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Articles by Irenilza de Alencar Naas
Total Records ( 2 ) for Irenilza de Alencar Naas
  Dayane Lilian Pires Iglesias , Sarah Sgavioli , Euclides Braga Malheiros , Rodrigo Garofallo Garcia , Luiz Gustavo Rombola , Fabiana Ribeiro Caldara , Irenilza de Alencar Naas and Isabel Cristina Boleli
  The duration of pre-housing fasting may determine the chick’s weight loss, impairing their performance during the rearing. Management’s practices to minimize the effect of this fast are extremely important to the success of broilers rearing. The aim of this study was to check if the ascorbic acid injection (AA) in egg avoids or minimizes the effects of pre-housing fasting in broilers chicks. Fertile Cobb® broiler eggs from hens at 29 weeks of age were used. The experimental design was completely randomized in a factorial arrangement 2 × 4 × 2, and two sex (males and females), with 4 treatments (non-injected eggs and chicks submitted to fasting; not injected eggs and chicks fed with water and feed ad libitum; eggs injected with 1 μg de AA/150 μL of water and chicks submitted to fasting; eggs injected with 3 μg de AA/150 μL of water and chicks submitted to fasting) with 2 different ages (48 and 72 h after hatching). Eggs injected with 1 mg of AA preincubation has increased the hatching by 14.2% avoiding the negative effect of fasting on the weights of the chicks till 48 h after hatching, however, feed intake after this period of fasting is critical, independent of the AA injection, the association of AA injection and feed intake, are important managements to avoid weight loss of pre-housing chicks.
  Mayara Rodrigues de Santana Eich , Rodrigo Garofallo Garcia , Irenilza de Alencar Naas , Fabiana Ribeiro Caldara , Rodrigo Borille , Ana Flavia Basso Royer and Sarah Sgavioli
  The study aimed to evaluate the behavior of broiler chickens reared in the blue and red light emitting diode (LED), using a fluorescent light as a control. The bird behaviors were recorded at 28, 35 and 42 d of grow-out using video clips. Broilers were randomly distributed in a factorial arrangement of 2 x 3 (two sex and three light sources) using six treatments and four replications. Blue and red LED light source and fluorescent light were tested from the 10th day until the 42nd day of grow-out. Behavioral data were analyzed using ANOVA and Kruskal-Wallis test was applied. An association was found between bird age, sex and source of light in the eating, drinking, preening and foraging behavior. Broilers were more active when exposed to fluorescent light and red LED than the birds exposed to the blue LED light source.
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