This study was conducted to determine the performance index and business analysis of broilers infected with Escherichia coli by administering lactic acid bacteria probiotics in the form of Lactoped® (Lactobacillus casei, Lactobacillus plantarum, Lactobacillus fermentatum, Lactobacillus acidophilus). This type of research was true experimental research using a post-test-only control group design. The design used in this study was a completely randomized design (CRD). 30 broilers were randomized into three treatments (P0, P1 and P2) in each group with a minimum of six times. Probiotic lactic acid bacteria (LAB) with a concentration of 108 CFU/ml in broilers infected with Escherichia coli showed a higher performance index. It could cover the entire fixed costs so still feasible to do, meanwhile, for the scale of research (10 heads/treatment), it was not yet feasible to implement due to it has suffered losses.

The Kalibaru Port of Tanjung Priok, North Jakarta, is one of the ports that is used for shipping and loading and unloading activities. Bathymetry information is needed to support one of the activities in the port, namely in terms of shipping. The purpose of this research is to map the bathymetry in the harbor pool area and to find out the areas that need to be dredged in the Kalibaru Tanjong Priok harbor pond. This research was conducted on May 24, 2022 in the pond area of ​​Tanjung Priok Harbor, North Jakarta. This research was conducted using a single beam echosounder using a Garmin GPSmap 420s tool to determine the depth of the harbor pool. Data processing using Ms. excel, Auto CAD land desktop, surfer to generate depth contours and calculate dredge volume. The volume calculation uses the average end area method. The calculation result of dredging volume is the sum of the cross-sectional area multiplied by the section distance. The results showed that the depth of the Tangjung Priok harbor waters ranged from 3 to 17 meters and the dredged volume reached 165,319 m3.