Adriana Garcia do Amaral

Efeito do ambiente de produção sobre frangos de corte sexados criados em galpão comercial

The effect of the production environment on the productive performance and physiological responses of sexed broiler chickens, male and female, was evaluated. The birds were raised in two separate regions inside the broiler house. The productive environment was determined using the black-globe temperature humidity index, as well as noise and luminance levels. The physiological responses (breath rate, rectal temperature, skin temperature and feather temperature) and productive responses (weekly weight gain, body mass and mortality) were used to evaluate the effect of the production environment on the broilers raised in a house equipped with conventional and misting ventilation systems. The mean body mass of the males was 214.6 g greater than females at 35 days of life, which became equal to the male mean body mass only at 38.47 days of life. The physiological responses were not related to the environment.

Caracterização espacial do ambiente termoacústico e de iluminância em galpão comercial para criação de frangos de corte

The goal of this study was to evaluate and map the thermo-acoustic and the luminance variables inside of a commercial broiler chicken house equipped with conventional ventilation and misting system. Hybro breed broiler chickens were lodged in three regions (refuse, female and male), at a density of approximately 20 birds m-2. The productive environment was evaluated by the black-globe humidity index, relative humidity, air velocity, noise level and luminance. Spatial distribution maps of these variables were generated inside the broiler house using the kriging method. Based on the results, it was concluded that, in general, broiler chickens were subjected to inadequate environmental conditions during the hottest period of the day; however, the exploration potential for using evaporative cooling systems was verified. The spatial profile of the variables related to the productive environment provide for the attainment of more detailed information about the studied system.

Características físico-químicas e nutricionais de pimentão produzido em campo e hidroponia

The objective of this work was to evaluate the physicochemical characteristics and proximate composition of bell pepper cultivars stored in natural ambient conditions (temperature of 21 ± 2 °C and relative humidity of 70 ± 5%). The experiment was carried out using a completely randomized design, with four types of bell peppers (Paloma and Impacto produced through a hydroponic production system; Paloma and Magali produced in the field) and six analysis periods, with three repetitions. The cultivars Paloma produced in the field and hydroponic Impacto presented the greatest mass. The highest moisture and lowest crude fiber contents were obtained for Paloma cultivar, and the highest protein and carbohydrate contents, for Magali cultivar. Soluble solids were higher in Magali produced in the field. Moisture was not influenced by the treatments (field or hydroponic) and storage. During the 12 days of storage, all treatments presented high values of vitamin C, being higher in hydroponic Impacto and lower in Magali from the field. Mass loss reached 14.11% at 12 days of storage, which was considered the limiting period for bell pepper storage. Paloma and Impacto cultivars can be recommended for cultivation.