Despite of highest cattle density per km2 in Bangladesh compared with some large cattle population countries like India, Ethiopia, Brazil, etc., production of milk, meat are far below than the expectation due to large number of poor qualities indigenous cattle populations having lower milk and/or meat production, although they posses some beneficial characteristics such as heat tolerance, adapted to hot and humid climate, high rainfall, flood and swampy condition, ability to survive with low quality feedstuffs, good degree of resistance to diseases and giving more calves. However, there are some promising varieties of indigenous cattle genetic resources in Bangladesh. Munshiganj cattle (MC) are one of them. Evidences are available for the inclusion of foreign bloods in different types of crossbred cattle in Bangladesh. On the other hand, there are no evidences of foreign blood in indigenous cattle. Although, some sporadic works had so far been done for some indigenous cattle but information are scanty in case of MC. The numbers of MC are declining gradually day by day; hence they are under the threat of extinction. Therefore, under this project initiative was taken to conserve and to improve MC to fulfill the following objectives: 1) to develop a pure nucleus herd by screening from their original habitat, 2) to propagate, improve and conserve it through planned breeding and their ex-situ performance study, and 3) to develop a rearing community at their habitat and exchange of proven semen/bull. To achieve the aforesaid objectives of the project a mini nucleus herd including eight adult female cows, 4 heifers and two ready to mate bulls were collected from different parts of their own habitats. Before introduction of the animals in the nucleus herd they were properly quarantined, vaccinated and dewormed. Having establishment of nucleus all animals are being observed for their performance evaluation. Morphometic measurements of all animals were taken by measuring tape in centimeter and live body weights were taken directly by weighing balance. Milk recording from the inception of the nucleus herd is being continued and milk composition was measured by LactoStar® digital machine in the BLRI laboratory. The live body weight of adult cows was averaged 224 kg and those of males aged around 2 years were 213 kg. The mean body length, heart girth, wither height, thirl width, rump length, hip width, neck length, neck width, head length, head width, horn length, horn circumference, ear length, ear width and tail length of cows were estimated 122.0, 146.0, 106.5, 38.9, 28.9, 36.8, 41.1, 36.5, 41.9, 17.8, 19.6, 12.9, 22.8, 13.0 and 79.1 cm, respectively and those of males were 121.0, 142.5, 108.5, 41.5, 35.0, 33.0, 37.0, 40.0, 43.0, 20.0, 8.5, 14.5, 22.5, 13.5 and 87 cm, respectively. The udder length, udder breadth, teat length and teat circumference of cows were estimated 17.6, 16.6, 7.3 and 9.3 cm, respectively. The scrotal length, scrotal breadth and scrotal circumference of males were estimated 21.5, 12.0 and 29.0 cm, respectively. The daily milk yields of different cows were recorded from variable durations of different cows and found minimum as 2.4 kg (average 3.14 kg) and maximum as 6.5 kg (average 5.43 kg) with an overall mean of 4.50±0.05 kg per day, whereas, average daily milk yield of those cows in in-situ condition were ranged 3.4-4.1 kg. Daily milk yield differed significantly among cows (Table 2). Table 2 clearly shows that milk production in ex-situ is higher than in in-situ that could be due to better feeding and management practices. Milk fat, protein, lactose and SNF in morning and evening milk were 4.89 and 6.34%, 4.23 and 4.38%, 6.11 and 6.28% and 11.25 and 11.60%, respectively with overall mean of 5.61, 4.31, 6.19 and 11.43%, respectively (Table 3). Fat and protein contained in evening milk were significantly higher than morning milk, while not significantly differed for lactose and SNF content. Preliminary results show that MC cattle may be valuable indigenous cattle genetic resources of Bangladesh. As MC cattle are now under the threat of extinction, it is necessary to develop Munshiganj cattle rearing community at their own habitat and exchange of elite bull/semen.