Veterinary Sciences: Research and Reviews June 2021 | Volume 7 | Issue 1 | Page 69 Abstract | Te study was conducted at Kishoreganj, Bangladesh to evaluate the productive and reproductive performance of Sahiwal × Local (SL× L), Friesian × Local (F×L), Sindhi× Local (S×L) crossbred during the period of July 2019 to January 2020. A total of 162 crossbred dairy cows under 3 genotypes were studied on the basis of productive and reproductive performances. Te average age of puberty of L×F, L×SL and L×S crossbred cattle were 23.7, 26.5 and 29.5 months, respectively. Te average age at frst fertile service for L×F, L×SL and L×S crossbreds’ cattle were 24.2, 27.0 and 31.0 months, respectively. Te highest gestation length was 285 days and it was for L×S crossbred cattle. Te lowest gestation length was 273 days and it was for L×F crossbred cattle. Te highest lactation length was observed in case of L×F crossbred (300 days) and lowest was found in case of L×S crossbred (220 days). Te highest number of services per conception was 1.66 and it was for L×SL crossbred cattle. Te lowest number of services per conception was 1.61 and it was for L×F crossbred cattle. Te average post-partum heat period of L×F, L×SL and L×S crossbreds were 114, 125 and 127days, respectively. Te highest Post-Partum Heat Period (PPHP) was 127 days found in case of L×S crossbred cows. Te lowest PPHP was found in case of L×F crossbred cows (114 days). Te overall productive and reproductive performance of diferent crossbred were varied. Judging from the overall analysis of the results, it may be concluded that production and reproduction performances of Holstein crossbred are superior to other dairy crossbred in Kishoreganj, Bangladesh. Mustasim Famous 1 *, Asim Chakrabartty Aditya 2 , Shahabuddin Ahmed 3 and Sabuj Sutradhar 2 1 Department of Livestock Production and Management, Khulna Agricultural University, Khulna, Bangladesh; 2 Department of Genetics and Animal Breeding, Sylhet Agricultural University, Sylhet, Bangladesh; 3 Department of Animal Nutrition, Khulna Agricultural University, Khulna, Bangladesh. Introduction B angladesh is an agriculture based densely populated country where 51.88% of people are engaged in agricultural sector (BBS, 2018). Livestock plays a crucial role in the livelihood of a large portion of the population. Te magnitude of the contribution of the livestock sub-sector to the GDP is 1.66 percent where it generates 13 percent of the total foreign exchange earnings and provides full-time employment to about 20 percent of the rural population (BOS, 2016). Bangladesh has a high density of cattle population. Te total livestock population of Bangladesh is 412.24 million among them cattle are 24.39 million in 2019-20 year. (DLS, 2020). Besides this large population they do not conform to any particular Editor | Muhammad Abubakar, National Veterinary Laboratories, Park Road, Islamabad, Pakistan. Received | March 30, 2021; Accepted | April 28, 2021; Published | May 30, 2021 *Correspondence | Mustasim Famous, Department of Livestock Production and Management, Faculty of Veterinary, Animal and Biomedical Sciences, Khulna Agricultural University, Khulna-9100, Bangladesh; Email: mustasimfamous1995@gmail.com Citation | Famous, M., A.C. Aditya, S. Ahmed and S. Sutradhar. 2021. Productive and reproductive performance of diferent crossbred dairy cattle at Kishoreganj, Bangladesh. Veterinary Sciences: Research and Reviews, 7(1): 69-76. DOI | http://dx.doi.org/10.17582/journal.vsrr/2021.7.1.69.76 Keywords | Crossbred, Productive trait, Reproductive trait, Milk yield, Performances Productive and Reproductive Performance of Different Crossbred Dairy Cattle at Kishoreganj, Bangladesh Research Article