Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/57903
Título: Desenvolvimento do trato digestivo de bezerros leiteiros criados em sistema de aleitamento fracionado
Título(s) alternativo(s): Development of the digestive tract of dairy calves reared in a fractionated nursing system
Palavras-chave: Fractionated nursing system
Cattle
Digestive tract
Mitotic index
Omasum
Papillae
Rumen
Aleitamento fracionado
Bovinos
Trato digestivo
Índice mitótico
Omaso
Papilas
Rúmen
Leite
Data do documento: Jul-2013
Editor: Colégio Brasileiro de Patologia Animal (CBPA)
Citação: AZEVEDO, R. A. et al. Desenvolvimento do trato digestivo de bezerros leiteiros criados em sistema de aleitamento fracionado. Pesquisa Veterinaria Brasileira, Rio de Janeiro, v. 33, n. 7, p. 931-936, jul. 2013. DOI: 10.1590/S0100-736X2013000700015.
Resumo: To evaluate the effect of the fractionated nursing system in rumen development were used 12 Holstein calves, with an initial body weight average of 37.0 kg, individually maintained in holding pens. Conventional treatment was made with four liters of milk daily, during 60 days and fractionated nursing was composed by six liters from the 6th until 25th day, four liters of 26 to 45 and two liters from 46 to 59 days of life. Besides that liquid diet, Cynodon sp. hay, water and mineral supplement were freely offered. Food consumption was monitored daily. The animals were weighted weekly at morning, after the delivery of liquid diet. At 60 days, the calves were euthanized and the digestive system was weighted and rumen papillae were microscopically measured. The nursing system did not interfere significantly in concentrate, hay and total dry matter intake. In contrast, fractionated nursing resulted in higher body weight at 60 days and significant increase in absolute weight of digestive tract, rumen-reticulum, omasum and intestines, so as relative weight of omasum, intestines and mitotic index of ruminal papillae. The fractionated nursing system may be a feeding alternative to improve the rumen development and of calves.
URI: http://repositorio.ufla.br/jspui/handle/1/57903
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