Clove (Syzygium aromaticum L.) leaf extraction can produce 2-4% essential oil, containing 70-90% eugenol. Clove essential oil has biological activities, such as antibacterial, antifungal, insecticidal and antioxidant properties, and is used traditionally as a savoring agent and antimicrobial material in food. It becomes the basis for this research on the use of eugenol of clove leaf essential oil as a feed additive for broilers. Experimental treatments consisted of E0 (without the use of eugenol), E1 (0.5% eugenol in feed), E2 (1% eugenol in feed), and E3 (1.5% eugenol in feed). The addition of 0.5 to 1.5% eugenol in feed significantly reduced feed intake compared to the control, in which the higher the use of eugenol in feed was, the lower the feed intake would be. The addition of 0.5-1% eugenol of clove leaf essential oil numerically increased body weight gain of broilers, but not significantly different between the three treatments, while the addition of 1.5% eugenol significantly decreased body weight gain compared to the other three treatments. The addition of 1% eugenol in feed significantly increased the final body weight compared to the control, but not significantly different from the addition of 0.5% eugenol, while the addition of 1.5% eugenol significantly decreased the final body weight compared to other treatments. The addition of 0.5-1.5% eugenol in feed significantly reduced feed conversion compared to control, but not significantly different between the three treatments. The addition of 1% eugenol of clove leaf essential oil in feed provided optimum body weight gain and final body weight for broilers at 6 weeks of age of 2035.00 ± 66.52 g/chicken and 2185.00 ± 66.52g/chicken, respectively with feed conversion of 1.61 ± 0.06.

The low quality protein of coconut meal, coupled with high fibre content, leads to limited use of this agricultural by-product in the poultry diet. Attempts to maximize the amount of coconut meal included in the broiler feed have been made through amino acids supplementation, enzyme addition and pelleting coconut meal. Among these feed technologies and manipulation, pelleting coconut meal appears to be more powerful in promoting the growth of broiler chickens. The reasons for the improvement of broiler growth due to pelleting coconut meal have not been established yet. The mechanisms of improved growth of birds might be through increased feed intake, less energy spent and increased bulk density. Coconut meal contains a high concentration of mannose – based polysaccharides or mannan. This substance has long been believed to have prebiotic properties due to its capability to bind certain species of pathogenic bacteria in the digestive tract of birds. Voluminous reports of the positive effects of mannose-based polysaccharides from yeast have been published. Mannose –based polysaccharides from legumes, on the other hand, have been reported to have anti-nutrient property. Surprisingly, mannose-based polysaccharides from coconut behave like yeast mannan. A number of current studies indicated that mannose based polysaccharides improved body weight gain and feed digestibility. The growth of birds was negatively impacted when the birds were challenged against pathogenic bacteria of E. coli. Wet droppings and diarrhea incidences were not found in E. coli-challenged birds when the diets were supplemented with coconut mannan. In conclusions, coconut meal can be used as a feed ingredient for poultry unless the coconut meal was pelleted or enzymatically treated. Mannose-based polysaccharide from coconut was effective to promote growth and acted as prebiotic.

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It is well documented that feed additives improve livestock productivity through improving feed intake, feed efficiency, and livestock health status. Oligosaccharide is categorized as a prebiotic additive that can modify the microbial ecosystem in the small intestine by creating an environment that is more favorable for nonpathogenic bacteria’s growth. Current research investigates the effects of chitosan-oligosaccharide (COS) from snail shells in the diet on quail performance and carcass characteristics. A total of 100 female DOQ were placed in a Completely Randomized Design, five treatments and four replicates with five birds for each replicate and were kept under standard management conditions for six weeks. Basal diet consisted of corn, rice bran, soybean, fish meal, coconut oil, minerals, methionine, and lysine, and was mixed in such a way to achieve 22% protein. Treatments were the basal diet without feed additive (T1) as the negative control, the basal diet with 28 ppm preparation of lactate acid bacteria, LAB (T2) as the positive control, the basal diet with 200 ppm of COS (T3), the basal diet with 400 ppm of COS (T4), and the basal diet with 600 ppm of COS (T5). The birds were having free access to the diets and drinking water. Bird’s weight and feed intake were recorded weekly. At the end of the experiment, two birds from each cage were selected and slaughtered for carcass assessment and weight digestive organ. The variables are feed intake, live weight gain, feed conversion ratio, carcass yield, breast meat weight, and organ weight. The data were analyzed by using Anova and comparison tests using the Duncan test. The results revealed that the addition of COS in the diet significantly reduced (P<0.05) feed intake, carcass yield, and dressing percentage and improved (P<0.05) feed conversion ratio, liver, and two ceca (P<0.05). Other parameters were not different (P>0.05) between treatments. Therefore, it could be concluded that the inclusion of chitosan-oligosaccharide (COS) in the diet improved quail performance by enhancing feed efficiency.

This paper analyzes the legal protection of children with special needs during the COVID-19 pandemic. This legal sociology research uses a qualitative approach. The research location is in Medan, North Sumatra province. The results show that the legal protection of children with special needs in Medan City, North Sumatra province related to education, rehabilitation, and social assistance is still not fulfilled even though there are regional regulations in the province of North Sumatra. This is due to inadequate facilities and infrastructure that hinder the fulfillment of these rights. This is contrary to Islamic law, where children's rights must be guaranteed, protected, and fulfilled by maqashid al-syari'ah, namely the maintenance of offspring. It also contradicts Article 5 paragraph (1) of Law Number 8 of 2016 concerning Persons with Disabilities, that persons with disabilities have the same rights in life and livelihood.