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Development of productive and reproductive potential of pregnant Red Chittagong cows through improved feeding in small scale dairy farm 在小型奶牛场通过改良饲养发展吉大港红奶牛妊娠生产和繁殖潜力
Pub Date : 2019-12-29 DOI: 10.3329/bjas.v48i1.44558
M. Asaduzzaman, M. Amin, N. Sarkar, K. Huque
The aim of the experiment was to investigate the productive and reproductive potential of pregnant Red Chittagong (RC) cows through improved feeding. A total of 30 pregnant RC cows from each of 30 farmers having six months pregnancy and between 2 and 3 parities old were used in the trial. The cows were randomly allocated to three dietary treatment groups, i.e., T0, T1 and T2. The cows of T0 group received farmers’ diet (63% of dry matter intake of cows according to ARC, 1995) without the supplementation and served as control. The cows of T1 group received farmer’s diet (63%) plus 25% supplementation of formulated concentrate diet for deficit of requirement of cows {(63 + 9.25) = 72.25% dry matter intake of cows according to ARC, 1995)} and T2 group received farmers diet (63%) plus formulated concentrate diet to meet 100% requirements of cows according to ARC (1995) {(63% +37%) = 100%}. The total live weight gain before calving of RC cows were observed significantly (P <0.05) higher in T2 and T1 groups than T0 group. The calves birth weight was found significantly (P <0.05) higher in T2group than T1 and T0 groups. The gestation length was increased approximately 3 and 2 days for T2 and T1 groups, respectively, compared to T0 group. Therefore, the farmer’s diet plus supplementation of formulated concentrate diet to meet 100% requirement of cows according to ARC (1995) {(63% +37%) = 100%} was a better improved feeding system of pregnant Red Chittagong cows.
本试验旨在通过改良饲粮研究妊娠红吉大港(RC)奶牛的生产和繁殖潜力。试验共使用30头怀孕6个月、胎龄在2 ~ 3胎龄之间的奶牛。将奶牛随机分为3个饲粮处理组,分别为T0、T1和T2。T0组饲喂不添加任何添加剂的农民日粮(根据ARC, 1995年奶牛干物质采食量的63%),作为对照。T1组饲喂农民饲粮(63%)加25%的配制精料,以满足奶牛需求不足{(63 + 9.25)= 72.25% (ARC, 1995)}; T2组饲喂农民饲粮(63%)加配制精料,以满足奶牛需求100% (ARC(1995){(63% +37%) = 100%})。T2和T1组RC奶牛产犊前总活重显著高于T0组(P <0.05)。t2组犊牛初生重显著高于T1和T0组(P <0.05)。与T0组相比,T2组和T1组的妊娠期分别增加了约3天和2天。因此,按照ARC(1995){(63% +37%) = 100%}的要求,农民日粮加添加100%满足奶牛需求的配制精料日粮是吉大港红奶牛妊娠期较好的改良饲喂体系。
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引用次数: 1
Productive and reproductive performance of Saanen goat at AZZahra farm of Sandakan in Malaysia 马来西亚山打根AZZahra农场Saanen山羊的生产和繁殖性能
Pub Date : 2018-12-26 DOI: 10.3329/bjas.v47i1.39395
M. Khandoker, N. Afini, A. Azwan
An experiment was conducted at AZ-Zahra Farm, Sandakan, Sabah, Malaysia to investigate the productive and reproductive performance of Saanen dairy goat. Body weight at different ages were collected once while birth weight was collected when does gave birth. On the other hand, milk production of each individual per day was received continuously for three months. The data on reproductive parameters such as length of estrus cycle, duration of estrus period, age at puberty, gestation length, age at first kidding, litter size, birth weight and kid mortality were noted. Descriptive statistics such as number, percentage, mean, standard deviation were performed. T-test was also conducted to know the statistical difference between the groups. Result demonstrated that body weight increases significantly (p<0.01) with the advancement of the age. The highest daily milk yield was found in 2-3 years of age. Dam with multiple kids produced more milk than dam with single kid. Estrus cycle of Saanen goats was found 21 days, the average estrus period duration was 2.75 days, age at puberty was 8.33 months, first kidding age was 14.2 months and gestation period was 150 days on an average. With the increase of the age of dam litter size increased. Meanwhile average birth weight increased as age of dam increased from 2.85 kg in 1 year to 3.26 kg in 3 years. Male kids born heavier than females (3.23±0.62 vs. 2.75±0.58 kg) and single kids were heavier than twin kids (3.07±0.66 kgvs2.70±0.28 kg). Low mortality rate of kids was recorded in this study (6.4%). It can be concluded that the overall productive and reproductive performances of Saanen goat at AZ-Zahra farm were within the acceptable level and the variation recorded in different parameters is very much usual. Bang. J. Anim. Sci. 2018. 47 (1): 1-12
在马来西亚沙巴州山打根的AZ-Zahra农场进行了一项试验,以调查Saanen奶山羊的生产和繁殖性能。在不同年龄收集一次体重,在分娩时收集出生体重。另一方面,每个个体每天的产奶量连续三个月。记录了发情周期长短、发情期持续时间、青春期年龄、妊娠期长短、初开玩笑年龄、产仔数、出生体重和儿童死亡率等生殖参数的数据。进行描述性统计,如数量、百分比、平均值、标准差。并进行t检验,了解组间的统计学差异。结果显示,随着年龄的增长,体重显著增加(p<0.01)。日产奶量在2 ~ 3岁时最高。有多个孩子的大坝比只有一个孩子的大坝产出更多的牛奶。沙嫩山羊发情周期21天,平均发情期2.75天,发情年龄8.33个月,初开胎龄14.2个月,平均妊娠期150天。随着坝龄的增加,凋落物大小也随之增加。平均出生体重随着坝龄的增加而增加,从1年的2.85 kg增加到3年的3.26 kg。男婴比女婴重(3.23±0.62 vs 2.75±0.58 kg),单胞胎比双胞胎重(3.07±0.66 kgvs2.70±0.28 kg)。儿童死亡率较低(6.4%)。综上所述,AZ-Zahra农场萨南山羊的生产和繁殖性能总体处于可接受的水平,各参数记录的变化非常普遍。爆炸。j .似的。科学》2018。47 (1): 1-12
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引用次数: 11
Goat production system at Mymensingh district in Bangladesh 孟加拉国迈门辛格地区的山羊生产系统
Pub Date : 2018-12-26 DOI: 10.3329/BJAS.V47I1.39396
A. Kumar, B. Chae, A. Bhuiyan, S. Sarker, M. Hossain
The experiment was conducted to investigate the present status and potentialities of organic goat production in Mymensingh district of Bangladesh through field survey. The data were collected through an interview schedule personally from 45 respondents in 3 villages of Bhaluka upazila who were involved in goat production. Parameters studied were check list for organic goat production likes origin, feeds and fodder, breeding, health care, living conditions and record keeping of livestock and factors related to organic goat production. In this study, about 100% goats were indigenous in origin. Among the farmers, 96% farmers used roadside grass and tree leaves whereas, only 4% farmers used cultivated fodder which was cultivated in their own land. 85% farmers used mixed feed which prepared by themselves. However, only 11% farmers used vitamin mineral supplementation.100% farmers used natural breeding method for goat breeding. About 91, 80 and 100% farmers practiced vaccination, deworming and castration method, respectively. About 84% farmers did not use hormone, antibiotic and growth promoter and 67% farmers removed sick or injured animals from healthy stock. About 100% farmers allowed access to outdoor and fallow land throughout the year. Only 31% farmers reared male and female goat separately and 60% farmers kept livestock record. In Bangladesh goat are reared in the conventional method where different inorganic substances are used by the farmers There are great potentialities for organic goat production in Bangladesh both for satisfying animal protein requirements and production of quality goat meat. For this, it is a prime importance to find out the present status and explore the potentialities of organic goat production in Bangladesh. Bang. J. Anim. Sci. 2018. 47 (1): 13-20
本试验旨在通过实地调查,探讨孟加拉国迈门辛格地区有机山羊生产的现状和潜力。数据是通过亲自访谈计划收集的,对象是来自Bhaluka upazila 3个村庄从事山羊生产的45名受访者。研究了有机山羊生产的原产地、饲料和饲料、育种、卫生保健、牲畜生活条件和记录保存等检查表以及有机山羊生产的相关因素。在这项研究中,大约100%的山羊是土生土长的。在农户中,96%的农户使用路边草和树叶,只有4%的农户使用自己土地上种植的人工饲料。85%的农民使用自行配制的混合饲料。然而,只有11%的农民使用维生素矿物质补充剂。100%农户采用自然育种方法进行山羊养殖。91%、80%和100%的农民分别采用疫苗接种、驱虫和阉割方法。约84%的养殖户不使用激素、抗生素和生长促进剂,67%的养殖户将患病或受伤的牲畜从健康的牲畜中剔除。大约100%的农民全年都允许使用户外和休耕地。只有31%的农户分别饲养公山羊和母山羊,60%的农户保留牲畜记录。在孟加拉国,山羊是用传统方法饲养的,农民使用不同的无机物。在孟加拉国,有机山羊生产在满足动物蛋白质需求和生产优质山羊肉方面具有巨大的潜力。为此,找出现状并探索孟加拉国有机山羊生产的潜力是至关重要的。爆炸。j .似的。科学》2018。47 (1): 13-20
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引用次数: 5
In vivo study of follicular statistics in Red Chittagong Cattle of Bangladesh 孟加拉吉大港红牛卵泡统计的体内研究
Pub Date : 2018-12-26 DOI: 10.3329/bjas.v47i1.39402
G. Deb, M. Kabir, M. Miraz, Smj Hossain, M. Afroz, T. N. Nahar, Mk Mostofa
The objective of this research was to generate baseline information on follicular statistics of Red Chittagong Cattle (RCC).Ten heifers and ten regular breeder RCC cows were selected randomly from BLRI Research Herd. The ovary was grasped by inserting left hand through the rectum and the follicles were visualized by inserting a sectorial probe through the vagina. Ovarian follicles were visualized and recorded by counting on the screen of ultrasonography machine. All visible follicles (>2.0mm) were counted and graded as small (<3.0mm), medium (3.0 to 8.0mm) and large (>8.0mm). The follicles were measured 3 times at a 3-day interval period without considering the stage of the reproductive cycle of the experimental animals. During this experiment, a total of 137 follicles (66 in Heifers and 71in cows) were observed from 10 heifers and 10 cows. The corpus luteum was observed either in the left or right ovary of 25.0% heifers and 35.0% cows. In heifer, 40.91, 45.45 and 13.64% of the observed follicles were belonged to small, medium and large groups, respectively. The percentage of small, medium and large follicles in the cow ovaries were 54.93, 39.44 and 5.63% accordingly. The number of follicles in an ovary did not vary (P>0.05) between right and left ovary of a heifer or cow. The diameter of the largest follicle on the ovary was smaller (P<0.05) in heifer (9.43±0.34mm) compared to cow (11.2 ± 0.73mm). This information will be helpful during aspiration of ovarian follicle from donor cows. Bang. J. Anim. Sci. 2018. 47 (1): 47-50
本研究的目的是获得吉大港红牛卵泡统计的基线信息。从BLRI研究群中随机选择10头小母牛和10头普通种RCC母牛。通过直肠插入左手握住卵巢,通过阴道插入扇形探头观察卵泡。在超声显像仪屏幕上计数记录卵巢卵泡。计数所有可见滤泡(>2.0mm),并按小(8.0mm)分级。在不考虑实验动物生殖周期阶段的情况下,每隔3天测量3次卵泡。本试验共从10头母牛和10头母牛中观察到137个卵泡(小母牛66个,母牛71个)。25.0%的小母牛和35.0%的母牛的左卵巢和右卵巢均可见黄体。在母牛中,40.91%、45.45%和13.64%的卵泡属于小群、中群和大群。母牛卵巢小、中、大卵泡比例分别为54.93%、39.44%和5.63%。小母牛和母牛的左右卵巢卵泡数无显著差异(P>0.05)。母牛卵巢最大卵泡直径(11.2±0.73mm)小于母牛(9.43±0.34mm) (P<0.05)。这些信息将有助于从供体奶牛中抽取卵泡。爆炸。j .似的。科学》2018。47 (1): 47-50
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引用次数: 2
Nutrient content of meat and bone meal available in the market of Chittagong district of Bangladesh 孟加拉国吉大港地区市场上可买到的肉骨粉的营养成分
Pub Date : 2018-12-26 DOI: 10.3329/BJAS.V47I1.39399
M. Hossain, Fi Zummy, M. Khatun, S. Islam
Meat and bone meal (MBM) is a potential source of animal protein for poultry. The study was undertaken to investigate the variations in the chemical composition of MBM available in different feed markets of Chittagong, Bangladesh. Secondary data from one hundred ten different MBM samples were analyzed in triplicate for dry matter (DM), crude protein (CP), crude fiber (CF), ether extract (EE) and total ash (TA) in the Poultry Research and Training Centre laboratory of Chittagong Veterinary and Animal Sciences University, Chittagong, Bangladesh during 21st October 2014 to 2nd December 2016. Data were collected, compiled and analyzed. Results indicated that, there were wide ranges of variations in the chemical compositions for different parameters. DM varied from 91.9 to 98.7% and CP varied from 18.5 to 74.5%. Similarly, CF varied from 1.1 to 2.9% and EE varied from 7.5 to 45.0%. TA varied from 4.8 to 33.6%. There was a strong negative relationship between CP and TA (r=-0.831; R2=0.691; P<0.001). However, DM and TA were positively correlated (r=0.374; R2=0.139; P=0.003). It was concluded that, chemical composition of MBM is widely variable. Wet chemistry analysis is suggested before inclusion of MBM in the diets of dairy, poultry and pet animals. Bang. J. Anim. Sci. 2018. 47 (1): 28-34
肉骨粉(MBM)是家禽动物蛋白的潜在来源。进行这项研究的目的是调查孟加拉国吉大港不同饲料市场上可获得的MBM化学成分的变化。2014年10月21日至2016年12月2日,在孟加拉国吉大港兽医和动物科学大学家禽研究和培训中心实验室,对110种不同MBM样品的干物质(DM)、粗蛋白质(CP)、粗纤维(CF)、粗脂肪(EE)和总灰分(TA)的二次数据进行了三份分析。收集、整理和分析数据。结果表明,在不同的参数下,其化学成分有较大的变化。DM值为91.9 ~ 98.7%,CP值为18.5 ~ 74.5%。同样,CF变化范围为1.1 ~ 2.9%,EE变化范围为7.5 ~ 45.0%。TA从4.8到33.6%不等。CP与TA呈显著负相关(r=-0.831;R2 = 0.691;P < 0.001)。DM与TA呈正相关(r=0.374;R2 = 0.139;P = 0.003)。结果表明,MBM的化学成分变化很大。建议在乳品、家禽和宠物饲料中加入MBM之前进行湿化学分析。爆炸。j .似的。科学》2018。47 (1): 28-34
{"title":"Nutrient content of meat and bone meal available in the market of Chittagong district of Bangladesh","authors":"M. Hossain, Fi Zummy, M. Khatun, S. Islam","doi":"10.3329/BJAS.V47I1.39399","DOIUrl":"https://doi.org/10.3329/BJAS.V47I1.39399","url":null,"abstract":"Meat and bone meal (MBM) is a potential source of animal protein for poultry. The study was undertaken to investigate the variations in the chemical composition of MBM available in different feed markets of Chittagong, Bangladesh. Secondary data from one hundred ten different MBM samples were analyzed in triplicate for dry matter (DM), crude protein (CP), crude fiber (CF), ether extract (EE) and total ash (TA) in the Poultry Research and Training Centre laboratory of Chittagong Veterinary and Animal Sciences University, Chittagong, Bangladesh during 21st October 2014 to 2nd December 2016. Data were collected, compiled and analyzed. Results indicated that, there were wide ranges of variations in the chemical compositions for different parameters. DM varied from 91.9 to 98.7% and CP varied from 18.5 to 74.5%. Similarly, CF varied from 1.1 to 2.9% and EE varied from 7.5 to 45.0%. TA varied from 4.8 to 33.6%. There was a strong negative relationship between CP and TA (r=-0.831; R2=0.691; P<0.001). However, DM and TA were positively correlated (r=0.374; R2=0.139; P=0.003). It was concluded that, chemical composition of MBM is widely variable. Wet chemistry analysis is suggested before inclusion of MBM in the diets of dairy, poultry and pet animals. \u0000Bang. J. Anim. Sci. 2018. 47 (1): 28-34","PeriodicalId":8873,"journal":{"name":"Bangladesh Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87396242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Effect of replacing maize and starch with Shoti meal (Curcuma zedoaria) in broiler 莪术粉替代玉米和淀粉对肉鸡的影响
Pub Date : 2018-12-26 DOI: 10.3329/bjas.v47i1.39400
S. Datta, S. Rahman, O. Islam, M. Hassan, M. Hossain, S. Islam, Rahman Mh
The effects of raw and autoclaved Shoti (Curcuma zedoaria) meal on the growth and N utilization of growing broilers were determined. Shoti from Bangladesh Agricultural University campus was collected and sorted on the basis of white color of the rhizome. Then they were chopped into pieces, sun dried and pulverized in a flour mill. Aliquot samples were autoclaved at 1200C under 15 lb of pressure per square inch for 30 min. Autoclaved samples were stored in tightly lid contained for future use. 3 One hundred -day-old Cobb 500 broiler chicks were reared on the floor and a total of 24 growing broilers, 4 birds in each group were weighed on d 15 Two broilers were placed in each cage. There were a total of four experimental and two control (positive and negative Non-protein control) diets. Diets were fed ad libitum from day 15 to 33days. Body weight, feed intake, feed refusal and fecal weights were recorded every day. Cumulative feed efficiency per bird was calculated as the ratio of weight gained to feed consumed. Dry matter of excreta was determined from the last 10 d of feeding trial by drying aliquots of every day’s droppings by drying for 6 h at 1050C. On d 19, birds were bled to death. Immediately after slaughter, the carcasses were examined systematically. The chemical composition of Shoti meal showed that it is low in protein, fat and trace minerals and therefore mainly a source of energy. The bulk of the tuber (75 percent) consists of carbohydrates, made up of 10.6% fiber, and 64.9% nitrogen free extracts (NFE). A peculiarity of Curcuma rhizome meal contains high level of ash (9.9%) on DM basis. The results showed that at day 33, the weight of the broiler chicken fed shoti 100g, 200g, 300 g and 200g (autoclaved shoti meal)/ Kg diet was significantly different from the weight of the chicken fed on a maize-soybean diet. The birds given shoti meal consumed less feed than those provided with a maize diet. Feed efficiency or weight gain to feed ration over 19-d period was the poorest when fed 300 g Shoti/ Kg diet. Intake picked up when the shoti meal was incorporated after having been autoclaved and there was slight improvement in body weight gain as compared to that of other Shoti fed group. However, feed efficiency and body weight gain as % of initial weight remained significantly lower than the maize-soybean control. The inclusion of Shoti meal generally had an adverse effect on the apparent dry matter digestibility compared with the control diets. The group fed autoclaved shoti meal had a similar effect and the true N digestibility was the lowest when compared to those of control fed on maize-soybean meal. Thus, physical treatment like using autoclave, caused further reduction of digestibility of its N. Lipid digestibility was reduced by ingestion of shoti meal. Since the diets were isocaloric, after correction for the apparent endogenous lipid losses, which were obtained from the results of non-protein control feeding, the net faecal losses wa
研究了生莪术粉和蒸熟莪术粉对生长肉鸡生长和氮素利用的影响。采集孟加拉农业大学校园产的松果,根据根茎的白色进行分类。然后把它们切成块,晒干,在面粉厂里磨成粉。样品在1200℃下,在每平方英寸15磅的压力下蒸压30分钟。蒸压后的样品保存在密闭的盖子中以备将来使用。3采用地板饲养100日龄Cobb 500肉鸡雏鸡,15 d时称重,每组4只,共24只生长肉鸡,每笼2只。试验共设4种试验饲粮和2种对照饲粮(阳性和阴性)。第15 ~ 33天采食。每天记录体重、采食量、拒食率和粪便质量。每只鸟的累积饲料效率按增重与饲料消耗之比计算。从饲喂试验的最后10 d开始,将每天的粪便等量在1050C下干燥6 h,测定排泄物的干物质。19日,鸟类被大量放血致死。屠宰后,立即对胴体进行系统检查。朔提饭的化学成分表明,它的蛋白质、脂肪和微量矿物质含量较低,因此主要是能量来源。块茎的大部分(75%)由碳水化合物组成,由10.6%的纤维和64.9%的无氮提取物(NFE)组成。姜黄根茎粉的一个特点是在DM基础上含有高水平的灰分(9.9%)。结果表明:试验第33天,饲粮分别饲喂100、200、300和200g蒸牛肉粉/ Kg的肉鸡体重与玉米-大豆混合饲粮的肉鸡体重差异显著。吃玉米粉的鸟比吃玉米的鸟消耗的饲料少。饲喂300 g朔提/ Kg日粮时,19 d饲粮的饲料效率或增重率最低。在蒸压后加入shoti餐后,摄入量增加,与其他shoti喂养组相比,体重增加略有改善。但饲料效率和增重占初始体重的百分比仍显著低于玉米-大豆对照。与对照日粮相比,添加茶提粉一般会对干物质表观消化率产生不利影响。蒸蒸豆粕组对氮的消化效果与蒸蒸豆粕组相似,但氮的真消化率低于玉米豆粕组。因此,使用高压灭菌器等物理处理导致其n的消化率进一步降低,脂质消化率因摄入shoti粉而降低。由于饲粮是等热量的,在校正了从非蛋白质对照饲粮中获得的内源性脂肪损失后,与对照组饲粮相比,净粪便损失约为摄入脂肪的66.2%。爆炸。j .似的。科学》2018。47 (1): 40-46
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引用次数: 0
Feeding effects of total mixed ration on rumen metabolic profile in Cattle 全混合日粮饲喂对牛瘤胃代谢谱的影响
Pub Date : 2018-12-26 DOI: 10.3329/bjas.v47i1.39401
R. Jahan, Amin, N. Sarker, M. Kamal
A feeding trial was undertaken to select the best combination of roughage and concentrate based on total mixed ration (TMR), to better rumen environment and determine the feeding effects of TMR on rumen metabolic profile in cattle. The experiment was conducted at Bangladesh Livestock Research Institute (BLRI) for a period of 35 days. A total of 5 types of TMR was prepared on fed basis with different roughage and concentrate ratios as T1=70:30, T2=60:40, T3=50:50, T4=40:60, and T5=30:70. Five cannulated bulls with an average live weight ranging from 200 to 300 kg and approximately 18 months of age were selected for the experiment. The present study indicated that there was no significant difference in pH among different treatment groups. Concentration of total volatile fatty acids (TVFAs) was highest in T2 group which was found to be increased up to 12 h after feeding, then gradually decreased up to 24 h. Concentration of total nitrogen (TN), ammonia nitrogen (NH3-N), non protein nitrogen (NPN) and protein nitrogen (PN) were highest in T5 group. Concentration of total nitrogen (TN), ammonia nitrogen (NH3-N) and protein nitrogen (PN) were gradually decreased up to 12 h after feeding but then gradually increased trend observed up to 24 h. Concentration of non protein nitrogen (NPN) was found to be decreased gradually from 0 h up to 24 h after feeding. The result also indicated that rumen NH3-N was positively correlated with TN intake of the animal. It can be concluded from the present study that the TMR provided better rumen environment at different hours of digestion could be used for better rumen fermentation. The best combination of roughage to concentrate ratio (30:70) was in T5 group for better N utilization to achieve maximum performance through proper feeding which might reflect the gross return of cattle production. Bang. J. Anim. Sci. 2018. 47 (1): 35-39
本试验以全混合日粮(TMR)为基础,选择粗精料的最佳组合,改善瘤胃环境,研究TMR对瘤胃代谢谱的影响。试验在孟加拉国畜牧研究所(BLRI)进行,为期35天。按粗精料比分别为T1=70:30、T2=60:40、T3=50:50、T4=40:60、T5=30:70,共配制5种TMR。选取平均活重200 ~ 300 kg、18月龄左右的空心公牛5头进行试验。本研究表明,不同处理组间pH值无显著差异。总挥发性脂肪酸(TVFAs)浓度以T2组最高,在饲喂后12 h呈升高趋势,在饲喂后24 h呈逐渐下降趋势,总氮(TN)、氨氮(NH3-N)、非蛋白氮(NPN)和蛋白氮(PN)浓度以T5组最高。总氮(TN)、氨氮(NH3-N)和蛋白质氮(PN)浓度在饲喂后12 h呈逐渐降低趋势,在饲喂后24 h呈逐渐升高趋势,非蛋白氮(NPN)浓度在饲喂后0 h至24 h呈逐渐降低趋势。结果还表明,瘤胃NH3-N与动物全氮摄入量呈正相关。综上所述,TMR在不同消化时间提供了较好的瘤胃环境,可用于更好的瘤胃发酵。T5组粗精比(30:70)为最佳组合,可提高氮素利用率,通过合理饲喂获得最大生产性能,反映牛生产的总收益。爆炸。j .似的。科学》2018。47 (1): 35-39
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引用次数: 3
Effect of wood shaving litter density on the growth, leg disorders and manurial value in broiler 削木凋落物密度对肉鸡生长、腿部障碍及肥料价值的影响
Pub Date : 2018-12-26 DOI: 10.3329/bjas.v47i1.39397
Ma Hossain, I. Zulkifili, S. Islam, E. Awad
The study was conducted with an aim to investigate the effect of litter density on growth, leg health and litter quality of broiler chickens from d1-42 days. Day-old male broiler chicks (n=400; Cobb 500) were distributed randomly into four litter densities [T1, T2, T3 and T4] treatments, each treatment had 5 replicates with 20 birds per replicate cage in a completely randomized design. Wood shaving was used as litter materials to a thickness of 5 cm, 8 cm, 11 cm and 14 cm on the floor of the pen. Birds were reared on the litter floor open-sided housing condition with ad libitum feed and water throughout the trail period. Data on feed intake (FI), body weight (BW), feed conversion ratio (FCR) and mortality were measured weekly. Litter sample was collected on day 42 to assess the nitrogen content (N2 %), dry matter (DM%) and moisture level (%). Footpad dermatitis (FPD) and hock burn (HB) incidences were measured on day 42 to assess the leg quality of birds. Results demonstrated that litter thickness had no significant (P>0.05) effect on FI, BW, FCR and mortality of broilers from d1-42 days. The N2, DM or moisture levels (%) of litter were also unaffected (P>0.05) between treatment. Leg disorders such as HB and FPD were influenced (P<0.01) by treatment. The incidences of HB and FPD were higher (P<0.01) in T1 and T2 than other treatments. It can be inferred from our current study that, leg health may be deteriorated by using low density wood shaving without affecting growth and litter quality of broiler chickens. Bang. J. Anim. Sci. 2018. 47 (1): 21-27  
本试验旨在研究产仔密度对21 ~ 42日龄肉鸡生长、腿部健康和产仔质量的影响。日龄肉鸡公雏(n=400;采用完全随机设计,将Cobb 500只鸡随机分为4个产仔密度[T1、T2、T3和T4]处理,每个处理5个重复,每个重复笼20只鸡。用木屑作为凋落物材料,在笔的地板上分别铺上5 cm、8 cm、11 cm和14 cm的厚度。在试验期间,将雏鸟饲养在落叶层开放式鸡舍条件下,随意饲喂和饮水。每周测定采食量(FI)、体重(BW)、饲料系数(FCR)和死亡率。第42天采集凋落物样品,测定氮含量(N2 %)、干物质(DM%)和水分水平(%)。在第42天测量脚垫皮炎(FPD)和跗关节烧伤(HB)发生率,以评估鸟类的腿部质量。结果表明,产仔厚度对1 ~ 42日龄肉仔鸡FI、BW、FCR和死亡率无显著影响(P>0.05)。凋落物的N2、DM和水分含量(%)在不同处理间也不受影响(P>0.05)。治疗对HB、FPD等腿部疾患有显著影响(P<0.01)。T1、T2期HB、FPD发生率均高于其他治疗组(P<0.01)。本研究结果表明,在不影响肉鸡生长和产仔质量的情况下,低密度木材剃须可能会损害肉鸡的腿部健康。爆炸。j .似的。科学》2018。47 (1): 21-27
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引用次数: 2
Growth performance of local and genetically improved chicken of Bangladesh 孟加拉国地方和基因改良鸡的生长性能
Pub Date : 2018-12-24 DOI: 10.3329/bjas.v47i2.40247
A. Akhter, SC Das, Hasan, T. Akter, M. Sultana, S. Faruque, M. Rashid, B. Dey, M. Hossain, S. Akter, Nn Retee
The experiment was conducted to compare the growth performance among four genotypes of indigenous chicken namely Non-descriptive Native (ND), genetically Improved Native (IN), Hilly (HC) and Naked Neck (NN) of Bangladesh under free-range rearing system.  A total of 288 day old chicks (DOC) from four genotypes were divided into four treatments having eight replications of each for a period of 12 weeks under free-range system with supplementation of commercial broiler diet. During first 4 weeks, all chicks were kept together, whereas chicks of ND was brooded in the same room but separated by a partition. At 5 weeks of age chicks were randomly distributed to the selected farmers. Growth parameters were recorded to determine the comparative growth performance among four genotypes of chicken. The highest body weight (1110.76 g/bird) was achieved by HC, followed by IN (900.63 g/bird) and NN (831.13 g/bird) at 12 weeks of age. The lowest body weight (734.13 g/bird) however was found in ND chicken. During the growing period under free range rearing (5-12 weeks), HC group consumed the highest amount of feed (2697.02 g/bird) with an average FCR of 3.06 while the lowest feed consumption (2666.13 g/bird) with the highest FCR of 4.90 was observed in ND. IN consumed (2674.63 g/bird) feed with an average FCR of 3.92 and BLRI improved NN consumed (2668.13 g/bird) feed with an average FCR of 4.19. Live weight gains in all the four genotypes of indigenous chicken were changed almost in a similar pattern. Significant differences were observed in live weight, dressing percentage, breast meat, drumstick, thigh meat among the four genotypes of chicken. The HC was superior to other genotypes of indigenous chicken including ND in terms of growth performance, meat yield characteristics and net returns. Bang. J. Anim. Sci. 2018. 47 (2):76-84
本试验比较了散养方式下孟加拉国非描述性本地鸡(ND)、遗传改良本地鸡(IN)、丘陵鸡(HC)和裸颈鸡(NN) 4种基因型的生长性能。选用4种基因型288日龄雏鸡(DOC),在散养体系下,分为4个处理,每个处理8个重复,添加商品肉鸡饲粮,试验期12周。在前4周,所有雏鸡都放在一起饲养,而ND雏鸡在同一房间孵育,但隔了一个隔板。在5周龄时,将雏鸡随机分配给选定的农户。记录生长参数,比较4种基因型鸡的生长性能。12周龄时,HC组体重最高(1110.76 g/只),其次是IN组(900.63 g/只)和NN组(831.13 g/只)。雏鸡体重最低,为734.13 g/只。散养期(5 ~ 12周),HC组饲粮用量最高,为2697.02 g/只,平均饲料比为3.06;ND组饲粮用量最低,为2666.13 g/只,饲料比最高,为4.90。IN组饲粮(2674.63 g/只)平均饲料比为3.92,BLRI改良NN组饲粮(2668.13 g/只)平均饲料比为4.19。所有四种基因型土鸡的活重增加几乎以相似的模式发生变化。4种基因型鸡的活重、屠宰率、胸肉、鸡腿肉、大腿肉差异显著。在生长性能、产肉特性和净收益方面,HC均优于其他基因型土鸡,包括ND。爆炸。j .似的。科学》2018。47 (2): 76 - 84
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引用次数: 2
Effect of bottle gourd leaf (Lagenaria siceraria) extract on the quality of beef meatball: bottle gourd leaf extract on meatball. 冬瓜叶提取物对牛肉肉丸品质的影响:冬瓜叶提取物对肉丸品质的影响。
Pub Date : 2018-12-24 DOI: 10.3329/BJAS.V47I2.40270
N. Saba, M. A. Hashem, M. Azad, M. Hossain, M. Khan
The experiment was conducted to find out the effect of different levels of bottle gourd leaf extraction on beef meatballs. Ground beef samples were divided into four treatment groups having bottle gourd leaf extracts as control T1 (0%), T2 (1%), T3 (2%), T4 (3%). Proximate analysis, sensory tests (color, flavor, tenderness, juiciness, and overall acceptability), cooking loss, pH value, free fatty acids (FFA), thiobarbituric acid values (TBARS), peroxide value (POV) and microbiological examination were determined. Days of intervals of experiment were 0, 15, 30 and 45 days. Data were analyzed using SAS Statistical software. DM content of all the treatment groups differ significantly (p<0.05). In contrast, DM content increased significantly (p<0.05) with the advancement of different days of intervals. The CP and EE content at different treatment levels differ significantly (p<0.05). The FFA, TBARs, POV values were decreased significantly (p<0.05). The color, flavor, tenderness, juiciness, overall acceptability, raw and cooked pH were increased at different treatment levels significantly (p<0.05). The cooking loss (%) with the advancement of days of intervals were differ significantly (p<0.05). TCC (log CFU/g) and TYMC (log CFU/g) were decreased significantly (p<0.05) at different treatment levels. Parameters studied showed that, 2% bottle gourd leaf extract added meat balls were the best quality, so it may be concluded that 2% bottle gourd leaf extract can be used in beef meatball as a source of antioxidant and antimicrobial agent to increase shelf-life of meatballs.
本试验旨在研究不同水平的葫芦叶提取物对牛肉肉丸的影响。将牛肉碎分为4个处理组,分别以冬瓜叶提取物为对照T1(0%)、T2(1%)、T3(2%)、T4(3%)。测定了近似分析、感官测试(颜色、风味、嫩度、多汁性和总体可接受性)、蒸煮损失、pH值、游离脂肪酸(FFA)、硫代巴比妥酸值(TBARS)、过氧化值(POV)和微生物学检查。试验间隔为0、15、30、45 d。数据分析采用SAS统计软件。各处理组DM含量差异有统计学意义(p<0.05)。DM含量随生育间隔的延长而显著升高(p<0.05)。不同处理水平粗蛋白质和粗脂肪含量差异显著(p<0.05)。FFA、TBARs、POV值显著降低(p<0.05)。不同处理水平显著提高了肉汤的色、味、嫩度、多汁性、总体接受度、生、熟pH (p<0.05)。蒸煮损失率(%)随发酵间隔天数的增加差异有统计学意义(p<0.05)。TCC (log CFU/g)和TYMC (log CFU/g)在不同处理水平下均显著降低(p<0.05)。研究结果表明,2%的冬瓜叶提取物添加量为肉丸的最佳质量,可见2%的冬瓜叶提取物可作为抗氧化剂和抗菌剂用于牛肉肉丸中,以延长肉丸的保质期。
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引用次数: 22
期刊
Bangladesh Journal of Animal Science
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