Effect of using soybean meal hydrolysate with pineapple juice in diet on growth performance, stress tolerance and disease resistance

Songsub Arungamol, Narawut Rapankum and Nopparat Patchanee

ABSTRACT: Effect of using soybean hydrolysate through pineapple juice to replace fish meal in Nile tilapia on Growth performance stress tolerance and disease resistance. Soybean meal was digested with pineapple juice at 1:2 for 90 minutes and replaced with fish meal in diet formula. The experiment was assigned into 4 groups in each randomly by mixing soybean hydrolysate in diet at the rank of 0%, 25%, 50% and 75% which contained 31% protein and average energy level 284 kcal/100g. Tilapia with an average initial weight was 0.33 grams cultured for 45 days. The end of feeding experimental diet, fish were tested for tolerance to certain stress conditions by soaking 500 ppm formalin for 2 hours, 1.5 ppm of ammonia dissolved in water and the resistance to bacteria A. hydrophila. The results showed that fish fed with soybean meal digested with pineapple juice instead of fish meal at rate 0, 25 and 50% the effective growth were not different (P>0.05). In some stress tolerance tests by testing with formalin and ammonia indicated that accumulated mortality rate of experimental group using soybean hydrolysate in fish meal diet formula at the rate of 0 and 25% was lower than the fish meal replacement group at the rate 50 and 75% were significant (P0.05). It can be concluded that soybean hydrolysate can be digested with pineapple juice would be highly at 25% without affecting growth rate, stress tolerance and disease resistance.

Keywords: Soybean meal hydrolysate, Nile tilapia, Stress tolerance test, Challenge Test
 

Source : https://ag2.kku.ac.th/kaj/PDF.cfm?filename=P98%20Fis28.pdf&id=3141&keeptrack=1