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Influence of Natural Antioxidants from Essential Oils on Shelf Life of Chicken Fillet 精油中天然抗氧化剂对鸡柳保质期的影响
Pub Date : 2023-01-01 DOI: 10.5455/ajvs.131448
Eman R. Hassan, Hossam A. Ibrahim, Michael M. Shawky, G. Hamad, M. Wahab
Recently, researchers have been more interested in natural than synthetic antioxidants because consumers and industry prefer foods with natural antioxidants to synthetic ones. During past two decades, many researchers tested essential oils like morenga and wheat germ because they contain chemical compounds that can increase or enhance shelf-life of foods, make them more resistant to oxidation, slow down the microbial or fungal growth, and show positive effect on their physiochemical properties. Therefore, the aim of this study was to evaluate the antioxidant and antimicrobial effect of two essential oils (morenga and wheat germ) to be used as natural preservative in Chicken fillet, So they were applied as natural preservative in Chicken fillet at three concentrations (0.2%, 0.5% and 1%) and compared with negative control and positive control (BHT) and the TBARS, DNPH, pH value, WHC and microbial load was evaluated through a storage period of 12 days and at 4 °C, during storage the treatment showed a results superior to that of the synthetic antioxidant with a lower TBARS value, carbonyl content and microbial load. These findings show that this essential oils at the level of 1% is very effective against lipid and protein oxidation, and a powerful antimicrobial in chicken fillet and is a promising natural antioxidant and antimicrobial replacing the synthetic preservatives in meat processing
最近,研究人员对天然抗氧化剂比合成抗氧化剂更感兴趣,因为消费者和工业更喜欢含有天然抗氧化剂的食品而不是合成抗氧化剂。在过去的二十年里,许多研究人员对摩伦花和小麦胚芽等精油进行了测试,因为它们含有的化合物可以延长或延长食物的保质期,使它们更抗氧化,减缓微生物或真菌的生长,并对其理化特性产生积极影响。因此,本研究的目的是评估两种精油的抗氧化和抗菌效果(morenga和小麦胚芽)作为天然防腐剂鸡角,所以他们应用作为天然防腐剂在鸡角三个浓度(0.2%、0.5%和1%),而消极的和积极的控制(二叔丁基对甲酚)和TBARS DNPH, pH值,广阔和微生物负载均通过一个存储段12天在4°C,贮藏期间,处理效果优于合成抗氧化剂处理,其TBARS值、羰基含量和微生物负荷均较低。研究结果表明,1%浓度的黄芪精油对鸡柳中脂质和蛋白质的氧化具有良好的抗氧化作用,是一种很有前途的天然抗氧化剂和抗菌药物,可以替代肉类加工中的合成防腐剂
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引用次数: 0
Serodiagnosis and Detection of Persistently Infected Cattle with BVDV in New Valley Province, Egypt 埃及新谷省牛BVDV持续感染的血清诊断和检测
Pub Date : 2023-01-01 DOI: 10.5455/ajvs.144953
A. Maher, O. Hakim, M. Saad, Yasser F. Elnaker
Bovine viral diarrhea (BVD) is an economically significant diseases in the bovine industry causing severe economic losses and there is no specific treatment so the primary aim of control to detect and remove persistently infected cattle (PI carriers) which serve as a virus source by shedding the virus life along and responsible for the presence of the virus within herds. So early diagnosis of PI animal is the critical point. To our knowledge, there have been no reports about the disease’s situation in New valley province, Egypt. The goal of this study was to serodiagnosis of BVD infection by Serum Neutralization Test (SNT) and early diagnosis of PI animals using BVDV Ag (POC)Test and Double antibody Sandwich ELISA (DS. ELISA) .In this study a total of 320 cattle of different ages, sexes, and breeds (not previously vaccinated with BVD vaccines) were screened clinically for symptoms of BVD infection, 92 cattle out of the totally screened 320 cattle showed clinical signs arousing suspicion of BVD( respiratory manifestation, diarrhea, growth retardation, oral lesion, and abortion) and undergo SNT and the result shows the percent of infection was 31.5% (29/ 92) .20 animal out of 92 clinically diseased undergo BVDV Ag Point-of-Care Test for detection of PI animal, 11 out of 20 examined cattle (55 %) were positive. PI animal was found to be high in cattle aged>2 months – 6 months than in other age groups. Also, male cattle had a greater infection rate than female ones, and infection was high in Frisian than in native bread. For more accurate confirmation five positive PI animal undergo (DS. ELISA). All Five positive PI animal were positive in ELISA (100% compatibility).
牛病毒性腹泻(BVD)是牛工业中经济上重要的疾病,造成严重的经济损失,没有特定的治疗方法,因此控制的主要目的是发现和清除持续感染的牛(PI携带者),它们通过释放病毒生命并导致病毒在牛群中存在而成为病毒源。因此早期诊断是PI动物的关键。据我们所知,没有关于埃及新谷省该病情况的报告。本研究的目的是通过血清中和试验(SNT)诊断BVD感染,并采用BVDV Ag (POC)试验和双抗体夹心ELISA (DS)对PI动物进行早期诊断。本研究对320头不同年龄、性别、品种(未接种BVD疫苗)的牛进行了BVD感染的临床筛查,其中92头牛出现了可疑的BVD临床症状(呼吸症状、腹泻、生长迟缓、口腔病变、腹泻)。结果表明,92头临床患病的20头牛中,有11头(55%)的牛进行了BVDV Ag定点检测(Point-of-Care Test)。结果表明,0 ~ 2 ~ 6月龄牛的PI水平高于其他年龄组。此外,公牛的感染率高于母牛,弗里斯兰面包的感染率高于本地面包。为了更准确的确认,5只PI阳性的动物接受DS。ELISA)。5只PI阳性动物ELISA均为阳性(100%相容性)。
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引用次数: 0
Improving Capacities of Chilled- and Cryo-Preserved Buck Spermatozoa by Enriching Preservation Medium with Moringa oleifera leaves extract 用辣木叶提取物强化保存培养基提高冷藏和冷冻保存雄鹿精子的能力
Pub Date : 2023-01-01 DOI: 10.5455/ajvs.146334
M. Khalifa
In the present work, two experiments were conducted to investigate the efficiency of supplementing buck sperm medium with Moringa oleifera leaves extract on liquid-chilled storage and cryopreservation capacities of spermatozoa. Twenty ejaculates were collected by an artificial vagina from 5 Damascus bucks, 4 ejaculates each, during September-October. The pooled specimens of each collection session were diluted (1:10) with Tris-citric egg yolk extender, and were split into 6 equal aliquots. The first aliquot served as control (moringa-free), whereas the other five aliquots were supplemented with 0.05, 0.1, 0.2, 0.3 or 0.4 mL/ml (v/v) moringa leaves extract, respectively. The samples were then stored and maintained at 4 oC for the subsequent 48 h during which sperm traits were assessed alongside malondialdehyde (MDA) production and glutathione peroxidase (GPX) activity. The optimum concentration of moringa leaves extract that showed potential for maintaining sperm traits throughout the chilled storage period was further investigated for preserving the lifespan of spermatozoa after exposure to the cryopreservation stress against control. The results showed that moringa leaves extract supplementation reduced (P<0.05) the oxidative stress on spermatozoa and recorded a positive correlation (P<0.01) with sperm motility (%), viability (%), normal sperm (%), acrosome integrity and GPX activity (r= 0.36, 0.42, 0.61, 0.79 and 0.35, respectively) while recording a negative correlation (P<0.01) with production of MDA (r= - 0.56). Furthermore, supplementing buck sperm medium with 0.4 mL/ml moringa leaves extract efficiently improved (P<0.05) all sperm characteristics and decreased (P<0.05) DNA fragmentation index (DFI) post thawing compared to those of control. These results imply the powerful potential of moringa leaves extract as an exogenous antioxidant supplement in buck sperm medium particularly when spermatozoa are used for AI and IVFM applications.
本试验研究了在雄精子培养基中添加辣木叶提取物对雄精子液冷保存和精子冻存能力的影响。在9 - 10月期间,用人工阴道收集了5只大马士革雄鹿的20次射精,每只4次射精。每个采集阶段的混合标本用三柠檬黄蛋黄扩展剂稀释(1:10),分成6等份。第1组为对照(不含辣木),其余5组分别添加0.05、0.1、0.2、0.3、0.4 mL/ mL (v/v)辣木叶提取物。然后将样品保存并在4℃下保存48小时,在此期间评估精子性状以及丙二醛(MDA)产生和谷胱甘肽过氧化物酶(GPX)活性。进一步研究了辣木叶提取物的最佳浓度,发现辣木叶提取物在整个冷藏期间保持精子性状的潜力,以保持精子在低温保存胁迫下的寿命。结果表明:添加辣木叶提取物降低了精子氧化应激(P<0.05),与精子活力(%)、活力(%)、正常精子(%)、顶体完整性和GPX活性呈正相关(P<0.01) (r分别为0.36、0.42、0.61、0.79和0.35),与丙二醛(MDA)生成呈负相关(P<0.01) (r= - 0.56)。与对照组相比,在雄精子培养基中添加0.4 mL/ mL辣木叶提取物能有效改善(P<0.05)雄精子的各项性状,降低(P<0.05)雄精子解冻后DNA断裂指数(DFI)。这些结果表明,辣木叶提取物作为雄精子培养基中外源抗氧化剂的补充具有强大的潜力,特别是当精子用于人工授精和体外受精应用时。
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引用次数: 0
Clinical And Surgical Assessments of Disorders of Conjunctiva and Cornea in Dogs: A Retrospective Study 犬结膜和角膜疾病的临床和外科评估:一项回顾性研究
Pub Date : 2023-01-01 DOI: 10.5455/ajvs.151681
Nihal Abdelkader, M. Kammar, H. Ahmed, Ahmed Korritum
‎A retrospective study of ‎corneo-conjunctival disorders was conducted on 71 dogs at ‎several private pet clinics in ‎Alexandria in Egypt between 2019 and 2022 to determine ‎the incidence of corneo-‎conjunctival disorders among different breeds, ages, and ‎sexes of dogs‎ using descriptive statistical tools. The overall incidence of corneo-‎‎conjunctival disorders in dogs was (35.50%) of the total ocular disorders encountered ‎with ‎Golden retriever breed being the most affected. The majority of corneo-‎conjunctival ‎affections were met with dogs less than 1 year of age with the cornea ‎being the most ‎affected anatomical location. Corneal Ulcer was the most frequently ‎diagnosed clinical ‎condition. It was also seen that males were affected more than ‎females.‎
采用描述性统计工具,对2019年至2022年埃及亚历山大市几家私人宠物诊所的71只狗进行了角膜结膜疾病的回顾性研究,以确定不同品种、年龄和性别狗的角膜结膜疾病发病率。犬角膜结膜疾病的总发病率占所有眼部疾病的35.50%,其中金毛品种的发病率最高。大多数角膜-结膜病变发生在1岁以下的狗身上,角膜是受影响最严重的解剖部位。角膜溃疡是最常被诊断的临床症状。研究还发现男性比女性更容易受到影响
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引用次数: 0
Incidence of Enteric Pathogens in Cooked Poultry Products in Relation to Public Health in Alexandria Province 亚历山德里亚省煮熟家禽产品中肠道病原体的发病率与公共卫生的关系
Pub Date : 2023-01-01 DOI: 10.5455/ajvs.107272
Amr Seify, I. Samaha, Mohammad A. Nossair, Sahar Lami
A total of 200 random samples of processed chicken meat products including frankfurter, luncheon, strips, and nuggets (50 of each) were collected from different supermarkets at Alexandria province. The samples were examined bacteriologically immediately after arrival to the laboratory for isolation and identification of some pathogenic bacteria that may contaminate these products as E. coli, Salmonellae, Campylobacter jejuni, and Staphylococcus aureus. The obtained results revealed that the incidence of E. coli in the examined samples of frankfurter, luncheon, strips, and nuggets was 10, 14, 6 and 0%, respectively. It was observed that the highest incidence was recorded in luncheon followed by frankfurter and lastly nuggets, the incidence of Salmonellae in the examined samples was 4, 6, 0 and 0%, respectively. The incidence of Y. enterocolitica in the examined samples of frankfurter, luncheon, strips, and nuggets was 4, 8, 2, and 2%, respectively. The incidence of C. jejuni in the examined samples of frankfurter, luncheon, strips, and nuggets was 6, 8, 0, and 2%, respectively. The incidence of S. aureus in the examined samples of frankfurter, luncheon, strips, and nuggets was 10, 8, 6, and 6%, respectively. Based on the recorded results in the current study, it was clear that the rates of isolation of the investigated enteric bacteria were higher in chicken frankfurter and luncheon as compared to strips and nuggets that may be attributed to the hygienic conditions of the working places and the awareness of the workers.
在亚历山德里亚省的不同超市中,随机抽取了法兰克福香肠、午餐肉、鸡肉条、鸡块等加工肉制品的200个样品(各50个)。样品到达实验室后立即进行细菌学检查,以分离和鉴定可能污染这些产品的一些致病菌,如大肠杆菌、沙门氏菌、空肠弯曲杆菌和金黄色葡萄球菌。结果显示,大肠杆菌在法兰克福香肠、午餐、肉条和鸡块的检出率分别为10%、14%、6%和0%。结果显示,沙门氏菌的检出率以午餐最高,其次为法兰克福香肠,最后为鸡块,检出率分别为4%、6%、0%和0%。在法兰克福香肠、午餐、肉条和鸡块的检测样本中,小肠结肠炎耶夫氏菌的发病率分别为4%、8%、2%和2%。在法兰克福香肠、午餐、肉条和鸡块的检测样品中,空肠梭菌的发病率分别为6%、8%、0%和2%。在法兰克福香肠、午餐、肉条和鸡块的检测样品中,金黄色葡萄球菌的发病率分别为10.8% 6%和6%。根据目前研究的记录结果,很明显,与条状和鸡块相比,所调查的肠细菌在法兰克福鸡肉和午餐中的分离率更高,这可能是由于工作场所的卫生条件和工人的意识。
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引用次数: 0
Effect of DL Methionine Supplementation in Japanese Quail Diets on Growth, Meat Quality and Health 日粮中添加DL蛋氨酸对日本鹌鹑生长、肉品质和健康的影响
Pub Date : 2023-01-01 DOI: 10.5455/ajvs.147511
R. Mahmoud, H. Ghanem, S. Salem
The present study aimed to assess the effect of dietary supplementation of DL- Methionine (DL-Meth) on growth performance and health of growing Japanese quails. A total of 300, 2- week-old quails were randomly divided into 4 equal experimental groups, with 8 replicates of 10 quails per pen, for 4 weeks. Quails in the control group were fed a control diet whereas in the other experimental groups the quails were fed a diet supplemented with DL-Meth (0.99%) at 1, 3, and 5g/kg diet. Quail’s performance traits in each experimental group were calculated weekly. At the end of the growth period, eight quails (one/replicate) from each group were chosen randomly for serum collection, carcass attributes measurement. The results revealed that quails’ growth traits; final weight (FW), weight gain (WG), and feed conversion ratio (FCR) showed a significant improvement (p < .05) (linear) as DL-Meth supplementation level increased to 3 and 5g/kg diet (7.2 and 9.1g/kg Meth respectively). Serum superoxide dismutase and catalase activities were improved (p < .05) in quails fed DL-Meth supplemented diet at 3, and 5g/kg. DL-Meth supplementation at 3, and 5g/kg was associated with a significant (p < .05) increase in quails’ breast muscle percentages compared to the other groups. In addition, the sensory evaluation of meat was not influenced by supplementation of methionine at different levels. It is concluded that under our experimental conditions, supplementation of 3g/kg DL- Meth (methionine content, 7.2g/kg) to corn-soybean meal-based diet for Japanese quails, was appropriate for enhancing the birds’ growth, breast muscle yield, and antioxidant activity with maintaining the acceptable sensory quality of birds’ meat.
本试验旨在评价日粮中添加DL-蛋氨酸(DL- meth)对育成期日本鹌鹑生长性能和健康状况的影响。选取2周龄鹌鹑300只,随机分为4个实验组,每栏8个重复,每栏10只,试验期4周。对照组饲喂对照饲粮,其余试验组分别饲喂在饲粮中添加1、3、5g/kg DL-Meth(0.99%)的试验饲粮。每周计算各组鹌鹑的生产性能。生长期结束时,每组随机选取8只鹌鹑(1个/重复)进行血清采集、胴体性状测定。结果表明:鹌鹑的生长性状;当DL-Meth添加水平分别为3和5g/kg日粮(分别为7.2和9.1g/kg Meth)时,末重(FW)、增重(WG)和饲料系数(FCR)呈显著线性提高(p < 0.05)。添加3、5g/kg DL-Meth的鹌鹑血清超氧化物歧化酶和过氧化氢酶活性显著提高(p < 0.05)。与其他组相比,添加3和5g/kg DL-Meth与鹌鹑胸肌百分比显著(p < 0.05)增加相关。此外,添加不同水平的蛋氨酸对肉品质的感官评价没有影响。综上所述,在本试验条件下,在以玉米-豆粕为基础的日粮中添加3g/kg DL-甲基苯甲胺(蛋氨酸含量为7.2g/kg)可促进日粮鹌鹑的生长、胸肌产量和抗氧化活性,同时保持肉的感官品质。
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引用次数: 0
D-Limonene and Vitamin E Combinatory Therapy Stimulate Erythropoiesis and Repair Of Β-Cells Atrophy in Alloxan–Induced Diabetic Rats d -柠檬烯和维生素E联合治疗刺激四氧嘧啶诱导的糖尿病大鼠红细胞生成和Β-Cells萎缩修复
Pub Date : 2023-01-01 DOI: 10.5455/ajvs.106781
Ramota Lawal, Tagang Aluwong, Musa Suleiman, Lateef Adeniran, Monday Onakpa, Peter Ajagbonna
Diabetes mellitus is a significant public health problem worldwide. Oxidative stress plays a pivotal role in the pathogenesis of diabetes as it is one of the inevitable outcomes of the cellular process. The present study aims to investigate the putative antihyperglycemic, antihyperlipidemic and antioxidant efficacy of limonene and vitamin E compared with metformin, a standard drug for the therapy of diabetes. Diabetes was induced by a single intraperitoneal injection of 150 mg/kg of alloxan. There was a significant (P<0.05) increase in body weight of rats treated with limonene, vitamin E, and combinatory therapy of limonene and vitamin E compared to the untreated diabetic group which showed a decrease in weight. Combinatory therapy treatment of limonene and vitamin E showed a significant difference (P<0.05) when compared with the groups treated with limonene, vitamin E, and metformin. The combinatory therapy also reduced blood glucose levels, significantly (P < 0.05) compared to the non-diabetic treated group treated with limonene and the group treated with vitamin E. Also, the combined treated group ameliorated the effect of diabetes on total cholesterol, triglyceride concentration, high-density lipoprotein, and low-density lipoprotein. Treatment with limonene and vitamin E, significantly (P< 0.05) ameliorated diabetic effect on MDA concentration and SOD activity. Pathological lesions observed in the pancreas treated with limonene, vitamin E, and combinatory therapy of limonene and vitamin E showed normal tissue architecture compared to the group treated with metformin. It was concluded that limonene and vitamin E exerted significant anti-diabetic and anti-hyperglycaemic effects in alloxan-induced diabetic rats.
糖尿病是世界性的重大公共卫生问题。氧化应激是细胞过程的必然结果之一,在糖尿病的发病机制中起着关键作用。本研究旨在探讨柠檬烯和维生素E与糖尿病治疗标准药物二甲双胍的降糖、降血脂和抗氧化作用。单次腹腔注射150 mg/kg四氧嘧啶诱导糖尿病。与未治疗的糖尿病组相比,柠檬烯、维生素E及柠檬烯和维生素E联合治疗的大鼠体重显著增加(P<0.05),体重下降。柠檬烯与维生素E联合治疗组与柠檬烯、维生素E、二甲双胍联合治疗组比较,差异有统计学意义(P<0.05)。联合治疗还显著降低了血糖水平(P <同时,联合治疗组改善了糖尿病患者对总胆固醇、甘油三酯浓度、高密度脂蛋白和低密度脂蛋白的影响。柠檬烯和维生素E处理,显著(P<0.05)改善糖尿病对MDA浓度和SOD活性的影响。与二甲双胍治疗组相比,柠檬烯、维生素E治疗组和柠檬烯、维生素E联合治疗组胰腺病理病变显示正常组织结构。由此可见,柠檬烯和维生素E对四氧嘧啶诱导的糖尿病大鼠具有明显的抗糖尿病和抗高血糖作用。
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引用次数: 0
Anesthetic and clinical assessments of I/V propofol versus ketamine in Dogs premedicated with diazepam 异丙酚与氯胺酮对预先给药安定犬的I/V麻醉和临床评价
Pub Date : 2023-01-01 DOI: 10.5455/ajvs.159481
Areej Shehata, Mostafa Kassem, Mahmoud Kammar, Howaida Ahmed
The present anesthetic investigation was aimed to evaluate anesthetic clinico-physiological and hematobiochemical effects in addition to the anesthetic properties of propofol or ketamine premedicated with diazepam . For this purpose, 12 apparently healthy dogs were randomly divided into Two groups: A and B. All dogs were premedicated with Diazepam (0.2mg/kg Bwt/IM) then intravenous anesthesia was induced in group A with propofol intravenous (1mg/kg Bwt) ,while group B with ketamine intravenous (5 mg/kg Bwt). Blood samples were collected from the Two groups 15 minutes before anesthesia induction, then at (15, 30, 45 and 60) minutes after treatments for the hemato-biochemical evaluation, and for clinico-physiological observations. A slight alteration in some physiological parameters and hemato-biochemical values was observed after anesthesia induction, but it still safe to induce general anesthesia in dogs. in conclusion, the present anesthetic investigation showed the longest period of anesthesia with complete muscle relaxation following intravenous ketamine injection than propofol in premedicated dogs with diazepam.
本研究旨在评估异丙酚或氯胺酮与地西泮预用药的麻醉临床生理和血液生化效应。将12只身体健康的犬随机分为A、B两组。所有犬均先给予地西泮(0.2mg/kg Bwt/IM),然后静脉麻醉,A组静脉麻醉丙泊酚(1mg/kg Bwt), B组静脉麻醉氯胺酮(5mg /kg Bwt)。两组患者分别于麻醉诱导前15分钟、麻醉诱导后15、30、45、60分钟采血,进行血液生化评价和临床生理观察。麻醉诱导后,犬的一些生理参数和血液生化指标略有改变,但全麻诱导仍然是安全的。综上所述,目前的麻醉研究表明,静脉注射氯胺酮后的麻醉时间比预先给药异丙酚的狗肌肉完全放松时间更长。
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引用次数: 0
Effects of Probiotics and Prebiotics and their Combinations on Growth Performance and Intestinal Microbiota of Broilers Infected with Mixed Salmonellae 益生菌和益生元及其组合对混合沙门氏菌感染肉鸡生长性能和肠道菌群的影响
Pub Date : 2023-01-01 DOI: 10.5455/ajvs.143849
R. Tarabees, S. A., A. S, D. A, EL A, Gaber M
In the present study, a total of 273 commercial Cobb chicks were subjectively divided into seven groups to evaluate the effects of a probiotic mixture, prebiotic (Isomaltooligosaccharide), and their combination additions on growth performance, intestinal microbiome, caecal colonisation of Salmonella of broilers challenged with S. enteritidis and S. typhimurium. The groups included G01: basal diet (negative control), G02; basal diet and challenged with Salmonella on 3rd day of life (positive control), G03: received probiotic mixture in drinking water and then challenged with Salmonella, G04: received prebiotic in feed and then orally challenged with Salmonella, G05: received probiotic mix and prebiotic (synbiotic) and then challenged with Salmonella, G06: received probiotic mix in drinking water, and G07: received prebiotic in the feed. The obtained data exhibited that probiotic mixture, prebiotic, and synbiotic supplements noteworthy, upgraded growth performance, reduced total Salmonella counts, and augmented the total numbers of Lactobacillus and Enterococcus in the caeca of challenged birds compared with those of challenge untreated group. Compared to the probiotic mix and prebiotic single supplements, the synbiotic effects were notable. Also, probiotic mixture and prebiotic supplements significantly enhanced growth performance and adjusted the caecum microbial composition of uninfected birds compared with those of the uninfected untreated group. In conclusion, probiotic mixture, prebiotic, and in particular, synbiotic supplements could enhance growth performance and increase Lactobacillus and Enterococcus population counts in caeca of broilers experimentally challenged with S. enteritidis and S. typhimurium.
本研究将273只商品科布鸡主观分为7组,研究益生菌混合物、益生元(低聚异麦芽糖)及其组合添加量对肠炎沙门氏菌和鼠伤寒沙门氏菌攻毒肉鸡生长性能、肠道菌群和盲肠沙门氏菌定殖的影响。G01组:基础饲粮组(阴性对照),G02组;G03:饮用混合益生菌后再攻毒沙门氏菌,G04:在饲料中添加益生元后再口服沙门氏菌,G05:益生菌混合益生元(合成)后再攻毒沙门氏菌,G06:饮用混合益生菌,G07:在饲料中添加益生元。获得的数据显示,与未攻毒组相比,益生菌混合物、益生元和合成菌补充剂显著提高了攻毒鸟的生长性能,减少了沙门氏菌总数,增加了盲肠中乳酸杆菌和肠球菌的总数。与益生菌混合制剂和单一益生元制剂相比,复合效果显著。此外,与未感染的未处理组相比,益生菌混合物和益生元补充剂显著提高了未感染鸟类的生长性能,并调整了盲肠微生物组成。综上所述,混合益生菌、益生元,特别是合成益生菌可提高肠炎沙门氏菌和鼠伤寒沙门氏菌攻毒肉鸡的生长性能,增加盲肠内乳酸杆菌和肠球菌的数量。
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引用次数: 0
Impact of Crossbreeding Between Local and Foreign Strains on the Growth Traits and the Expression of Insulin-Like Growth Factor Genes on Their Chicks 本地与外源杂交对雏鸡生长性状及胰岛素样生长因子基因表达的影响
Pub Date : 2023-01-01 DOI: 10.5455/ajvs.138355
Hanim S Heikal, Hanan Elsyd, Rania Tahan, H. Mahboub
Abstract: The aim of this work was to evaluate the impact of crossing pure Gimmizah or Bandara (local breeds) with pure Ross (a foreign breed) on growth rate, and the expression of IGF genes. Two local breeds, Gimmizah (G) and Bandara (B), plus one exotic strain of meat-type Ross 308 (R) parents, were used. Combinations of these genotypes were tested on a total of 120 birds from three pure parents. The 180 hatched chicks were divided into three purebreds G×G, B×B, and R×R and three crossbreds R×G, R×B, and G×R and reared for 7 weeks. Body weight and weight gain were recorded for each genetic group. The feed intake and feed conversion ratio were calculated. At the 7th week of age, tissue samples from breast muscle and pituitary gland were collected for IGF gene mRNA expression analysis. The results revealed that the R×R chicks displayed significantly higher final body weight, average daily weight gain, and average daily feed intake when compared to the G×G, B×B, and other crossbred chick lines. While both R×B and G×R crossbred chicks had significantly higher final body weights and average daily weight gains than R×G crossbred chicks and local chicks (G×G and B×B). A better feed conversion ratio was observed in G×R, B×B, R×R and R×B chicks. Crossbred lines (R×B and G×R) had higher dressing percentages than R×G and local breeds. The highest muscular expression of the IGF-II gene was recorded in R×G chicks, while the other crossbred lines, R×B and G×R expressed higher levels of the IGF-II gene than purebred lines. In relation to IGF-I*, R×B chicks had higher relative expression of this gene than other crossbred and purebred lines. When compared to other crossbred lines (R×B and G×R), the expression of IGF-I in brain tissues was significantly higher in the R×G crossbred line. IGF-II and IGF-I* expression levels in brain tissue were higher in the R×G chicks compared to the G×R, G×G, B×B, and R×R chicks. It was concluded that crossing pure Gimmizah or Bandara, as local breeds, with pure Ross 308, as a foreign breed, improved growth traits in the obtained crossbred chicks.
摘要/ Abstract摘要:本研究旨在评价本地品种gimizah或Bandara纯种与外源品种Ross纯种杂交对水稻生长速率和IGF基因表达的影响。两个本地品种,Gimmizah (G)和Bandara (B),加上一个肉型Ross 308 (R)亲本的外来菌株。这些基因型的组合在来自三个纯父母的总共120只鸟身上进行了测试。180只雏鸡被分成3只纯种G×G、B×B、R×R和3只杂交R×G、R×B、G×R,饲养7周。记录每个遗传组的体重和增重情况。计算采食量和饲料系数。7周龄时,采集胸肌和垂体组织样本进行IGF基因mRNA表达分析。结果表明,与G×G、B×B和其他杂交雏鸡品系相比,R×R雏鸡的最终体重、平均日增重和平均日采食量显著高于其他杂交雏鸡品系。而R×B和G×R杂交雏鸡的末重和平均日增重均显著高于R×G杂交雏鸡和地方雏鸡(G×G和B×B)。G×R、B×B、R×R和R×B组雏鸡的饲料系数较高。杂交品系(R×B和G×R)的屠宰率高于R×G和地方品种。IGF-II基因的肌肉表达量最高的是R×G鸡,而其他杂交品种R×B和G×R的IGF-II基因表达量高于纯种鸡。与IGF-I*相关,R×B雏鸡IGF-I*的相对表达量高于其他杂交和纯种雏鸡。与其他杂交系(R×B和G×R)相比,R×G杂交系脑组织中IGF-I的表达显著高于其他杂交系(R×B和G×R)。与G×R、G×G、B×B和R×R相比,R×G雏鸡脑组织中IGF-II和IGF-I*的表达水平更高。结果表明,将本地品种纯吉米沙或班达拉与外源品种纯罗斯308杂交,可提高杂交雏鸡的生长性状。
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alexandria journal of veterinary sciences
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