~1~ ISSN Print: 2394-7500 ISSN Online: 2394-5869 Impact Factor: 5.2 IJAR 2016; 2(9): 01-07 www.allresearchjournal.com Received: 01-07-2016 Accepted: 02-08-2016 Shyam Narayan Labh Department of Zoology, Amrit Campus, Tribhuvan University, Kathmandu, Nepal. Shubha Ratna Shakya Department of Zoology, Amrit Campus, Tribhuvan University, Kathmandu, Nepal. Correspondence Shubha Ratna Shakya Department of Zoology, Amrit Campus, Tribhuvan University, Kathmandu, Nepal. Effects of lapsi Choerospondias axillaris (Roxb.) on survival, growth and hepatic enzyme activities in Cyprinus carpio fingerlings Shyam Narayan Labh and Shubha Ratna Shakya Abstract Altogether, two hundred seventy fingerlings of C. carpio (4.71±0.012g) were randomly distributed in six treated groups in triplicates form. Carp were fed with basal diet containing 40% protein supplemented with ethanol extract of lapsi fruit at 0, 0.1, 0.2, 0.4, 0.8 and 1.6 g kg -1 @ 3% of their body weight twice daily for 70 days. Cent per cent survival rate were observed in T3 and T4 diet fed group while the survival rate was 91.11% in T1 control diet fed group. For growth profile final weight gain, final length gain, specific growth rate and feed conversion ratio were measured. Similarly, proximate analyses of all the treated diets were assayed with SGOT, SGPT and ALP. There was significant (p<0.05) differences in weight gain, length gain and specific growth rate in treated diet fed group to that of control diet fed group. Carp fed with T4 diet (0.4%) showed higher length gain, weight gain and SGR as compared to others while higher decreasing trend were observed in feed conversion ratio (FCR) of T4 diet. Growth rate was 87.89% higher in T4 diet fed group while it was only 53.68% in control diet fed group. Significant decreasing trend were observed in SGOT, SGPT and ALP in all the treated diet fed group but the lowest decreasing trend were in T4 diet fed group. It can be concluded that a minimum amount of 0.4 g lapsi fruit extracts kg -1 is sufficient to be added in diet for good serum enzymes levels and growth performances of common carp. Keywords: Carp growth, proximate analysis, survival, SGOT, SGPT and ALP 1. Introduction Aquaculture is probably the fastest growing food-producing sector, now accounts for nearly 50 percent of the world's food fish. Aquaculture in Nepal is basically small but contributes 3% to the agricultural GDP. River is the major source of capture fishery covering 3, 95, 000 ha. of the surface of natural water resources. Around 75,000 people are engaged in aquaculture with net fish production of 64,900 Mt. (culture fisheries 43,400 Mt. and capture fisheries 21,500 Mt.) in the year 2014 [1] against 57,500 tonnes in fiscal 2012-13. The present annual fish production in Nepal is 69,500 Mt [2] . The country’s fish production has not been able to meet local demand despite a rapid growth in fish farming however; around 80 percent of the domestic requirement of fish is fulfilled by local production while the rest is met by imports. In Nepal, many fishermen, their families and others are engaged in capture fisheries, which represent nearly 0.28% of the total population of Nepal. Lapsi Choerospondias axillaris (Roxb.) of family Anacardiaceae is a large, dioecious and deciduous fruit tree. The tree is native to Nepal [3] found growing in hills between 850-1900 m above the sea level and has also been reported from various countries like India, China, Thailand, Japan, Vietnam and Mongolia [4] . The fruits are rich in vitamin C content [5] and are used as a medicinal plant to enhance the immune system of the body [6] . The lapsi fruits contain phenolic and flavonoid compounds [7, 8] . The secondary products of medicinal plants and many edible plants contain phenolic compounds [9] which serve as antioxidants. So there are potential benefits of consuming phenolic rich foods [10] . Thus, keeping these things in mind an experiment was carried out in the wet laboratory of Central Department of Zoology, Tribhuvan University, Kirtipur to understand the antioxidant activities of lapsi fruits on carp growth. International Journal of Applied Research 2016; 2(9): 01-07