Risk factors and detection of brucella ovis in naturally infected rams and ewes / Fatores de risco e detecção de brucella ovis em carneiros e ovelhas naturalmente infectados

The objective of this study was to verify the occurrence of ovine brucellosis using Agar Gel Immunodiffusion (AGID) and Polymerase Chain Reaction (PCR) techniques, as well as to identify the main risk factors associated with infection in sheep flocks belonging to municipalities in the microregion from Teresina, PI, Brazil. A total of 100 urine and blood samples were collected from sheep aged 6 months or older. The urine samples were submitted to conventional PCR and the blood samples were examined by the AGID technique. Of the 100 blood samples, 17 (17%) were reactive to the AGID test. In conventional PCR of 100 urine samples, six (6%) were positive. Risk factors associated to infection by B. ovis included the rearing system (OR=0.19), feed management (OR=0.05), presence of dystotic births (OR=4.50), miscarriages (OR=3.75) and source of water offered to the animals (OR=0.19). Thus, it was concluded that it is possible to detect the occurrence of animals with ovine brucellosis since PCR is a reliable method to confirm infection. Furthermore, there are risk factors associated to infection by B. ovis in the municipalities studied.

Objetivou-se verificar a ocorrência da brucelose ovina através das técnicas de Imunodifusão em Gel de Ágar (IDGA) e Reação em Cadeia da Polimerase (PCR), bem como identificar os principais fatores de risco associados à infecção nos rebanhos ovinos pertencentes a municípios da microrregião de Teresina, PI, Brasil. Foram colhidas 100 amostras de urina e de sangue de ovinos com idade superior ou igual a seis meses. As amostras de urina foram submetidas a PCR convencional e as amostras de sangue à técnica de IDGA. Das 100 amostras de sangue 17 (17%) foram reagentes ao teste de IDGA. Já na PCR convencional das 100 amostras de urina, seis (6%) foram positivas. Ressalta-se que três animais foram positivos em ambos os testes. Como fatores associados à infecção por B. ovis, observou-se o tipo de sistema de criação (OR=0,19), o manejo alimentar (OR=0,05), presença de partos distócicos (OR=4,50), abortamentos (OR=3,75) e a fonte de água fornecida aos animais (OR=0,19). Assim, conclui-se que foi possível detectar a ocorrência de animais com brucelose ovina, uma vez que a PCR é um método confirmatório. Além disso, há fatores de risco associados à infecção por B. ovis nos municípios estudados.

Risk factors and detection of brucella ovis in naturally infected rams and ewes / Fatores de risco e detecção de brucella ovis em carneiros e ovelhas naturalmente infectados

The objective of this study was to verify the occurrence of ovine brucellosis using Agar Gel Immunodiffusion (AGID) and Polymerase Chain Reaction (PCR) techniques, as well as to identify the main risk factors associated with infection in sheep flocks belonging to municipalities in the microregion from Teresina, PI, Brazil. A total of 100 urine and blood samples were collected from sheep aged 6 months or older. The urine samples were submitted to conventional PCR and the blood samples were examined by the AGID technique. Of the 100 blood samples, 17 (17%) were reactive to the AGID test. In conventional PCR of 100 urine samples, six (6%) were positive. Risk factors associated to infection by B. ovis included the rearing system (OR=0.19), feed management (OR=0.05), presence of dystotic births (OR=4.50), miscarriages (OR=3.75) and source of water offered to the animals (OR=0.19). Thus, it was concluded that it is possible to detect the occurrence of animals with ovine brucellosis since PCR is a reliable method to confirm infection. Furthermore, there are risk factors associated to infection by B. ovis in the municipalities studied.(AU)

Objetivou-se verificar a ocorrência da brucelose ovina através das técnicas de Imunodifusão em Gel de Ágar (IDGA) e Reação em Cadeia da Polimerase (PCR), bem como identificar os principais fatores de risco associados à infecção nos rebanhos ovinos pertencentes a municípios da microrregião de Teresina, PI, Brasil. Foram colhidas 100 amostras de urina e de sangue de ovinos com idade superior ou igual a seis meses. As amostras de urina foram submetidas a PCR convencional e as amostras de sangue à técnica de IDGA. Das 100 amostras de sangue 17 (17%) foram reagentes ao teste de IDGA. Já na PCR convencional das 100 amostras de urina, seis (6%) foram positivas. Ressalta-se que três animais foram positivos em ambos os testes. Como fatores associados à infecção por B. ovis, observou-se o tipo de sistema de criação (OR=0,19), o manejo alimentar (OR=0,05), presença de partos distócicos (OR=4,50), abortamentos (OR=3,75) e a fonte de água fornecida aos animais (OR=0,19). Assim, conclui-se que foi possível detectar a ocorrência de animais com brucelose ovina, uma vez que a PCR é um método confirmatório. Além disso, há fatores de risco associados à infecção por B. ovis nos municípios estudados.(AU)

Risk factors and detection of brucella ovis in naturally infected rams and ewes / Fatores de risco e detecção de brucella ovis em carneiros e ovelhas naturalmente infectados

The objective of this study was to verify the occurrence of ovine brucellosis using Agar Gel Immunodiffusion (AGID) and Polymerase Chain Reaction (PCR) techniques, as well as to identify the main risk factors associated with infection in sheep flocks belonging to municipalities in the microregion from Teresina, PI, Brazil. A total of 100 urine and blood samples were collected from sheep aged 6 months or older. The urine samples were submitted to conventional PCR and the blood samples were examined by the AGID technique. Of the 100 blood samples, 17 (17%) were reactive to the AGID test. In conventional PCR of 100 urine samples, six (6%) were positive. Risk factors associated to infection by B. ovis included the rearing system (OR=0.19), feed management (OR=0.05), presence of dystotic births (OR=4.50), miscarriages (OR=3.75) and source of water offered to the animals (OR=0.19). Thus, it was concluded that it is possible to detect the occurrence of animals with ovine brucellosis since PCR is a reliable method to confirm infection. Furthermore, there are risk factors associated to infection by B. ovis in the municipalities studied.

Objetivou-se verificar a ocorrência da brucelose ovina através das técnicas de Imunodifusão em Gel de Ágar (IDGA) e Reação em Cadeia da Polimerase (PCR), bem como identificar os principais fatores de risco associados à infecção nos rebanhos ovinos pertencentes a municípios da microrregião de Teresina, PI, Brasil. Foram colhidas 100 amostras de urina e de sangue de ovinos com idade superior ou igual a seis meses. As amostras de urina foram submetidas a PCR convencional e as amostras de sangue à técnica de IDGA. Das 100 amostras de sangue 17 (17%) foram reagentes ao teste de IDGA. Já na PCR convencional das 100 amostras de urina, seis (6%) foram positivas. Ressalta-se que três animais foram positivos em ambos os testes. Como fatores associados à infecção por B. ovis, observou-se o tipo de sistema de criação (OR=0,19), o manejo alimentar (OR=0,05), presença de partos distócicos (OR=4,50), abortamentos (OR=3,75) e a fonte de água fornecida aos animais (OR=0,19). Assim, conclui-se que foi possível detectar a ocorrência de animais com brucelose ovina, uma vez que a PCR é um método confirmatório. Além disso, há fatores de risco associados à infecção por B. ovis nos municípios estudados.

Produção in vivo de embriões caprinos e ovinos submetidos ao meio de manutenção ACP® / In vivo production of goat and sheep embryos submitted to the ACP® maintenance médium

The use of ACP® as a means of maintenance in the stages of multiple ovulation and embryo transfer, has not yet been reported in the literature, although ACP® is a plant fluid rich in nutrients. Thus, the objective was to compare the efficiency of ACP® as a substitute for embryo maintenance medium during MOTE biotechnology in goats and sheep. For this, three donor goats, Anglo-Nubian breed and three donor sheep, Dorper breed were used. Fifteen recipient females of each species were used. The donors were submitted to the superovulation protocol and inseminated, and later the embryos were collected. After harvesting, the embryos were submitted to the control maintenance medium, TQC Holding® or ACP® maintenance medium. The recipients were synchronized simultaneously with the donors, and after 30 days the pregnancy diagnosis was made. It was obtained 10% of pregnant in goats and 75% of pregnant in sheep, whose embryos were submitted to the ACP® maintenance medium before the innovation. It is concluded that the means of maintenance of ACP® embryos did not negatively influence the embryonic quality and the development of pregnancy in small ruminants.

Produção in vivo de embriões caprinos e ovinos submetidos ao meio de manutenção ACP® / In vivo production of goat and sheep embryos submitted to the ACP® maintenance médium

The use of ACP® as a means of maintenance in the stages of multiple ovulation and embryo transfer, has not yet been reported in the literature, although ACP® is a plant fluid rich in nutrients. Thus, the objective was to compare the efficiency of ACP® as a substitute for embryo maintenance medium during MOTE biotechnology in goats and sheep. For this, three donor goats, Anglo-Nubian breed and three donor sheep, Dorper breed were used. Fifteen recipient females of each species were used. The donors were submitted to the superovulation protocol and inseminated, and later the embryos were collected. After harvesting, the embryos were submitted to the control maintenance medium, TQC Holding® or ACP® maintenance medium. The recipients were synchronized simultaneously with the donors, and after 30 days the pregnancy diagnosis was made. It was obtained 10% of pregnant in goats and 75% of pregnant in sheep, whose embryos were submitted to the ACP® maintenance medium before the innovation. It is concluded that the means of maintenance of ACP® embryos did not negatively influence the embryonic quality and the development of pregnancy in small ruminants.(AU)

Seroprevalence of ovine brucellosis in the microregion of Teresina, Piauí, Brazil / Soroprevalência da brucelose ovina na microrregião de Teresina, Piauí

Among the diseases that affect the reproductive system of domestic animals, brucellosis in the sheep species is important because it generates significant economic losses to sheep rearing. Thus, it is a threat to the growth and productivity of sheep herds. In the face of this problem, the objective of the present research was to identify the prevalence of ovine brucellosis in herds in municipalities of the Teresina, Piauí, Brazil microregion by using the agar gel immunodiffusion assay (AGID) and indirect enzyme-linked immunosorbent assay (ELISA) serological tests. Fourteen municipalities were included in the research. Blood samples were collected from 521 pubescent animals by puncturing the jugular vein. After collection, the samples were submitted to the serological techniques, AGID and indirect ELISA, to detect anti B. ovis antibody. Of the 521 samples submitted to the AGIDtest, 23 (4.41%) were sera reagent and 498 (95.58%) negative. The indirect ELISA tests, 24 (4.61%) suspect samples and 497 (95.39%) negative samples were obtained, and there were no reagent animals in this test, only suspect. The seroprevalence of ovine brucellosis in the Teresina, Piauí microregion was 4.41%. Thus, it is possible to identify sheep with reagent serology to infection by B. ovis, that is present in municipalities in the state of Piauí, Brazil. Furthermore, AGIDwas shown to be more sensitive in detecting animals that had had contact with the etiological agent of the disease.(AU)

Dentre as enfermidades que acometem o sistema reprodutivo dos animais domésticos, a brucelose na espécie ovina tem se destacado por gerar prejuízos econômicos significativos à ovinocultura. Dessa forma, apresenta-se como uma ameaça ao crescimento e à produtividade dos rebanhos ovinos. Diante de tal problemática, objetivou-se, por meio desta pesquisa, identificar a prevalência de brucelose ovina em rebanhos pertencentes a municípios da microrregião de Teresina, Piauí, por meio dos testes sorológicos, imunodifusão em gel de ágar (IDGA) e ensaio imunoenzimático (ELISA) indireto. Quatorze municípios foram incluídos na pesquisa. Para sua execução, colheram-se, por punção venosa da jugular, amostras sanguíneas de 521 animais púberes. Após colheita, as amostras foram submetidas às técnicas sorológicas, IDGA e ELISA indireto, para a detecção de anticorpos anti-B. ovis. Das 521 amostras submetidas ao teste de IDGA, 23 (4,41%) foram sororreagentes e 498 (95,58%) negativas. Quanto ao teste ELISA indireto, obtiveram-se 24 (4,61%) amostras suspeitas e 497 (95,39%) amostras negativas, não havendo animais reagentes neste teste, apenas suspeitos. A soroprevalência da brucelose ovina na microrregião homogênea de Teresina, Piauí, foi de 4,41%. Assim, foi possível identificar ovinos com sorologia reagente à infecção por B. ovis, presente em municípios do estado do Piauí. Além disso, a IDGA mostrou-se mais sensível em detectar animais que tiveram contato com o agente etiológico da doença.(AU)

Seroprevalence of ovine brucellosis in the microregion of Teresina, Piauí, Brazil / Soroprevalência da brucelose ovina na microrregião de Teresina, Piauí

Among the diseases that affect the reproductive system of domestic animals, brucellosis in the sheep species is important because it generates significant economic losses to sheep rearing. Thus, it is a threat to the growth and productivity of sheep herds. In the face of this problem, the objective of the present research was to identify the prevalence of ovine brucellosis in herds in municipalities of the Teresina, Piauí, Brazil microregion by using the agar gel immunodiffusion assay (AGID) and indirect enzyme-linked immunosorbent assay (ELISA) serological tests. Fourteen municipalities were included in the research. Blood samples were collected from 521 pubescent animals by puncturing the jugular vein. After collection, the samples were submitted to the serological techniques, AGID and indirect ELISA, to detect anti B. ovis antibody. Of the 521 samples submitted to the AGIDtest, 23 (4.41%) were sera reagent and 498 (95.58%) negative. The indirect ELISA tests, 24 (4.61%) suspect samples and 497 (95.39%) negative samples were obtained, and there were no reagent animals in this test, only suspect. The seroprevalence of ovine brucellosis in the Teresina, Piauí microregion was 4.41%. Thus, it is possible to identify sheep with reagent serology to infection by B. ovis, that is present in municipalities in the state of Piauí, Brazil. Furthermore, AGIDwas shown to be more sensitive in detecting animals that had had contact with the etiological agent of the disease.(AU)

Dentre as enfermidades que acometem o sistema reprodutivo dos animais domésticos, a brucelose na espécie ovina tem se destacado por gerar prejuízos econômicos significativos à ovinocultura. Dessa forma, apresenta-se como uma ameaça ao crescimento e à produtividade dos rebanhos ovinos. Diante de tal problemática, objetivou-se, por meio desta pesquisa, identificar a prevalência de brucelose ovina em rebanhos pertencentes a municípios da microrregião de Teresina, Piauí, por meio dos testes sorológicos, imunodifusão em gel de ágar (IDGA) e ensaio imunoenzimático (ELISA) indireto. Quatorze municípios foram incluídos na pesquisa. Para sua execução, colheram-se, por punção venosa da jugular, amostras sanguíneas de 521 animais púberes. Após colheita, as amostras foram submetidas às técnicas sorológicas, IDGA e ELISA indireto, para a detecção de anticorpos anti-B. ovis. Das 521 amostras submetidas ao teste de IDGA, 23 (4,41%) foram sororreagentes e 498 (95,58%) negativas. Quanto ao teste ELISA indireto, obtiveram-se 24 (4,61%) amostras suspeitas e 497 (95,39%) amostras negativas, não havendo animais reagentes neste teste, apenas suspeitos. A soroprevalência da brucelose ovina na microrregião homogênea de Teresina, Piauí, foi de 4,41%. Assim, foi possível identificar ovinos com sorologia reagente à infecção por B. ovis, presente em municípios do estado do Piauí. Além disso, a IDGA mostrou-se mais sensível em detectar animais que tiveram contato com o agente etiológico da doença.(AU)

Detecção de Brucella ovis por reação em cadeia da polimerase (PCR) em amostras de urina de ovinos naturalmente infectados na microrregião de Teresina, PI / Brucella ovis detection by polymerase chain reaction (PCR) in naturally infected sheep urine samples in the micro region of Teresina, PI

Ovine Brucellosis is an infectious disease responsible for the production of reproductive disorders,triggering economic losses to sheep production. The researchs objective was detect B. ovis DNA in sheepsbelonging to cities in the micro region of Teresina-PI. Thus, were collected 100 urine and blood samples ofsheeps older than or equal to six months. Urine samples were subjected to conventional PCR and samples ofblood AGID technique. From 100 blood samples, 17 (17%) were reactive to AGID. In conventional PCR, from100 urine samples, six (6%) were positive. There was agreement between the tests, however, was consideredweak (18.9%), based on the Kappa coefficient ranking. Thus, it was observed that both techniques are valid and can be regarded as tools of choice for the diagnosis of ovine brucellosis.(AU)

Avaliação do estresse hipertérmico de ovelhas gestantes das raças Dorper, Santa Inês e suas mestiças em clima tropical com base nos níveis sorológicos de Triiodotironina (T3) e Tiroxina (T4 Total) / Evaluation of the stress head stress sheep pregnant of the breeds Dorper, Santa Inês and their mixed in a tropical climate based on the serological levels of Triiodotironina (T3) and Thyroxine (T4 Total)

The study objectify to evaluate the adaptability of pregnant sheep of the Dorper, Santa Ines and mixed(Dorper ½ ½ Santa Ines) to the tropical climate through serologic possible modifications of triiodothyronine(T3) and thyroxine (T4). The experiment was conducted at Malhada Vermelha farm in Lagoa Alegre - PI, 21sheep were used in gestational middle third, 7 of Dorper, 7 Santa Ines and 7 mixed (Dorper x Santa Ines), all insatisfactory clinical conditions and under the same management conditions. These were evaluated respiratoryrate, rectal temperature and collected blood samples for hormone dosage four times in each climatic periodMarch, July and October. Later they were measured Thyroxine (Total T4) and triiodothyronine (T3) by ELISA.T3 dosages remained within the normal range for the species, while T4 was below. It was concluded that themost adapted breed is Santa Ines.(AU)

Soroprevalência de anticorpos Anti-Brucella abortus em rebanhos bovinos da microrregião de Teresina, Piauí / Seroprevalence Anti-Brucella abortus antibodies in cattle herds in the microregion of Teresina, Piauí

The objective of this study is to estimate the prevalence in cattle herds of the micro-region of Teresina,state of Piauí. It was collected 406 serum samples from 14 herds, using as a screening technique buffered plateagglutination test (BPAT). Of the 406 samples, 15 (3.69%) responded to the BPAT, from the 14 herds studied,five showed at least one positive animal, given the prevalence of outbreaks of 35.7% (5/14). The results suggestthat the disease is widespread in herds and could trigger a spreading agent in the region, requiring thatprophylactic measures should be instituted by related official agencies, in maintaining the health of livestock.(AU)

Prevalência de anticorpos anti-Vírus da Diarréia Viral Bovina em bovinos da microrregião de Teresina, Estado do Piauí, Brasil / Prevalence of Bovine Viral Diarrhea Virus antibodies in cattle of the microregion of Teresina, Piauí State, Brazil

One of the most important diseases and therefore worth mentioning in cutting cattle and milk for causinggreat productive and reproductive losses and bovine viral diarrhea, infectious disease caused by the Flaviviridaefamily of viruses and pestiviruses Gender, this called Viral Diarrhoea Virus Bovina (BVDV). animals affected bythis disease are pathological changes in digestive, reproductive, respiratory, hematopoietic, and may developmucosal disease and severe immunosuppression. As a result of this work was to study the prevalence of anti-virusbovine viral diarrhea antibodies in cattle the Microregion of Teresina, state of Piaui, Brazil.(AU)

Avaliação das técnicas, imunodifusão em gel de agar (IDGA), ensaio imunoenzimático (ELISAi) e reação em cadeia da polimerase (PCR), para o diagnostico da brucelose ovina / Evaluation of technical, immunodiffusion agar gel (AGID), enzyme-linked immunosorbent assay (ELISAi) and polymerase chain reaction (PCR) for the diagnosis of ovine brucellosis

Brucellosis in sheep has received a major focus, since it is a disease that affects the reproductive systemof animals, causing serious impairment in the productive sector. Thus, three methods for the diagnosis of ovinebrucellosis were evaluated as goal, the indirect ELISA test, the AGID technique and the PCR. Therefore, weused 211 sheep blood samples arising from properties of nine municipalities of the homogeneous micro-regionof Teresina, Piaui. The 211 blood samples were subjected to the serologic testing and PCR to detect anti-B. ovisantibodies, and Brucella ovis DNA, respectively. Positive results in serological tests were obtained, 36 (17.06%)positive in the AGID test and seven (3.31%) positive to the ELISA test, however, there were no positive results inthe PCR technique. The use of the techniques for the diagnosis of B. ovis infection is satisfactory, but the choiceof blood as the biological sample for performing the direct diagnosis of ovine brucellosis is not recommended.(AU)

Taxa de fertilidade de ovelhas submetidas à inseminação artificial por via cervical e laparoscopia, no semi-árido do Piauí / Fertility rate of ewes submitted to artificial insemination by laparoscopy and cervical, on semi-arid in Piauí

There is various techniques of artificial insemination, but are not yet applied routinely in sheep. Thecervical insemination is quick and simple. Laparoscopy requires specialized technical and more work. artificialinsemination using simultaneous estrus synchronization provides higher productivity. This study aimed toobserve the pregnancy rate using frozen semen and techniques of different insemination after synchronization ofestrus. The experiment was conducted with thirty-seven animals. All subject to estrus synchronization protocol.Sixty days after insemination all underwent ultrasound for diagnosis of pregnancy. Twenty-five of the thirtysevenof the experiment showed pregnancy. The results demonstrated that cervical AI with frozen semen is agood alternative to using it routinely in sheep.(AU)

Influencia da concentração espermática sobre a Taxa de Fertilidade em Ovelhas Inseminadas com Sêmen congelado / Influences of sperm concentration on Fertility Rate in Sheep inseminated with frozen semen

The experiment compared the pregnancy rates in sheep submitted to IA, to evaluate the influence ofsperm concentration on fertility rate in sheep inseminated with frozen semen. In experiment run 37 females wereused, subject to synchronization of estrus and divided into two groups: G1 (n = 19), using artificial inseminationwith a concentration of 200 million viable spermatozoa and G2 (n = 18), using artificial insemination is at aconcentration of 100 million sperm. Pregnancy rates were 66.66% and 77.77% in sheep that were inseminatedwith the concentration 200 and 100 million sperm respectively transcervical and the sheep that have beeninseminated by laparoscopy at the same concentrations as pregnancy rates were 50% and 77.77% respectively.The concentrations used have shown - is quite effective when compared pregnancy rates in each group. Butneeds more in vivo studies.(AU)

Sensibilidade de cabras da raça Anglonubiana a infecção por verminose no periparto indicada pelo OPG / Sensibility of goat breed Anglo-Nubian infection by nematode parasites in peripartum indacated by OPG

The objective of this research was to evaluate the relationship of the infestation of gastrointestinalnematodes with the occurrence of peripartum in the angonubiana breed goats were divided into two age groups:Young goats <4 years old and Goats> 4 years. The set of information corresponds to the period from 2009 to2015 obtained from the Bank of UFPI the goat herd data, which is located in Teresina - PI. There was nosignificant difference in the samples taken during pregnancy (P > 0.05), although in the final third of the OPGtended to grow. Therefore, without significant evidence of peripartum express sensitivity of animals toparasitism. So in herd infected continues throughout the year tends to be little influence on the time of year in thegoat parasitism degree during pregnancy and lactation, regardless of age. However, does not imply inattentioncurative measures in the peripartum.(AU)

Influência do nível de infestação parasitaria da cabra sobre o desempenho da cria durante a fase de lactação / Parasitic infestation level of influence of goat on the performance of the offspring during lactation phase

In goat gastrointestinal parasitism is a major limitation of production. In this perspective analyzed tocharacterize the phenotypic variability of gastrointestinal parasitism resistance and associated with productiveand reproductive performance of the arrays. The goats were divided into two groups, where in a goats werelactating and the other in the breeding season, which was made measurements according to the physiologicalstage of the goats. It was concluded that the herd is presented with continuous infestation by worms in the studyperiod and no group stood out from the others in the analyzed characteristics.(AU)

Prevalência de anticorpos anti-Vírus da Diarréia Viral Bovina em bovinos da microrregião de Teresina, Estado do Piauí, Brasil / Prevalence of Bovine Viral Diarrhea Virus antibodies in cattle of the microregion of Teresina, Piauí State, Brazil

One of the most important diseases and therefore worth mentioning in cutting cattle and milk for causinggreat productive and reproductive losses and bovine viral diarrhea, infectious disease caused by the Flaviviridaefamily of viruses and pestiviruses Gender, this called Viral Diarrhoea Virus Bovina (BVDV). animals affected bythis disease are pathological changes in digestive, reproductive, respiratory, hematopoietic, and may developmucosal disease and severe immunosuppression. As a result of this work was to study the prevalence of anti-virusbovine viral diarrhea antibodies in cattle the Microregion of Teresina, state of Piaui, Brazil.

Soroprevalência de anticorpos Anti-Brucella abortus em rebanhos bovinos da microrregião de Teresina, Piauí / Seroprevalence Anti-Brucella abortus antibodies in cattle herds in the microregion of Teresina, Piauí

The objective of this study is to estimate the prevalence in cattle herds of the micro-region of Teresina,state of Piauí. It was collected 406 serum samples from 14 herds, using as a screening technique buffered plateagglutination test (BPAT). Of the 406 samples, 15 (3.69%) responded to the BPAT, from the 14 herds studied,five showed at least one positive animal, given the prevalence of outbreaks of 35.7% (5/14). The results suggestthat the disease is widespread in herds and could trigger a spreading agent in the region, requiring thatprophylactic measures should be instituted by related official agencies, in maintaining the health of livestock.

Avaliação das técnicas, imunodifusão em gel de agar (IDGA), ensaio imunoenzimático (ELISAi) e reação em cadeia da polimerase (PCR), para o diagnostico da brucelose ovina / Evaluation of technical, immunodiffusion agar gel (AGID), enzyme-linked immunosorbent assay (ELISAi) and polymerase chain reaction (PCR) for the diagnosis of ovine brucellosis

Brucellosis in sheep has received a major focus, since it is a disease that affects the reproductive systemof animals, causing serious impairment in the productive sector. Thus, three methods for the diagnosis of ovinebrucellosis were evaluated as goal, the indirect ELISA test, the AGID technique and the PCR. Therefore, weused 211 sheep blood samples arising from properties of nine municipalities of the homogeneous micro-regionof Teresina, Piaui. The 211 blood samples were subjected to the serologic testing and PCR to detect anti-B. ovisantibodies, and Brucella ovis DNA, respectively. Positive results in serological tests were obtained, 36 (17.06%)positive in the AGID test and seven (3.31%) positive to the ELISA test, however, there were no positive results inthe PCR technique. The use of the techniques for the diagnosis of B. ovis infection is satisfactory, but the choiceof blood as the biological sample for performing the direct diagnosis of ovine brucellosis is not recommended.

Avaliação do estresse hipertérmico de ovelhas gestantes das raças Dorper, Santa Inês e suas mestiças em clima tropical com base nos níveis sorológicos de Triiodotironina (T3) e Tiroxina (T4 Total) / Evaluation of the stress head stress sheep pregnant of the breeds Dorper, Santa Inês and their mixed in a tropical climate based on the serological levels of Triiodotironina (T3) and Thyroxine (T4 Total)

The study objectify to evaluate the adaptability of pregnant sheep of the Dorper, Santa Ines and mixed(Dorper ½ ½ Santa Ines) to the tropical climate through serologic possible modifications of triiodothyronine(T3) and thyroxine (T4). The experiment was conducted at Malhada Vermelha farm in Lagoa Alegre - PI, 21sheep were used in gestational middle third, 7 of Dorper, 7 Santa Ines and 7 mixed (Dorper x Santa Ines), all insatisfactory clinical conditions and under the same management conditions. These were evaluated respiratoryrate, rectal temperature and collected blood samples for hormone dosage four times in each climatic periodMarch, July and October. Later they were measured Thyroxine (Total T4) and triiodothyronine (T3) by ELISA.T3 dosages remained within the normal range for the species, while T4 was below. It was concluded that themost adapted breed is Santa Ines.