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Articles by Isabel Cristina Boleli
Total Records ( 2 ) for Isabel Cristina Boleli
  Rafael Raile Riccardi , Euclides Braga Malheiros and Isabel Cristina Boleli
  The effects of posthatch fasting on villi height and number, crypt depth and number of globet cells in duodenum, jejunum and ileum of broiler chicks from heavy and light eggs were compared. The 2 x 3 x 3 factorial design (egg weight: light and heavy eggs; treatments: with water and feed, with water, without water and feed; treatment duration: 24, 48 and 72 h) was used. The villi presented higher size in chicks from heavy than from light eggs. The fasting resulted in lower villi in duodenum (at 48 h), jejunum and ileum (at 72 h). The villi number increased in duodenum and jejunum of chicks from light eggs and only in jejunum of chicks from heavy eggs, but the increase was more accented in chicks from light ones. The fasting reduced the globet cells number in jejunum. Water intake avoided the fasting effects on villi height but had no effect on villi number. Chicks from heavy eggs fed with water and ration presented deeper crypts in all regions of the small intestine. The duodenum and ileum crypt depth of the chicks from heavy eggs reduced when they were submitted to fasting and when they were fed only with water. The results showed that chicks from light eggs were more affected than chicks from heavy eggs. The water intake partially avoided the fasting effects.
  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.
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