Abstract
A nucleus-breeding flock of selected Brown Bengal goat was established in the Bangladesh Livestock Research Institute (BLRI), Regional Station, Naikhongchari, Bandarban, with the objective of characterization, conservation and improvement of the breed. A total of 69 does of different generations (Foundation = 07, Generation one = 32, Generation two = 23 and Generation three = 07.) and 07 bucks (All were first generation) were used to study the genetic parameters of Brown Bengal goat on productive and reproductive traits. The studied Animals were bred naturally. Goats were reared under semi-intensive management system in which goats were browsing in nature and allowed to graze in field as well as mounting in hills. All goats were housed in a plastic made floor house and allowed to graze 6-8 hours in a day and concentrate was offered twice daily during morning and evening at the rate of 1% of their body weight per day. The adult body weight of hilly goat was 20.95 kg. The phenotypic characteristics like the face, horn, ear and udder length were 15.56, 7.18, 12.19 and 12.67 cm respectively. On the other hand the hearth girth, front leg, hind leg and body length were 61.51, 46.8, 49.48 and 55.24 cm respectively. The gestation length, kidding to first heat, kidding to conception and kidding interval were 148.52 ± 1.06, 33.48 ± 2.85, 33.40 ± 1.98 and 176.86 ± 1.98 days, respectively. According to parity the GL, AFH, KC and KI were not followed trends up to 3rd parity but kid birth weight was increasing trends with increasing parity up to fifth. The birth weight of male kid (1.25 ± 0.25 kg) was higher than that of female kid (1.13± 0.27 kg). The highest birth weight (1.24±0.02 kg) was found in single birth. According to litter size the birth weight of single kid (1.24 ± 0.01 kg) stood first followed by twine (1.20 ± 0.01), triplet (1.1±0.03 kg) and quadruplet kids (0.93±0.08 kg). . The productive and reproductive performances of brown Bengal goat were not affected by parity. Birth weights of kids were significantly varied with birth type.Asian J. Med. Biol. Res. September 2016, 2(3): 477-482
Highlights
The hilly goats are available at hilly districts of Bangladesh
Animal used The data used in the experiment were from “Community based hilly goat development program at hilly regions at Naikhongchari” project conducted at Bangladesh Livestock Research Institute, Regional Station, Naikhongchari, Bandarban
Selection was mostly based on phenotypic characteristics viz. body size, conformation, weight for age, their ancestral history on production and reproduction and on dam performance
Summary
The hilly goats are available at hilly districts of Bangladesh. There are reputed to be very hardy and capable of thriving in any adverse environmental condition. The hilly goats are a small size goats and known to be famous for its high adptability, fertility, prolificacy (Talukder et al, 2009). Systematic information on genetic and phenotypic parameters at hilly goats is very limited. As hilly goats are being reared primarily for meat production, body weight and growth rate to be considered as the most important factors. Detailed knowledge of genetic variation within and among different breeds in very important for understanding and developing endogenous economic genetic traits of breed (Yeo et al, 2000). The main aim of this study is to characterize hilly goats by qualitative and quantitative measurement in ultimate production profile. It seems essential to identify and quantify the parameters by which hilly goats can be described distinctively from others. The majorities of the tribal people live in the hilly forests with
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