Entity

Time filter

Source Type


Goncalves G.F.,University Federal da Fronteira Sul | Zanatta R.,University of Cuiaba | Souza M.A.,UFMT | Nespoli P.E.B.,UFMT | Souza R.L.,Programa de Pos Graduacao em Ciencias Veterinarias
Semina:Ciencias Agrarias | Year: 2013

Osteoarthritis (OA) is the most common joint disease in both humans and animals, and it results in movement restriction and pain at the affected area. This disorder affects more than 25% of people over 60 years of age, and it is considered universal for 70-year-old people. OA is estimated to affect over 20% of the canine population from the United States of America. The present study aimed to evaluate the treatment of rats that were surgically induced to OA using two different drug therapies, one with pentosan polysulfate, one with betamethasone, and one with chondroitin sulfate/ glucosamine. In order to produce joint disease, the cranial cruciate ligament was surgically transected. Animals were kept and treated for eight days after surgery and were assessed via both radiographies and tomographies taken before surgery and eight weeks later. All animals were euthanized having both macroscopic and microscopic analysis performed to evaluate the disorder progression and therapeutic action. Macroscopic analysis showed lesion in the knees subjected to OA induction. The untreated animals presented major lesions whereas the treated ones presented mild to moderate lesions. In conclusion, pentosan polysulfate is recommendable for the treatment of iatrogenic joint lesions in rats since the other treatments showed no significant difference. Source


Bandeira G.C.,Federal University of Ceara | Campos A.C.N.,Federal University of Ceara | Pereira E.S.,Federal University of Ceara | Linard M.A.B.,Federal University of Ceara | And 6 more authors.
Semina:Ciencias Agrarias | Year: 2016

This study was carried out to verify the effects of different hay: concentrate ratios on body, testicular and epididymal development and metabolic profile of hair sheep lambs. Twenty-nine Santa Ines lambs were used. Treatments consisted of diets with different hay: concentrate ratios (100:0-Control, 80:20- T1, 60:40-T2, 40:60-T3 and 20:80-T4). The characteristics evaluated were: body weight (BW), body condition score (BCS), hearth girth (HG), body length (BL), height at withers (HW), height at rump (HR), rump width (RW), chest width (CW), scrotal perimeter (SP), testis length (TL) testis width (TW), testis thickness (TT), cauda epididymal length (CEL), cauda epididymal width (CAW), cauda epididymal thickness (CET), scrotal skin thickness (SST) and testicular volume (TV). Blood samples were collected to analyze glucose, urea, albumin, total cholesterol, total proteins, inorganic phosphate and magnesium concentrations. The body and testicular-epididymal measurements increased linearly with increases in the energy concentration in the diet. BW, BL, CW, RW, HG and BCS showed positive high correlations (r = 0.71 to 0.94) with all testis-epididymal measurements. The results of the metabolic profile study showed interactions between the addition of the concentrated feed and time of blood collection on total proteins, albumin, urea, cholesterol, phosphorus and magnesium concentrations. At the beginning of the trial, hypoproteinemia and hypoalbuminemia were verified in T3 and T4. However, the indices returned to normal over time with the continuity in the diet supplied. Hypomagnesaemia was verified in all treatments. The plasmatic phosphorus concentration was sufficiently high at the end of all treatments, except control. In conclusion, the BL, HG, CW, RW as well as the BCS may be used to estimate the development of the testes and epididymis. The metabolic profile results verified that adjusts are necessary in the amount of concentrated feed given to the lambs when Tifton 85 hay (Cynodon spp) is provided to the animals. Source


Pradiee J.,Federal University of Pelotas | Moraes C.R.,Programa de Pos Graduacao em Ciencias Veterinarias | Goncalves M.,Federal University of Pelotas | Vilanova M.S.,Federal University of Pelotas | And 5 more authors.
Acta Scientiae Veterinariae | Year: 2012

Background: Infectious mastitis has been described as one of the main diseases affecting animals during lactation. The disease in sheep has been studied for many years in countries where mastitis has an economical importance. However, the interest in mastitis studies in animals raised for food production has increased, because the disease may cause a reduction in weight and an increased mortality in lambs. In this study, Somatic Cells Count (SCC) and California Mastitis Test (CMT) were related to bacterial isolation for mastitis diagnosis in Corriedale sheep. Material, Methods & Results: Twenty nine (29) ewes, varying from 2-5 years of age, with different numbers of lactation and born lambs and never before machine-milked were used. Milking was done from October to November, once a week in the morning period, with oxytocin application. Four milk collections were made, at biweekly intervals for bacteriologic, SCC and CMT test, which were analyzed considering each gland as a sampling unit. Low incidence of subclinical mastitis (9.66%) was observed, with the majority (15/17) caused by coagulase negative Staphylococcus. There was no change in milk production related to SCC or bacteria isolation. However changes in milk components occurred in the presence of subclinical mastitis. A poor relation (k = 0.115) was determined between the results obtained in the bacteriological test and the SCC, with low sensitivity (13.33%) and an increased number of false negative results (13%). Comparing the SCC and CMT results as the diagnostic method for subclinical mastitis, a low (r = 0.2319) but significant (P = 0.0209) correlation was observed, as well as a poor concordance (k = 0.152). Using bacterial isolation as the standard test, it was determined that the CMT has low sensitivity (28.57%) as the diagnostic method of mastitis in ewes. Discussion: Mastitis has been considered an economically important disease in the production of sheep for meat and wool. According to reports, the frequency of its clinical occurrence may range from zero to 50%. In meat-producing herds, a low weight gain in lambs has been associated with subclinical mastitis and the study of mastitis in Corriedale sheep is justified since this is considered a breed of meat sheep with the best milk production. This breed is being crossed with milkproducing breeds, such as Laucane, to form milk-producing herds. Bacterial isolation has been adopted as the diagnostic method of mastitis in all livestock breeds. Similarly to the observation made by this study, Staphylococcus and, in a few cases, Streptococcus, have been the microorganisms most frequently involved in subclinical mastitis in sheep. The milk from ewes with mastitis tends to have a lower fat and lactose content than that of healthy ewes, due to the affected secretory function of these animals. The SCC of milk ewes has not yet been established, but its count in a healthy udder may reach up to 1.5x106 cel.mL-1. Similarly, the CMT score to be used in sheep is still controversial, but the maximum score (+++) is adopted to indicate mastitis. The high number of false-negative and false-positive reactions observed in SCC and CMT tests means that healthy and ill animals are incorrectly identified and that no preventive and curative measures are adopted. Since the utilization of only one diagnosis method in sheep mastitis, without confirmation by bacteriologic test is not conclusive, the SCC and CMT should be used cautiously in sheep mastitis diagnosis. Source


Da Cruz Boa Sorte E.,Medica Veterinaria Autonoma | Da Cruz F.A.C.S.,Programa de Pos Graduacao em Ciencias Veterinarias | Gasparetto N.D.,Programa de Pos Graduacao em Ciencias Veterinarias | De Godoy I.,Programa de Pos Graduacao em Ciencias Veterinarias | Amendoeira M.R.R.,Laboratorio Of Toxoplasmose
Semina:Ciencias Agrarias | Year: 2015

This study aimed to determine the prevalence of Toxoplasma gondii infection using serological and molecular analyses in dogs from Cuiabá, a municipality of the Brazilian Cerrado, and the associated factors involved in the transmission cycle. A cross-sectional study was conducted with dogs from the rural and urban areas of Cuiabá (Mato Grosso) from February 2010 to January 2011, and antibodies and the DNA of Toxoplasma gondii were evaluated using indirect immunofluorescence (IFA) and polymerase chain reaction (PCR). In the study, a total of 269 dogs were evaluated using IFA considering positive titer threshold of ≥ 16 and buffy coat PCR. Of the 269 dogs surveyed, 48.7% had anti-Toxoplasma gondii antibodies according to IFA, and 15.6% had the parasite's DNA. The seroprevalence was 62.4% in the rural districts and 40.4% in the urban areas, and the difference between these areas was significant (p = 0.0007). The most common levels of antibody titers were 256 in 51 (39%) dogs, followed by 1024 in 37 (28.2%) dogs. The infectious agent was associated with breed, age, access to the street and the environment in which the animal lived (p <0.05). The serological and molecular results showed that T. gondii infection is active in the canine population in the rural and urban areas of Cuiabá, with a higher risk in dogs residing in rural areas. Source


De Oliveira F.B.B.,State University of Ceara | Fernandes C.C.L.,Programa de Pos Graduacao em Ciencias Veterinarias | Silva A.M.,Programa de Pos Graduacao em Rede Nordeste Biotecnologia | Silva C.M.G.,Federal University of Piaui | And 3 more authors.
Semina:Ciencias Agrarias | Year: 2016

This study evaluated the impact of nutritional status of Morada Nova sheep at lambing on the reproductive and productive performance and on the survival of lambs in early weaning system. Nineteen, Morada Nova sheep were assigned to two groups according to body condition score (BCS) at lambing: low BCS (n = 11) and high BCS (n=8) with body condition respectively of (mean ± SD) 2.0 ± 0.3 e 2.9 ± 0.1. From birth until lamb weaning (45 days), sheep were weighed weekly and checked the BCS, loin subcutaneous fat thickness, loin depth, hematological profile, milk composition and production, and every three days, we measured the uterine diameter. Lamb weightings were performed up to one week after weaning (52 days). The lower availability of muscle and fat reserves in the low BCS group negatively affected milk production and consequently performance of suckling lambs. However, the results indicated that the uterine involution process, the reproductive parameters including prolificacy, rate of multiple births, number of white blood cells, milk quality, body weight of lambs at birth and mortality rates were not affected by the body condition. The results allowed to describe the responsiveness to opposite nutritional status of Morada Nova sheep, showing their characteristics of adaptation. Source

Discover hidden collaborations