TITLE:
Effect of Zingiber officinale and Allium sativum Powders as Natural Feed Additives Promoting Growth, Feed Utilization and Whole-Body Composition in Clarias gariepinus Fry
AUTHORS:
Paulin Nyadjeu, Doriane Divine Mane Yemdjie, Noël Arlette Tamko Ndjuissi, Ghislain Nguimdop Nguenang, Nesrine Yolande Chamsy Dedou, Minette Eyango Tabi-Tomedi
KEYWORDS:
Clarias gariepinus, Ginger, Garlic, Growth
JOURNAL NAME:
Food and Nutrition Sciences,
Vol.12 No.6,
June
18,
2021
ABSTRACT: Nutrition is the main factor determining the
potential of farmed fish to exhibit their growth capacity as a function of the
protein content and certain additives contained in their diet. Thus, the
present study was conducted to assess dietary supplementation effects of ginger
and garlic as feed additives on growth, feed utilization and whole-body composition in Clarias gariepinus fry. Following a 24 h fasting, 525 fry weighing 1.2 ± 0.01 g were randomly divided in triplicate into five
treatments of 105 fish each and fed for 56 days. In treatment T0, fry was fed with control basal diet, in treatments T1 and
T2, fry was fed with basal diet containing 1% and 2% ginger,
while in treatments T3 and T4, fry was fed on basal diet
supplemented with 1% and 2% garlic. Fish were fed at the rate of 10% of their
body weight and every 14 days, intermediate fish sampling was done during which
fry per treatment was counted, measurements taken on a representative
sample and the feeding rate adjusted. Main water parameters were recorded daily
before feeding. After the feeding trial, fish fed 1% (T3) garlic had the best
growth performance in term of final weight (33.01 ± 2.99 g), weight gain (WG) (31.81 ± 0.99 g), specific growth rate (SGR) (5.86 ± 0.16%/d) and
feed conversion ratio (FCR) (1.25 ± 0.11) which was significantly different
from other treatments, particularly T0 which had the lowest growth performances
(final weight (17.02 ± 0.27 g), WG (15.81 ± 0.28 g), SGR (4.73 ± 0.03%/d) and FCR (2.03 ± 0.01)). Similar trend to growth parameters was found
with whole-body composition (moisture, crude protein, crude lipid, ash, and
energy) and nutrient retention. In conclusion, C. gariepinus fry fed 1% dietary inclusion level of garlic has had better growth, feed utilization and body composition, which has been more
attributed to its physiological and pharmacological properties than its
nutritional effects.