小麦新品种“绵阳28”号

一、来源1974年以来，利用物种的、地理和生态的远缘多亲进行阶梯式4次杂交，集12个国内外知名品种（系）之亲缘，经15年杂交培育与选择，1989年稳定成系，代号89—311。1995年冬进入长江流域冬麦组试验，代号绵阳311。1996年经四］11省品种审定委员会审定；定名绵阳28号。二、主要特征特性弱者性、半直立。分获力较强、长势旺，株高8＼3—9ocm，全生育期1815～18邵。根系发达、茎杆坚韧抗倒力强，穗长大方正、整齐一致。落黄转色好，易人工脱粒。有效穗18’，～25万，穗粒数40～70粒，千粒重40～459，籽粒浅红色和白色。品质较好，抗病性较…     

部分家畜的血磷和血糖含量

用磷钼蓝法和邻甲苯胺法检测了青海省骡，驴，黑白花奶牛，猪，西德长毛兔的血清无机磷和血清葡萄糖含量，结果；骡为１．４９±０．２０ｍｍｏｌ／Ｌ，３．８９±０．６８ｍｏｌ／Ｌ，驴１．３９±０．２２ｍｍｏｌ／Ｌ，３．７２±０．５３ｍｍｏｌ／Ｌ，黑白花奶牛１．７１±０．４６ｍｍｏｌ／Ｌ３．５５±０．６３ｍｍｏｌ／Ｌ，猪２．３９±０．３４ｍｍｏｌ／Ｌ，４．２５±０．６５ｍｍｏｌ／Ｌ，西德长毛兔１．５６±０．４     

2002年第4季度产品质量国家监督抽查情况表明 配合饲料加工机械质量存在三大问题

2002年第4季度国家质量监督检验检疫总局对配合饲料加工机械产品质量进行了国家监督抽查。共抽查了北京、河北、上海、江苏、浙江等5个省、直辖市25家企业生产的27种产品,合格产品24种,产品抽样合格率为88.9％。     

高渗盐水的临床应用

兽医临床上应用高渗盐水作为止血药、胃肠道兴奋药,或在循环血量减少,引起血压下降和心力衰竭时使用.外用有抑菌、刺激、消肿(消炎)作用,其在临床具体应用方法介绍如下.     

Usefulness of rNcGRA7- and rNcSAG4-based ELISA tests for distinguishing primo-infection, recrudescence, and chronic bovine neosporosis

Bovine reproductive failure caused by the parasite Neospora caninum is a major problem and is responsible for severe economic losses worldwide. Currently, appropriate control measures depend on the predominant transmission route in a particular herd. Therefore, the development of diagnostic tools capable of discriminating between primo-infection, recrudescence, re-infection, and chronic infection is a major challenge in the serodiagnosis of bovine neosporosis. Here, two recombinant protein-based ELISAs utilizing the immunodominant NcGRA7 dense granule protein and the NcSAG4 bradyzoite stage-specific protein were developed and showed good diagnostic performances. Their usefulness for discerning between primo-infection, recrudescence, re-infection, and chronic infection was also studied by analyzing an appropriate panel of serum samples belonging to different groups of experimentally and naturally infected bovines. Our results suggest that anti-rNcGRA7 antibody levels may be indicative of acute infection (primo-infection, re-infection, and recrudescence), whereas the presence of anti-rNcSAG4 antibodies may be associated with chronic infection and could be a good indicator of infection establishment (tachyzoite-bradyzoite conversion). Moreover, primo-infection associated with a Neospora-associated epidemic abortion pattern is characterized by the detection of anti-rNcGRA7 antibodies together with the absence or detection of anti-rNcSAG4 antibody levels around the cut-off point. In contrast, the detection of antibody levels directed against both recombinant proteins may be quite indicative of recrudescence or re-infection associated with abortion and/or vertical transmission in herds with a Neospora-associated endemic abortion pattern. In conclusion, both serological tests developed in the present study offer additional information to conventional avidity tests and, consequently, improve the diagnosis of bovine neosporosis with perspectives for control measures.     

Enzyme-mediated solvent extraction of carotenoids from marigold flower (Tagetes erecta)

Marigold flowers are the most important source of carotenoids for application in the food industry. However, the extraction gives almost 50% losses of the carotenoids depending on conditions for silaging, drying, and solvent extraction. In the past decades, macerating enzymes have been successfully applied to improve the extraction yield of valued compounds from natural products. In this work, an alternative extraction process for carotenoids is proposed, consisting of a simultaneous enzymatic treatment and solvent extraction. The proposed process employs milled fresh flowers directly as raw material, eliminating the inefficient silage and drying operations as well as the generation of hard to deal with aqueous effluents present in traditional processes. The process developed was tested at the 80 L scale, where under optimal conditions a carotenoid recovery yield of 97% was obtained.     

鳝健康生态养殖技术探讨

1 建造鳝池。1．1 建造原则与鳝池分类 原则是模拟自然环境，合理设置鱼巢和各水口，有利于防治病虫害，防逃，易捕和便于管理。鳝池的结构按养殖方式分为有土养殖池和无土养殖池。按建池用料分为水泥池、土池、网箱和稻田。按离地面的高低分为地上型、地下型和半地下型。     

节能日光温室秋冬季双孢菇栽培技术

本文以蘑菇增温剂应用、肥料制作、追肥使用为主要内容,介绍了节能日光温室双孢菇秋冬季栽培管理技术,通过新技术的应用,去除了3～5次翻堆和后发酵,既节约生产成本,又减轻了劳动强度。通过应用维生素等进行补肥,提高了双孢菇产量。     

致富路上的好典型

在信丰县,大阿镇大阿村的朱清能几乎是个家喻户晓的人物,他的知名度之所以这么高,是因为他的名字紧紧地和农机联系在一起,一提到他,人们自然会想到农业机械化,说他是靠农机致富的典型。　　2000年 40多岁的朱清能是个大学物理系毕业的本科生。 80年代初,他还是一所中学的物理教师,可自读大学时起就立志要在红土地上有一番作为的朱清能又怎么愿局限于三尺讲台呢 ?1986年,他毅然撇下“铁饭碗”,承包起学校的农场,开始了他农机致富的征程。　　身为物理系本科毕业的朱清能深深懂得农业机械的重要性和发展前景。 1986年,他在乡农…     

A PCR technique for the detection of Jaagsiekte sheep retrovirus in the blood suitable for the screening of ovine pulmonary adenocarcinoma in field conditions

Ovine pulmonary adenocarcinoma (OPA) is a naturally occurring contagious lung neoplasia caused by jaagsiekte sheep retrovirus (JSRV). Although no specific circulating antibodies against the virus can be detected in infected sheep, JSRV proviral DNA sequences can be found in peripheral blood leukocytes (PBLs) in clinically affected and in a proportion of in contact animals. In this study, existing hemi-nested PCR procedure is compared with a new one-step PCR technique that was developed to minimise potential DNA contamination and reduce sample and reagent handling. Different blood preparations were assessed and the best results were achieved on DNA prepared from buffy coat. The sensitivity of this PCR was lower in JSRV infected sheep without lesions of OPA than in clinically affected sheep, which indicate that this PCR may not be not fully appropriate for screening of individual sheep, but rather to provide results at flock level. This PCR is the only currently available blood test for detection of JSRV infected sheep and may be useful in epidemiological studies and in control programmes of OPA.