Effect of shade and water sprinkling on physiological responses and milk yields of Holstein cows in a semi-arid region

The effects of shading and water sprinkling on physiological responses and milk production were studied in Holstein cows managed in an equatorial semi-arid region. Five cows were observed for 36 days during May and June 2009. We studied the effects of sun, shade, shade plus single sprinkling, shade plus sprinkling every 2. h and shade plus sprinkling every hour on physiological responses, i.e., rectal temperature, coat surface temperature and respiratory rate, and on milk production. Environmental variables, i.e., air temperature, black globe temperature, mean radiant temperature, relative humidity and wind speed, were recorded every 30. min throughout the observation period. The statistical analysis utilized a 5×5 replicated latin square, and the results showed reduced values in physiological variables in cows that were protected from short wave radiation and that received water sprinkling; milk yield increased by approximately 3.5. kg in such animals relative to those not receiving such treatment. However, the milk yield for the morning milking presented similar mean values regardless of whether the animals received shading and sprinkling benefits, which indicates that frequency of sprinkling and amount of time (permanence) in the shade were critical for the effect on milk yield. © 2013 Elsevier B.V.

Epidemiological Survey of Equine Pythiosis in the Brazilian Pantanal and Nearby Areas: Results of 76 Cases

A clinical epidemiological study was conducted among 34 rural properties located within the Brazilian Pantanal region and nearby areas between 2007 and 2010. The diagnosis of equine pythiosis was based on antibody detection (by enzyme-linked immunosorbent assay), polymerase chain reaction, histopathological analysis, and cultures positive for Pythium insidiosum. The majority of the affected animals (85%) were in the Pantanal biome, which had a higher disease prevalence (0.9%-66.7%) than that of the Cerrado (2.7%-33.3%). The disease was more prevalent in the rainy season (January-March), with an abrupt fall in the number of cases during the drought period (April-September; correlation of R 2 = 0.77; P < .01). Generally, the average prevalence of equine pythiosis in both regions was 5%, with mortality and lethality rates of 1.3% and 23.1%, respectively, in the Pantanal and 2.3% and 45.5%, respectively, in the Cerrado. However, the treatment with immunotherapy may have underestimated these numbers, especially in the Pantanal. Animals older than 1 year were 8.09 times more affected by the disease than younger animals in the same environment (P < .05). A correlation between the anatomical area of the lesion and the type of skin color was also observed. Approximately 73% of the lesions were found in dark-pigmented areas, and animals with a dark coat color were affected more frequently. These findings highlight the importance of hematophagous insects in the epidemiology of pythiosis because these areas are preferred for blood feeding. © 2013 Elsevier Inc. All rights reserved.

Teste de envelhecimento acelerado em sementes de ervilha forrageira

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Dano por embebição em sementes de soja em função do teor de água inicial, cultivar e local de produção

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Efeito da radiação solar e temperatura na emissão de metano associado à produção e perda de calor em bovinos

Pós-graduação em Zootecnia - FCAV

Avaliação de maçã Royal Gala revestida com filme de quitosana durante o período de pós-colheita

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Morfologia, ultraestrutura e morfometria do tegumento da paca (Cuniculus paca)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estabelecimento e superação de dormência em sementes de Erythrina speciosa Andrews

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação da resposta imune celular de sangue periférico e medula óssea pela técnica de imunocitoquímica em cães vacinados para Leishmaniose visceral canina

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Complementação do seqüenciamento do genoma do Southern bean mosaic virus, isolado São Paulo, expressão da porção C-terminal da polimerase e produção de anti-soro policlonal

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Caracterização molecular parcial e localização subcelular de um isolado brasileiro do vírus do mosaico do feijoeiro do sul dos E.U.A

Pós-graduação em Genética - IBILCE

Estimativas de parâmetros genéticos para escores de avaliação visual, peso e perímetro escrotal à desmama de bovinos da raça Canchim

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Proteína capsidial do Rupestris stem pitting-associated vírus: seqüenciamento do gene, expressão em Escherichia coli, purificação e produção de anti-soro policlonal

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Morfoanatomia e ontogênese de frutos e sementes de três espécies de Chamaecrista moench (Fabaceae, Caesalpinioideae) de cerrado do Estado de São Paulo

Pós-graduação em Ciências Biológicas (Botânica) - IBB

Bandas militares no Brasil: difusão e organização entre 1808-1889

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)