scholarly journals Dietary herbs supplementation improves growth, feed efficiency and apparent digestibility coefficient of hybrid grouper ( Epinephelus fuscoguttatus  ×  Epinephelus lanceolatus ) juvenile

2021 ◽  
Author(s):  
Dayang Nur Jazlyn binti Abang Zamhari ◽  
Annita Seok Kian Yong
Keyword(s):  
Feed Efficiency ◽  
Apparent Digestibility ◽  
Apparent Digestibility Coefficient ◽  
Hybrid Grouper ◽  
Epinephelus Fuscoguttatus

scholarly journals FASTING IN HYBRID GROUPER EPINEPHELUS FUSCOGUTTATUS X EPINEPHELUS LANCEOLATUS IN RELATION TO PROXIMATE CONTENTS, GROWTH AND FEED EFFICIENCY

2019 ◽  
Vol 44 (1) ◽  
pp. 11-17 ◽  
Author(s):  
Yasmina Nirmala Asih ◽  
Ketut Mahardika ◽  
Bambang Susanto
Keyword(s):  
Growth Rate ◽  
Feed Efficiency ◽  
Nutrient Contents ◽  
Hybrid Grouper ◽  
Feeding Regimes ◽  
Epinephelus Fuscoguttatus ◽  
Fish Product

Fasting in fish is commonly used to improve the quality of fish product post-slaughtered. This study aims to investigate the alteration in nutrient contents, growth, and feed efficiency of hybrid grouper Epinephelus fuscoguttatus x E. lanceolatus fasted at different intervals. There were two experiments conducted in this study. The first experiment evaluated alteration in nutrient contents of carcass and liver of hybrid groupers. The fishes were grouped into three feeding regimes: fed daily, fasted at a one-day interval, and fasted at a two-day interval. Each group had 50 fishes with an initial mean weight of 200 ± 11.3 g. The second experiment was to evaluate the growth and feed efficiency of the fishes. Hybrid groupers were subjected to two feeding regimes. The first group (n = 45) was fed daily, and the second group of fish (n = 45) fasted at a two-day interval. The first and second experiments were conducted for one and two months, respectively. The results show that hybrid groupers fed daily have the lowest protein and the highest fat in the carcass compared to those fasted on one- or two-day interval. During the first month, there was no difference between the growth rate of the fishes fed daily and fasted at a two-day interval (32.88 and 32.08%, respectively). However, in the second month, the fishes fed daily have a growth rate of 66.08%, which is 1.4 times higher than those fasted at a two-day interval (48.12%). Altogether, fasting in hybrid groupers could alter proximate contents, slow down growth, and improve feed efficiency.

scholarly journals Effect of Fermented Rice Bran used as Feed Ingredient on Apparent Digestibility Coefficient of Tilapia (Oreochromis niloticus) Feed

2021 ◽  
Vol 934 (1) ◽  
pp. 012009
Author(s):  
A N Putra ◽  
D Rohayati ◽  
M B Syamsunarno ◽  
Mustahal
Keyword(s):  
Rice Bran ◽  
Oreochromis Niloticus ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Raw Material ◽  
Average Weight ◽  
Apparent Digestibility ◽  
Feed Ingredient ◽  
Apparent Digestibility Coefficient ◽  
Different Types

Abstract This study aimed to investigate the effect of fermented rice bran used as a feed ingredient on the apparent digestibility coefficient (ADC) of tilapia feed. The fermentation process was conducted under aerobic conditions using 2% Aspergillus niger for 24 hours. Moreover, three different types of feed were prepared with 3 replicates and these include treatment A (reference feed), B (unfermented rice bran feed), and C (fermented rice bran feed). These treatments were provided for the tilapia for 30 days. Meanwhile, the tilapia used had an average weight of 5 g/fish and reared using a recirculation system with a density of 16 fish/aquarium. The results showed that the value of ADCenergy (78.11%) in treatment C was significantly highest (P<0.05) compared to other treatments, while the lowest was in treatment B with 72.24%. The values of ADCdry matter (67.56%) and feed efficiency (64.20%) in treatment C were also higher (P<0.05) compared to treatment B with 57.02% and 54.74% respectively. However, there was no significantly difference (p>0.05) in the value of ADCprotein, ADClipid, and SGR among the treatments. These results indicate the rice bran fermented using A. niger is potential to be used as a raw material ingredient for tilapia feed.

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