PENGARUH ENZIM PROTEASE PAPAIN DALAM PAKAN BUATAN TERHADAP PERTUMBUHAN DAN NET PROTEIN UTILIZATION BENIH LELE SANGKURIANG YANG DIBUDIDAYA DI DESA WONOSARI, KECAMATAN BONANG, KABUPATEN DEMAK
ABSTRACT: Availability of diet
in Sangkuriang catfish (Clarias gariepinus) cultivation is becoming a main
concern. One of the problems in the artificial diet is that the protein content
could not fully be utilized by the catfish. To solve the problem is by adding papain
protease in the artificial diet. This study was conducted to evaluate the
effect of papain protease enzyme in artificial diet on diet utilization
efficiency and growth performance of sangkuriang catfish (Clarias gariepinus)
fingerlings in the Village of Tambaksari, Sub-district of Rowosari, District of
Kendal, and Central Java. The fingerlings with initial body weight averaging
4.23±0,30 g were cultivated with the density of 1 fingerling per liter. The
fingerlings were obtained from Center for Hacthery, Muntilan. The fingerlings
were fed with artificial diet in four different doses of papain enzyme: A (0%),
B (0.75%), C (1.5%), and D (2.25%). The experiment used Complete Random Design
with 4 (four) treatments and each treatment replicated 3 (three) times. The
results show that the addition of papain protease enzyme significantly
(P<0.01) affected on the spesific growth rate (SGR) and net protein
utilization (NPU). It could be concluded that the addition of papain protease
enzyme could increase the specific growth rate (SGR) and net protein
utilization (NPU) of Sangkuriang catfish (Clarias gariepinus) fingerlings.
Optimum papain protease enzyme dose on the specific growth rate was 2.25% per
kg diet. The water quality during study was still in the viable ranges for
Sangkuriang catfish (Clarias gariepinus) fingerlings cultivation.
Key word: papain protease enzyme, artificial diet, growth, sangkuriang
catfish fingerlings
Penulis: Johannes Hutabarat,
Diana Rachmawati, Istiyanto Samidjan
Kode Jurnal: jpperikanandd160121