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A Comparative Study on Reproductive Performance and Productivity of the Black Bengal and Crossbred Goat at Atrai, Bangladesh

Mohammad Mahmudul Hassan
Department of Physiology, Biochemistry and Pharmacology, Chittagong Veterinary and Animal Sciences University

S.M. Niaz Mahmud
Dept. of Genetics and Animal Breeding, Chittagong Veterinary and Animal Sciences University, Khulshi, Chittagong

S.K.M. Azizul Islam
Department of Physiology, Biochemistry and Pharmacology, Chittagong Veterinary and Animal Sciences University

Omar Faruk Miazi
Dept. of Genetics and Animal Breeding, Chittagong Veterinary and Animal Sciences University, Khulshi, Chittagong

Abstract/ Executive Summary:

The present investigation was carried out to detect the status of different productive and reproductive parameters of Black Bengal and Crossbred goats at Bandaikhara village under Atrai Upazilla of Naogaon district during the period of September to December/2005. The average age at first sign of heat of Black Bengal goats was better than that of Crossbred goats. In Black Bengal goat the average age at first kidding was 360.5±10 days, whereas, in crossbred goats it was 411.5±15.5 day. Significantly (P<0.01) lower the post partum heat period in Black Bengal goat than the crossbred goat. The average kidding interval in Black Bengal and Crossbred goats were 179±20 and 270±22 days respectively and differences are statistically significant (P<0.01). The usual numbers of kids at one time in Black Bengal goats vary from single to quadruplet. On the other hand, litter size of crossbred goat was single or twin. The average birth weight of Black Bengal goat was lower than Crossbred goats, which are statistically significant (P<0.05). The average body weight gain after 365 days is better in Crossbred than Black Bengal goats and statistically significant (P<0.01). The average milk yield in Crossbred goat was 1.05 liter/day, whereas, in Black Bengal goat, it produces milk that only nourished its kids. It was concluded that the reproductive performance like early maturity, larger litter size, shorter postpartum period, minimum kidding interval are better in Black Bengal goat. On the other hand productive performance like higher birth weight, maximum body weight gain, high milk yield, longer lactation length are suitable in crossbred goat.

Keywords: Black Bengal goat, Crossbred goat, Production, Reproduction, Performance

Location: Atrai Upazilla of Naogaon district

Start Date: 01-09-2005

End Date: 31-12-2005

Program Area: Animal Health and Management

Commodity: Goat

Objectives:

The present study was therefore undertaken to asses the reproductive performance and productivity of BBGs and the available crossbred goat (CBGs).

Methodology:

The data for reproductive performance such as age of puberty (days), age at insemination, age at first kidding (days), ), litter size (number), post partum heat period (days), kidding interval (days) and productivity such as birth weight (kg), body weight gain (kg), milk production (litre/day), lactation length (days) were taken from the different families (goat keeper) using a pre-structured questionnaire. The study area was selected on a village named Bandaikhara under the Atrai Upazilla in Naogaon District due to large number of goats are raised in this area. A total of 159 inhabitant were included in this study which comprised 718 adult female (doe) goats of which BBGs and CBGs were 662 and 56 respectively and 68 adult male goats of which BBGs and CBGs were 50 and 18 respectively. The research work was conducted from September to December /2005 and the data was collected through direct interviewing method (randomly) from the goats owner.The survey schedule was developed according to the objectives of the study. Survey sheet was prepared to collect the desired information from the goats owner and sheet contains reproductive performance such as age of puberty in days, age at insemination, age at first kidding in days, litter size in number, post partum heat period in days, kidding interval in days and productivity such as birth weight in kg, body weight gain in kg at 365 days, milk production in litre per-day, lactation length in days. The obtained information was loaded and stored on to the Excel spread sheet. Then data was analyzed using STATA (Stata Corporation College Station) version 9.0. Different types of birth of kidding and their frequency were expressed in percentage.

Source of Information: Univ. j. zool. Rajshahi Univ. Vol. 26, 2007. pp. 55-57

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The average age at first sign of heat of crossbred and Black Bengal goats were 222.5± 5.5 and 196.5± 7.5 days respectively, here the duration was greater in crossbred than Black Bengal goats and statistically significant (P<0.05). The average birth weight of Black Bengal goat and Crossbred goats were 1.60±.50 and 1.90±.75 respectively and differences are statistically significant (P<0.05). The birth weight of BBGs and CBGs were 1.5 kg and 2.0 kg respectively under traditional farming condition of sub-continent. Body weight gain: The average body weight gain after 365 days in Black Bengal and Crossbred goats were 20.25±2.5 and 29.50±3.5 kg respectively and differences are statistically significant (P<0.05). The average milk production in Crossbred goat was 1.05±.50 liter/day, whereas in Black Bengal goat, it produces milk that only nourished its kids and differences are highly significant (P<0.01). Due to genetic factor Black Bengal goats yield very poor amount of milk. Lactation Period: Lactation period of Crossbred goats and Black Bengal goats were 99.25±10 and 65.50±7.5 days respectively and differences are statistically significant (P<0.05).

Knowledge Management: Journal