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Importance of Teat Characteristics in Selecting Cross-bred Dairy Cows on Milk Yield at the Villages of Tangail in Bangladesh

M. R. Islam
Senior Assistant Director
Policy and Planning Division, Palli Daridro Bimochon Foundation (PDBF), Mirpur-2, Dhaka-1216, Bangladesh and Ph.D Student of Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

M. R. Islam
Professor
Department of Agricultural Extension and Information System, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

M. M. Islam
Joint Director
Policy and Planning Division, Palli Daridro Bimochon Foundation (PDBF), Mirpur-2, Dhaka1216, Bangladesh

Abstract/ Executive Summary:

This study was conducted to find out the importance of various characteristics of teat and to study their relationship with milk yield in crossbred dairy cows. By a previously prepared module, 100 crossbred dairy cows were selected to collection of data for the various measurements and shapes of teat from the 3 villages named Fulbari, Koira and Bhatkura of Dhanbari Upazila at Tangail District in Bangladesh. The phenotypic correlation coefficients between teat measurements and test milk yield and between all possible combinations of teat measurements were significant (P<0.01), including that length and diameter of teat were related to each other and also to the milk production. A cylindrical shaped teat having middle teat length with highest milk production was found as an asset for a milch cow. It may be concluded that a well characteristics of teat is to be considered of teat is to be considered for selecting dairy cows on milk yield.

Keywords: Importance, Teat characteristics, Cross-bred dairy cows, Milk yield

Location: 3 villages named Fulbari, Koira and Bhatkura of Dhanbari Upazila at Tangail District in Bangladesh

Start Date: 00-01-2020

End Date: 00-02-2020

Program Area: Animal Health and Management

Commodity: Cow, Milk

Objectives:

The mammary system (popularly known as udder) of the cow is a most important physical asset. A large, strongly attached, well-carried, quality udder with suitable teats is very important for heavy milk production and a long period of usefulness. Size and shape of teat are important to decide the susceptibility of udder to milk yield. Moreover, these characters are believed to be associated with mastitis and milking machine. Several studies have provided documented evidence for such hypothesis. But it very unfortunate that very few works have been conducted in Bangladesh in favour of this important issue. So the present work was undertaken to measure the shape and size of teat of cross-bred dairy cows and also to find out the relationship of teat characteristics on milk yield of our cross-bred dairy cows.

Methodology:

The present research work was carried out during the period of January-February, 2020. In order to achieve the objectives of the study, a total of 100 cross-bred dairy cows were selected from 3 villages named Fulbari, Koira and Bhatkura of Dhanbari Upazila at Tangail District in Bangladesh. The following parameters such as milk yield (kg/day), length and diameter of the teat (cm), distance between teats (cm) and shape of teat were measured from each cow during the study period. The above-mentioned information were collected by the researcher himself. It was found that most of the cross-bred cows were milked twice a day, morning and evening. So, morning and evening milk yield was combined together to get the milk yield of a cow for that day. ‘Teat length’ was measured by using a vernier calipers on base of the teat. ‘Teat diameter’ was measured by using a vernier calipers on base of the teat. On the other hand, ‘distance between teats’ was measured by lightly placing 15x11 cm sheet of coarse plastic paper in contact with tips of the teats immediately after milking with spraying colouring water on teats by a syringe.

A visual appraisal was made to evaluate the shape of teat. The teats were classified into cylindrical, bottle and funnel shaped by adopting the description of Ovesen (1972). Statistical analysis such as percent, mean, standard error, coefficient of variation, correlation coefficient were done to get clean picture from the collected data.

Source of Information: IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS) e-ISSN: 2319-2380, p-ISSN: 2319-2372. Volume 13, Issue 7 Ser. IV (July 2020), PP 57-59

Article Link (Online Journal): DOI: 10.9790/2380-1307045759

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

A cylindrical-shaped teat having middle teat length with the highest milk production was found as an asset for a milch cow. It may be concluded that a well characteristic of teat is to be considered for selecting dairy cows on milk yield.

Knowledge Management: Journal