50 documents found, page 1 of 5
Yield evaluation of guar genotypes (Cyamopsis tetragonoloba L. Taub.) selected ...
Reis, C.M.G.; Almeida, C.A.M.; Peças, Luís Filipe Velez; Almeida, J.P.F.Guar (Cyamopsis tetragonoloba) is an annual and self-pollinated crop with a spring-summer cycle that belongs to Fabaceae family. Guar has been assuming increasing importance among agro-industrial crops due to the high galactomannan content of its seeds. Fifteen unbranched genotypes selected for a high-density planting and mechanical harvesting were evaluated for agronomic and yield traits. Ten morphological tra...
Estudo do efeito de diferentes regimes de temperatura na germinação da semente ...
Reis, C.M.G.; Almeida, C.A.M.; Peças, Luís Filipe Velez; Almeida, J.P.F.
Production and nutritional composition of two annual ryegrass cultivars (Diploi...
Rodrigues, A.M.; Veloso, Abel; Vaz, Edgar Santa Rita; Almeida, J.P.F.The feed cost represents the major cost in milk production. Direct grazing and forage produced on the dairy farm could allow the farmer to a better feed production cost control. Ryegrass have been extensively used for grazing and forage production. This study evaluates the production and nutritional composition of two ryegrass cultivars diploid and tetraploid alone or in a binary mixture (50:50). The results sh...
Sistemas extensivos de pastoreio: estimativa das emissões de metano e do balanç...
Almeida, J.P.F.O controlo das emissões de gases com efeito de estufa (GEE) é uma prioridade em todos os países da União Europeia. As pastagens, como ecossistema, têm a capacidade de sequestrar o CO2 da atmosfera. Porém, a sua eficiência depende de algumas variáveis, nomeadamente a fermentação entérica dos animais em pastoreio, que liberta metano para a atmosfera. Para avaliarmos a importância dessa causa, estimámos as assimil...
Feeding value of Portuguese Mediterranean annual-type rainfed pastures
Almeida, J.P.F.; Andrade, C.S.C.R.; Rodrigues, A.M.
Optimization of Mediterranean Rainfed Pasture Systems in Portuguese Conditions,...
Almeida, J.P.F.; Canavarro, M.C.; Alberto, D.; Andrade, C.S.C.R.; Rodrigues, A.M.
Production, nutritive and feeding value of Portuguese Mediterranean annual type...
Almeida, J.P.F.; Andrade, C.S.C.R.; Rodrigues, A.M.Subterranean clover pastures (SC) have a higher nutritive value than Portuguese natural pastures (NP). However, this assumption does not include anti - quality factors and potential intake (determined by stocking rates - SR). Therefore, we tested the hypothesis that advantages of SC over NP are different if we consider feeding value (FV=nutritive value x intake x SR) instead nutritive value (NV) alone. Producti...
Portuguese annual mediterranean pastures: an eonomic approach to understand sow...
Almeida, J.P.F.; Alberto, D.; Maçãs, B.M.After Portugal joined the ECC, in 1986, huge land use changes occurred: cereal crops área was strongly reduced; native pastures (low productive) área sharply increased (2.1 fold); sown pastures (hhigh productive legumes and grasses mixtures) area remain unchnaged. Thus, pasture production potencial is far from fulfilled.Farmers resits sowing improved cultivars, arguing their low persistency. Therefore we tested...
A avaliação morfológica e o melhoramento do cavalo Lusitano
Almeida, J.P.F.A avaliação morfológica e o melhoramento do cavalo Lusitano
Environmental impact of outdoor pig production : soil P forms evolution, spatia...
Monteiro, M.C.H.; Batista, Marta; Roque, Natália; Almeida, J.P.F.When compared with intensive indoor production, outdoor pig production is considered by consumers as the production system that causes the least negative environmental effects and contributes to animal welfare. Nevertheless, the continuous input of nutrients in food or pig excretions, increases soil nutrients levels, as is the case with phosphorus (P). This continuous soil P input may exceed soil retention capa...