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A Study on Productive and Reproductive Performances of Black Bengal Goat in Relation to Coat Colors

MM Mia
Professor
Department of Genetics and Animal Breeding, Faculty of Veterinary, Animal and Biomedical Sciences, Sylhet Agricultural University,

Abstract/ Executive Summary:

The present study was conducted to know the productive and reproductive performance of Black Bengal goats in relation to different coat colors. A total of 609 Black Bengal goats were selected from 35 private owned farms in Sylhet division during November 2017 to October 2018. Average birth weight and adult body weight gain after 12 months of white, solid black, black with Dutch belt spotting, and brown bezoar coat color goats were varied significantly. Birth weight is high in black with Dutch belt spotting coat and the adult weight gain after 12 months is high in solid black coat color. The average daily milk yield and the average lactation period of white, solid black, black with Dutch belt spotting, and brown bezoar coat color goats were varied significantly. The age at puberty varied according to the coat color. The age of first kidding of white, solid black, black with Dutch belt spotting and brown bezoar coat color goats did not vary significantly. The average gestation period in 1st parity, age at first conception and post-partum estrous of Black Bengal goat were not affected by the coat colors. Number of litter per kidding was higher in solid black i.e. the reproductive performance is better in solid black coated goats than that of other coat colors. From the present study, it may be concluded that the performances of solid black color goats were better than other coat colors in terms of adult weight of does, daily milk yield, lactation period, age at puberty, service per conception and litter size.

Keywords: Black Bengal Goat, Coat Color, Productive Performance, Reproductive Performance.

Location: 35 Private owned farms in Sylhet division

Start Date: 01-11-2017

End Date: 11-10-2018

Program Area: Knowledge Management

Commodity: Goat

Objectives:

The present study was conducted to assess the productive and reproductive performance of Black Bengal goat in relation to their coat colors.

Methodology:

A total of 609 BB goats were selected from 35 private owned farms in Sylhet division during November 2017 to October 2018.Data on birth weight, age at puberty, age at first conception, gestation period and age at first kidding, post-partum estrous, kidding interval, was taken from 50 kids, 69 goats, 58 does, 56 does and 38 does, 67 does, 40 does, respectively. Data on milk production, lactation period, number of services per conception, litter size and adult body weight of does at first parity were taken from 38 does, 43 does, 63 does, 45 does and 42 does, respectively from different farms. Goats were maintained by farmers themselves under semi intensive system. The goats were kept in open air with shed at day time but confined at night. Goats were allowed to graze in roadside or agricultural land supplemented with grain feeds. The does were served naturally when they were in estrous. Routine vaccination and deworming was practiced by the farmers and animals were treated by veterinarians in case of diseases. The productive traits analyzed in this study were birth weight, lactation period, milk yield, litter size and adult weight. The reproductive traits analyzed were age at puberty, age at first conception, gestation period, age at first kidding, kidding interval, postpartum estrous and number of services per conception.

Source of Information: J. Sylhet Agril. Univ. Vol: 5, No:2, Year: 2018

Article Link (Online Journal): www.jsau.com.bd

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the present study it may be conclude that the performances of solid black color goats are better than other coat colors in terms of adult weight of does, daily milk yield, lactation period, age at puberty, number of services per conception and litter size. It may be suggested that solid black coat color goat performed better than the white, black with Dutch belt spotting and brown bezoar coat color. Further studies may be conducted to determine specific genes responsible for better performance in solid black color Black Bengal goats.

Knowledge Management: Journal