STUDI TENTANG PERTUMBUHAN IKAN NILA (Oreochromis sp) YANG DIBUDIDAYAKAN DI KJA DANAU MANINJAU DENGAN PAKAN KOMERSIL BERBEDA

Abstract

This study aims to determine the survival rate of fish, length growth, weight gain and FCR on parrot fish various types of commercial feed in KJA lake Maninjau. This research uses descriptive method. Data collected by survey. Fish samples taken from farmers around the lake Maninjau KJA. The type of fish feed used was  variety of trademarks Sinta, Bintang, Mabar, Comfeed, Malindo and Complete. Data taken at 6 floating nets of different types of feed at 3 locations namely lakes Maninjau Kampung Tangah Jorong Batuang Panjang Nagari Sungai Batang Kecamatan Tanjung Raya, Jorong Kubu Nagari Sungai Batang Kecamatan Tanjung Raya, Jorong Muara Pauh Nagari Sungai Batang Kecamatan Tanjung Raya. Parrot fish sample takes as many 30 birds in each cage predetermined. Fishing then measured the length and weight. Fish sampling done 1 time a month for 3 months 12 day  to determine the growth of fish floating net predetermined. From this research it is known that the growth of parrot (Oreochromis sp) at different feed obtained survival rate (SR) contained in fish feed Bintang 71.33% and the lowest was Malindo 53.62%, the highest growth in absolute length of fish feed Malindo 18.42 cm and lowest 17.05 cm Bintang, highest weight gain of fish feed  Mabar 171.5 g and 150.84 g Comfeed lows, while the FCR is best found in fish feed brands Sinta and Bintang 1.5 and the lowest was found in fish feed 1.9 Malindo brands.