Intestinal morphology of poultry treated with polymeric biguanide and chlorine in drinking water

• Grant number: 11/13464-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: November 01, 2011
• End date: April 30, 2013
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
• Principal Investigator: Lizandra Amoroso
• Grantee: Letícia Graziele Pacheco
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil

Abstract

The good quality of water interferes positively in maintaining the health of the intestinal mucosa favoring the absorption of nutrients. In this context, this paper intends to analyze the morphology of the small intestine of laying hens after the use of polymeric biguanide (Biguatin ®) and chlorine in the drinking water. The total of 180 pullets will be distributed in a completely randomized design with three treatments and six replicates of 10 birds each. The three treatments will be based on the use of unfiltered water, water treated with polymeric biguanide in the dilution of 1:18.000 and treated water with 2 ppm of chlorine. When the hens complete 81 days of age, it will collect the small intestine of 18 birds for routine histology and morphometry of the duodenum, jejunum and ileum. The macroscopic characteristics of the small intestine (absolute weight and relative weight of each segment) and intestinal morphometric characteristics (length and width of intestinal villi, crypt depth and number of goblet cells) will be obtained in order to determine the effects of adding different types of disinfectant in the water on the maintenance of gut integrity of the birds. (AU)