Ciencia Animal

São Luís, Brazil

Ciencia Animal

São Luís, Brazil

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Afonso V.A.C.,Centro Paula Souza | Costa R.L.D.,Institute Zootecnia | Filho C.V.S.,São Paulo State University | Da Cunha E.A.,Institute Zootecnia | And 2 more authors.
Semina:Ciencias Agrarias | Year: 2013

This experiment aimed to determine the influence of supplementation with protected fat on nematode infections in periparturient sheep or sheep in their final stage of pregnancy. Fifty Santa Ines ewes received 200 g of concentrate/animal/day, mineral salt and water and were grouped according to their weight, hematocrit and the number of eggs per gram of feces (EPG). Two diets were used: a control treatment and a treatment consisting of supplementation with 30 g/animal/day of protected fat in the concentrate. Three monthly evaluations were performed over a total of 84 days of testing. The variables analyzed were weight, body condition, EPG and coprocultures; blood tests were performed for the determination of packed cell volume, hemoglobin concentration and total plasma protein, and leukograms and eosinophil counts were performed. For weight and hemoglobin concentrations, interactions were observed between diet and collection date (P<0.05); body condition, total plasma protein, packed cell volume and total leukocytes did not differ statistically among treatments (P> 0. 05) but did differ by collection day (P <0.05). The EPG and eosinophil counts did not differ statistically by either diet or collection date (P>0.05). The genus Haemonchus was predominant, followed by the genera Cooperia, Trichostrongylus and Oesophagostomum. The protected fat did not decrease EPG and did not improve the blood parameters of infected sheep.

Da Costa Araujo D.L.,UFPI | De Oliveira M.E.,Programa de Pos Graduacao em Ciencia Animal | Lopes J.B.,Programa de Pos Graduacao em Ciencia Animal | De Azevedo Alves A.,Programa de Pos Graduacao em Ciencia Animal | And 3 more authors.
Semina:Ciencias Agrarias | Year: 2015

This study was accomplished to evaluate the behavior and performance of goats in to grazing on grass Andropogon gayanus Kunth var. Bisquamulatus (Hochst) Hack. cv. Planaltina submitted to three forage allowances: 11, 15 and 19% BW/day, under continuous grazing. The experimental design to assess the grazing behaviour was randomized blocks in a split-plot with five replicates within the block. In the plots, we evaluated the effect of forage allowances and in the subplots, the months May and June. While for evaluation of animal performance was in complete block design with five replicates within the block. The different forage allowance did not cause structural changes in the pasture, except in height. However, there was an increase of dead material, leaf/stem ratio and reducing of height during the grazing period. The behavioral variables were not affected by forage allowance, except for the time of displacement, whereby goats spent more time in pastures with offer of 11% BW. The goats remained most part of the time in grazing and idle, corresponding to 89% and 5% of the evaluation time, respectively. Higher bit rate was observed in June, among the offerings, and 15 and 19% BW. The ingestive and grazing behaviour in goats is changed by the accumulation of dead material and stem in pasture from Andropogon grass during at rainy season. The forage supply 11% of BW increases the time of displacement of goats grazing on Andropogon grass. The management of grazing Andropogon grass with forage allowance being 11 and 19% of BW provides low weight gains in goats during the rainy season.

Domingues A.R.,State University Londrina | Da Silva L.D.D.F.,State University Londrina | De Azambuja Ribeiro E.L.,State University Londrina | De Souza Castro V.,Ciencia Animal | And 4 more authors.
Semina:Ciencias Agrarias | Year: 2010

The objective of this study was to assess the effects of five substitution levels of cotton meal by sunflower cake in the concentrate ration, on dry matter intake (DMI), pH and ammonia nitrogen (N-NH3) in the rumen liquid and plasmatic urea in beef steers. The diets were isoprotein (13.0% CP) and isoenergetic (72.0% TDN). In natura sugarcane silage was the only ronghage (40% DM). Five 1/2 Simental x Nelore, castrated males were used, with average weight of 380 kg and 24 months old, all fistulated in the rumen. The treatments were: 0% sunflower cake (TG0); 25% sunflower cake (TG25); 50% sunflower cake (TG50); 75% sunflower cake (TG75); and 100% sunflower cake (TG100), based on DM, substituting cotton meal (FA). The experiment was carried out in a 5×5 Latin square experimental design, with five animals and five periods. Each experimental period lasted 15 days. The dry matter intake (DMI) presented significant difference (P < 0.05), showing that substituting cotton meal by sunflower cake resulted in lower DM intake, but this substitution did not (P > 0.05) alter the pH and N-NH3 values of the rumen liquid and plasmatic urea values. It was concluded that sunflower cake can be used in substitution to the cotton meal when mean daily gains are expected, since in high levels of substitution it caused a decrease in DMI.

Castilho C.,University of West Paulista | De Almeidav M.F.,Ciencia Animal | Giometti I.C.,University of West Paulista | Costa M.Z.,Autonomos | And 2 more authors.
Semina:Ciencias Agrarias | Year: 2015

The aim of this study was to test the hormonal protocol for fixed-time artificial insemination (TAI) with a progesterone vaginal device for six days applying equine chorionic gonadotropin (eCG) or estradiol benzoate (EB) as an ovulation inducer in ewes. On day 0(D0), the ewes (n=31) received a device containing 0.33 g of intravaginal progesterone (CIDR®) and were divided into three groups. The G-CT (control group) used CIDR for nine days and upon withdrawal of the progesterone, were administered prostaglandin F2 alpha (PGF2α) and eCG. In the eCG (G-eCG) group, CIDR was administered for six days, instead of nine as in the G-CT group, followed by PGF2a and eCG after progesterone withdrawal. In the EB (G-EB) group, CIDR was also administered for six days, but eCG was not applied, and EB was used to induce ovulation 24 hours after removing the CIDR and PGF2a application. TAI was realized in all groups 50 hours after CIDR withdrawal. The pregnancy rate in the G-eCG group (66.66%) was higher (p <0.05) than that in the G-EB group (11.11%). The short-term groups showed no difference (p>0.05) compared to the G-CT group (30%). It is possible to reduce the application time of the progesterone and use eCG for TAI in sheep; however, using EB resulted in a low ovulation rate in the sheep.

Bach M.,Pontifical Catholic University of Parana | Villanova J.A.,Jr. | Tasqueti U.I.,Ciencia Animal | Pimpao C.T.,Processos Biotecnologicos | And 2 more authors.
Semina:Ciencias Agrarias | Year: 2015

Rupture of the cranial cruciate ligament (RLCCr) is one of the most common injuries in the dog and the leading cause of degenerative joint disease (DAD) of the knee. Untreated animals exhibit degenerative joint changes in a few weeks and severe changes within a few months. The severity of degeneration appears to be directly proportional to body size and age. Systemic inflammatory joint diseases are associated with the rupture of this ligament. The aim of this study was to characterize the population of dogs suffering from RLCCr according to the following factors: type of lameness, unilateral or bilateral ligament rupture, breed, age, sex, reproductive status, diet, body weight, presence of DAD and patellar luxation prior to RLCCr. The data base was created from information from medical records of 32 dogs diagnosed with RLCCr in Companion Animals Hospital Uninity, Catholic University of Parana in the period from January 2006 to December 2012. The results showed that most of dogs (56.25%) had weight bearing lameness on initial presentation. The unilateral RLCCr was the most frequent (90.62%), 13.8% of these cases presented RLCCr in the contralateral limb, after an average period of 2 years and 4 months. The most frequent breeds were Toy Poodle (21.9%) and Pitbull (18.75%); mixed breed dogs accounted for 12.5% of cases. The most frequent ages were 2, 3, 4 and 7 years (average = 5.7 years). With respect to sex and reproductive status, females (68.75%) and non-castrated animals (69%) were most affected. As for diet, the majority (59.38%) ate commercial dog food. Regarding body weights, the majority (25%) weighed between 26 and 35 kg. DAD and patellar luxation prior to RLCCr were seen in 53.12% and 21.88% of the patients, respectively. It could be observed that the data in our environment tend to be similar to those of the literature: RLCCr occured in large adult dogs, weighing between 26 and 35 kg with unilateral rupture and weight bearing lameness and affected females more than males. Animals receiving commercial dog food and entire dogs were the most affected. Patellar luxation before RLCCr occurred in a minority of animals, different from the DAD preceding RLCCr, that was seen in most cases.

De Freitas E.J.P.,Federal University of Minas Gerais | Lopes C.E.R.,State University of Maranhão | De Moura Filho J.M.,Instituto Federal do Maranhao | Silva Sa J.,Ciencia Animal | And 2 more authors.
Semina:Ciencias Agrarias | Year: 2014

Bovine herpesvirus type 1 (BoHV-1), is responsible for clinical manifestations such as infectious bovine rhinotracheitis, abortion, conjunctivitis, infectious pustular vulvovaginitis and balanoposthitis. This virus has been responsible for major losses in different productive and reproductive herds in the country. Thus, the objective of this study was to estimate the frequency of antibodies against BoHV-1 in beef heifers not vaccinated in Microregion of Imperatriz, Maranhao, and identify the age group most affected by the virus, as well as a study of factors associated with virus infection and to evaluate the indirect ELISA using the serum neutralization (SN) as a reference standard. The study was conducted in 48 herds, cutting, distributed in 12 counties of Microregion of Imperatriz. The samples were collected from female cattle stratified into three age groups, = 12 months, between 12 and 36 months and = 36 months of age. The samples were subjected to two serological tests, ELISA and SN. In each herd, an epidemiological questionnaire was applied in order to obtain information on management and reproductive sanitary, for the study of risk factors. The frequency of antibodies against BoHV-1 in Microregion of Imperatriz was 63.23%, and the municipalities of A̧ailândia Buritirana showed the highest frequencies, both with 80.44%, the most affected age group, the Microregion, was animals aged = 36 months (69.65%). Based on the results we can conclude that the frequency of antibodies against BoHV-1 is high, between the age groups most affected were the animals aged = 36 months were considered risk factors for virus transmission, return to estrus (OR=1.874), recovery of animals from other states / region (OR=1.365) and the creation of goat / sheep associated with bovine (OR=1.348), the indirect ELISA technique showed moderate concordance when compared to SN technique, which is the gold standard technique for diagnosis of BoHV-1.

De Farias M.R.,Pontifical Catholic University of Parana | De Assuncao D.L.,Ciencia Animal | Duarte G.,Ciencia Animal | Vandresen G.,Ciencia Animal | And 2 more authors.
Semina:Ciencias Agrarias | Year: 2015

Sporotrichosis, a subcutaneous and zoonotic mycosis, is caused by dimorphic fungus Sporothrix schenckii. The infection occurs after a traumatic skin injury, while handling plant materials or animals. This disease commonly occurs in cats and is rarely reported in dogs. Herein we report a case of bone sporotrichosis in a dog that presented at the Hospital Unit for Pets (HUP) of the Pontifical Catholic University of Paraná (PUCPR). The animal had a 4-month history of lameness in its thoracic limbs. Haematological, radiological, mycological, and histopathological tests were conducted to confirm the diagnosis. The animal was treated for 2 months with a 10 mg kg-1 PO SID dose of itraconazole, but only partial improvement was observed. A 20% supersaturated potassium iodide solution i.e., a 40 mg kg-1 dose every 24 h was then included for regression and healing of the wounds.

De Moura A.B.,Santa Catarina State University | Matiello J.P.,Medicina Veterinaria | Da Silva M.O.,Ciencia Animal | De Souza A.P.,Santa Catarina State University | Sartor A.A.,Santa Catarina State University
Semina:Ciencias Agrarias | Year: 2016

Toxoplasmosis is a zoonotic disease caused by the protozoan Toxoplasma gondii. Among domestic species, the horse is one of those most resistant to T. gondii infection; however, upon acute infection, horses may present hyperirritability, poor motor coordination, ocular disorders, and abortion. Herein, we investigated the presence of antibodies against T. gondii, in order to identify possible risk factors for infection in horses and to establish the correlation of T. gondii infection with reproductive and/ or neurological disorders. We collected 615 blood samples from animals in the mountain mesoregion (n=311) and the coastal mesoregion (n=304) of Santa Catarina state. An epidemiological questionnaire was used to identify possible risk factors. Antibodies to T. gondii were detected by immuno-fluorescence assay (IFA.1:64) using RH strain tachyzoites of the protozoan as antigen. Correlation (P<0.05) between seropositivity and race, sex, age, diet, contact with other animals, reproductive and/or neurological disorders, and origin were assessed. The overall incidence of seropositivity was 10.4% (64/615), and in the mountain and coastal regions, 10.3% and 10.5%, respectively. The reciprocal of the titles observed was: 1:64 (36), 1:256 (26) and 1:1024 (two). There was no significant difference (P>0.05) between regions, and there was no correlation between seropositivity and the variables analyzed.

Herkenhoff M.E.,Ciencia Animal | Backes R.G.,Ciencia Animal | Gaulke R.,Analises Geneticas | Remualdo V.R.,Analises Geneticas
Jornal Brasileiro de Patologia e Medicina Laboratorial | Year: 2012

Plasma homocysteine, associated with a mutation in the methyltetrahydrofolate reductase (MTHFR) gene, is regarded as a risk factor for coronary disease. The aim of this study was to determine the number of individuals with this mutation. The exams were sent to the laboratory Genolab, comprising the city of Curitiba-PR. We analyzed reports from a two-year period through real-time PCR method. Twenty-three individuals were homozygous for genotype C, 9 were homozygous for T and 35 were heterozygous. The detection of this mutation is vital to determine the suitable approach in the initial treatment of patients with correlated coronary diseases.

De Moraes Jardim Filho R.,Ciencia Animal | Stringhini J.H.,Ciencia Animal | Stringhini J.H.,Brazilian National Council for Scientific and Technological Development | Andrade M.A.,EV UFG | And 5 more authors.
Revista Brasileira de Zootecnia | Year: 2010

In this experiment it was aimed to determine the best levels of digestible lysine for laying hens in production period. Performance, nutrients intake, metabolism, egg quality, blood parameters and development of reproductive tract for 160 Hy-Line W-36 hens at 25 weeks of age. Hens were distributed in a completely randomized design with four levels of digestible lysine (600, 700, 800 or 900 mg of Lys/kg) and four replicates by using a split spot scheme was used at evaluation of nitrogen balance, blood parameters and reproductive tract. Lysine levels in the diet affected food, protein and energy intakes whose maximum point was noted at the level of 720 mg of Lysine. For egg production, food conversion, and nitrogen balance, the best levels of lysine was 800 mg, 900 mg, and 700 mg, respectively. The digestibility of ethereal extract, egg quality, development of reproductive tract and blood parameters were not affected by levels of digestible lysine in the diet. It is suggested 700 and 800 mg of digestible lysine for metabolism and performance, respectively, and 600 mg for egg quality and better development of the reproductive trait. © 2010 Sociedade Brasileira de Zootecnia.

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