Bangladesh Journal of Animal Science <p>Official journal of the Bangladesh Animal Husbandry Association, Bangladesh Agricultural University, Mymensingh</p> Bangladesh Animal Husbandry Association en-US Bangladesh Journal of Animal Science 0003-3588 <p>© Bangladesh Journal of Animal Science.</p><p>Authors are required to transfer their copyright to the Bangladesh Journal of Animal Sciences.</p><p>All rights reserved. No parts of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise without the prior permission of the Bangladesh Journal of Animal Science.</p> Phenotypic characterization and production potentials of exotic goat breeds and their crosses in Rajshahi metropolitan area of Bangladesh <p>This study was conducted to investigate the morphology, morphometry and production performances of exotic goat breeds and their crossbreds available at Boalia, Shahmokhdum, Rajpara and Matihar thana under Rajshahi metropolitan city. A total of 73 animals’ information was collected from 39 exotic goat flock owners using a semi-structured questionnaire through interviewing of farmers, visual observation and on-spot measurement of the animals. Exotic goat breeds and their crosses were found predominantly higher (&gt;93%) in Rajshahi Metropolitan areas where less than 7% Black Bengal goats were identified. In most cases, deviation of breed specific coat color due to crossing between different types of crossbreds among the populations was noted. The genotype frequencies of Beetal, Kalahari, Sirohi, Jamunapari, Anglo Nubian and their crossbreds and Black Bengal goats were found to be 50.68, 15.07, 13.70, 8.22, 8.22 and 4.11%, respectively. The average mature live weight (12 to 18 months) of those corresponding exotic genotypes in male and female respectively were found 46.88±5.66, 56.07±8.03, 32.67±8.09, 59.54±7.96 and 64.06±4.67 kg, and 21.70±2.24, 22.41±3.64, 17.37±4.05, 24.5±0.5 and 27.47±6.85 kg. Irrespective of genotypes, the mean age at puberty, lactation length, litter size, kidding interval and days open were found 167.50±3.49 days, 76.61±4.90 days, 1.71±0.10, 224.44±5.56 days and 52.64 ± 2.30 days, respectively. However, none of the aforementioned traits differed significantly (P&gt;0.05) among the five different exotic genotypes. In conclusion, this study provides some basic information on the performances of exotic goat breeds or their crossbreds at Metropolitan areas under intensive management conditions which could be utilized for designing proper breeding plan in their conservation and simultaneous improvement.</p> <p><strong><em>Bang. J. Anim. Sci. 2020. 49 (2): </em></strong><strong><em>100-107</em></strong></p> EM Ahmed MR Amin R Basrin MSA Bhuiyan ##submission.copyrightStatement## 2021-05-04 2021-05-04 49 2 100 107 10.3329/bjas.v49i2.53218 Egg quality in different lines of New Hampshire and Giriraja chicken <p>This study was undertaken to evaluate the egg quality parameters of New Hampshire and Giriraja by maintaining four different flocks (lines) of New Hampshire viz. NH-Khajura, NH-Parwanipur, NH-Khumaltar and NH-Pokhara and three different flocks (lines) of Giriraja viz. GR-Pakhribas, GR-Khumaltar and GR-Tarhara. The 40-60 weeks of hatchability, fertility, external and internal egg quality parameters were studied and recorded. A total of 200 birds (40 weeks of age) of each New Hampshire and Giriraja from each line were maintained on deep litter system. Results from this study indicated the significant effect of genotype and respective lines on fertility and hatchability of eggs. Significant (<em>P</em>&lt;0.05) variation in fertility and no significant variation in hatchability for genotypes were found. However, in terms of fertility and hatchability, there were significant variations in different lines. In case of egg weight: &nbsp;no significant (<em>P</em>&lt;0.01) variation was obtained for genotype but lines comparison showed significant variation. Other external egg quality parameters like egg length, egg diameter, shape index, shell thickness were examined for evaluating the genotype and line effect. In all these external egg quality parameters, there were significant (<em>P</em>&lt;0.01) effect of both genotype and lines of birds. For internal egg qualities, yolk weight (g), yolk index, albumen weight and albumen index were checked. Genotype had no significant (<em>P</em>&lt;0.01) effect but lines had significant (<em>P</em>&lt;0.01) effect on yolk weight. In case of yolk index, both genotype and lines of bird had no significant effect. For albumen weight and albumen index, genotype of birds had no significant (<em>P</em>&lt;0.01) effect but lines of bird had significant (<em>P</em>&lt;0.01) effect on both parameters. The study showed that the egg quality parameters of NH (Khajura) were better than that of GR. Among different lines New Hampshire (Khajura) showed better performance in terms of egg quality parameter.</p> <p><strong><em>Bang. J. Anim. Sci. 2020. 49 (2): </em></strong><strong><em>108-118</em></strong></p> N Baskota M Sharma N Bhattrai D Neupane RK Yadav S Upreti ##submission.copyrightStatement## 2021-05-04 2021-05-04 49 2 108 118 10.3329/bjas.v49i2.53219 Effect of feeding Tephrosia bracteolate on the bioavailability of macro minerals in goat <p>Sixteen West African Dwarf Goats (8 bucks and 8 does) were balanced for age, sex and weight (average of 5.79±0.60 kg), to evaluate the effect of <em>Tephrosia bracteolata </em>(Tb) on macro mineral utilization. To examine the effect of <em>Tephrosia bracteolata </em>(Tb), different levels of Tb were used (Tb20, Tb40, Tb60 and Tb80). Ca absorbed (gm) ranged from 0.64 (Tb20) to 1.57 (Tb80) and Ca retention was from 0.62 (Tb20) to 1.56 (Tb80) which was partially linear. In both absorption and retention of Ca, Tb20 and Tb80 found the lowest (P&lt;0.05) and the highest (P&lt;0.05) value respectively. Like Ca, P also followed the same trend in case of retention and absorption as well. Concerning Mg, the lowest (0.41, 0.40) and the highest (0.67, 0.65) absorbed and retained value (g/day) was observed in Tb 20 and Tb 80 respectively. Tb80 showed significantly higher Na absorption than Tb20. In case of Na retention, Tb80 showed the highest (P&lt;0.05) retention than other groups. In K absorption (g/day), increasing trends (P&lt;0.05) were observed from Tb20 (0.44) to Tb80 (1.25). In case of retention, Tb80 found the highest (P&lt;0.05) K retention than other groups.&nbsp; These positive balances of minerals result linearly appreciating with the increase of <em>T. bracteolata</em> in the diets which might be due to leguminous properties in <em>T. bracteolata</em>. <em>T. bracteolata</em> can be used as a roughage source for goats without any remarkable adverse or, side or ill effects which affect the well-being of animals feeding.</p> <p><strong><em>Bang. J. Anim. Sci. 2020. 49 (2): </em></strong><strong><em>119-127</em></strong></p> AM Ogungbesan GA Adeleke OE Fasina AN Fajemisin ##submission.copyrightStatement## 2021-05-04 2021-05-04 49 2 119 127 10.3329/bjas.v49i2.53220 Reducing dairy data inconsistency through Regional Modeling Approach (RMA): a case from North-Western part of Bangladesh <p>In Bangladesh, the transformation of dairy farming from livelihood-oriented to enterprise-driven farming system might require deeper understanding on the regional differences in terms of regional potential for further dairy development. This, however, entails detailed data on dairy farm at regional level. Since the data are relatively very scarce in one hand and on the other hand, even available, are contradicting among various sources in terms of data accuracy and precision, the application of the regional modeling on the data and extrapolates to the national data and vice-versa is one of the ways to identify the possible options to improve the data availability and quality. Considering this, the current study was undertaken to assess the data inconsistency by comparing the dairy herd structure and its milk production at regional level and propose a validation tool to arrive at the national data by using the regional findings. The International Farm Comparison Network (IFCN) Regional Modeling Approach (RMA) along with the locally developed Integrated Dairy Research Network (IDRN) farm model was used. The primary data was collected from three divisions (9 districts) from the North-Western part of the country. The results revealed that proportion of household farm dominates over family and business farm while considering the total dairy cow as unit for defining the farm type. The share of the cross bred cows to the local cows is 74.6% and 24.4%, respectively. However, the proportion of lactating cows over dry cows and heifer seems to be higher in local cows (48.8%) than cross breed cows (34.2%). The average milk production for all regions is 4.49 lit/day/cow while that for cross breed is 6.23 lit and local 1.71 lit/day/cow. Using regional model and its coefficient on average milk production, herd composition, proportion of lactating cows on total milk production of DLS and IDRN revealed that IDRN new model estimates 36.5% lower milk than the DLS in 2019 and 33.5% lower in 2018. The IDRN version 1.0 and 2.0 model difference was found to 15.4% and 18.3% lower for 2018 and 2019, respectively. The model setup, calibration and validation are time-demanding and challenging tasks for these large set of data, given the scale intensive data requirements, and the need to ensure the reliability data from multiple regions. This study concludes that regional modeling is quite useful for validating the regional share of the milk production and national milk production. However, this study would recommend for using standardized for data collection, validation and thus conducting further study on the other regions and finally including all regions of the country.</p> <p><strong><em>Bang. J. Anim. Sci. 2020. 49 (2): </em></strong><strong><em>128-141</em></strong></p> MM Uddin A Akter M Tanzin MN Sultana ABM Khaleduzzaman MR Islam MS Palash BB Bruemmer ##submission.copyrightStatement## 2021-05-04 2021-05-04 49 2 128 141 10.3329/bjas.v49i2.53221 Effect of bulking materials over the composting of bio-slurry <p>Bio-slurry is considered as a good quality organic fertilizer in Bangladesh agriculture. An experiment was conducted at Bangladesh Agricultural University, Mymensingh to assess the effect of bulking materials over the composting of bio-slurry. The experiment was conducted with 4 treatments each of 3 replications. The treatments for compost preparation were, T<sub>0</sub> (50% Bio-slurry + 50% manure), T<sub>1</sub> (50% Bio-slurry + 50% manure and saw dust), T<sub>2</sub> (50% Bio-slurry + 50% manure and rice straw), T<sub>3</sub> (50% Bio-slurry + 50% manure and tree leaves). Compost moisture, pH, temperature and C: N ratio was assessed every week. Maximum temperature found in T<sub>1</sub> (34.03<sup>0</sup>C) and other treatments showed a slower rise in temperature.&nbsp; Highest C:N ratio (19.30) was obtained in T<sub>3</sub>. The pH of the compost was significantly influenced by saw dust which ranged from 8.28 in T<sub>2</sub> to 8.74 in T<sub>1</sub>. Moisture content of compost was significantly influenced by bulky materials and ranged from 56.34 to 68.83. At 42 day the highest crude fiber was obtained in T<sub>2</sub> (25.16%). The results suggest that bulky materials treated bio-slurry can be good compost which will be very effective to soil and crops.</p> <p><strong><em>Bang. J. Anim. Sci. 2020. 49 (2): </em></strong><strong><em>142-150</em></strong></p> M Al-Amin MM Rahman SMA Islam H Dhakal MRI Khan MR Amin AKMA Kabir ##submission.copyrightStatement## 2021-05-04 2021-05-04 49 2 142 150 10.3329/bjas.v49i2.53224 Use of Spirulina platensis in place of vitamin mineral premix on the performance of broiler <p>The experiment was conducted to compare the effects of different sources of Spirulina and vitamin mineral premix as feed additive on the growth performance of broiler. Two hundred day old broiler chicks (COBB-500) were divided into five groups such as T<sub>1</sub>-(Feed containing 0.30% Vitamin mineral premix+0.0% Spirulina), T<sub>2</sub>-(Feed containing 0.15% Vitamin mineral premix+0.15% Spirulina from China), T<sub>3</sub>-(Feed containing 0.0% Vitamin mineral premix+0.30% Spirulina from China), T<sub>4</sub>-(Feed containing 0.15% Vitamin mineral premix+0.15% Spirulina from Myanmar) and T<sub>5</sub>-(Feed containing 0.0% Vitamin mineral premix+0.30% Spirulina from Myanmar) having four replication in each group containing 10 birds/replication. The experiment was conducted for 28 days (Completely Randomized Design) with <em>ad libitum</em> feed and water. Live weight was numerically higher (P&gt;0.05) in T<sub>4</sub> in 4<sup>th</sup> weeks of age. Lower feed intake observed in T<sub>3</sub> and T<sub>5</sub> which was mainly 50% replacement of vitamin mineral premix by Spirulina. After end of the feeding trial feed conversion ratio (1.66) in control group was higher (P&lt;0.05) than other groups (1.63, 1.64, 1.59 and 1.61 respectively in T<sub>2</sub>, T<sub>3</sub>, T<sub>4</sub> and T<sub>5</sub>). Dressing percentage (63.12%), breast weight (21.22%) and thigh weight (8.54%) were higher (P&lt;0.05) in T<sub>4</sub> than all other groups. Concentration of total cholesterol in blood plasma (64.42mg/dl) and serum albumin (1.75g/dl) was lower (P&lt;0.05) in T<sub>4</sub>. It could be concluded that Spirulina from Myanmar is better than China and 50% synthetic vitamin mineral premix could be replaced by using Spirulina from Myanmar for better growth of broiler.</p> <p><strong><em>Bang. J. Anim. Sci. 2020. 49 (2): </em></strong><strong><em>151-158</em></strong></p> KMS Islam P Roy MR Debi M Kamruzzaman ##submission.copyrightStatement## 2021-05-04 2021-05-04 49 2 151 158 10.3329/bjas.v49i2.53225 Performance and mineral metabolism of broiler replacing commercial diet by rice polish and supplementation of citric acid <p>During an experimental period of 28 days citric acid (CA) was tested as a growth promoter instead of antibiotics with replacement of commercial diet by rice polish (RP). Newly 240 hatched broiler chicks (Cobb 500) distributed into eight dietary groups (3 replicate cages having 10 birds in each), 1=Control (commercial diet), 2=Commercial diet+0.5% CA, 3=5.0% RP, 4=5.0% RP+ 0.5% CA, 5=10.0% RP, 6=10.0% RP+0.5% CA, 7=15.0% RP, 8=15.0% RP+0.5% CA. Diets were supplemented by acid insoluble ash (1.0% Celite) as marker. At the end, blood sample was collected from all birds. Total ash, mineral content and density of tibia were determined. Final body weight (g/b) of chicks were 1655, 1733, 1642, 1694, 1618, 1656, 1613 and 1631 g, respectively (P&gt;0.05). Feed intake (g/bird) was 2359, 2419, 2432, 2433, 2524, 2494, 2519 and 2424 g, respectively (P&gt;0.05). FCR varied (P&lt;0.05) among the groups were 1.48, 1.44, 1.54, 1.49, 1.62, 1.55, 1.62 and 1.54, where better FCR was in CA groups comparison to non-CA groups. Retention of Ca, P and Mg increased in CA group’s comparison to non-CA groups but replacement of 5.0% commercial diet (with or without CA) caused higher retention level. Higher dressing percentage observed in CA group (65.4, 65.9 for group 2, 4) comparison to non-CA groups (63.8, 63.9 for groups 1, 3). Bone mineral concentration (total ash, Ca, P and Mg) slightly increased in CA groups (P&gt;0.05). In general, replacement of a commercial diet by RP up to 15.00% would be possible maintaining growth performance of broiler where further supplementation of 0.5% CA showed more advantages by increasing mineral density of bone.</p> <p><strong><em>Bang. J. Anim. Sci. 2020. 49 (2): </em></strong><strong><em>159-165</em></strong></p> KMS Islam MR Debi A Liesegang ##submission.copyrightStatement## 2021-05-04 2021-05-04 49 2 159 165 10.3329/bjas.v49i2.53227 Growth performance of Boer goat in relation to sex and type of birth at the Goat Research Station in Nepal <p>This study was carried out at Goat Research Station, Bandipur, Tanahun, Nepal to evaluate the different factors affecting the growth performance of pure Boer goat since its arrival on 2015. A total of 225 kids of Boer goat born from 218 kidding does recorded between 2015 and 2019 were used for analysis of birth weight, weaning weight, eight month weight and yearling weight in response to sex and type of birth. The overall least square means for birth weight is 3.246 ± 0.056 kg, weaning weight is 17.86 ± 0.105 kg, eight month weight is 28.66 ± 0.2.6 kg and yearling weight is 45.10 ± 0.218 kg. The least square means across sex for birth weight, weaning weight, eight month weight and yearling weight were 3.368 ± 0.090 kg, 18.42 ± 0.226 kg, 31.69 ± 0.415 kg and 49.29 ± 0.707 kg for male and 3.136 ± 0.068 kg, 17.43 ±0.150 kg, 26.35 ± 0.378 kg and 42.18 ± 0.778 kg for female respectively. Sex and type of birth have significant effect on birth weight and weaning weight, while for eight month weight and yearling weight, sex have significant effect but no significant effect on type of birth. In conclusion, the overall growth performance of Boer goat in Goat Research Station was to the expectation and may increase on improvement of management and environmental effects.</p> <p><strong><em>Bang. J. Anim. Sci. 2020. 49 (2): </em></strong><strong><em>166-169</em></strong></p> R Kadel S Malla SH Ghimire BB KC PB Shrestha ##submission.copyrightStatement## 2021-05-04 2021-05-04 49 2 166 169 10.3329/bjas.v49i2.53228