|
|
|
|
|
| Paixão,Marcel Gomes; Souza,Guilherme Nunes de; Lopes,Marcos Aurélio; Costa,Geraldo Márcio da; Abreu,Luiz Ronaldo de; Pinto,Sandra Maria. |
| The purpose of this survey was to evaluate the socioeconomic and technical assistance profiles of dairy farmers from six districts in the south of Minas Gerais state, Brazil, and to identify the possible risk factors associated with total milk bacteria count (TBC) above 43,000 CFU mL-1 and bulk milk somatic cell count (BMSCC) above 595,000 cells mL-1. Most of the producers were between 41 and 60 years of age (48.9%), 74.2% did not reach high school, and 72.3% of the respondents were satisfied with their profession, although 63% would not recommend dairy farming to their children. Only 34.7% used periodic technical assistance, but 59.1% consulted it in cases of doubt. The risk factors found in the final multivariable regression models were: TBC (Did not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cultural level; Livestock; Risk factors; Milk quality.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000701241 |
| |
|
| |
|
|
| Gindri,Patrícia Carvalho; Mion,Bruna; Pradieé,Jorgea; Bialves,Tatiane Senna; Souza,Guilherme Nunes de; Dellagostin,Odir Antônio; Schneider,Augusto; Pegoraro,Lígia Margareth Cantarelli. |
| ABSTRACT: The aim of this study was to estimate neosporosis seroprevalence and its associated risk factors in milk herds (Bos taurus taurus) located in the northwestern region of Rio Grande do Sul State, Brazil. Three hundred twenty-two blood samples were collected from dairy cows on 18 farms in 17 cities of this region. An epidemiologic questionnaire was completed for each farm. It consisted of questions about the general characteristics of the herd, reproduction, and animal management. Serum samples were tested for Neospora caninum using a commercial enzyme-linked immunosorbent assay (ELISA) kit. Results indicated a seroprevalence of Neospora in 88.9% (16/18) of herds and 31.1% (100/322) of individuals. Risk factor analyses demonstrated that culling by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Neospora caninum; Reproductive diseases. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000700500 |
| |
|
|
| Consalter,Angélica; Zanella,Eraldo Lourenso; Martins,Gabriel Mendes de Souza; Araujo,Hugo Libonati de; Lilenbaum,Walter; Souza,Guilherme Nunes de; Ferreira,Ana Maria Reis. |
| ABSTRACT: Leptospirosis is a zoonosis that is widely distributed in tropical countries. This infection is also associated with reproductive losses in livestock, which has a significant economic impact. The objective of this study is to investigate the seroprevalence and risk factors associated with leptospiral infection in commercial sheep flocks from the northwestern mesoregion of Rio Grande do Sul. Serum samples were analyzed in 319 sheep using the Microscopic Agglutination Test (MAT). At the time of sampling, an individual and herd questionnaire was carried out to investigate the risk factors. On an individual level, positive reactions were observed in 5.6% (18/319) of the studied sera, with Sejroe being the most prevalent serogroup. Animals >3 years... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leptospira spp.; Sheep; MAT; Seroprevalence.. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001200451 |
| |
|
|
| Arashiro,Eduardo Kenji Nunes; Libonati,Hugo; Santos,Gustavo Bervian dos; Nogueira,Luiz Altamiro Garcia; Souza,Guilherme Nunes de; Lilenbaum,Walter; Brandão,Felipe Zandonadi. |
| ABSTRACT: Reproductive efficiency is one of the key elements for any milk production system to be successful. In this regard, reproductive management must be planned properly and the identification of the main reproductive disorders that affect the herd is primordial for decision-making. The aim of the present study was to identify the main reproductive problems that affect dairy herds on Rio de Janeiro (RJ), Brazil. Data regarding breed, age, reproductive disorder occurrence, and breeding system were individually collected from dairy cows raised at 25 farms located at RJ. The occurrence of reproductive disorders was reported in 37% of the studied animals. Estrous repetition (76.2%) and abortion (15.6%) were the most frequent reproductive problems... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dairy cattle; Reproductive disorders; Repeat breeding. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700701 |
| |
|
|
| Lopes Júnior,João Emídio Ferreira; Lange,Carla Cristine; Brito,Maria Aparecida Vasconcelos Paiva; Santos,Fabiana Ribeiro; Silva,Marco Aurélio Souto; Moraes,Luciano Castro Dutra de; Souza,Guilherme Nunes de. |
| This study was conducted to establish the relationship between somatic cell count (SCC) and bacterial shedding from mammary quarters according to mastitis pathogens. Milk samples from 638 mammary quarters were examined for mastitis pathogens, SCC and total bacterial count (TBC). The raw data of SCC and TBC were used to perform descriptive statistics. The significance of the arithmetic mean differences between SCC and TBC according to bacteriological examination results was determined by a two-tailed unpaired t-test. Pearson and Spearman´s correlations were done with logarithmic data and linear regression analyses. The geometric means of the bacteriological examination results were (cells mL-1; CFU mL-1): no growth (52,000; 12,000), coagulase-negative... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mastitis pathogens; Somatic cell count; Bacteria shedding. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000400019 |
| |
|
|
| Cruz,Astrid Paola Mattheis; Aquino,Maria Helena Consedey de; Helayael,Michel José Sales Abdalla; Silva,Márcio Roberto; Ribeiro,João Batista; Hott,Marcos Cicarini; Magalhães Júnior,Walter Coelho Pereira de; Mendonça,Juliana França Monteiro de; Souza,Guilherme Nunes de. |
| ABSTRACT: Equine infectious anaemia (EIA) is a globally distributed disease caused by a lentivirus. EIA is a notifiable disease that should be reported to the Official Veterinary Service (SVO). Outbreaks are controlled by sacrificing the EIA-positive animals. The study analysed the prevalence of EIA in 165 Equidae seized on public roads in the municipality of Petrópolis, Rio de Janeiro, Brazil, from 2015 to 2018. After the seizure and identification of the Equidae, blood was collected to diagnose EIA. A prevalence of 11.8% was observed among the Equidae seized, and the main risk factor was the region of seizure. A kernel-smoothed map showed areas with the highest density of EIA-positive Equidae in the centre and to the east of the study area. In this... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Equine; Spatial distribution; Infectious diseases. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000400452 |
| |
|
|
|
