Abstract

An experiment was carried out at household in Hoa Loi village, Chau Thanh district of Tra Vinh province to evaluate the effects of replacing of dietary fish meal by seafish by-products on growth performance and economic returns of growing Nong nghiep ducks. A total of 150 Nong nghiep ducks at four weeks of age were arranged in a completely randomized design with 5 treatments and 3 replicates with 10 birds (balanced for sex) per experimental unit. The treatments were a control diet with only fish meal protein (SF0) and in the others fish meal protein was replaced by seafish by-products at different levels of 25% (SF25), 50% (SF50), 75% (SF75) and 100% (SF100) of the amount of the fish meal protein of the SF0 diet. Premix- vitamin was supplied at 0.3% for all treatments. Water spinach was offered with the same amount of 30g in fresh weight/duck/day to provide vitamins and minerals.

The results of the experiment on Nong nghiep ducks showed that the DM and CP intakes were significantly higher in the SF75 treatment (P

Key words: Nong nghiep ducks, seafish by- product, daily weight gain, growth performance