International Journal of Poultry Science 14 (9): 529-532, 2015 ISSN 1682-8356 © Asian Network for Scientific Information, 2015 Corresponding Author: Dyah Lestari Yulianti, Animal Husbandry Faculty, Kanjuruhan University, S. Supriyadi No. 48 Street, Malang City, East Java, 65148, Indonesia 529 Effect of Andrographis paniculata a Phytobiotic on Consumption, Feed Conversion and Mojosari Duck Egg Production Dyah Lestari Yulianti , Pratiwi Trisunuwati , Osfar Sjofjan and Eko Widodo 1 2 2 2 Animal Husbandry Faculty, Kanjuruhan University, 1 S. Supriyadi No. 48 Street, Malang City, East Java, 65148, Indonesia Animal Husbandry Faculty, Brawijaya University, Malang, 2 Veteran No. 48 Street, Malang City, East Java, 65145, Indonesia Abstract: The aim of this research was to investigate the effect of Andrographis paniculata leaf powder as a phytobiotic on feed consumption, feed conversion and egg production of the Mojosari duck (Mojosari anas plathryncos). One-hundred 24-month-old Mojosari ducks were given basal feed with different concentrations of Andrographis paniculata leaf powder as a feed additive. Experiments were arranged with a completely random design, with five leaf powder concentrations, each replicated four times; A. paniculata leaf powder was added to rations in the following concentrations: 0% (P0), 0.2% (P1), 0.4% (P2), 0.6% (P3) and 0.8% (P4). Data was analyzed using analysis variants and if there was a difference between treatments, those data were further subjected to a least significant difference test; variables included feed consumption, daily egg production and feed conversion. Results showed that A. paniculata leaf powder significantly affected (p<0.05) feed conversion and egg production of Mojosari ducks. However, A. paniculata leaf powder had no significant effect (p>0.05) on feed consumption. Average feed consumption per treatment (P0, P1, P2, P3, or P4) was 136.77, 137.82, 135.8, 139.47 and 138.97 g/bird/d, respectively. Average feed conversion values were 9.35 (P0), 5.92 (P1), 4.93 (P2), 7.01 (P3) and 13.50 (P4) and average egg production percentage per treatment was 23.18% for P0, 33.73% for P1, 42.22% for P2, 28.25% for P3 and 14.61% for P4. It was concluded that 0.4% A. paniculata leaf powder was optimal for its phytobiotic actions on Mojosari ducks. Key words: Andrographis paniculata leaf powder, phytobiotics, Mojosari duck (Mojosari anas plathryncos) INTRODUCTION Ducks play an important role in supporting the availability of cheap animal protein sources that are easy to obtain. Thus, duck farming as an alternative source of income has surged in both rural and peri-urban communities. In fact, duck eggs constituted more than 180,000 tons (16%) of the national egg production in Indonesia in 2005. Moreover, duck meat made up 38,700 tons (3%) of the national production of poultry meat or about 2% of national meat production in Indonesia. Generally, ducks traditionally rising with the breed quality are not selected, irregular supply of feed and grazing from one place to another. Mojosari duck (Mojosari anas plathryncos) egg production rates are still relatively low at between 100-150 eggs/year compared with intensively reared ducks (Ketaren, 2007). Mojosari duck germplasm has the potential contribution greatly to available sources of animal protein for the people of Indonesia. This local indigenous duck is found in the Mojokerto District in East Java (Indonesia). Production of this duck is higher than that of Tegal ducks. Thus, Mojosari ducks have the potential to be developed as a commercial egg laying duck in both traditional and intensive rearing. The body of these ducks is relatively smaller than other egg laying ducks, but their eggs are quite large, tasty and popular with Indonesian consumers. Interestingly, ducks are more resistant to diseases and parasites than other fowl types, allowing the concentration of drugs and other additives in duck feed to be lower than that for chickens and turkeys. But the development of drugs added to feed ducks in order to prevent the outbreak of diseases, such as colibacillosis, fowl cholera, salmonellosis and necrotic enteritis (JETACAR, 1999). Since the 1970s, when farms began to grow in Indonesia, the use of antibiotics as growth promoters and to improve feed efficiency emerged. However, a problem that has arisen from these practices in livestock has been shown to indirectly impact human health (Soeharsono et al., 2010). As a result, European countries have restricted the use of antibiotics as growth promoters in animal feed and have started to invite all producers and breeders around the world to use alternative materials. Phytogenic medicinal plants represent natural antibiotic alternatives that have been gaining attention from the public and researchers alike. Phytogenic additives, plant extracts, essential oils, prebiotics and probiotics have been widely studied as a