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Reproductive Performance of Red Chittagong Cattle in a Nucleus Herd

M. A. Habib
Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh, Bangladesh.

A. K. F. H. Bhuiyan
Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh, Bangladesh.

M. R. Amin1
Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh, Bangladesh.

Abstract/ Executive Summary:

The present study was undertaken to estimate the performance of some reproductive traits of Red Chittagong Cattle (RCC) is an important indigenous Farm Animal Genetic Resource of Bangladesh having some efficient reproductive capabilities. The effect of parity on these traits was also studied. The study was conducted in the nucleus herd of RCC Project at Bangladesh Agricultural University (BAU) dairy farm taking data from 2005 to 2008. The traits considered for this study were age at sexual maturity, age at first calving, number of service per conception, conception rate, calving interval, post partum heat period, gestation length and service period of RCC cows. The mean (±SE) values of the said traits are 28.75 ± 1.26 months, 40.93 ± 1.74 months, 1.55 ± 0.08, 78.91 ± 2.82 %, 14.42 ± 0.33 months, 127.71 ± 7.02 days, 282.11 ± 0.58 days and 151.72 ± 6.83 days, respectively. All the traits studied did not differ significantly (P>0.05) between different parities.

Keywords: RCC, Nucleus herd, Reproductive traits

Location: BAU, Mymensingh

Start Date: 00-00-2005

End Date: 00-00-2008

Program Area: Variety and Species

Commodity: Cattle

Objectives:

To know the reproductive potential of RCC maintained under farm condition of Bangladesh

Methodology:

Source of data: The data used in this study were collected from the nucleus herd of the USDA funded RCC project at Bangladesh Agricultural University, Mymensingh during the period from 2005-2008. Feeding and management The animals of RCC nucleus herd were provided with three different kinds of feeds such as concentrate, green grass and straw where straw was the basal diet added with urea and molasses. Animals were stall fed throughout the year. They were grazed at seldom due to lack of facility. Urea-molasses-straw or some times only molasses-straw were provided ad libitum throughout the year. Green forages like german, sorghum, maize and roadside grasses were provided with limited amount due to scarcity. Concentrate mixture (wheat bran, rice polish, corn powder, oil cake, soybean meal, di-calcium phosphate, salt and vitamin-mineral premix) was supplied once a day in the morning at the rate of 600 g/lactating cow, 500 g/pregnant cow and 400 g/dry cow and heifers. Regular vaccination (against FMD and Anthrax disease), deworming (according to incidence on faecal sample examination) and medicare were also performed whenever needed. Traits considered for the study Traits included for this study were age at sexual maturity, age at first calving, number of services per conception, conception rate, calving interval, post partum heat period, gestation length and service period. Age at puberty (AP): The length of time between the date of birth and the date of showing first heat in life of an individual is termed as AP. This trait is positively correlated with the generation interval and has an economic value to the breeders because farmers always expect calf earlier from a heifer that is related to the age at sexual maturity of an individual. Age at first calving (AFC): The AFC is the age of an individual when first give birth newborn in life. Number of services per conception (NSPC): It refers to how many services are required for a successful conception of an individual and is calculated by dividing the number of conceptions with the number of inseminations. The lower the number of services for each conception, the higher the reproductive efficiency of the cow or breeding program. Conception rate (CR): It represents the ratio of number of conceptions to number of services and is expressed as percentage. Calving interval (CI): The CI refers to the time elapses between two successive calving. This trait is very much important to the breeders because the lowest the calving interval the highest the lifetime calf production. Post partum heat period (PPHP): It is the time between the date of calving to the date of first subsequent estrous. This period is required for resumption of ovarian activity and uterine involution. This trait to refers the reproductive efficiency of an individual because the shortest the post-partum heat period the highest the calf production in their lifespan. Gestation length (GL): The GL is the period between the date of fertile service and the date of calving. This period is almost invariable within individual in a breed or type.

Source of Information: Bang. J. Anim. Sci. 2010, 39(1&2) : 9 – 19 ISSN 0003-3588

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The mean (±SE) values of the said traits are 28.75 ± 1.26 months, 40.93 ± 1.74 months, 1.55 ± 0.08, 78.91 ± 2.82 %, 14.42 ± 0.33 months, 127.71 ± 7.02 days, 282.11 ± 0.58 days and 151.72 ± 6.83 days, respectively. All the traits studied did not differ significantly (P>0.05) between different parities.From the results of this study it may be concluded that proper feeding, management, heat detection and timely insemination is necessary for improvement of reproductive traits of RCC. Therefore, there is still need for more research for a genetic improvement program of RCC in farmers herd in order to make smallholder dairy farming more profitable at the subsistence farming conditions of Bangladesh

Knowledge Management: Journal