 20 were evaluated after 7 days (moment 2). The renal perfusion, the resistivity index (RI) of the main renal artery and the interlobar arteries (cranial, middle and caudal) were statistically different between times 1 and 2 (p<0,05). There was no statistical difference for renal perfusion between the left and the right kidney at the time 1 and 2. The correlations between the IR of the main artery and the variables used to determine renal function were stablished at the time 1. For the correlated variables: urea, creatinine, proteinuria, ratio GGT/creatinine and protein/creatinine were curvilinear and positive associations with the resistivity index of the main renal artery (p<0,05), however these correlations were considered medium and weak. Comparing the RI of the main renal artery with different scores of dehydration and renal perfusion, there was statistical difference, and show increased of resistance renal in bitches with moderate reduction in renal perfusion as well as in dehydrated bitches. Were evaluated several features of renal morphology in ultrasound B mode, however, only the presence of pelvic dilatation, medullary signal and other changes as infarcts areas and diffuse hyperechoic spots in the renal cortical and medullary were statistically different from one moment to the other, most frequently at the time 2. The results of this study show that the Doppler ultrasound can identify changes of reduction in renal perfusion by color Doppler and the increasing of the resistivity index of the renal arteries in some bitches with pyometra. As well as, the ultrasound B mode, although has non-specific changes, can detect progressive renal disorders in bitches with pyometra.

Both kidneys showed similar morphometric parameters by B-mode ultrasound, whereas RI by spectral Doppler decreased progressively from renal artery to interlobar and arcuate arteries.

Estudo da correlação da densitometria óssea e do perímetro diafisário medial do terceiro metacarpiano em equinos[Correlation study on equine bone densitometry and third metacarpus diaphyseal perimeter]

The herbicide trifluralin is one of the most widely herbicides used in weed control. This study aims to evaluate the genotoxic potential of the trifluralin herbicide on the Colossoma macropomum (tambaqui) using a multi-biomarker approach. The C. macropomum is highly adapted and predominant species in a variety of water bodies in the delta region of the São Francisco River and other river systems in Brazil. The mutagenic and the genotoxic effects of different trifluralin concentrations (0.25, 0.5, 0.75, 1.0 mg L-1) in peripheral erythrocytes of C. macropomum were investigated using micronucleus (MN), comet assay and apoptosis test. After an exposure period of 96 h, the results showed a significant rate of micronuclei and nuclear abnormalities in erythrocytes of C. macropomum exposed to 0.5, 0.75, 1.0 mg L-1 of trifluralin. Compared to controls, the genetic damage index (GDI) showed significant variations (**p < 0.01 and ***p < 0.001) for all the trifluralin concentrations tested. The genotoxicity of trifluralin herbicide on C. macropomum was confirmed by the micronucleus test and comet assay.

Abstract. We observed a putative case of empathy among wild black-fronted titi monkeys (Callicebus nigrifrons) from two different groups (D and R). In over 10 years of behavioural observations of five habituated groups of this species, only low levels of inter-group tolerance have been observed. However, on one day, we encountered the adult male from group D limping (poor hind limb motor coordination) as he travelled alone along the ground. Interestingly, we observed that members of group R did not express any agonistic behaviour towards this neighbouring male and apparently allowed this disabled individual to follow them in the forest for over 5 h. They stayed low in the forest (< 2 m above the ground) and < 10 m horizontally from the individual, and remained in visual contact with him. At the end of the day, this male from group D slept in the sleeping site of group R and was groomed by the adult female of group R. Such tolerance between members of different groups has never been previously observed in this species. Furthermore, group R exposed themselves to increased predation risk by staying close to the ground for protracted periods. The behaviour of group R could be interpreted by as a putative case of empathic responding in this species.

RESUMO.-[Avaliação ultrassonográfica por Doppler da artéria mamária de cordeiras da raça Bergamácia Brasileira sob a influência de dois planos de alimentação diferentes.] O suprimento sanguíneo da glândula mamária é extremamente importante, uma vez que é um fator crucial para o desenvolvimento do tecido mamário. Assim, a necessidade de registro dos parâmetros de fluxo sanguíneo arterial é evidente. O objetivo do estudo foi descrever e avaliar as principais características hemodinâmicas da artéria mamária de cordeiras submetidas a diferentes taxas de crescimento, usando o ultrassom Doppler. Dois grupos experimentais, A e B, (n=10) de cordeiras da raça Bergamácia brasileira foram mantidas sob as mesmas condições de manejo e instalações. O estudo foi dividido em diferentes fases, sendo: Fase 1, de 90 dias de idade até o início da puberdade; Fase 2, desde a puberdade até 1 ano de idade. Blood supply of mammary gland is extremely important, since it is a crucial factor in the mammary tissue development. The objective of this study was to describe and assess main mammary artery hemodynamic characteristics of lambs with two growth rates, using Doppler ultrasound. Two experimental groups, A and B, (n=10) of female Brazilian Bergamasca lambs were kept under the same management conditions and facilities. There were two phases: Phase 1, from 90 days of age until onset of puberty; Phase 2, from puberty until 1 year of age. During phase 1, a specific diet was formulated to each experimental group to obtain two different average daily gains: 150g, for treatment A, and 250g, for treatment B. During phase 2, there was no difference on the diet offered to both groups. Every 14 days, all animals were weighed and their body condition score was evaluated. Every 60 days, ultrasound exams (Doppler) of mammary artery were performed to obtain resistance and pulsatility indexes. Treatment B lambs showed higher weight gain and higher body condition score (P<0.05). However, for resistance and pulsatility indexes, there was no difference between treatments (P>0.05). Hemodynamic values remained constant, independent of diet or body development presented by the animals. Obtained data is valuable information on Bergamasca ewe lambs development.INDEX TERMS: Doppler, ultrasonography, ultrasound, mammary artery, dairy ewes, Brazilian Bergamasca, feeding plans, blood flow, dairy lamb, nutrition.

Clinical Nutrition Open Science 37 (2021) 12e24 diaphysis and the medullar region of tibial medial diaphysis were higher (p 0.05) in the OVXa group when compared to OVXc, the latter being also higher than SHAM groups, suggesting efficacy in preventing dysfunctions related to bone changes. Conclusion:The albedo of Tahiti lime showed relevant characteristics and the results from the in vivo experiment are suggestive of effectiveness in preventing dysfunctions related to bone changes.

RESUMODescreveu-se a anatomia da região cervical de equinos adultos, com base em imagens obtidas no exame de tomografia computadorizada helicoidal realizado em peças anatômicas de equinos adultos. A tomografia computadorizada foi o método de imagem diagnóstica de escolha e possibilita as reconstruções de imagens tridimensionais e em outros planos anatômicos, como sagital e coronal. Todas as imagens foram adquiridas e avaliadas em filtro e janela para tecido ósseo. Observaram-se diferenças anatômicas e as particularidades normais das vértebras, principalmente da região occipitoatlantoaxial, a qual apresenta maior incidência de alterações.Palavras-chave: cavalo, tomografia computadorizada helicoidal, coluna cervical ABSTRACT The anatomy of the cervical spine of mature horses based on images obtained with a helical computed tomography examination performed on anatomic specimens was studied. Computed tomography was the diagnostic imaging method of choice and allowed three-dimensional reconstructions of images and other anatomical planes, such as coronal and sagittal. All images were acquired and evaluated in the filter and window to bone tissue.It was possible to demonstrate the anatomical differences and peculiarities of the normal vertebrae, particularly the occipito-atlantoaxial region, which has a higher incidence of changes to assist in the visualization of any change of the bone pattern on CT studies.