Early weaning of calves. I. Protein and energy levels in calf starters


Thirty six Holstein male calves were used in a randomized block design with a 2x3 factorial arrangement for treatment, concerning two levels of energy (76.2% T.D.N. and 69,2% T.D.N.) and three levels of protein (1,20% 15,0% and 18.0% D.P.). The experimental period ended at 91 days and the weaning age was 56 days old.Trinta e seis bezerros machos Holandeses, puros por cruzamento, foram utilizados em um delineamento de blocos ao acaso, sendo os tratamentos dispostos em arranjo fatorial 2x3, compreendendo dois níveis de energia (76,2% N.D.T. e 69,2% N.D.T.) e três de proteína (12.0% P.D.; 15,0 P.D. e 18.0 P.D.). O período experimental abrangeu do 14º ao 91º dia de vida, fazendo-se o desaleitamento aos 56 dias

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This paper was published in Cadernos Espinosanos (E-Journal).

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