Extrinsic cardiac nerve segments in the domestic dog (Canis familiaris- Linnaeus, 1758). Comparative study in young and adult dogs

In this paper, important connections between the two main contingents of the autonomic nervous system, intrinsic and extrinsic visceral plexus were analysed. Concerning heart innervation, the territories of extrinsic innervation are very important in the treatment of congenital or acquired cardiopathy, thoracic neoplasia and aortic arch persistence, among others. This research compared young and adult extrinsic cardiac innervation and described the surgical anatomic nerve segments. Animals were perfused with a 10% formaldehyde solution in PBS (0.1 m) (pH 7.4) and submitted to macro- and meso-scopic dissection immersed in 60% acetic acid alcoholic solution and 20% hydrogen peroxide aqueous solution. The nerve segments were assigned as: right vagus nerve segment, left vagus nerve segment, right middle cervical ganglion segment, left middle cervical ganglion segment, right caudal laryngeal nerve segment, left caudal laryngeal nerve segment, right phrenic nerve segment and left phrenic nerve segment.     

Pig producer attitude towards surgical castration of piglets without anaesthesia versus alternative strategies

A group of 160 Flemish pig farmers (n=160) were surveyed about their attitude towards surgical castration with anaesthesia (SCA) and without (SCN), immunocastration (IC), sperm sexing (SS) and the production of entire males (EM). The farmers' general preference was recorded as SCN>SS>SCA=IC>EM. The farmers' self-reported knowledge of the strategies was associated with their preference for SCA (negatively) and SS (positively). Herd size was correlated with farmers' preference for SCA (negatively) and SS (positively). Farmers perceived surgical castration without anaesthesia as the most favourable strategy in terms of farm profitability, animal performance and effectiveness against boar taint, but they expected the lowest consumer acceptance for this strategy. Surgical castration with anaesthesia was ranked the least favourable in terms of labour conditions. Production of entire males was viewed as the least profitable and the least effective strategy. Sperm sexing was positively perceived, particularly in terms of labour conditions, animal welfare, effectiveness and expected consumer acceptance. The farmers' opinion was quite homogeneous, especially regarding surgical castration without anaesthesia and production of entire males. Increasing our understanding of the farmers' perceptions will hopefully facilitate communication about this intricate issue.     

Morphometric and quantitative evaluation of the NADH-diaphorase positive myenteric neurons of the jejunum of streptozotocin-diabetic rats supplemented with acetyl-L-carnitine

Summary In this study we investigated the effect of the acetyl-L-carnitine (ALC) supplementation on the myenteric neurons of the jejunum of rats made diabetic at the age of 105 days by streptozotocin (35 mg/kg body weight). Four groups were used: non-diabetic (C), non-diabetic supplemented with ALC (CC), diabetic (D), diabetic supplemented with ALC (DC). After 15 weeks of diabetes induction the blood was collected by cardiac puncture to evaluate glycaemia and glycated haemoglobin. Next the animals were killed and the jejunum was collected and subjected to whole-mount preparation to evidence the myenteric neurons through the histochemical technique of the NADH-diaphorase. The neuronal counts were made in 80 microscopic fields, in tissue samples of five animals of each group. The profiles of the cell bodies of 1000 neurons per group were analysed. Diabetes induced a significant increase in the area of the cell body and decrease in the number of NADH-diaphorase positive myoenteric neurons. ALC suplementation to the diabetic group promoted smaller hypertrophic effects and less neuronal loss than in the myoenteric neurons of the diabetic rats, and in addition diminished the body weight decrease and reduced the fasting glycaemia.     

Sodium salicylate attenuates lipopolysaccharide (LPS)-induced adipsia, but not hypophagia, in broiler chickens

A study was conducted to determine the influence of sodium salicylate on the behaviour and the food and water consumption of broiler chickens after lipopolysaccharide (LPS) injection. An oral dose of 100 mg/kg sodium salicylate was given and an acute phase reaction in broiler chickens was provoked through the intravenous injection of Escherichia coli LPS. Water intake was higher in the LPS and salicylate-treated group than in the positive control group. The salicylate treatment, however, did not restore the food intake, or influence the behaviour of the chickens. These data show that sodium salicylate has a positive effect on the water intake after intravenous injection of LPS in chickens and suggests that there is a difference in mechanism of action of food and water consumption after LPS injection in chickens.     

Effects of Several Procedures of Ovarian Stimulation on Reproductive Efficiency in Artificially Inseminated Does

Veterinary Research Communications -     

内毒素及其诱导的信号转导

细菌内毒素中毒在临床上主要表现为机体发热、休克、恶质病、死亡。多种炎性细胞因子是引起上述临床表现的原因。内毒素通过与细胞膜表面相应的分子如脂多糖结合蛋白、CD14、Toll样受体相互作用，将信号跨膜传递至胞内并活化NF－κB（nuclear factor of kappa B)，从而使细胞核基因激活，产生多种炎性细胞因子。本文主要综述了近年来在内毒素诱导的信号转导方面所取得的进展。     

西安地区鸵鸟养殖现状调查

简述了国内外鸵鸟养殖概况 ,通过对西安地区 5个公司的鸵鸟养殖场中的饲养管理、繁育、疾病防治及产品开发等的调查和分析 ,提出了西安地区在鸵鸟养殖方面存在的问题及我国鸵鸟养殖业的发展对策     

Assessment of the quality of tests for the detection of antibodies to Aujeszky's disease virus glycoprotein gE in a target population by the use of receiver operating characteristic curves

The performance of tests for the detection of antibodies to Aujeszky's disease virus glycoprotein E (ge) in a target population was evaluated by constructing and analysing receiver operating characteristic (roc) curves. These curves assess the discriminating ability of a test over the entire range of test signals. The advantages of applying the analysis to a sample of the target population (all commercial pigs in the Netherlands), as compared to using a panel of test sera, are that the estimates of sensitivity and specificity, the comparisons between tests and the choices of the cut-off values are all relevant for the target population. The results of a gE-elisa in colostrum (test A) and in a single droplet of whole blood (test B) were compared with the results obtained with the same elisa in serum (gold standard). The area under the ROC curve, which is a quantitative measure of test performance, was significantly (P<0·01) smaller with test A than test B or the gold standard, indicating that test B performed better than test A. No significant difference was observed between test B and the gold standard.