O objetivo do experimento foi avaliar o efeito de diferentes doses de N na produção de massa seca do capim Mombaça (Panicum maximum Jacq.), na conversão do nitrogênio e concentração desse nutriente no tecido da planta. Foram testadas quatro doses de N (70, 140, 210 e 280 kg/ha/ano), utilizando uréia como fonte do nutriente. O período da avaliação foi de novembro de 2002 a abril de 2003, sendo realizados seis cortes a cada 28 dias, a 30 cm do solo. O delineamento experimental utilizado foi de blocos casualizados, em esquema de parcelas subdivididas no tempo, com oito repetições, utilizando o teste de Scott-Knott para comparação das médias. A maior produção de massa seca foi obtida com a aplicação de 280 kg de N/ha. As maiores eficiências da conversão do nitrogênio foram verificadas com a aplicação das doses mais baixas de N.
Este documento visa discutir as problemáticas da distribuição e exibição dos filmes nacionais, tal como a dificuldade do acesso à cultura cinematográfica brasileira, histórico das leis de incentivo e seu fundamental impulso no cinema nacional, a homogenia dos filmes norte-americanos e analisar as salas independente de cinema Cine UFPEL como possível formador de público local e uma janela alternativa em potencial.
Nutritional status of temperate crossbred dairy cows at post-partum transition, early-lactation and mid-lactation stages of a medium-scale farm in mid-country was assessed through serum metabolic profile. Body weight, body condition score and milk production of cows were recorded. Cows were bled and serum was analyzed for nonesterified fatty acids (NEFA), beta-hydroxybutyrate (BHBA), urea, albumin, calcium and phosphorous contents. Levels of metabolites were compared with respective critical limits of the reference ranges proposed to assess the state of energy balance. Weight and body condition score of cows at different physiological stages were compared. Nutrient and energy content of the forage and concentrate mixed ration of the cows were analyzed. Requirement and intake of crude protein and metabolizable energy were computed. Serum NEFA content of cows at post-partum transition, early-lactation and mid-lactation, nonpregnant stages exceeded the upper critical limit of the reference range, indicating that temperate crossbred cows managed in the mid-country suffer from negative energy balance. The low level of serum BHBA recorded at all stages of lactating cows suggested that they have adapted for the state of negative energy balance. Serum urea content of the lactating cows exceeded the upper critical limit of the reference range due to the feeding of energy protein imbalanced ration. Adopting an energy protein balanced feeding programme is warranted to optimize the productivity while minimizing incidence of metabolic disorders in temperate crossbred dairy cows.
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