Survival, Growth, Meristic and Morphometric Characteristics of Hybrids Between Black and White Nile Tilapia Strains

Abstract

Tilapia is a commodity that has high economic value. The demand for tilapia continues to increase from year to year. In order to improve the genetic quality of fish, a hybridization program is carried out so that they have advantages becomes superior and good, growth rate, disease resistance and bad environment, and food utilization efficiency compared to their parents. Therefore, this research was conducted at Wanayasa Marine Conservation Service Unit (SPKPD) with A. White Tilapia (♂) x Black Tilapia (♀), B. Black Tilapia (♂) x White Tilapia (♀), C. White Tilapia (♂) x White Tilapia (♀), D. Black Tilapia (♂) x Black Tilapia (♀).This research include the preparation of containers and mains test fish, spawning, fertilization, hatching, maintenance of larvae and fry up to 90 days of age. Then measure the parameters such as survival, growth, meristic and morphometric characteristics. The results of the study showed that the highest specific survival and growth were in treatment B of 92.67%; 19.68%. Morphometric characteristics obtained the highest results in the hybrid strain Black Tilapia (♂) x White Tilapia (♀) with a total length of 11.58 cm, head length of 3.21 cm, standard length of 9.32 cm and body height of 3.37 cm. While the highest meristic characteristics were obtained in Treatment B = D.XVI-XVII : 13-14 P. 12-13 V. I : 5 A. III : 9-11 C. II : 15-16 LL. 26-27. This marked with the formula D for dorsal, P for pectoral, V for ventral, A for anal, C for caudal, LL for lateral line. While the Roman numerals indicate the number of hard radii, the Arabic numerals denote the weak radii.