Time filter

Source Type


Do Prado Firmino M.R.,University of Northern Parana | De Oliveira Araujo L.,UENP | Sanches Bermudes J.P.,UENP | Moreira R.C.,UENP | And 2 more authors.
Gerokomos | Year: 2013

Introduction: the lack of epidemiological data about leg ulcers in Brazil justifies this study. So, the aim of that research was to estimate the prevalence of leg ulcers. Methods: epidemiological prevalence study, by conglomerates, performed at Bandeirantes city - PR, Brazil, between August-November 2012. Results: 1,499 individuals participated on the study. Prevalence was 6/1,000 persons, with major occurrence between women and elder people. Discussion: Prevalence found was higher than other studies like those preformed in Spain and Portugal, and the profile of the people was very similar to literature.

This experiment evaluated the effects of temperature on sex inversion survival and presence of deformities in larvae of tilapia subjected to the following treatments control (28°C + diet 60 mg kg-1 of 17 α-methyltestosterone), 28, 30, 32 and 34°C. The results showed a statistical difference between the proportion of males, with temperatures control, 32 and 34°C (98, 91, 96%, respectively) showed better results than those obtained for treatments 28 and 30°C (71 and 82%). The survival observed in different treatments were 90.74, 90.49, 88.20, 85.43 and 82.16 for the control, 28, 30, 32 and 34°C, respectively, and there was statistical difference between treatments 32 and 34 °C, only when these were compared with the control. In the analysis of the radiographs was not possible to observe the presence of morphological changes in fish subjected to different treatments. With this experiment, we concluded that the temperatures of 32 and 34C were able to genetically larvae masculinizing females, and that there was no increase in mortality and the presence of deformities could be attributed to treatment. This technique is an alternative to use of steroid hormones.

Today the brazilian poultry industry sets Brazil as the third largest producer of chicken meat. The poultry production sector is extremely organized in all its segments, from birth to slaughter poultry. One of the most laborious is the pre-slaughter, which ranges from the feed withdrawal to the lairage time at the plant. Due to this fact this research highlights the most critical points in the pre-slaughter period, as: feed withdrawal, capture, catching, transport and lairage time in the plant.

Zanoni M.A.,University of Northern Parana | Costa F.G.,University of Northern Parana | Nazareno A.,UENP | Oliveira C.A.L.,State University of Maringa | Ribeiro R.P.,State University of Maringa
Semina:Ciencias Agrarias | Year: 2014

The experiment was conducted to evaluate the influence of tamoxifen on sexual inversion of Nile tilapia larvae from two days of life, the experimental desing was compounded of five treatments and three replicates, and fish were fed diets with different amounts of tamoxifen: 0, 25, 50, 75 and 100 mg kg -1 of feed. After 28 days of treatment, larvae were counted and transferred to water tanks of 500 liters and then which were fed with a diet containing 28% crude protein for more 60 days. After this period the fry were sexed by the "squash". The survival 75.5 ± 5.74, 73 ± 4.76, 66 ± 11.19, 76.5 ± 4.12, 75 ± 3.46 and average percentage of male individuals 62.5 ± 5, 70 ± 8.1, 60 ± 8.2, 70 ± 0.0, 62.5 ± 9.5 for treatments 0, 25, 50, 75 and 100 mg of tamoxifenkg-1 diet, respectively, showed no statistically significant differences (p<0,05). The number of gonads in each fish experienced a significant reduction in the treatments with 75 and 100 mg of tamoxifen (89.3 and 79.3 ± 0.527 ± 0.378) when compared with treatments 0, 25 and 50 mg of tamoxifen (98, 9 ± 1.0, 97.6 ± 1.0 and 94.5 ± 1.0, respectively), the histological structure of female gonads did not differ and ovaries in all treatments showed well-defined and oocytes at several stages of maturation.

In order to increase accuracy and reduce the subjectivity in the evaluation of radiographies, several methods have emerged. The most accepted of these methods is the Vertebral Heart Size method (VHS), or the heart's size versus the thoracic vertebra's unit. The intention of this research was to apply the VHS measurement method in clinically healthy American pit bull terrier, with the purpose of establishing the average VHS for this breed. Chest x-rays in lateral projection were taken, and these were empirically evaluated and measured so that a VHS value was obtained, as well as the thoracic depth/ width (D/W) relation for each animal. None of the animals had abnormal results when evaluated via empiric analysis. VHS values had a normal distribution, as did D/W relations, with an average of 10.9±0,4 vertebrae for VHS and 0.80±0,07 for D/ W relations. VHS values showed a significant difference (P>0.05) when compared to the results obtained by BUCHANAN & BÜCHELER (1995). However, VHS values in this study are similar to those described by several other authors, confirming the need to establish values of VHS for each breed.

Discover hidden collaborations