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Adaptability and Survivability of Different Crossbreds Cattle Under Commercial Dairy Farming Conditions in Chittagong Area

Azam M A
Department of Genetics and Animal Breeding, Chittagong Veterinary and Animal Sciences University, Khulshi, Chittagong-4225, Bangladesh.

han M KI
Department of Genetics and Animal Breeding, Chittagong Veterinary and Animal Sciences University, Khulshi, Chittagong-4225, Bangladesh.

Das A
Department of Genetics and Animal Breeding, Chittagong Veterinary and Animal Sciences University, Khulshi, Chittagong-4225, Bangladesh.

Abstract/ Executive Summary:

The present study was undertaken to investigate the adaptability and survivability of different crossbred dairy cows under commercial farming conditions in Chittagong, Bangladesh. Different cattle genotypes (Holstein × Local, Sahiwal × Local, Sahiwal × Holstein and Jersey × Local) were found in the studied farms. The percentages of Holstein × Local was (58.94%) higher than other genotype. The survivability of Holstein × Local, Sahiwal × Local, Sahiwal × Holstein and Jersey × Local calves were 84.0±3.90, 100, 97.1±5.48 and 100 percent, respectively. The survivability of calves and cows were significantly different (P<0.05) among genotype. Survivability of bull-calves and heifers were similar for all the genotypes.

Keywords: Genotypes, Adaptability, Survivability, Dairy farm.

Location: Chittagong area

Start Date: 00-06-2011

End Date: 00-11-2011

Program Area: Animal Health and Management

Commodity: Cattle

Objectives:

The current study was addressed under the commercial dairy farming conditions of Chittagong, Bangladesh, with the following objectives (i) to know the adaptability and survivability of different crossbred dairy cows under commercial dairy farming; and (ii) to identify the factors associated with survivability and adaptability of different crossbred dairy cows.

Methodology:

A questionnaire was designed to collect the relevant information of survivability and adaptability of different dairy cattle breeds under commercial dairy farming in Chittagong district of Bangladesh. During June to November, 2011 a total of 8 commercial dairy farms were surveyed. The criteria for chosen the studied farm was: the farm should have at least 20 milking cows of mixed breeds (Local, Friesian, Sahiwal, Jersey and their crosses: Local × Friesian, Sahiwal × Local, Sahiwal × Friesian, Friesian × Local, Jersey ×Local). The criteria that are surveyed were (i) Number of total cattle in each breed of the farm; (ii) Number of calves, heifers, bull calves, bulls, milking cows and dry cows etc. according to age; (iii) Missing of animals due to sell, slaughter, death was also recorded; and (iv) Other management and rearing information such as, breeding, feeding, housing health care, vaccination, etc. Data were collected by the researcher from the selected farms by direct visit through interviewing and direct observation. Some information was collected from farmers records (those who have records). The age of the animals were estimated as per the dentition of the animals according to Johnson [7]. The survivability of different age groups was calculated by using the following equation and was expressed as percentage. Sur = 1- S - R - D Where, Sur = Survivability. S = Number of sale. R = Number of replacement. D = Number of death. The collected data were edited and were calculated the mean and standard deviation of survivability and percentages of breeds, different categories of animal and different ages of cows under different farms by using Microsoft Excel. The differences between means of different genotypes were performed using the least significant difference test at P ≤ 0.05 and P ≤ 0. 01.

Source of Information: International Journal of Natural Sciences (2012), 2(3):67-70

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

From the present study, it was found that farmers in Chittagong area reared cows with Holstein genetics in higher proportion than other genotypes. Holstein genetics remain longer period within the herd than other. The survivability of Sahiwal × Local and Jersey × Local crossbred calves were found to be higher. In spite of the lower survivability of Friesian × Local crossbred calves farmers of Chittagong region kept this crossbred more in number due to higher milk production and availability of replacement heifers than local and other genotypes. From this study, it can be recommended that Holstein× Local crossbred could be good option for future selection of cattle rearing in Bangladesh perspective. The main limitations of the study were small number of records per genotype that affected the results of the study. Therefore, further studies with higher sample size are recommended.

Knowledge Management: Journal