PERFORMANCE AND HETEROTIC ESTIMATION OF GROWTH IN INTRASPECIFIC CROSSING OF GIANT GOURAMY
ABSTRACT: Intraspecific
crossing of giant gouramy was done to get better hybrid population. This study
was conducted to evaluate the hybrid vigour or heterotic value of thehybrids
line, especially for growth rate character. Besides that, we want to know theeffect
of hybridization on performance of phenotypic variability. Two days posthatching
age larvae of four populations i.e. Bastar and Blue-saphire strain, F-1 hybrid and
F-1 hybrid reciprocal, were used in this experiment. All fish were reared in
aquariafor 30 days period in indoor hatchery. The fish were fed with live food
such as Moinaand Daphnia for the first ten days, followed by Tubifex for the
second ten days and finally, commercial feed were given until the end of the
study. The collected datawere total length, standard length, and body weight of
each population. The resultsshowed that the phenotypic variability of the
hybrid population was higher than thatof inbred population. Hybrid population
from female of Bastar and male of Blue-saphire has better growth than both of
its parents. Heterotic values of total length, standard length, and body weight
of the hybrid population was 9.5%, 2.9%, and 15.6% respectively. Maternal
effect was detected in hybrid population.
KEYWORDS: Giant gouramy,
intraspecific crossing, heterotic value, growth
Author: Didik Ariyanto and
Nunuk Listiyowati
Journal Code: jpperikanangg110006
