Pengaruh Perbedaan Suhu terhadap Pertumbuhan Ikan Koi (Cyprinus Carpio)

Abstract

Koi fish is fish ornamental waters bargaining, one of the constraints in the effort coltivation koi fish is the level of survival rates low and the growth of fish relatively slow. This condition is one of them caused by the axistence of the temperature change or the temperature is not stable, causing koi fish become stress later died. This study was aimed to determine how big the influence of the The influence of the temperature against the growth of koi Fish and knowing the temperature is good for the growth of fish. The experimental design used is Completely Randomized Design (CRD) with four treatment and three test. The treatment fish without temperature, temperature 270C, 290C and 310C. The artificial fish fed as much as twice a day during the study 09.00 and 18.00. turn of the water as much as 10 % of the volume a total of water done for 3 days before observatoin. An early stage before done maintenance is the process of the adaptability for 30 minutes, so is expected to fish can adapt against the treatment. Fish maintained for 30 days and every 10 days done measurement at all fish covering long total, heavy and survival rates of fish. Measures of the quality of the water is temperature, pH and DO. The seeds of koi fish that maintained at a temperature 270C growth long absolute necessity of 11,74 cm and growth of weight range 8,61 - 10,36 gr. The value of survival rate maintenance is 100%. Parameters supporters quality of water oftained from DO changed 5,22 -5,61 mg/l and pH changed 7,08 – 7,15. The temperature is maintenance koi fish still in a state of optimally that at temperature 270C. Growth long koi fish have the influence of the real contained in the treatment B with the temperature 270C. But in the treatment A, C and D do not have the influence of the real against the growth of long and weights koi fish.