Disturbance in the growth of the tibia and femur in dogs.

The clinical and radiographic features associated with premature cessation of the growth of the tibia (four) and femur (eight) in 12 dogs are described. Surgical correction of the resultant deformity was possible in only a few cases. Trauma was thought to be the cause of the local growth plate disorder.     

Primary liver-cell tumour (hepatoma) in sudanese desert sheep—A report of two cases

Summary At meat-inspection examination after abattoir slaughter, two Desert sheep oged 3 to 4 years showed hepatoma. There were several tumours in the liver of each but no metastatic lesions in other organs of the body. The macroscopic and microscopic appearances are described as also the chemical changes in the serum constituents.     

Studies on digenetic trematodes of the genus Prosthodendrium Dollfus, 1931 from some Egyptian bats. 2. Trematodes of the subgenus Paralecithodendrium Odhner, 1911

A review of the subgenus Paralecithodendrium Odhner, 1911 is presented. Prosthodendrium (Paralecithodendrium) glandulosum (Looss, 1896) is redescribed from some Egyptian bats. The present study indicated that this species is a very variable one. Moreover, a new species P. (Paralecithodendrium) aegyptiacum is described from two species of bats.     

奶牛隐性乳房炎的研究进展

奶牛乳房炎是奶牛常见、多发的疾病之一,严重制约着奶牛养殖业的发展,文章对奶牛乳房炎的病因、发病机理、临床症状、诊断方法及防治措施等进行了综述,这将对内蒙古自治区奶牛养殖业的发展产生积极影响.     

华北土石山区森林枯落物与土壤水文效应研究

以河北省易县崇陵小流域3种不同林分的枯落物层和土壤层为研究对象,对其水文效应进行初步研究。结果表明:3种林分枯落物蓄积量差异较大,侧柏枯落物蓄积量最大,高达57.9t/hm2,油松枯落物蓄积量次之,为29.8t/hm2,刺槐枯落物蓄积量最小,是28.7t/hm2;3种林分枯落物中,侧柏林的枯落物持水能力最强,为114.5t/hm2,油松林的枯落物持最小,仅为60.1t/hm2;3种林分下土壤的平均容重和总孔隙度差别不大,容重的变化范围在1.46~1.66g/cm3;总孔隙度均偏低,具体表现为:侧柏(30.86%)油松(29.31%)刺槐(27.1%);3种林分林下土壤持水能力有所差异,表现为:侧柏油松刺槐。土壤持水能力与各林分林下土壤的孔隙度大小呈正相关,即土壤孔隙度越大,土壤的持水能力越强;3种林分的土壤稳渗速率相差较大,表现为:刺槐(10.50mm/min)油松(2.80mm/min)侧柏(0.80mm/min)。     

西南矮马矮小性状基因SHOX的克隆测序和多态性研究

本研究首次克隆出西南马矮小性状基因完整第二外显子序列,GenBank登录号为EU556739;通过PCR-SSCP方法对8个品种150匹马的该序列做了多态性分析,在P2位点上268处有1个G→A的突变,和431处有1个T→G的突变导致了等位基因B变为等位基因A.该位点除云南文山马(WS)的优势基因型和优势等位基因分别为AB型和B外,其余类群马均为BB型和B.云南丘北马(QB)、云南文山马(WS)、云南大理马(DL)、建昌马(JC)和设特兰马(ST)在P2位点上处于Hardy-Weinberg平衡状态.     

几种生态因子对红砂和霸王种子萌发与幼苗生长的影响

自然条件下进行了土壤温度、水分、播深及覆沙地境对红砂和霸王种子萌发与幼苗生长的效应研究,结果显示,模拟阵雨期(人工洒水)覆沙和未覆沙试验小区白天播种层土壤温度均较高,尤其中午(14:00)覆沙小区1和4 cm播种层土壤温度平均值分别高达43.2和37.3℃,未覆沙小区分别高达38.0和33.6℃.高温引发种子次生休眠是该期红砂和霸王种子不能萌发的主要原因.而且播种层土壤含水量日内下降十分明显,其中覆沙和未覆沙小区1 cm土层平均土壤含水量下降至0.11%和2.62%,也会引发种子产生次生休眠,成为红砂和霸王种子不能萌发的另一原因.自然连续降水期2种试验小区播种层平均土壤温度适宜,播种层土壤含水量高而稳定,满足了红砂和霸王种子萌发的适宜温度和较高水势的条件.因此,在干旱荒漠区进行荒漠草地的人工辅助建植,需要依靠连续性降水过程.自然条件下霸王发芽率最高的播深处理在覆沙小区为2 cm、未覆沙小区为1 cm;在2种试验小区内霸王幼苗生物量最大的播深处理均为2和3 cm.覆沙较未覆沙地境有利于霸王种子萌发和幼苗的生长.播种当年霸王地上生物量为红砂的75～117倍.     

土霉素药渣栽培杏鲍菇可行性研究

以杏鲍菇为试材,在玉米芯中添加不同比例的土霉素药渣作为栽培杏鲍菇的辅料,对土霉素药渣栽培杏鲍菇的可行性进行研究和分析。结果表明:土霉素药渣含有木质素15.58%、纤维素39.62%、蛋白质50.02%及灰分13.15%;玉米芯中随着土霉素药渣添加比例的增加,呈现菌丝生长速率加快、满瓶天数减少的趋势,且添加适宜比例的土霉素药渣,可显著提高杏鲍菇鲜菇产量和生物学效率,其中83%玉米芯添加15%土霉素药渣的处理较优;杏鲍菇对土霉素的降解率可达到99.9%,4个添加土霉素药渣处理的杏鲍菇子实体均未检测到土霉素残留。     

Ruminal excretion of sulfadimethoxine and sulfadimethyloxazole in goats and their influence on some enzyme activities and renal clearances

Five clinically health goats were injected with sulfadimethoxine and sulfadimethyloxazole in a single dose of 100 mg/kg b. wt. by intravenous route. Highest concentration levels of sulfadimethoxine and sulfadimethyloxazole in rumen were detected 1 hour following intravenous injection, then the concentration for both compounds declined at 12 and 8 hours post administration, respectively. In addition, both types of sulfonamide completely disappeared in ruminal fluid samples taken after 24 and 12 hours, respectively. The rate of acetylation for sulfadimethoxine and sulfadimethyloxazole were nearly similar and occurred to a high extent in ruminal fluid (22.95 and 23.72%, respectively). On the other hand, both tested drugs increased significantly the ruminal gas production from the first to eight hours after i.v. injection in goats. Changes in the serum enzyme activities (SGOT, SGPT and alkaline phosphatase) observed with sulfadimethoxine and sulfadimethyloxazole, and represented by a significant decrease in the activity of SGOT and SGPT level, alkaline phosphatase 4 hours sulfadimethoxine and in GOT/GPT ratio 24 and 48 hours after i.v. injection, respectively. The creatinine clearance was significantly decreased after 4 hours following the i.v. administration of sulfadimethoxine and sulfadimethyloxazole in goats.     

Genital bovine papillomavirus infection in Saudi Arabia.

Genital bovine papillomavirus infection was observed for the first time in the Al-Ahsa region of Saudi Arabia. The disease involved 1 female and 2 male 2-4-year-old crossbred cattle. Fibropapillomas (warts) were limited to the prepuce and vulva. Electron micrographs of thin sections of the lesions revealed the presence of intranuclear viruslike particles. Using a broadly cross-reactive rabbit polyclonal antiserum directed against papillomavirus group-specific antigens, the infection was confirmed by immunohistochemical staining of paraffin-embedded tissues to be due to a papillomavirus. Staining with a series of monoclonal antibodies of various specificities indicated that the virus was bovine papillomavirus type 1. Attempts to propagate the virus by inoculation of tumor homogenates onto chorioallantoic membranes of chicken embryos were unsuccessful.