贵妃鸡肌肉及肝脏中八种矿物元素的测定与分析

为了探讨贵妃鸡体内矿物元素的含量,开发安全的绿色营养食品,改善人们的膳食和提供丰富的营养,以及为其人工饲养的饲料添加剂配方与微量元素疾病(缺乏症或中毒症)的诊断提供一定的科学依据.本试验采用火焰原子吸收光谱法测定分析了贵妃鸡胸肌、腿肌及肝脏中Ca、Cu、Fe、zn、Mn、K、Mg和Se八种矿物元素的含量.试验结果表明,贵妃鸡肝脏中Ca、Cu、Fe、Zn和Mn的含量极显著高于胸肌和腿肌(P<0.01),其他元素差异不显著(P>0.05).Cu、Zn在腿肌与胸肌中的含量差异显著(P<0.05),腿肌含量高于胸肌,其他元素均无明显差异(P>0.05).与地方良种庄河鸡比较,贵妃鸡组织中矿物元素Fe、Cu和Se的含量明显高,矿物元素Zn、Mg的含量较高,矿物元素Ca、Mn、K的含量与地方鸡种基本一致.由此可见,贵妃鸡中矿物元素Mg、Zn、Fe、Cu、Se的含量非常丰富.     

七彩山鸡肌肉及肝脏中12种矿物元素测定分析

为了探讨七彩山鸡体内矿物元素的含量 ,开发安全的绿色营养食品 ,以及为其人工饲养的饲料添加剂配方与微量元素疾病的诊断提供科学依据。本研究采用火焰原子吸收光谱法测定分析了七彩山鸡胸肌、腿肌以及肝脏中Ca、Cu、Fe、Zn、Mn、Mo、Se、Co、Cd、Cr、Pb、Ag 12种矿物元素的含量。结果表明 ,肝脏中Ca、Cu、Fe、Zn、Mn、Cd和Cr的含量极显著高于胸肌和腿肌 (P <0 .0 1) ,其他元素差异不显著 (P >0 .0 5 )。Cu、Zn在胸肌与腿肌中的含量差异显著 (P <0 .0 5 ) ,其他元素均无明显差异 (P >0 .0 5 )。     

鹅脂肪甘油三酯脂肪酶和长链脂酰辅酶A合成酶1基因表达差异及其对脂肪沉积和血清脂类代谢的调控

本试验旨在研究脂肪甘油三酯脂肪酶(ATGL)和长链脂酰辅酶A合成酶1(ACSL1)基因在鹅的不同组织器官中的表达差异,并探索2个基因表达对机体脂肪沉积和血清脂类代谢的调控。选取16周龄五龙鹅30只(公母各占1/2),屠宰后用实时荧光定量PCR检测不同组织器官(肝脏、心脏、皮下脂肪、腹部脂肪、胸肌、腿肌、肌胃、腺胃、小肠、肾脏、大脑、肺、脾脏)中A TG L、A CSL1基因表达量。结果表明:1)在鹅的皮下脂肪、腹部脂肪、肝脏、脾脏、肾脏、心脏、胸肌和腿肌中均检测出ATGL和ACSL1基因的表达;ATGL基因在皮下脂肪和腹部脂肪中表达量最高,其次是肝脏和脾脏,在肾脏、心脏、胸肌和腿肌中只有少量表达;ACSL1基因在皮下脂肪、腹部脂肪、肝脏、脾脏中表达量较高,在肾脏、心脏、胸肌和腿肌中有少量表达,而在肌胃、腺胃和肺中几乎不表达。2)ATGL基因表达量与腿肌肌内脂肪率、胸肌肌内脂肪率、腹部脂肪率、胸肌率和腿肌率呈显著或极显著负相关(P0.05或P0.01),与皮下脂肪率呈显著正相关(P0.05);ACSL1基因表达量与腿肌肌内脂肪率、胸肌肌内脂肪率、胸肌率呈正相关(P0.05),与腿肌率呈显著正相关(P0.05),与皮下脂肪率呈显著负相关(P0.05)。3)ATGL基因表达量与血清甘油三酯、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇和葡萄糖含量呈显著或极显著正相关(P0.05或P0.01);ACSL1基因表达量与血清总胆固醇、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇和葡萄糖含量呈负相关(P0.05),与甘油三酯含量呈显著负相关(P0.05)。由此可见,ATGL和ACSL1基因在鹅的不同组织器官中的表达具有明显差异性,对机体脂肪沉积和血清脂类代谢具有反向调控作用。     

MYH10基因在大恒699肉鸡、白羽肉鸡以及藏鸡不同组织器官中的表达差异研究

为了研究MYH10基因在不同鸡种不同组织器官间的表达差异,试验利用定量PCR方法检测了MYH10基因在白羽肉鸡、大恒699肉鸡、藏鸡不同组织器官(胸肌、腿肌、下丘脑、垂体)、不同生长阶段(2周龄、6周龄、10周龄)的表达量。结果表明:在2周龄,白羽肉鸡公鸡胸肌中MYH10基因的表达量显著高于大恒699肉鸡(P0. 05),白羽肉鸡母鸡胸肌中MYH10基因的表达量极显著低于其他鸡种(P0. 01),藏鸡公母鸡腿肌中MYH10基因的表达量极显著高于其他鸡种(P0. 01);在6周龄,白羽肉鸡公鸡胸肌中MYH10基因的表达量显著高于大恒699肉鸡(P0. 05),藏鸡母鸡胸肌和腿肌中MYH10基因的表达量分别显著高于大恒699肉鸡和白羽肉鸡;在10周龄,藏鸡公母鸡胸肌中MYH10基因表达量极显著高于其他鸡种(P 0. 01)。说明MYH10基因参与了鸡肌肉组织的生长和发育过程的调控。     

固始鸡组织器官中微量元素锰(Mn)沉积量的动态研究

用原子吸收分光光度计法测定了固始鸡0、2、4、6、8周龄时各组织器官(胸肌、腿肌、肝脏、肾脏、心脏、胰脏、胫骨、趾骨、跖骨、法氏囊)锰沉积量,并对其进行方差分析。结果表明：(1)胰脏和肝脏中锰的沉积量随着周龄的增加差异不显著(P＞0．05),肾脏和腿肌中锰的沉积量随周龄的增加差异显著(P＜0．05),其他各组织器官中锰的沉积量随周龄的变化差异极显著(P＜0．01);(2)胫骨、趾骨、跖骨、心脏、肾脏、肝脏、胸肌内锰沉积量随周龄的增加变化规律一致;不同组织器官中锰含量各不相同,肝脏中锰的沉积量最大,肾脏、骨骼(趾骨、跖骨、胫骨)次之,心脏和胸肌中含量最低。(3)法氏囊中锰的沉积量在0-2周龄有小幅度降低,从2周逐渐增加,并且差异极显著(P＜0．01)。     

微波消解-原子吸收法检测鸡组织中的重金属含量

采用微波消解原子吸收法测定鸡组织样品中的铅、镉、铜、铬等元素的含量 ,结果表明 :①组织中Pb的含量心脏 >肝脏 >肌胃 >胸肌 >肾脏 >腿肌 >骨骼 ,超标率分别为1 0 0 .0 % ,96.87% ,96.87% ,87.50 % ,1 0 0 .0 % ,81 .2 5% ,0 %。②组织中Cd的含量肾脏 >骨骼>腿肌 >肝脏 >心脏 >肌胃 >胸肌 ,超标率分别为 6.2 5% ,0 ,3 .1 3 % ,0 % ,0 % ,0 % ,0 %。③组织中Cu的含量心脏 >肝脏 >肾脏 >骨骼 >肌胃 >胸肌 >腿肌 ,超标率分别为 1 2 .50 % ,1 5.63 % ,9.3 8% ,3 .1 3 % ,0 % ,0 % ,0 %。④组织中Cr的含量肾脏 >肝脏 >心脏 >胸肌 >腿肌>骨骼 >肌胃 ,超标率分别为 50 .0 0 % ,62 .70 % ,9.3 8% ,3 .1 3 % ,0 % ,0 % ,0 %。     

不同性别武定鸡腿肌和胸肌脂肪酸含量比较分析

本文旨在研究不同性别成年武定鸡腿肌和胸肌中脂肪酸含量的差异,应用高效气相色谱仪检测腿肌和胸肌冻干粉中的18种脂肪酸。结果表明:1武定鸡腿肌和胸肌脂肪酸以油酸、棕榈酸含量最高,其次是亚油酸、硬脂酸、花生四烯酸。2武定鸡腿肌、胸肌脂肪酸以不饱和脂肪酸(USFA)为主,其含量显著高于饱和脂肪酸(SFA)(P0.05)。腿肌中USFA含量占18种脂肪酸含量的54%以上,胸肌中USFA含量占18种脂肪酸含量的60%以上。3相同性别不同部位脂肪酸含量差异显著(P0.05),腿肌的SFA、MUFA、USFA含量与胸肌差异显著(P0.05)。4性别对武定鸡腿肌脂肪酸含量影响显著(P0.05),而对胸肌脂肪酸含量影响不显著(P0.05)。综上,不同性别武定鸡腿肌和胸肌脂肪酸含量有明显差异,母鸡腿肌脂肪酸含量最高。     

赤水乌骨鸡黑色素沉积规律研究

为了解赤水乌骨鸡黑色素沉积规律,试验选择同批出壳健康赤水乌骨鸡雏鸡300只,相同条件下饲养,每隔2周利用比色法按照0~9级标准肉眼观察皮肤、心脏、肺脏、骨膜等16个器官组织部位的黑度,同时利用酶提取黑色素,通过分光光度计测定其胸肌、腿肌、皮肤中黑色素的含量,采用比色法进行比较。结果表明:爪、喙、骨膜黑色素沉积最多,腿肌和皮肤次之,沉积量随年龄增长逐渐减少,气管、肺脏、嗉囊、腺胃、肌胃、睾丸、卵巢黑色素沉积较少,沉积量逐渐增加。皮肤中黑色素含量显著高于胸肌、腿肌(P0.05),且皮肤、胸肌、腿肌中黑色素含量随年龄增长呈递减趋势。     

泸宁鸡肌肉硫胺素沉积规律研究

以四川省优质地方鸡种泸宁鸡为素材,分别从不同时期(81、119、154、210日龄)的200只鸡中随机选取8公8母,采用高效液相色谱法测定不同组织、日龄、性别肌肉中硫胺素的含量。结果显示,公母鸡腿肌硫胺素含量极显著高于胸肌(P0.01);公母鸡胸肌、腿肌硫胺素含量均在119日龄达到最高;随着日龄的增加,胸肌与腿肌硫胺素含量先上升后下降;胸肌硫胺素含量119日龄与81日龄、210日龄差异显著(P0.05),其余各日龄间差异不显著(P0.05);腿肌硫胺素含量各日龄间差异均显著(P0.05)。硫胺素含量与屠宰性状相关性分析结果显示,119日龄胸肌硫胺素含量与胸肌重呈极显著相关(P0.01),腿肌硫胺素含量与腹脂重呈极显著相关(P0.01)、与腿肌重呈显著相关(P0.05)。     

江口萝卜猪STAT3基因表达规律研究

为了更好地保护和开发利用江口萝卜猪,试验以0(出生时),2,4,10月龄江口萝卜猪为研究对象,利用实时荧光定量PCR(qPCR)测定江口萝卜猪不同生长阶段心脏、肝脏、脾脏、肺脏、肾脏、胃、十二指肠、背最长肌、腰大肌等9个器官组织中信号转导及转录激活因子3(STAT3)基因相对表达量,以此探究STAT3基因在不同年龄江口萝卜猪不同器官组织中的表达规律。结果表明:STAT3基因在脾脏、十二指肠和肺脏中表达量较高,为脾脏十二指肠肺脏,并且各月龄时STAT3基因在这3个组织中的表达量均显著高于其他组织(P0.05),其余组织间除腰大肌在0月龄和2月龄时表达量显著低于其他组织之外均差异不大(P0.05);同种组织不同月龄之间相比,肾脏、肝脏、胃、心脏中STAT3基因的表达量几乎不随月龄的增长而改变,在背最长肌、肺脏、十二指肠、脾脏以及腰大肌中,STAT3基因的表达量随着月龄的增长呈现上升趋势,其中在背最长肌、十二指肠和腰大肌中呈现大幅上升趋势,各月龄之间存在显著差异(P0.05)。STAT3基因在江口萝卜猪不同月龄、不同组织器官中呈现规律性表达,说明STAT3基因在江口萝卜猪的生长发育和能量代谢中发挥着重要作用。     

Ca2+ ATPase in Dutch warmblood foals compared with Na+, K+ ATPase: intermuscular differences and the effect of exercise

We studied the effects of exercise without or with a subsequent period on pasture on Ca2+ ATPase concentration in foal skeletal muscle, and compared the results with those previously reported on Na+, K+ ATPase. Ca2+ ATPase was measured in homogenates as Ca2+-dependent steady-state phosphorylation from [gamma-32P]ATP. From day 7 after birth, 24 foals were divided into three groups: (i) staying in a box stall (Box); (ii) staying in a box stall with an exercise programme of an increasing number of sprints per day (Exercise); and (iii) staying on pasture (Pasture). Half of the foals (12 with four in each treatment group) were killed after 5 months. The remaining foals stayed on pasture until 11 months. In the 5-month Pasture group, Ca2+ ATPase concentration was 29.4 +/- 4.3 nmol/g wet weight (wt) (n = 4) in gluteus medius muscle, 25.2 +/- 3.3 nmol/g wet wt (n = 4) in semitendinosus muscle (both mixed fibre type), and 4.1 +/- 1.7 nmol/g wet wt (n = 3) in the slow masseter muscle. These values were not altered by exercise or by box rest. This was in contrast to the Na+, K+ ATPase concentration which was not different between the three muscles, but showed a 20% rise in gluteus medius and semitendinosus muscle after exercise. In the period from 5 to 11 months on pasture, there was no change in Ca2+ ATPase in any group. In conclusion, the Ca2+ ATPase concentration in foal muscle is around 6-fold higher in mixed fibres than in slow fibres. Furthermore, the enzyme is not up- or down-regulated by sprint exercise or subsequent rest.     

Effects of dietary 1 alpha-hydroxycholecalciferol in calcium and phosphorous-deficient diets on growth performance,tibia related indices and immune responses in broiler chickens

This experiment was conducted to investigate the effect of dietary 1α-hydroxycholecalciferol (1α-OH-D₃) in calcium (Ca)- and phosphorous (P)-deficient diets on growth performance, carcass characteristics, tibia related parameters, and immune responses of broiler chickens. A total of 280 one-day-old broiler chickens (Ross 308) were assigned to 20 floor pens and 4 dietary treatments with 5 replicates. Dietary treatments consisted of starter diets (starter diet of treatment A: 1% Ca, 0.73% total phosphorus [tP]; starter diet of treatment B: 0.85% Ca, 0.64% tP + 5 μg/kg of 1α-OH-D₃; starter diet of treatment C: 0.85% Ca, 0.59% tP + 5 μg/kg of 1α-OH-D₃; starter diet of treatment D: 0.85% Ca, 0.54% tP + 5 μg/kg of 1α-OH-D₃), grower diets (grower diet of treatment A: 0.86% Ca, 0.68% tP; grower diet of treatment B: 0.73% Ca, 0.59% tP + 5 μg/kg of 1α-OH-D₃; grower diet of treatment C: 0.73% Ca, 0.55% tP + 5 μg/kg of 1α-OH-D₃; grower diet of treatment D: 0.73% Ca, 0.50% tP + 5 μg/kg of 1α-OH-D₃) and finisher diets (finisher diet of treatment A: 0.81% Ca, 0.64% tP; finisher diet of treatment B: 0.68% Ca, 0.56% tP + 5 μg/kg of 1α-OH-D₃; finisher diet of treatment C: 0.68% Ca, 0.52% tP + 5 μg/kg of 1α-OH-D₃; finisher diet of treatment D: 0.68% Ca, 0.48% tP + 5 μg/kg of 1α-OH-D₃). Results showed that body weight gain (BWG) and feed intake (FI) of broilers in treatment B were similar to those of broilers in treatment A at the end of the trial (P < 0.05). Broilers in treatments C and D had lower BWG and FI than those in treatment A during the whole trial (P < 0.05). Feed conversion ratio, carcass traits and relative weight of lymphoid organs were not affected by dietary treatments (P > 0.05). Dietary treatments had no significant effect on antibody titers against Newcastle and Influenza disease viruses as well as sheep red blood cells. Dietary treatments had no significant effects on tibia ash and tibial dyschondroplasia score. Broilers fed Ca-P deficient diets had lower tibia Ca and P than those in treatment A (P < 0.05). In conclusion, results indicated that broilers fed Ca-P deficient diets supplemented with 5 μg/kg 1α-OH-D₃ failed to achieve the same tibia Ca and P values as broilers fed nonphytate phosphorus adequate diets.     

氧氟沙星在乌骨鸡体内残留消除规律研究

采用高效液相色谱法分析氧氟沙星在乌骨鸡体内各组织中的残留消除规律。荧光检测器的激发波长为280nm,发射波长为450Dill。色谱柱为ttypersilODS—C18,柱温40~C,以磷酸（以三乙胺调pH至2．5）-乙腈（82：18）为流动相,流速1．0mL／min,进样量为20肛L。氧氟沙星在乌骨鸡肌肉、肝脏、。肾脏中的平均回收率分别为86．3％、83．2％、82．5％。检测限为10ng／g。当组织中氧氟沙星浓度在10～2000ug／kg范围时,线性关系良好。利用该方法对氧氟沙星在乌骨鸡体内的残留消除规律进行了研究,结果表明,氧氟沙星在鸟骨鸡体内的残留消除速度极为缓慢。40天休药期后,2日龄使用组可在肌肉、肝脏和肾脏中分别检出氧氟沙星146．8“g／kg、20．6“g／kg和437．4μg／kg;28日龄使用组分别检测出193．5ug／kg、45．0μg／kg和425．5μg／kg。2日龄使用组休药78天时（即停药71天）,肌肉和肝脏中还能分别检出氧氟沙星11．2μg／kg和12．0μg／kg。实验表明乌骨鸡使用氧氟沙星仅适用于10日龄以下给药并休药70天以上,或不给予该类药物。     

鸡组织中对羟基肉桂酸残留的UPLC检测方法研究

建立了鸡组织(肌肉、肝脏、肾脏)中对羟基肉桂酸(PCA)超高效液相色谱检测方法。组织样品用无水乙醚提取,提取液50℃氮气吹干,20%的甲醇溶液复溶,用0.22μm滤膜过滤。以C18为色谱柱,甲醇-1%乙酸溶液(20/80,v/v)为流动相,检测波长310 nm,流速0.3 mL/min,用超高效液相色谱检测。对羟基肉桂酸标准品工作液在5～400 ng/mL浓度范围内线性关系良好(r=0.9996);组织中药物添加浓度分别为20、50、100μg/kg时,其样品中药物平均回收率分别98.46%～103.66%、85.09%～107.15%和80.27%～97.63%;日内、日间变异系数均≤10%。在该检测条件下,PCA在鸡肌肉、肝脏、肾脏中检测限分别为1μg/kg、2μg/kg和1μg/kg。定量限分别为2μg/kg、4μg/kg和2μg/kg。该方法样品处理简单,且准确度和精密度均符合残留检测方法要求,可以作为对羟基肉桂酸在鸡组织内的残留检测方法。     

磺胺二甲嘧啶在黑鲪体内的药物代谢动力学和残留消除研究

在(14±1)℃水温条件下,对黑鲪单次口灌100 mg/kg体重的磺胺二甲嘧啶,进行药物代谢动力学研究。在(20±2)℃水温条件下,按照《中华人民共和国水产行业标准磺胺类药物水产养殖使用规范》推荐剂量对黑鮶连续5天口灌给予磺胺二甲嘧啶,研究其在黑鮶体内的残留消除规律。血浆、肌肉和肝脏样品采用高效液相色谱检测,DAS2.0药物代谢动力学软件对数据进行处理分析。结果表明磺胺二甲嘧啶在黑鲪血浆、肌肉和肝脏中均符合一室模型,肝脏、血液和肌肉中药物达峰时间分别为6 h,8 h和10 h;峰值浓度分别为26.45μg/g、25.57μg/g和31.15μg/g;连续多次给药后,黑鮶血液、肌肉、肝脏中药物浓度分别在给药后12d、14d、15d后小于最大残留限量要求(0.1mg/kg)。     

高效液相色谱荧光检测法同时检测鸡肉中氟苯尼考及氟苯尼考胺残留

经丙酮、二氯甲烷提取,饱和正己烷脱脂,氮吹仪吹干浓缩后,以乙腈-磷酸二氢钠溶液(0.01 mol/L,含0.005mol/L十二烷基硫酸钠和0.1%三乙胺)(35 :65)为流动相,流速为1.0 mL/min,荧光检测激发波长为225 nm,发射波长285 nm.氟苯尼考在0.01～10.0 mg/L、氟苯尼考胺在0.002 5～2.5 mg/L浓度范围内,本方法线性关系良好,相关系数分别为0.999 7和0.999 8.当添加水平氟苯尼考为15～500 μg/kg、氟苯尼考胺为5～500μg/kg时.该方法平均回收率分别为79.5%～84.6%和80.7 0A～88.2%,相对标准偏差分别为2.8%～6.4%和2.4%～5.3%;检测限分别为5μg/kg和μg/kg.该方法样品处理简单,可同时检测氟苯尼考和氟苯尼考胺的残留,且准确度和精密度均符合残留分析的要求.     

Influence of Different Protocols of Urethral Catheterization after Pharmacological Induction (Ur.Ca.P.I.) on Semen Quality in the Domestic Cat

The aim of this study was to evaluate the influence that different protocols of urethral catheterization after pharmacological induction (Ur.Ca.P.I.) may have on the semen quality of the domestic cat. The study has been divided into two experiments: one in which different dosages of medetomidine administrated are evaluated and the second one in which the timing of the catheterization after pharmacological induction is tested. In the first experiment, 18 cats were sedated with the recommended dosage of medetomidine (130 μg/kg i.m.) while the other 18 were sedated with a lower dose of the same drug (50 μg/kg i.m.). In the second experiment, three groups were implemented, each containing 25 subjects. In group 1, the semen collection was performed immediately once the pharmacological effect of the drug was reached; in group 2, the semen collection was performed three times every 5 min after the pharmacological effect was reached; finally, in group 3, Ur.Ca.P.I. was performed 20 min after the pharmacological effect was reached. All the different protocols permitted sperm collection, nevertheless the first experiment showed a better quality in terms of volume, concentration, total number of spermatozoa (p < 0.01) and quality of the movement (motility p < 0.05 and forward progressive motility p < 0.01), using a high medetomidine dosage rather than 50 μg/kg i.m. In the second experiment, forward motility was statistically higher (p < 0.01) in the first group and total volume was higher (p < 0.01) in the second and third group, while other parameters were statistically not different. Results suggest that a single catheterization immediately after the onset of the pharmacological effect leads to a good‐quality semen with the lowest possibility of damaging the urethra and that a sedation with 130 μg/kg of medetomidine leads to a better quality sperm collection than 50 μg/kg does.     

液相色谱-三重四极杆/线性离子阱复合质谱技术检测牛可食性组织中莫昔克丁的残留

建立了一种可准确定性定量检测4种牛可食性组织中莫昔克丁残留的液相色谱-三重四极杆/线性离子阱(LC-Qtrap)复合质谱分析技术.牛肌肉、肝脏、肾脏和脂肪样品经乙腈提取,高速离心去除蛋白质等杂质,C18柱净化.以0.1％甲酸水溶液和0.1％甲酸乙腈溶液为流动相进行洗脱,在BEH C18色谱柱上实现分离,在电喷雾正离子(...     

绿原酸对猪精液冷冻保存效果的影响

为探究绿原酸对猪精液冷冻保存效果的影响,分别在TCG稀释液中添加不同浓度(15、30、50、80和100 pg/mL)的绿原酸,通过测定冷冻-解冻后精子的活率、顶体完整率、质膜完整率、DNA完整率、超氧化歧化酶(SOD)、过氧化氢酶(CAT)和谷胱甘肽过氧化物酶(GSH-Px)活性来判定对保存效果的影响.结果表明,当添...     

Morphology of Dromedary Camel Oocytes and their Ability to Spontaneous and Chemical Parthenogenetic Activation

The present work was conducted to examine (1) the morphology of dromedary cumulus‐oocytes complexes (COCs), (2) to study the incidence of spontaneous development of oocytes in vivo and (3) to assess the ability of in vitro matured dromedary oocytes to chemical parthenogenetic activation compared with in vitro fertilized (IVF) oocytes. COCs were recovered from dromedary ovaries classified according to their morphology into six categories. Oocyte diameter was measured using eye piece micrometer. For chemical activation, COCs with at least three layers of cumulus‐cells were in vitro matured (IVM) in TCM 199 + 10 μg/ml FSH + 10 IU hCG/ml + 10% FCS + 50 μg/ml gentamycin. COCs were incubated for 40 h at 38.5°C under 5% CO₂ in humidified air. After IVM, matured oocytes with first polar body (first Pb) were divided into two groups. Group 1: activated in 7% ethanol (E) for 5 min followed by culture in 2 mM 6‐dimethylaminopurin (6‐DMAP, E D, subgroup 1) or 10 μg/ml cycloheximide (CHX, E CHX, subgroup 2) for 3.5 h at 38.5°C under 5% CO₂. In group 2, oocytes were activated using 50 μM Ca A23187 (Ca A) for 5 min followed by culture in 2 mM 6‐DMAP (Ca D, subgroup 3) or 10 μg/ml CHX(Ca CHX, subgroup 4) for 3.5 h at 38.5°C under 5% CO₂. For control group, IVM oocytes were fertilized using frozen‐thawed camel spermatozoa separated by swim‐up method then suspended in Fert‐TALP medium supplemented with 6 mg/ml BSA (FAF) + 10 μg/ml heparin. In all groups, oocytes were in vitro cultured in SOFaa medium + 5% FCS and 5 μg/ml insulin + 50 μg/ml gentamycin. Cleavage rate and embryo development were checked on Days 2, 5 and 8. An average of 11.3 ± 0.3 COCs were recovered/dromedary ovary. Categories 1 and 2 represented 33.1% and 34.8%, respectively, and were significantly higher (p < 0.01) than the other categories (19.1, 9.2 and 2.6% for categories 3–5, respectively). Category 6 (embryo‐like structures) represented 1.2% of the recovered oocytes, staining of these embryo‐like structures with orcien dye indicated the presence of divided cells with condensed nuclei. Dromedary oocytes averaged 166.2 ± 2.6 μm in diameter with black cytoplasm. Chemical activation of IVM dromedary oocyte with first Pb in 7% ethanol or 50 μM Ca A followed by culture in 2 mM 6‐DMAP showed significantly higher (p < 0.01) cleavage and developmental rates to the morula stage than oocytes activated using 7% ethanol or 50 μM Ca A followed by 10 μg/ml CHX or in vitro fertilized control group. Higher (p < 0.01) proportion of oocytes sequentially cultured in 10 μg/ml CHX or that in vitro fertilized were arrested at the 2–4‐cell stage compared with that cultured in 6‐DMAP.