Presumptive acute lung injury following multiple surgeries in a cat

A 12-year-old, 3.5-kg spayed female domestic shorthair cat had a tracheal mass identified as malignant B-cell lymphoma. The cat had tracheal resection and subsequently developed laryngeal paralysis. Due to multiple episodes of respiratory distress the cat subsequently had tracheal surgeries. Finally, the cat had a sudden onset of severe respiratory distress and collapsed. Computed tomography imaging and arterial blood gas analysis supported a diagnosis of acute lung injury.     

合理调整免疫程序 科学实施动物免疫

现阶段我国动物疫病的防控主要采取免疫的策略,现行的免疫方案中存在着一些问题,各地区和养殖企业应结合本地区和/或本场的实际情况,制定出具有更强的指导性、可操作性和自己特色的免疫方案,更好地指导动物的免疫工作。     

miRNA在脂代谢中的研究进展

脂肪是人和动物用以贮存能量的主要形式,脂类代谢在机体生命活动中发挥着重要作用,而脂类代谢调控对于畜牧生产以及人类疾病治疗都有重要意义。miRNA(microRNA,译作微RNA或小分子RNA)是近年来在真核生物体内发现的一类长度约22个核苷酸的内源性非编码单链RNA,主要通过与靶基因mRNA靶标区域的互补配对,发挥降解靶mRNA或抑制mRNA翻译的作用。它能参与多种生物学过程包括细胞凋亡、分化和癌变等,近几年其关于脂代谢的重要调节作用也相继被报导。本文主要对调节脂代谢的一些关键miRNA的研究进行综述。     

复合益生菌对乳鸽生长性能、屠宰性能、免疫器官指数和血清生化指标的影响

本试验旨在研究复合益生菌对乳鸽生长性能、屠宰性能、免疫器官指数和血清生化指标的影响。选取72对种鸽和144只1日龄乳鸽,乳鸽称量初始体重后随机分成4个组,每个组6个重复,每个重复3对种鸽及6只乳鸽。在饲喂相同基础饲粮的同时,对照组补饲保健砂,Ⅰ组补饲保健砂+复合菌Ⅰ(嗜酸乳杆菌+乳双歧杆菌),Ⅱ组补饲保健砂+复合菌Ⅱ(乳双歧杆菌+粪肠球菌),Ⅲ组补饲保健砂+复合菌Ⅲ(嗜酸乳杆菌+粪肠球菌)。试验期28 d。结果表明:与对照组相比,1)在生长性能方面,Ⅱ组显著提高了乳鸽的28日龄体重和平均日增重(P0.05)。2)在屠宰性能方面,Ⅱ组显著提高了乳鸽的屠宰率、半净膛率和全净膛率(P0.05);Ⅰ组和Ⅲ组显著降低了乳鸽的腹脂率(P0.05)。3)在免疫器官指数方面,Ⅱ组显著提高了乳鸽的胸腺指数(P0.05)。4)在血清生化指标方面,Ⅰ组和Ⅲ组显著降低了乳鸽血清中总蛋白和球蛋白的含量(P0.05);Ⅰ组、Ⅱ组和Ⅲ组均显著降低了乳鸽血清中肌酐的含量(P0.05);Ⅱ组和Ⅲ组显著降低了乳鸽血清中甘油三酯的含量(P0.05);Ⅱ组显著增加了乳鸽血清中高密度脂蛋白的含量(P0.05)。综上所述,保健砂中添加复合益生菌改善了乳鸽的生长性能、屠宰性能、免疫器官指数和血清生化指标。     

Effect of the strain combination of the donor and recipient on the production efficiency of W‐bearing sperm in mixed‐sex germline chimeric chickens

Effect of the strain combination of the donor and recipient on production efficiency of W‐bearing sperm in mixed‐sex chimeric testes was analyzed. The combinations of the donors and recipients were White Leghorn (WL) and Rhode Island Red (RIR), and vice versa. Generated mixed‐sex chimeras that had the male phenotype at sexual maturity were classified into four groups: (1) a female WL donor and a male RIR recipient; (2) a male WL donor and a female RIR recipient; (3) a female RIR donor and a male WL recipient; (4) a male RIR donor and a female WL recipient. The mean number of W‐bearing sperm detected by in situ hybridization among 10 000 sperm observed were 147, 165, 30 and 45 in groups 1, 2, 3 and 4, respectively. The numbers in groups 1 and 2 were both significantly higher than those of groups 3 and 4 (P < 0.05). The combination of a WL donor and a RIR recipient produced W‐bearing sperm more efficiently than the reverse combination.     

荷斯坦供体牛连续超排试验

为探讨荷斯坦奶牛连续超数排卵的效果,对8头供体以30d为间隔连续超排3次,3次超排有效率分别为：100(8/8)、100(8/8)和100(8/8),3次头均荻胚数分别为：10.63±3.18枚、10.13±1.78枚和10.38±1.58枚,3次头均可用胚数分别为：7.13±1.29枚、6.38±0.92枚和5.88±1.17枚。3次超排的头均荻胚数间和头均可用胚数间差异不显著。结果表明,荷斯坦奶牛能够以30d为间隔进行连续超排。     

琼脂扩散试验检测附红细胞体抗体

采用琼脂扩散试验检测自然感染猪附红细胞体抗体和兔抗猪附红细胞体抗体,结果表明,猪附红细胞体抗原与自然感染附红细胞体猪血清、首免和二次免疫后收集的兔抗血清的琼脂扩散试验结果均呈阴性,第3次免疫后的血清效价为1∶16。     

猪弓形体病的血清学调查

采用间接血凝试验(IHA)对广东省部分地区猪场送检的269份血清进行猪弓形体病的血清学检测,结果表明有61份血清阳性,平均阳性率为22.7%,最高阳性率为71.4%,该地区猪场有猪弓形体病感染。     

红色荷斯坦牛与西改牛杂交一代产奶性能的研究

为提高西改牛产奶量，选用外表与其相似的红色荷斯坦牛精液对西改牛进行杂交改良，结果表明，杂一代牛一、二、三胎泌乳期平均产奶量达到4010.33 kg；乳脂、非脂、蛋白质、乳糖含量分别为3.54%、8.52%、2.72%、4.70%，说明，红杂牛完全可作为奶牛的后备资源，加以开发利用。     

宠物犬比美貌工作犬展雄姿——记者眼中的"2007南京全犬种展评暨训练比赛"

在这里可以学习各类犬展赛事的专业知识,如牵犬秘诀、赛前美容、犬展赛制等等,同时也能找寻到你心目中喜爱的犬的身影。