Haemoperitoneum in horses: a retrospective review of 54 cases

This retrospective study was conducted in the UK and identifies the most frequent causes, diagnoses, treatment and prognoses for short- and long-term survival in 54 cases of horses with haemoperitoneum. Clinical signs of haemorrhagic shock and colic were common, and abdominal ultrasound was very useful for the identification of haemoperitoneum. Causes of haemoperitoneum included uterine injury (22 per cent), involvement of specific blood vessels (20 per cent), splenic injury (19 per cent), neoplasia (13 per cent) and other (4 per cent). No source was identified in 22 per cent of cases. Fifty-seven per cent of cases underwent exploratory laparotomy. Of the surgical cases, a diagnosis was made in 65 per cent, with 42 per cent surviving to discharge. It was felt that exploratory laparotomy had both diagnostic and therapeutic implications. Twenty-eight per cent of cases died, and 33 per cent were euthanased, whereas 39 per cent survived to be discharged from the hospital, with 35 per cent of these surviving in the long term. Idiopathic haemoperitoneum was associated with the best outcome for long-term survival.     

牧区草地承包经营权流转及其对牧民生计的影响——以内蒙古草原牧区为例

牧区草地承包经营权流转,是伴随草原新三牧政策(休牧、禁牧、划区轮牧)实施、畜牧业增长方式转型、牧区产业结构调整、牧区剩余劳动力转移等过程集中出现,又事关牧区民生与构建和谐新牧区的一个崭新的重要研究命题。本研究阐明内蒙古牧区草地承包经营权流转现状与特征,指出伴随草地流转出现租赁期短、草畜平衡对草地流转限制等问题以及牧区草地流转动因与东中部土地流转不同、草地类型流转程度不同的特征。畜产品是牧民主要收入来源,草地流转价格低影响牧民增收、加大牧区剩余劳动力转移风险。在牧区调研的基础上,提出建立与完善草地承包经营权流转机制的政策建议。     

Antimicrobial resistance changes in enteric Escherichia coli of horses during hospitalisation: Resistance profiling of isolates

The aim of this study was to determine whether hospitalisation of horses leads to increased antimicrobial resistance in equine faecal Escherichia coli isolates. E. coli were cultured from faecal samples of horses on admission and after 7 days of hospitalisation; antimicrobial susceptibility was determined for eight antimicrobial agents. Resistance profiles of E. coli isolates were grouped into clusters, which were analysed to determine resistance patterns. Resistance to 7/8 antimicrobial agents and multi-drug resistance (MDR; resistance to ?3 antimicrobial classes) were significantly higher after 7 days of hospitalisation. Forty-eight resistance profiles were identified; 15/48 were present on day 0 only, 16/48 on day 7 only and 17/48 at both times of sampling. There was a significant association between day 7 profiles and resistance detected to an increased number of antimicrobial agents. Hospitalisation of horses for 7 days resulted in alterations in equine faecal E. coli antimicrobial resistance profiles.     

Inheritance of an Abnormal Haemoglobin Haplotype in Horses and its Possible Influence on Blood Values

In a breeding experiment a stallion of the native Norwegian Trotter breed with an abnormal Hb haplotype (N) and with the Hb type BI/N, sired 6 offspring. The abnormal haplotype controls one α-chain only, having lysine at position 60 and phenylalanine at position 24. Three of the offspring received the N haplotype from the sire and the BII haplotype from the dam, whereas the other 3 offspring received BI from the sire. The BII/N horses have two Hb components after alkaline electrophoresis or isoelectric focusing with the ratio between the fast and the slow band (anodal, cathodal) being approximately 30:70. Blood value determinations did not give any definite conclusions as regards differences between horses with the abnormal Hb type and normal horses of similar age within the same breed.Key words: mutant Hb haplotype, horses, inheritance, influence on blood values, normal blood values, Norwegian Trotter, Standard bred, stallions     

观赏竹在昆明市园林绿化应用中存在的问题及对策措施

通过对昆明市观赏竹种应用现状的调查,在了解不同竹种的生态习性和生物学特性基础上,分析现阶段观赏竹在昆明城市园林绿化应用中所存在的问题;并根据园林建设的需要提出了改进措施,以期为提高昆明市的观赏竹应用水平提供一定的实践及理论指导。     

不同啃食强度对白沙蒿影响的初步研究

根据飞播区牲畜对白沙啃食程度的不同，采用人工模拟放牧方法对牲畜啃食的嫩枝及绿色部分设置了１０％、３０％、５０％、７０％、９０％、对照６种不同啃食强度的处理，探讨啃食强度对白沙蒿生长的影响。试验结果表明，白沙蒿放牧利用强度控制在３０％以下，有利于白沙蒿的生长，否则会影响其正常生长。     

Gas-liquid chromatographic determination of selenium in biological materials, using 4-bromo- and 4-chloro 1,2-diaminobenzene as derivatizing reagents

A method is described for the gas-liquid chromatographic determination of traces of selenium in marine biological materials. The method is based on the reaction of Se(IV) with bromo- and chloro-substituted 1,2-diaminobenzenes. The benzoselenadiazoles so formed are sensitive to electron capture detection. The sample is digested in a nitric-perchloric acid mixture and selenium is reduced to the IV oxidation state. Different aliquots of the digest solution are reacted with either 4-bromo- or 4-chloro-1,2-diaminobenzene to quantitatively form the corresponding 2,1,3-benzoselenadiazole. Recovery of added selenite to a fish meal sample was 95% for the bromo derivative and 101% for the chloro derivative. Different portions of a well mixed fish meal sample were analyzed in independent laboratories by the fluorometric method and by atomic absorption spectrophotometry (hydride generation). The following mean values (microgram/g) were found: present method 1.89, fluorometric method 1.91, atomic absorption method 2.1. The lower limit of detection for the method described was 13 ng, using the bromo derivative, and 27 ng, using the chloro derivative.     

The estimation of residue levels of promacyl and its metabolites in beef tissue and fat by high-performance liquid chromatography with electrochemical detection

A method is described for the estimation of residues of the carbamate insecticide promacyl [5-methyl-m-cumenyl butyryl(methyl)carbamate] and its metabolites that are hydrolysable to isothymol (m-cymen-5-ol), using high-performance liquid chromatography with electrochemical detection to determine the isothymol. Clean-up of samples relied on the steam volatility of phenols. Recoveries at the 0.1 mg kg^?1 level varied from 72–88% for fat tissue and 81–91% for liver. The limits of detection were found to be 0.01 mg kg^?1 for and 0.02 mg kg^?1 for liver. A comparative study of the chromatography of sample extracts using both ultraviolet detection and electrochemical detection showed a substantial decrease in the level of interfering co-eluates in the latter method. A field trial, involving a single spray application of the formulated acaricide on milking cattle, revealed residues in the butter fat comparable with those found in a previous investigation.