PENGARUH PENGGANTIAN TEPUNG IKAN DENGAN SUSU AFKIR DALAM RANSUM TERHADAP PERFORMA PRODUKSI DAN KECERNAAN NUTRIEN AYAM BURAS JANTAN

Abstract

The purpose of this study is to determine the effect of fish meal substitution with expired milk in diets on the
productivity of cockerels at the age of 2-10 weeks. This study was carried out in Puger Village, Jember Regency,
East Java. A Completely Randomized Design (CRD) was used with five treatments and five replicates. Totally, there
were 25 experimental units and each unit consists of four cockerels fed without fish meal (R0); 25% diets of fish
meal substitution with expired milk (R1); 50% diets of fish meal substitution with expired milk (R2); 75% diets of
fish meal substitution with expired milk (R3) and 100% diets of fish meal substitution with expired milk (R4). Diets
and water were given ad libitum. The variables observed were performance and nutrient digestibility. It showed
that cockerels fed 75% diets of fish meal substitution with expired milk (R3) produced higher final body weight
and nutrient digestibility (P<0.05) compared to treatment R0, R1, R2 and R4. Treatment R3 produced 75.08%
digestibility coefficient of dry ingredient and 72,21% digestibility coefficient of crude protein. It can be concluded
that 75% fish meal substitution with expired milk produced better performance and nutrient digestibility compared
to other treatment.