R ESU M OEste estudo objetivou avaliar o desenvolvimento e teores de macronutrientes presentes no milheto e no sorgo Sudão, em resposta à aplicação de doses de soro de leite ao solo. O experimento foi conduzido com solo em vasos com capacidade de 8 dm 3 em ambiente protegido utilizando-se delineamento inteiramente casualizado em arranjo fatorial 2 (aplicação única e parcelada) × 5 (doses de soro) com quatro repetições. As doses foram equivalentes a: 0, 167, 333, 667 e 1000 m 3 ha -1 de soro de leite, determinadas com base no teor de K. O soro foi aplicado em dose única, 10 dias antes da semeadura e em dose parcelada (50% 10 dias antes da semeadura e 50% 20 dias após a emergência das plantas). Após 42 dias realizou-se a colheita e se determinaram altura e massa seca da parte aérea. A trituração da massa seca foi realizada para o preparo de extratos, com vista às determinações analíticas dos nutrientes, P, Na, K, Ca e Mg. Os resultados mostraram que para produção de massa seca no manejo de aplicação dose única ocorreu, a partir da dose equivalente a 667 m 3 ha -1 de soro de leite, diminuição na produção, em ambas as culturas, enquanto para a aplicação parcelada a redução se deu a partir da dose 167 m 3 ha -1 . Palavras chave: água residuária, forragem, Pennisetum glaucum, Sorghum bicolorProductivity and mineral nutrients in millet and Sudan grass fertilized with whey A B ST R A C T The objective of this study was to evaluate the development and levels of macronutrients present in millet and sudan grass in response to fertilization of the soil with whey. The experiment was carried out under greenhouse using 8 dm 3 pots, in a completely randomized design with a 2 (partitioned and total application) × 5 (doses of whey) factorial arrangement with four replications. The doses were equivalent to 0, 167, 333, 667 and 1000 m 3 ha -1 of whey and were determined based on the amount of K + in the whey. The whey was applied in total 10 days before sowing and in split doses (50% 10 days before sowing and 50% 20 days after emergence of the seedlings). Plants were harvested after 42 days and the dry weight and shoot height were determined. Plant dry mass was ground to prepare extracts for determination of the nutrients: P, Na, K, Ca and Mg. Production of dry matter in both species started to decrease from 667 m 3 ha -1 of whey in total application, whereas in partitioned application the reduction in dry matter yield began from 167 m 3 ha -1 in both crops.
The objective of this research was to analyze the differences between the food behaviors observed under the factors of production environment, sex and lighting system, using stochastic tools of multivariate analysis. As for the thermal characteristics of the environment, air temperature (T, °C), enthalpy (H, kJ kg -1 ), and black globe temperature and humidity index (BGTHI) showed high positive correlation with each other and strong negative correlation with relative humidity (RH, %). The "male drinking" behavior was positively associated with thermal characteristics of the environment in the three periods of the day, that is, the act of drinking more water would be a way to alleviate thermal stress. Birds subjected to red LED showed a strong negative correlation with temperature associated with the "female drinking" behavior, in the afternoon period, according to the principal component analysis, which is justified by the orientation of the broiler house with its longitudinal axis in the NE/SW direction, so the sunlight directly hits the area where the drinker was located. Variation in body weight showed better response when the birds were exposed to a temperature of 27 °C, for the 5 th week of the rearing cycle.
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