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Reproductive Efficiency of BLRI Cattle Breed-1 at Farm Condition

G. K. Deb
Animal Production Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh

M. M. R. Mufti
Animal Production Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh

M. P. Mostari
Animal Production Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh

K. S. Huque
Chief Scientific Officer,
Animal Production Research Division, Bangladesh Livestock Research Division, Savar, Dhaka-1341, Bangladesh,

Abstract/ Executive Summary:

The BLRI Cattle Breed 1 (BCB-1) is a native cattle breed developed by Bangladesh Livestock Research Institute (BLRI) through selective breeding among indigenous cattle of Bangladesh. Data asserted from record sheets of 529 animals maintained during 1992 to 2006 were analyzed to evaluate the reproductive efficiency of BCB-1 cattle in different generations, seasons and parities. The highest percent of animals showed heat during summer season (36.88%) followed by rainy (35.73%) and winter season (27.39%). The highest percent of calving was recorded in summer (43.1%) followed by rainy (31%) and winter (26%). Sex ratio of male: female calves born according to season was the highest in summer (106.31:100) intermediate in rainy (106.06: 100) and lowest in winter (105.00:100). Age at first heat (AFH), age at first calving (AFC), calving interval (CI), service per conception (SPC), gestation length (GL) and post partum heat period (PPHP) of BCB-1 cows were 843.65±17.77, 1225.24±258.92, 451.65±6.51, 1.50±0.83, 283.31±11.50, and 105.51±3.95 days, respectively. AFS and PPHP varied with generation (p<0.01) and that of SPC and PPHP with parity of dams (p<0.05). However, AFC, GL and CI of BCB-1 females did not vary with parity, generation or season of birth. It was concluded that the overall reproductive performances of BCB-1 cattle are within the range of other indigenous cattle of Bangladesh and the at such results of reproductive characteristics may be used for planning cattle breeding strategy of the country.

Keywords: BCB-1, Reproductive efficiencies, Cattle

Location: The Cattle Research Farm, Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka, Bangladesh

Start Date: 00-00-1992

End Date: 00-00-2006

Program Area: Animal Health and Management

Commodity: Cattle

Objectives:

To elucidate reproduction characteristics of BLRI Cattle Breed-1 with respect to generations, seasons and ages of the cow as described by parity.

Methodology:

The experimental data of the present study were collected from the record sheets maintained at the Cattle Research Farm, Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka. Data recorded during the period from 1992 to 2006 were included in this study. Seasons of the year were classified as winter (October-January), summer (February- May) and rainy (June-September). The recorded data were within 6 parities of cows belonging to five generations (foundation to generation four). In general, heifers and cows were allowed to graze kept on the naturally grown grasses for 4 to 5 hours a day and a mixture of concentrate (wheat bran, khesari bran, til oil cake, soya meal, fish meal, salt) feeds was supplied twice daily (morning and afternoon). Green grass or silage depending on their availability fed to the animals in different period of a year. Urea-molasses treated straw used as basal feed in absence of green grass or silage. Management practices were more or less similar throughout the rearing period. No extra prenatal care and management applied to the animals in the herd. There were no special management cares for dry, pregnant and milking cows other than to supply some more concentrate mixture to the milking cows. However, the amount of concentrates supplied per animal per day depended on its availability. Sometimes animals were kept without any concentrates for days and in some cases only on wheat bran. The collected data were tabulated and analyzed following univariate analysis of Generalized Linear Model (GLM) procedure using SPSSx computer package. The differences in means were tested using least significant difference (LSD) method.

Source of Information: Progress. Agric. 19 (2) : 85-92, 2008 ISSN 1017-8139

Article Link (Online Journal): http://www.banglajol.info/index.php/PA/article/view/16948/11901

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It may be concluded that most of the traits of BCB-1 were found independent over generation, parity and season of birth of animal. The reproductive characteristics of BCB-1 cattle seem to be very similar to other indigenous cattle of the country.

Knowledge Management: Journal