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Growth Performance of Graded Brahman Calves in Selected Areas of Mymensingh District

Kamrun Naher Papry
Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Shahanaj Ferdousi Shejuty
Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

A. K. Fazlul Haque Bhuiyan
Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Md. Azharul Hoque
Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Abstract/ Executive Summary:

The objectives of this study were to know the growth performance of graded Brahman calves, the phenotypic and genetic correlations between different growth traits and factors related to growth performance of Brahman graded calves in selected areas of Mymensingh district. Data on 422 Brahman graded calves were collected under the project entitled “Genetic improvement of indigenous cattle for beef production through crossing with Brahman cattle by farmers’ participatory breeding approach in Bangladesh” under the department of Animal Breeding and Genetics, BAU, Mymensingh. Statistical analyses of all the parameters were done using Statistical Analysis System (SAS). The growth performance and average daily gain of male calves were higher than those in female calves at different growth stages. The highest birth weight and weight at different stages of calves were higher in Bhabakhali and lowest in Dowhakhula area. Sex and area had significant effect (p<0.05) on different growth traits of Brahman crossbred calves. Breeding bull had significant effect (p<0.05) on nine-month and twelve weight and average daily gain from birth up to twelve month of age. Feeding system had significant effect (p<0.05) on different growth traits. Improve feeding would have positive impact on growth performance quite natural. Growth traits were positively correlated to each other and strong phenotypic correlations were observed between weight at nine and twelve-month (0.95), six- and twelve-month (0.94) and six- and nine-month (0.93). It may be concluded that further study with larger sample sizes covering more factors related to growth performance of graded Brahman calves would be required to draw a better conclusion in this regard.

Keywords: Brahman cross calves, Growth performance, Growth traits

Location: The three villages were considered named Boera, Bhabokhali and Dowhakhola in Mymensingh district, Bangladesh

Start Date: 00-05-2018

End Date:

Program Area: Variety and Species

Commodity: Calves

Objectives:

To know the growth performance, the phenotypic and genetic correlations between different growth traits and factors related to growth performance of graded Brahman calves in selected areas of Mymensingh district.

Methodology:

Data collection: The data for this present experiment was collected on the growth performance of 422 Brahman cross (25%) calves from ongoing project under the Department of Animal Breeding and Genetics entitled, “Genetic improvement of indigenous cattle for beef production through crossing with Brahman cattle by farmers’ participatory breeding approach in Bangladesh”. In this project, 4 (four) Brahman crossbred (graded) breeding bulls were selected (Bull ID: ABG011, ABG012, ABG013 and ABG014) and used on the basis of their average daily gain, physical appearance and libido. The selected bulls were reared at the Artificial Insemination Center of Bangladesh Agricultural University for semen collection in order to inseminate the indigenous cow to improve beef production potentialities in the progeny. Weight of graded calves were taken by using digital weighing balance from birth upto six-month of age. The study was conducted between May 2018 to March 2019. Study site In this study three villages were considered named Boera, Bhabokhali and Dowhakhola in Mymensingh district and were monitored to know the effect of some factors related to growth performance. Traits under study: Studied traits on Brahman graded calves were bull, sex, feeding system, and area of study. Population size and data structure: Deshi cows were inseminated with the graded Brahman (50% Brahman bull×50% indigenous) semen in the selected areas of Mymensingh city, Bangladesh and a total of 4000 of 25% crossbred (graded) calves were produced and out of them data on 422 (those have all records) were considered in this study. Population size and data structure of Brahman crossbred calves are presented. Statistical analysis After collecting data on graded calves from record sheet the AI field worker and Upazila Livestock Office of the
selected areas, pre-tabulation task of the collected data was done and records on graded progeny were entered in Excel sheets of Microsoft office computer program for further analyses. Effect of area, bull, sex and feed on growth performance of graded were estimated on birth weights three-month, six-month, nine-month, twelvemonth and average daily gain. The sorted data were analyzed to obtain results of ANOVA by using Statistical Analysis System (SAS, 1998) computer package and DUNCAN test was performed to separate mean values in case of significant factors. Statistical model for growth traits Y_ijkl = μ + B_i + F_j+ S_k+ A_l + e_ijkl.Where, Y is a dependent variable (individual animal records for the animal), μ is the overall mean, B_i is the effect of bull, F_j is the effect of feeding system, S_kis the effect of sex, Al is the effect of area, e_ijkl is the residual error.

Source of Information: J Bangladesh Agril Univ 18(2): 435–441, 2020

Article Link (Online Journal): https://doi.org/10.5455/JBAU.73448

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From overall discussion it may be concluded that growth performance of Brahman graded male calves were higher at different stages, positively strong phenotypic correlation were found between different growth traits, factors related to growth performance had significant effect on growth traits of Brahman graded calves at different stages. For rearing Brahman cattle, farmers’ have lower veterinary cost because of high disease resistance, less inputs because of natural grazing and better prices of beef for a much longer period than other breed. Brahman breed may be an asset for our country, so more steps should be taken for extension and improvement of this breed. In future further study with more information and increased sample size in more areas needed to explore the breed potentiality in Bangladesh.

Knowledge Management: Journal