Pengaruh Substitusi Artemia Spp. dengan Keong Mas (Pomacea Canaliculata) dan Cacing Tanah (Lumbricus Rubellus) terhadap Pertumbuhan dan Retensi Protein Benih Ikan Gabus (Channa Striata) [Substitution Effect Of Artemia Spp. With Golden Snail (Pomacea Canaliculata) And Worm (Lumbricus Rubellus) On The Growth And Protein Retention Snakehead Seed (Channa Striata) ]

Freshwater culture commodity such as snakehead fish (C. striata) has high sufficient demand. Attempts for maintaining snakehead fish population (C. striata) has been done by cultivating. Natural feeding form Artemia spp. can increase the survival rate of snakehead fish seed (C. striata), but the USAge of Artemia spp. make farmers pay high cost that it can cause loss. This study aimed to determine the effect of substitution of Artemia spp. with golden snails (Pomacea cancaliculata) and worm (Lumbricus rubellus) on the growth and protein retention of snakehead fish seed. Methods that used in this study is experimental method, with Completely Randomized Design (RAL) as an experimental design. Treatment is given in the form of nine different types of feed that includes, P0 treatment with Artemia spp., P1 with worm feed (L. rubellus), P2 with golden snail feed (P. cannaliculata), P3 with feed Artemia spp. 75% and worm (L. rubellus) 25%, P4 with feed Artemia spp. 50% and worm (L. rubellus) 50%, P5 with feed Artemia spp. 25% and worm (L. rubellus) 75%, P6 with feed Artemia spp. 75% and golden snail (P. cannaliculata) 25%, P7 with feed Artemia spp. 50% and golden snail (P. cannaliculata) 50%, P8 with feed Artemia spp. 25% and golden snail (P. cannaliculata) 75%. Each treatment was repeated three times. Data analysis using analysis of variance (ANOVA). The results showed that substitution Artemia spp. with golden snail (P. canniculata) with worm (L. rubellus) doesn't give real effect (P>0.05) to the growth and protein retention of seed snakehead fish (C. striata). The average of daily growth rate (SGR) 1.60-1.889%, average absolute growth 1.2391.522cm and protein retention 40.664-49.406%. The results showed that golden snail (P. canniculata) and worm (L. rubellus) can be used as substitution feed of Artemia spp. for snakehead fish (C. striata)

Probiotic Potential of Lactic Acid Bacteria on Feed Efficiency, Weight and Carcass Percentage in Ducks

The aim of the study was to determine the effect of the use of probiotic lactic acid bacteria (Lactobacillus acidophilus, Lactobacillus casei, Lactococcus lactis, and Bifidobacterium sp) on feed efficiency, carcass weight and carcass percentage in broiler ducks. Probiotics lactic acid bacteria produce bacteriocins and organic acids that inhibit the growth of pathogenic microbes in the digestive tract of poultry, so that the intestinal villi of broiler ducks are healthy. Besides that, probiotics are able to reduce cholesterol levels in meat when consumed by humans and can improve health. This study used 48 peking ducks. The probiotics of Lactic Acid Bacteria used were a concentration of 1.2 x 108 CFU/ml. In this study there were four different treatments, namely P0 (without probiotics), P1 (given 1 ml probiotics/liter drinking water), P2 (given 2 ml probiotics/liter drinking water) and P3 (given 3 ml probiotics/liter of drinking water). The results of the feed efficiency study showed that there was a significant difference (p<0.05) in the P0, P1, P2 and P3 treatments. The highest feed efficiency was at P3 (33.81%) while the lowest was P0 (30.84%). The results of the study on carcass weight indicated that the probiotics tended to be higher than those who were not given probiotics but statistically not significantly different (p>0.05). The highest carcass weight was P3 (1749.92 g) and the lowest was P0 (1709.25 g). The results of the study on the percentage of carcass weight showed a significant difference (p<0.05) in both P0, P1, P2 and P3 treatments. The highest percentage of carcass weight was at P3 (64.60%) and the lowest was P0 (60.96%). It can be concluded that the administration of probiotics lactic acid bacteria (Lactobacillus acidophilus, Lactobacillus casei, Lactococcus lactis, and Bifidobacterium sp) at a dose of 1 ml/liter of drinking water, 2 ml/liter of drinking water and 3 ml/liter of drinking water can affect feed efficiency and the percentage of duck carcasses. but has no effect on the carcass weight of broiler ducks