PERFORMA BENIH NILA MERAH (Oreochromis sp.) HASIL PEMIJAHAN SILANG STRAIN RED NIFI DENGAN PANDU PADA PENDEDERAN II
Dyah Ayu Murwanti, Prof. Dr. Ir. Rustadi, M.Sc.2023 | Skripsi | BUDIDAYA PERIKANAN
SEED PERFORMANCE OF RED TILAPIA (Oreochromis sp.) CROSSES BETWEEN RED NIFI AND PANDU STRAINS IN THE SECOND REARING STAGE
This research aims to know the survival, growth, feed conversion ratio and heterosis value of red tilapia seed from crosses between Red NIFI (SM) strain from Sukamandi with Pandu (JT) from Janti by inbreeding (SM? - SM? and JT?- JT?), and outbreeding (SM? - JT? and JT? - SM?) in the second rearing stage. The study was organized using a completely randomized design with four treatments and three replications. The size of red tilapia seed stocked ranged from 3,85 to 4,33 g and 6,34 to 6,46 cm in length, which were the result of first rearing stage. Red tilapia seeds are reared using 2x2x1 m3 hapa, 60 cm water depth, and a stocking density of 50 seeds per m3. The study lasted for 42 days from November to December 2022 at the Center for Aquaculture Technology Development in Cangkringan, Sleman, Yogyakarta. The frequency of feeding was twice a day with a dose of 5-10?sed of fish biomass. Observations of the number, length and weight of individuals were made by sampling every two weeks. Data on survival, growth, and feed conversion ratio were analyzed by analysis of variance and tested by Duncan’s Multiple Rnge Test. Heterosis data were test descriptively. The result obtained: survival ranged from 94-96%, absolute growth based of length 2,67–3,31 cm and absolute growth based of weight 8,12–10,25 grams, specific growth rate 2,52–2,88 %/day, and feed conversion ratio 2,08-2,69. The heterosis value of red tilapia seeds from outbreeding to inbreeding crosses can outperform in absolute growth, specific growth rate and feed conversion ratio.
Kata Kunci : benih nila merah, heterosis. pertumbuhan, rasio konversi pakan, sintasan