A5041307276- Effects of Environmental Stressors on Livestock
- Genetic and phenotypic traits in livestock
- Rural Development and Agriculture
- Animal Behavior and Welfare Studies
- Thermoregulation and physiological responses
- Agriculture Sustainability and Environmental Impact
- Milk Quality and Mastitis in Dairy Cows
- Heat Transfer Mechanisms
- Reproductive Physiology in Livestock
- Agricultural and Food Sciences
- Livestock Management and Performance Improvement
- Urban Heat Island Mitigation
- Meat and Animal Product Quality
- Environmental and biological studies
- Geography and Environmental Studies
- Climate Change and Health Impacts
- Business and Management Studies
- Sustainable Agricultural Systems Analysis
- Digestive system and related health
- Agriculture and Rural Development Research
- Species Distribution and Climate Change
- Agriculture, Water, and Health
- Crop Yield and Soil Fertility
- Regulation of Appetite and Obesity
- Academic Research in Diverse Fields
Universidade Federal do Rio Grande do Norte
2009-2023
Vodafone (Portugal)
2015
Centro Científico Tecnológico - Nordeste
2015
Institute of Animal Science and Pastures
1988-2014
Universidade Federal de Minas Gerais
1999
University of Reading
1997
Data from 359 Holstein and 54 Jersey cows (total of 1359 observations) collected in commercial herds the northeast Brazil were used to evaluate six environmental stress indexes. The selection criterion was correlation between index value with rectal temperature (RT) respiratory rate (RR) cows. Both Temperature-Humidity Index (THI) Black Globe-Humidity (BGHI) had lowest correlations animal RT RR. selected indexes Equivalent Temperature (r = 0.293 0.520 RR, respectively) Heat Load (0.286...
A adaptação dos animais ao ambiente criatório é essencial para o êxito de qualquer empreendimento pecuário. No Brasil, há algumas décadas, foram importadas inúmeras raças, oriundas clima temperado, das mais diversas espécies produção, cujas progênies eram avaliadas e selecionadas em consideração apenas aspectos produtivos. Nos últimos dez anos, verificou-se que tanto criadores, como a comunidade acadêmica, despertaram valorização adaptativos, selecionarem serem criados nos diversos biomas...
Este trabalho foi conduzido com o objetivo de estudar comportamento anual características termorreguladoras 200 vacas leiteiras. Durante dois anos consecutivos, foram registradas a freqüência respiratória (FR) e temperatura retal (TR), bem como coletada uma amostra sangue para dosagens triiodotironina (T3) tiroxina (T4). Foram também umidade do ar calculados índice globo (ITGU) carga térmica radiante (CTR), nos mesmos dias coleta. Houve efeito significativo ano maioria das variáveis...
This work aimed to study the annual variation of temperature coat surface and other traits in Holstein cows managed a tropical environment by separately considering black white coat. It was measured thickness (mm) characteristic, hair length (mm), number (hair/cm²) on 191 crossbred with 7/8 31/32 composition distributed 3 herds semi-arid environment. Less dense coats shorter, flattened occurred predominantly March, time coinciding high levels solar radiation. type shows low resistance flux...
Semi-arid conditions can adversely affect livestock productivity and change certain physiological parameters. The relationship between hair coat thyroxine levels in Morada Nova ewes was evaluated through environmental factors, such as air temperature, relative humidity, radiant Black Globe Humidity Index to gain a better understanding of thermoregulation mechanisms these animals. Measurements were taken from July January 383 ewes. variables studied included rectal temperature (RT),...
Mozzarella cheese is typically from Otaly and consumed in the whole world.The aim of this study was to characterize manufacture produced similarly Otalian a Brazilian dairy industry regarding milk composition usage, factors involved production process, use raw materials yield.Was monitored yield (MY), composition, manufacturing recovery whey constituents 30 lots brazilian industry.Dverall, processing reached an adequate MY for type cheese, being below 5.0 L kg -1 .We find values 5. 93 ±...
Esta pesquisa foi realizada com o objetivo de se avaliar comportamento caracteristicas termorreguladoras caprinos, ovinos e bovinos durante os periodos seco chuvoso correlacionar variaveis meteorologicas registradas ao longo do ano em ambiente semi-arido. Foram utilizadas dez cabras ovelhas “sem padrao racial definido” (SPRD), alem vacas mesticas Holandes. A temperatura retal (TR), frequencia respiratoria (FR) a taxa sudacao (TS) dos animais foram medidas cada 15 dias, 9 h h, meses abril...
Objetivou-se neste estudo caracterizar os sistemas de produção leite bovino instalados na região Semiárida Potiguar, baseado nos aspectos sociais, econômicos e zootécnicos, visando contribuir manutenção aprimoramento da atividade leiteira região. Foram selecionados, aleatoriamente, 28 estabelecimentos agropecuários que desempenhavam a bovinocultura com posterior aplicação questionário estruturado, durante meses setembro outubro 2011 dados analisados medidas análise descritiva. Os resultados...
This study aimed to evaluate the costs of production, revenue and profitability six milk production systems in Paraíba State, Brazil identify major variables related final cost through economic results indicators performance. In order carry out analysis, farmers were grouped into two clusters, depending on link a cooperative, i.e., members non-members. The gross was sufficient cover total operating farms 1, 2, 3 5. items that make up operational accounted for percentages above 60% all these...
This study is aimed to evaluate the physiological responses and production of milk cows Holstein breed, pure, in dry rainy seasons. During period from March October rectal temperature (TR), respiratory rate (FR) (PL) were taken at 7 am 3 pm twice a week, eleven cows. At same time, these there also recorded temperatures air black globe, humidity it was calculated Globe Humidity Temperature Index (ITGU). Statistical analyzes performed by method least squares this revealed significant effects...
This study aimed to characterize the production systems of bovine milk in Cariri region Paraíba State using cluster and main component analyses. Information on producers (n=100) from towns Caturité Barra de Santana were collected by means a questionnaire comprised five groups quantitative variables, totlaing 16 questions. The first four components explained 75.56% total variation. existence three with regard studied variables was verified. Groups I, II III 9, 28 63 producers, respectively....
Tropical ewes of the Morada Nova breed were used to evaluate concordance on effects body condition score (BCS) and age classification using canonical discriminant analysis (CDA) as method. The dependent variables in this study were: physiological responses, thyroid hormones, hematological biochemical parameters. hypothesis was that effect BCS might explain changes serum parameters; however, very little observed. Only responses hormones presented a subtle change effect. An elevated error rate...
Compararam-se os custos de seis esquemas controle leiteiro (CL), estabelecidos com base em diferentes freqüências controles (com possibilidade trimestral supervisionado e aproveitamento do CL da fazenda), no número ordenhas na realização análises qualitativas (composição leite e/ou contagem células somáticas). Computaram-se percentuais que totais representariam receita bruta mensal (CL/RB) líquida (CL/RL). O esquema tradicional (freqüência mensal) apresentou o mais elevado custo maiores...