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Chemical laboratories in the company are included in the work area that has a hazard and high risk. Therefore, effective safety management is required to control the risk of. Research on initial risk assessment and end risk and effectiveness of risk control in the activities of practicum finalizing bottle test in laboratory of PT. ABC Balikpapan. Assess the level of risk on activities in the chemical laboratory of PT. ABC. Hazard identification method finalizing bottle test using task risk analysis, while for risk analysis is done using semi-quantitative risk analysis method with risk assessment criteria (consequence, likelihood) and risk control is also made and then analyzed the result. The results of the average major risk of the end of the initial risk indicating that risk control in the activities of practicum chemical bottle Test finalizing in the laboratory of PT. ABC is good, but there are some high risk value of the end, such as the risks associated with the incidence of fire and explosion. So it is necessary to improve the laboratory safety management through the risk analysis program at every practice activity in the laboratory of PT. ABC.

The feed consumed is one factor that influences the development and anatomy of the internal organs and the digestive tract. This study was conducted to determine the effect of BSF larvae meal on the ratio of internal organ weight in native chickens. According to a completely randomized design, one hundred and forty one-day-old chicken (DOC) were randomly assigned to one of five treatments with four replications for each treatment. The treatment were: P0 = basal ration + 15% fish meal + 0% BSF larvae meal, P1 = basal ration + 11.25% fish meal + 3.75% BSF larvae meal , P2 = basal ration + fish meal 7.5 % + 7.5% BSF larvae meal , P3 = basal ration + 3.75% fish meal + 11.25% BSF larvae meal , P4 = basal ration + 0% fish meal + 15% BSF larvae meal . The results showed that P3 (3.75% fish meal + 11.25% BSF larvae) had a significant effect (P

Dayak onions (Eleutherine palmifolia) is a plant from Kalimantan. Dayak onions contain high flavonoid and phenol compounds and can be used as an alternative feed additive for broilers to replace synthetic antibiotics that can cause resistance and residues. This study aims to determine how much the ability of Dayak onions extract to inhibit Salmonella spp and Escherichia coli bacteria by using factorial randomized design and Duncan’s advanced test with three replications. The first factor was the maceration test consisting of control using tetracycline and replication of maceration I, maceration II, combined maceration I and II. The second factor is the concentration consisting of three concentrations of 0.50%, 1.00% and 1.50%. Antimicrobial activity is characterized by the presence of a clear zone that forms around a good hole. The results showed that the best antimicrobial activity of Dayak onion extract was obtained in K3M1 with inhibitory zone diameters of 15.47 mm for Salmonella spp and 13.40 mm for Escherichia coli. The value of the diameter of the inhibition zone shows a high sensitivity level as an antibacterial. The lowest diameter value of the inhibition zone was K1M2 which was 3.40 mm for Salmonella spp and 4.18 mm for Escherichia coli. It was concluded that the best replication factor of the antibacterial activity was at M1 and the higher the concentration of Dayak onion extract was used, the higher the antibacterial activity and could be used as an alternative feed additive.

Broiler chickens are livestock poultry that produces meat and are mostly maintained by the community. The increasing demand for broilers causes breeders to try to accelerate and improve the performance of broilers. The increase in broiler chickens must also pay attention to immunity because of the changing seasons which usually causes disease and can cause death in chickens. The addition of feed additives as a supplement for broiler chickens can increase immunity, one example is cinnamon because it contains antioxidants. Antioxidants are compounds that can counteract or reduce the negative effects of free radicals. We can find natural antioxidants in cinnamon (Cinnamomum burmannii). Feed additives have now been limited by the government in the feeding additive containing chemicals so the need for innovation of feed additives made from herbal materials that do not harm chickens and humans who consume them. This cinnamon study has a real influence on broiler chickens as a feed additive in their influence on antioxidants and chicken cholesterol. Broiler chicken antioxidants have a noticeable effect on femoral musculus in a combination of 100% kombucha tea with 5% cinnamon with ratio (1:1) (49.7%) and a combination of 100% kombucha tea with 5% cinnamon with ratio (1:3) (69.6%) in musculus pectoralis major. The content of cinnamon phytochemical compounds from the phenylpropanoids class in the form of cinnamic acid (Cinnamaldehyde compound) which belongs to the phenylpropanoid group is a derivative of phenol compounds, where the phenol compound also plays an important role in antioxidant activity. High antioxidants can have a positive effect on broiler chickens that are easily exposed to disease because it has the effect of preventing the formation of free radicals, eliminating radicals before damage appears, repairing oxidative damage, eliminating damaged molecules in broiler chicken cells. While on cholesterol parameters we know that broiler chicken meat has a high cholesterol content of 98.82-104.31 mg/100 g. The results of the study obtained a combination of 100% kombucha tea with 5% cinnamon with ratio (3:1) results of 3.71% femoral musculus and a combination of 100% kombucha tea with 5% cinnamon with ratio (1:1) (4.04%) musculus pectoralis major. The cinnamon content of saponins and tannins managed to lower the cholesterol content in broiler chicken meat.

The availability of feed is the main requirement in supporting the success of livestock development. One of the feed alternatives that is being discussed worldwide is insects because they have a high protein source. Insects are currently being discussed in the animal husbandry sector because insects include an alternative source of animal protein with high nutritional quality, efficiency and can be provided continuously and have nearly the same nutritional content as fish meal and soybean meal. Problems globally, the search for alternative protein sources to substitute a fish meal and soybean meal has become a major topic in research in the field of animal feed and nutrition. The fluctuating price of feed will affect business in the field of animal husbandry, where we know that the cost of feed contributes nearly 60-70% of the total business operating costs. Based on literature studies show that insects can replace fish meal and soybean meal 25-100%, one type of insect that has the potential as a feed ingredient is a mealworm which contains 32-52% crude protein and low crude fat 7%. Reported that the use of mealworms in the broiler feed to give effect to the performance of broilers from feed intake, feed conversion ratio (FCR), and final weight. It was concluded that mealworms were an alternative source of high protein and fat.

Bidara leaves (Ziziphus mauritiana) contain quercetin 3-O-rhamnoglucoside 7-O-rhamnoside which is a major flavonoid compound that has the potential as an antioxidant. This study was aimed to determine the effect of giving bidara leaf extract as an alternative antioxidant on the haematological status of quail. This study used 160 quails aged 9 days that were reared for 42 days. This study used a completely randomized design, which consisted of 5 treatments and 4 replications. Using the experimental arrangement: P0 (without vitamin C and bidara leaf extract); P1(vitamin C); P2 (0.20 mL bidara leaf extract); P3 (0.24 mL bidara leaf extract) and P4 (0.28 mL bidara leaf extract). Parameters measured were hematocrit, haemoglobin, erythrocyte and leukocyte. The result showed that erythrocytes and leucocytes had no significant effect (P>0.05) but had a significant effect (P

The purpose of this study are 1) to develop physics learning media in light reflection material, 2) to know the improvement of students’ critical thinking skill after implementing android-based learning media in their study. Research method used was 4-D namely Define, Design, Develop, and Disseminate. The sample of this research was 20 students of class XI MIPA in MAN 2 Yogyakarta. The technique used for collecting data was tests (pretest and posttest) and non test. The instruments used for collecting data was learning media validation sheets and question sheets. The data analysis technique used a sign test to determine the effect of learning media on critical thinking skills improvement. While the improvement on critical thinking skills using the normalized N-Gain equation. The results of this study was 1) learning media developed was valid, 2) android-based learning media improved students’ critical thinking skills as evidenced by the value of sig 0.00 0.03 and a high category which is 0.03