冷适应对大鼠仔鼠和雏鸡某些内分泌腺和激素水平的影响

以20只健康Wistar大鼠仔鼠和30只罗曼雏鸡为试验对象，研究冷适应对大鼠仔鼠和雏鸡某些内分泌腺和激素水平的影响。冷适应组大鼠肾上腺皮质束状带宽度和肾上腺皮质束状带的细胞数目极显著和显著（P＜0、05）地高于常温对照组，60日龄仔鼠在冷暴露72小时后，冷适应组T3和皮质醇明显升高，T3比常温组提高19．％，皮质醇比常温组提高37．17％而GH、T4及Ins变化不明显。冷适应组雏鸡肾上腺肾间组织面积和肾间组织细胞数分别比常温组提高26．05％和3．25％，垂体嗜酸性细胞和嗜碱性细胞数目分别比常温组提高12．98％和8．59％。雏鸡在35日龄试验结束时，冷适应组T3，T4和胰岛素分别较常温组抵63．85％、44．22％31．85（P＜0．05），而皮质醇比常温组提高90．37％。     

新西兰白兔胃底腺等器官生后发育及超微结构变化的研究

通过组织学及电镜技术对新西兰白兔胃底腺、小肠绒毛及肠腺的发育进行了，结果表明：新西兰白兔胃底腺、肠腺和肠绒毛的生长表现出明显的阶段性，胃底腺高度生长的最快阶段约在初生至１周龄及２－６周龄，小肠绒毛高度、宽度及表面生长的最快阶段约在初生至１周龄及３－６周龄，肠腺高度生长的最快阶段与小肠绒毛的高度生长基本。     

CHANGES IN ULTRASONOGRAPHIC APPEARANCE OF ADRENAL GLANDS IN DOGS WITH PITUITARY-DEPENDENT HYPERADRENOCORTICISM TREATED WITH TRILOSTANE

Trilostane, a 3beta-hydroxysteroid dehydrogenase inhibitor, has been used successfully over the last few years for the treatment of canine pituitary-dependent hyperadrenocorticism. In a prospective study of 19 dogs with pituitary-dependent hyperadrenocorticism, the adrenal glands were measured before and at least 6 months after initiation of trilostane therapy. Right adrenal gland length and caudal pole thickness and left adrenal gland caudal pole thickness increased significantly (p < or = 0.05); there was no significant change in left adrenal gland length. Enlargement of adrenal glands during trilostane therapy may occur as a result of suppression of the negative feedback mechanism affecting cortisol production.     

枣粘虫性行为时辰节律的研究

本文利用腺体提取、瓶内收集、触角电位和田间试验等方法对枣粘虫产生和释放性信息素时辰节律进行了研究。其中瓶内收集性信息素的方法,在研究昆虫释放性信息素时辰节律方面报道很少,更重要的是,此法在我们的实验中取得了比较满意的效果。研究结果表明:(1)羽化后1—6天的提取物产生的触角电位无明显差异,说明性信息素在此期间的产生与日龄无关(2)腺体中性信息素的含量高峰在凌晨4点,而从体内往体外释放的高峰在早晨7点。(3)利用处女雌蛾不同时辰的诱蛾量的田间试验也进一步证明了枣粘虫产生和释放性信息素与交配行为在时辰节律上的同步性。     

Ultrastructure of the tubular glands in the isthmus region of the oviduct in laying and natural moulting commercial egg‐type chickens

The study investigated the ultrastructural characteristics of tubular gland and duct cells, as well as luminal gland cells in the isthmus region of the oviduct of laying and natural moulting hens. Tubular glands in laying birds were composed of type 1 and 2 cells. Based on the preponderance of each cell type, in relation to the location of a developing egg in the oviduct of the domestic fowl, these gland cells may represent different functional states of the same cell. The findings of the study on natural moulting birds suggest that autophagy is a process confined to the early stages of degeneration, while necrosis occurs in the terminal stages.     

猪胴体淋巴结中金黄色葡萄球菌的分离与鉴定

随机采取西宁市某生猪屠宰场猪胴体淋巴结60份,进行细菌常规分离培养,结果分离出金黄色葡萄球菌菌株40株,表明该批猪胴体中的金黄色葡萄球菌带菌率可能较高,应引起有关部门的重视。     

Standing transcutaneous surgical excision of a sialolith in an 11-year-old Thoroughbred mare

An 11-year-old Thoroughbred mare was diagnosed with sialolithiasis of the right parotid salivary duct. A firm nonpainful subcutaneous mass was palpable in the right maxillary region adjacent to premolar 4 (tooth 108). Radiographic and ultrasonographic examinations identified a discrete mineralised ovoid mass that was hyperechoic and produced an acoustic shadow. Surgical excision of the mass was performed under standing sedation using a transcutaneous approach and the excised sialolith submitted for histopathological and mineral composition analyses. Histological examination found no evidence of a nidus at the sialolith's core. Mineral analysis of the sialolith revealed its composition to be 40% calcium phosphate (apatite) and 60% calcium carbonate. The mare recovered with no post-operative complications and was clinically unremarkable 2 years later.