ABSTRACT.


TOMÁS Mc AULIFFE G.1, RICARDO COSTABLA E.2, JAMES Mc GINNIS3 Y ALDO DALMAZO4
 

The biological and economic value of Probiomar (trade name for a mixture of hydrolized fish meal and fish meal in equal parts) was compared with regular fish meal in a broiler ration.
The experiment was conducted with 400 sexed, day-old Hubbard chicks. Two hundred chicks of each sex were randomly assigned to 10 treatments with 4 replications in a battery brooder.
At 4 weeks of age consumption and body weight were measuredand the results showed that the protein value of Probiomar was similar to regular fish meal which indicates that a higher price of the former product is not justified.
When Probiomar constituted 17% of the ration no detrimental effect was observed but when 100% of the animal protein was supplied by 23% of Probiomar, body weight and feed conversion were significantly inferior statiscally to levels of 0 - 6 - 12 and 17%. These results could be possibly attributed to an aminoacid deficiency and/or a toxic effect of this product ata high level.
The importance of studying the minimun level of crude protein required by broiler chickens with the ingredients available in our market is suggested.

Keywords:
1 Ingeniero Agrónomo Proyecto Avícola. Estación Experimental La Platina. Instituto de Investigaciones Agropecuarias.
2 Ingeniero Agrónomo Proyecto Producción Avícola. Estación Experimental La Platina. Instituto de Investigaciones Agropecuarias. Profesor titular de la Cátedra de Avicultura, Facultad de Agronomía, Universidad Católica de Chile. Miembro del Jurado del Instituto en el Comité Avícola Estatal, Consfa.
3 Profesor, University Washington State, USA.
4 Médico Veterinario, ex Profesor Cátedra Avicultura, Facultad de Agronomía, Univers