Global Advanced Research Journal of Agricultural Science (GARJAS) ISSN: 2315-5094
June 2018 Vol. 7(6): pp. 170-175
Copyright © 2018 Global Advanced Research Journals

Full Length Research Paper

Ex situ productive and reproductive performances of Munshiganj Cattle

SMJ Hossain, MFH Miraz*, GK Deb, MF Afroz, SM Amanullah, MA Kabir and MM Rahman

Biotechnology Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.

*Corresponding Author's Email: miraz.blri@gmal.com

Accepted 19 May, 2018

Abstract

Munshiganj cattle (MC) are one of the promising varieties of indigenous cattle genetic resources in Bangladesh generally found in the Munshiganj district and its surrounding areas. Farmers are replacing MC with high yielding crossbred cattle and population of MC is rapidly declining in their breeding tract. Considering the facts steps has been taken by BLRI for conservation, characterization and subsequent improvement of this valuable germplasmin BLRI. A mini nucleus herd was established in BLRI and this herd has been enlarged with a total population of 30 animals including 10 cows, 4 breeding bulls, 8 heifer calves and 8 bull calves. Different productive and reproductive performance was recorded in ex situ condition. Semen was collected form 3 sexually matured Munsiganj bull and collected semen was analyzed and  diluted with Tris- egg -yolk citrate diluter with proper ratio considering the concentration and motility of the fresh semen . After 4hr equilibration semen was frozen with liquid nitrogen vapor with a programmable bio freezer (Minitube, Germany) at -140ºc and finally stored at -196ºc liquid nitrogen and were observed after 24 hr of storage for post thaw semen quality evaluation. The average birth weights of male calves (17.79±1.0 kg) were higher than average of those of female calves (17.28±0.95 kg). The survivability of both sexes was 100% in the herd. Average gestation length (GL), postpartum heat period (PPH) and number of services for each conception (NSPC) were 279.17± 3.76 days,  63.42± 22.08 days and 1.58± 0.79 respectively. In BLRI nucleus herd, average lactation length, yield/lactation and daily milk yield/cow was found 176.25±26.47days, 731.53±140.61 L and 4.13±0.39 L respectively. The fresh semen was thick creamy colour with an average volume and concentration of 4.273±0.54 ml and 1796 ±122.29 milion/ml respectively. Total, progressive, static and slow motility of the fresh and post thawed semen samples were (84.69 ±4.28, 52.97±3.13), (72.53 ± 2.91, 43.71±1.57), (15.31±4.28, 47.03 ±3.13) and (1.23± 0.60, 0.58± 0.18) respectively. Fat(%), protein (%), lactose (%) and SNF (%)was 5.61±0.29, 4.31±0.04, 6.19±0.05 and 11.43±0.09 respectively where fat and protein content varies significantly between morning and evening milk. Considering the results it can be concluded that Munsiganj cattle is a very promising and potential cattle variety of Bangladesh. Long term conservation and multiplication programme in grater scale should be taken immediately to save this variety before extinction.

Keywords: Conservation, Munshiganj cattle, Nucleus herd, Community.

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