Int.J.Curr.Microbiol.App.Sci (2018) Special Issue-7: 2895-2900 2895 Original Research Article Effect of Replacing Concentrate Mixture with Moringa Leaves (Moringa oleifera) on Performance of Lactating Bengal Goats in Kishanganj District of Bihar, India R.K. Choudhary 1 , A. Roy 2* , P.S. Roy 2 , K.M. Singh 1 and P. Kumar 3 1 Krishi Vigyan Kendra, Kishanganj, Bihar Agricultural University, Sabour, Bihar, India 2 Murshidabad Krishi Vigyan Kendra, West Bengal University of Animal and Fishery Sciences, W.B., India 3 Department of Veterinary Extension, Bihar Veterinary College, Patna, Bihar, India *Corresponding author ABSTRACT Introduction Human population in developing countries (Africa, Asia and the Americas) is increasing rapidly (Allen, 1983). Jasiorowski (1975) stated that world demand for animal protein is growing continuously. The main reason for the present low per capita consumption of animal protein is the low livestock productivity rather than the low livestock numbers (Jasiorowski, 1975; FAO, 1994). Among animal protein goat rearing for its meat is an important sector of the agro-economy in India and in Indian sub-continents. Low capital investments and higher economic returns have been the unique features of small and marginal goat production systems (Devendra, 2013). Goat meat has provided health promoting constituents to health conscious consumers and thus contribution of goats is increasing to the rising demand of animal products. The productivity of small ruminants in most tropical countries is generally low, mainly due to poor quality and inadequacy of available feeds. Protein is the most expensive feed ingredient in animal ration and there was always shortage in its supply particularly in developing countries. This shortage is very critical in both human and animal nutrition (Yagoub and Talha, 2009). Moreover, conventional feed ingredients International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Special Issue-7 pp. 2895-2900 Journal homepage: http://www.ijcmas.com The experiment was conducted on Bengal female goat’s to evaluate the effect feeding moringa leaves on body weight, growth rate, milk yield and composition changes. Twelve (18) does of Bengal goat aged 13-16 months were used in these experiments. The goats were divided randomly into three groups; each group (6 females) in complete randomized design. The results revealed that the group three (T3) which fed 50% concentrate mixture + 50% moringa leaves showed the highest growth rate as 34.64 g/day compared with other feeds. The 50% inclusion of moringa leaves in concentrate mixture increased milk yield (330g/day), fat% (3.12%), lactose% (4.02%) and solid non-fat% (8.08%). An inclusion rate of 50% moringa leaves (replacing 50% of concentrate mixture) in the diet was the most suitable level for lactating goats under the current experiment conditions. Keywords Bengal goats, moringa, concentrate mixture, body weight, milk yield