Objective:To determine the effect of different cervical dilators on cervical dilation and reproductive performance of fat-tailed ewes.Methods: In experiment 1140 ewes were divided into seven groups with seven differen...Objective:To determine the effect of different cervical dilators on cervical dilation and reproductive performance of fat-tailed ewes.Methods: In experiment 1140 ewes were divided into seven groups with seven different treatments as following: 10 mL normal saline (control group), 100 IU oxytocin (OT group), 100 μg estradiol and 100 IU oxytocin (E2+OT group), 5 mL relaxin (R group), 2 mL sensiblex (SEN group), 200 μg misoprostol (MIS group) or 200 μg dinoprostone (DIN group). In experiment 2, artificial insemination was applied for evaluation of reproductive performance in experimental groups.Results: In experiment 1, the highest cervical dilation was observed in OT (90%) and E2+OT (100%) groups (P<0.05), while no significant differences was found among DIN, MIS, SEN and R groups (80%, 75%, 70% and 65%, respectively). In addition, the lowest cervical dilation was observed in control group. Experiment 2 found no significant differences among control, OT and E2+OT groups. The highest pregnancy rate, parturition rate and lambing rate were observed in OT groups (60%, 60% and 70%, respectively) and E2+OT groups (65%, 60% and 70%, respectively) compared to SEN, R, MIS and DIN groups (P<0.05).Conclusions:Oxytocin treatment alone or with estradiol could be used as a suitable dilator for improving reproductive efficiency during artificial insemination in fat-tailed ewes.展开更多
In this study fat-tail weight was estimated by external fat-tail dimensions. External fat-tail dimensions included upper, middle and lower width, length, length of gap, depth, upper and middle circumference recorded o...In this study fat-tail weight was estimated by external fat-tail dimensions. External fat-tail dimensions included upper, middle and lower width, length, length of gap, depth, upper and middle circumference recorded on 1,482 head of Lori-Bakhtiari lambs at 6 months. Of these about 311 lambs were slaughtered at the age of six months. Prediction equations were derived for fat-tail weight by multiple regression analyses with two methods. The results showed that the measure of middle circumference fat-tail was as most important measure in estimation of fat-tail weight. The measure of middle circumference fat-tail accounted for 76 percent of variation in fat-tail weight. The regression equations for predicting fat-tail weight using external fat-tail dimensions obtained from stepwise regression procedure can be estimated only with using from the lower width, length, middle circumference fat-tail and body weight with high acc, uracy （0.92）. Average of fat-tail weight estimated in the age of six months in lambs was 2.39 kg. The highest regression coefficient of external fat-tail dimensions on fat-tail weight observed for the length of fat-tail （0.095 kg）. Results of the present investigation showed that fat-tail weight in live sheep of Lori-Bakhtiari, could be estimated by measuring external fat-tail dimensions.展开更多
为了解脂尾绵羊的尾部性状特征,该试验选择滩羊典型生产区开展调查和试验观测,通过测量滩羊尾部尺寸、重量及尾骨特征,分析滩羊尾型特征及脂尾性状间的表型相关。结果显示:滩羊尾型可分为圆盘形尾、楔形尾和三角形尾3种;滩羊尾椎数量为1...为了解脂尾绵羊的尾部性状特征,该试验选择滩羊典型生产区开展调查和试验观测,通过测量滩羊尾部尺寸、重量及尾骨特征,分析滩羊尾型特征及脂尾性状间的表型相关。结果显示:滩羊尾型可分为圆盘形尾、楔形尾和三角形尾3种;滩羊尾椎数量为17~21枚不等:根据尾椎椎骨的完整程度,滩羊的尾椎可分为4类,第1类尾椎的横突、棘突、椎弓、椎孔完整,第2类尾椎的横突完整,棘突、椎弓、椎孔退化,第3类尾椎的横突、棘突、椎弓、椎孔均发生退化,第4类尾椎椎骨之间融合,无关节囊。滩羊尾重与尾厚,尾脂率与尾重及尾脂重之间相关性显著。滩羊尾重与尾长、尾厚之间的最优回归方程为:y=-2.237+0.401 x 3+0.041 x 1(R 2=0.634,P<0.01)。展开更多
为探究丁酸梭菌对小尾寒羊宰后成熟过程中挥发性风味物质的影响及其可能机制,以6月龄小尾寒羊为研究对象,取其背最长肌进行宰后成熟(4℃),然后分别在第0、1、2、3、4、5天对羊肉中的挥发性风味物质和腺苷酸活化蛋白激酶(adenosine monop...为探究丁酸梭菌对小尾寒羊宰后成熟过程中挥发性风味物质的影响及其可能机制,以6月龄小尾寒羊为研究对象,取其背最长肌进行宰后成熟(4℃),然后分别在第0、1、2、3、4、5天对羊肉中的挥发性风味物质和腺苷酸活化蛋白激酶(adenosine monophosphate activated protein kinase,AMPK)、乙酰辅酶A羧化酶(acetyl CoA carboxylase,ACC)和肉毒碱脂酰转移酶1(carnitine palmitoyltransferase,CPT1)等脂肪代谢相关酶活性进行测定。电子鼻测定结果显示,丁酸梭菌组小尾寒羊肉中的烷类、氢过氧化物和氮氧化合物的含量更加丰富;结合气相色谱-质谱联用技术测定结果可知,丁酸梭菌组小尾寒羊肉中醛、醇及酮类化合物的种类较为丰富,而脂肪氧化产物如辛醛、壬醛、癸醛、庚醛的含量均明显降低;利用相对气味活度值法筛选了宰后成熟过程中两组小尾寒羊肉中共有的关键风味物质,包括辛醛、壬醛、反-2-癸烯醛和1-辛烯-3-醇,其中癸醛对羊肉风味的贡献最大。与对照组相比,丁酸梭菌组小尾寒羊肉中AMPK和CPT1的含量在宰后成熟过程中均显著降低(P<0.05),而丁酸梭菌组小尾寒羊肉中ACC含量在宰后成熟第0、1、3、5天显著高于对照组(P<0.05);相关性分析结果表明,AMPK和CPT1与壬醛均呈极显著正相关(P<0.001),而ACC与壬醛和癸醛呈极显著负相关(P<0.001)。综上,日粮添加丁酸梭菌可能通过调控AMPK-ACC-CPT1通路进而影响小尾寒羊宰后成熟过程中的挥发性风味物质。展开更多
In the United States, envenomations by native scorpion species such as Centruroides are common and generally well-tolerated. On the contrary, Androctonus species envenomations are exceedingly rare outside the Middle E...In the United States, envenomations by native scorpion species such as Centruroides are common and generally well-tolerated. On the contrary, Androctonus species envenomations are exceedingly rare outside the Middle East and North Africa but are particularly deadly. We report a case of envenomation by an Egyptian Yellow Fat Tail (Androctonus amoreuxi) scorpion and the subsequent clinical course. A hobbyist and dangerous scorpion collector was stung by his pet Androctonus amoreuxi, purchased online. Our patient rapidly developed severe localized pain followed by systemic effects, including tachycardia, hypertension, tachypnea, anxiety, GI symptoms, diplopia, dyspnea, profound myalgias, and intense paresthesias. Ultimately, he was diagnosed with a grade 2-to-3 scorpion envenomation based upon evidence of autonomic hyperactivity and cranial nerve dysfunction. He never progressed to cardiopulmonary compromise;neither dobutamine nor antivenom was administered, and he improved with supportive care alone. Case details were verified in person and via electronic medical record review.展开更多
文摘Objective:To determine the effect of different cervical dilators on cervical dilation and reproductive performance of fat-tailed ewes.Methods: In experiment 1140 ewes were divided into seven groups with seven different treatments as following: 10 mL normal saline (control group), 100 IU oxytocin (OT group), 100 μg estradiol and 100 IU oxytocin (E2+OT group), 5 mL relaxin (R group), 2 mL sensiblex (SEN group), 200 μg misoprostol (MIS group) or 200 μg dinoprostone (DIN group). In experiment 2, artificial insemination was applied for evaluation of reproductive performance in experimental groups.Results: In experiment 1, the highest cervical dilation was observed in OT (90%) and E2+OT (100%) groups (P<0.05), while no significant differences was found among DIN, MIS, SEN and R groups (80%, 75%, 70% and 65%, respectively). In addition, the lowest cervical dilation was observed in control group. Experiment 2 found no significant differences among control, OT and E2+OT groups. The highest pregnancy rate, parturition rate and lambing rate were observed in OT groups (60%, 60% and 70%, respectively) and E2+OT groups (65%, 60% and 70%, respectively) compared to SEN, R, MIS and DIN groups (P<0.05).Conclusions:Oxytocin treatment alone or with estradiol could be used as a suitable dilator for improving reproductive efficiency during artificial insemination in fat-tailed ewes.
文摘In this study fat-tail weight was estimated by external fat-tail dimensions. External fat-tail dimensions included upper, middle and lower width, length, length of gap, depth, upper and middle circumference recorded on 1,482 head of Lori-Bakhtiari lambs at 6 months. Of these about 311 lambs were slaughtered at the age of six months. Prediction equations were derived for fat-tail weight by multiple regression analyses with two methods. The results showed that the measure of middle circumference fat-tail was as most important measure in estimation of fat-tail weight. The measure of middle circumference fat-tail accounted for 76 percent of variation in fat-tail weight. The regression equations for predicting fat-tail weight using external fat-tail dimensions obtained from stepwise regression procedure can be estimated only with using from the lower width, length, middle circumference fat-tail and body weight with high acc, uracy （0.92）. Average of fat-tail weight estimated in the age of six months in lambs was 2.39 kg. The highest regression coefficient of external fat-tail dimensions on fat-tail weight observed for the length of fat-tail （0.095 kg）. Results of the present investigation showed that fat-tail weight in live sheep of Lori-Bakhtiari, could be estimated by measuring external fat-tail dimensions.
文摘为了解脂尾绵羊的尾部性状特征,该试验选择滩羊典型生产区开展调查和试验观测,通过测量滩羊尾部尺寸、重量及尾骨特征,分析滩羊尾型特征及脂尾性状间的表型相关。结果显示:滩羊尾型可分为圆盘形尾、楔形尾和三角形尾3种;滩羊尾椎数量为17~21枚不等:根据尾椎椎骨的完整程度,滩羊的尾椎可分为4类,第1类尾椎的横突、棘突、椎弓、椎孔完整,第2类尾椎的横突完整,棘突、椎弓、椎孔退化,第3类尾椎的横突、棘突、椎弓、椎孔均发生退化,第4类尾椎椎骨之间融合,无关节囊。滩羊尾重与尾厚,尾脂率与尾重及尾脂重之间相关性显著。滩羊尾重与尾长、尾厚之间的最优回归方程为:y=-2.237+0.401 x 3+0.041 x 1(R 2=0.634,P<0.01)。
文摘为探究丁酸梭菌对小尾寒羊宰后成熟过程中挥发性风味物质的影响及其可能机制,以6月龄小尾寒羊为研究对象,取其背最长肌进行宰后成熟(4℃),然后分别在第0、1、2、3、4、5天对羊肉中的挥发性风味物质和腺苷酸活化蛋白激酶(adenosine monophosphate activated protein kinase,AMPK)、乙酰辅酶A羧化酶(acetyl CoA carboxylase,ACC)和肉毒碱脂酰转移酶1(carnitine palmitoyltransferase,CPT1)等脂肪代谢相关酶活性进行测定。电子鼻测定结果显示,丁酸梭菌组小尾寒羊肉中的烷类、氢过氧化物和氮氧化合物的含量更加丰富;结合气相色谱-质谱联用技术测定结果可知,丁酸梭菌组小尾寒羊肉中醛、醇及酮类化合物的种类较为丰富,而脂肪氧化产物如辛醛、壬醛、癸醛、庚醛的含量均明显降低;利用相对气味活度值法筛选了宰后成熟过程中两组小尾寒羊肉中共有的关键风味物质,包括辛醛、壬醛、反-2-癸烯醛和1-辛烯-3-醇,其中癸醛对羊肉风味的贡献最大。与对照组相比,丁酸梭菌组小尾寒羊肉中AMPK和CPT1的含量在宰后成熟过程中均显著降低(P<0.05),而丁酸梭菌组小尾寒羊肉中ACC含量在宰后成熟第0、1、3、5天显著高于对照组(P<0.05);相关性分析结果表明,AMPK和CPT1与壬醛均呈极显著正相关(P<0.001),而ACC与壬醛和癸醛呈极显著负相关(P<0.001)。综上,日粮添加丁酸梭菌可能通过调控AMPK-ACC-CPT1通路进而影响小尾寒羊宰后成熟过程中的挥发性风味物质。
文摘In the United States, envenomations by native scorpion species such as Centruroides are common and generally well-tolerated. On the contrary, Androctonus species envenomations are exceedingly rare outside the Middle East and North Africa but are particularly deadly. We report a case of envenomation by an Egyptian Yellow Fat Tail (Androctonus amoreuxi) scorpion and the subsequent clinical course. A hobbyist and dangerous scorpion collector was stung by his pet Androctonus amoreuxi, purchased online. Our patient rapidly developed severe localized pain followed by systemic effects, including tachycardia, hypertension, tachypnea, anxiety, GI symptoms, diplopia, dyspnea, profound myalgias, and intense paresthesias. Ultimately, he was diagnosed with a grade 2-to-3 scorpion envenomation based upon evidence of autonomic hyperactivity and cranial nerve dysfunction. He never progressed to cardiopulmonary compromise;neither dobutamine nor antivenom was administered, and he improved with supportive care alone. Case details were verified in person and via electronic medical record review.
