丝兰提取物的作用机理及其在家禽上的应用研究进展

对丝兰提取物的主要活性成分、作用机理及其在家禽上应用的研究进展进行了综述,旨在为其作为家禽饲料添加剂的应用与推广奠定理论基础。     

抗鸡新城病毒高免卵黄IgG的研制与应用

本文报导了抗鸡新城病毒高免卵黄IgG的研制方法:选用健康母鸡数只,用新城Ⅰ系经基础免疫、强化免疫和超强化免疫后获得高效价的鸡蛋,从卵黄中粗提卵黄IgG,进一步纯化。卵黄IgG对人工发病的鸡新城疫和自然发病的鸡进行治疗,收到了显著的疗效,治愈率为77—91.2％,在治疗家禽病毒性传染病方面提供了一种新的生物制剂。特异性卵黄IgG来源广泛,制备简单,成本低廉,给治疗家禽病毒性传染病开辟了广阔的前景。     

中国农村兽医服务下的农户畜禽互助保险分析

新中国农村长期存在一种兽医与农户之间的协议：农户交纳一定费用,在约定的时段内由兽医对农户饲养畜禽免费或部分免费防疫,治病,并对病死畜禽给予若干补偿。这种现象持续了半个世纪,并形成几个高潮。本文对此进行分析,认为这是一种符合中国国情的农民互助型保险。     

中草药在家禽养殖业中的应用

以中草药为主要成分制成的饲料添加剂统称为中草药饲料添加剂。中草药饲料添加剂克服了化学饲料添加剂带来的负面影响,具有促进畜禽生长和保健作用,并因其无毒、无害、无残留、无耐药性的独特优势愈来愈被我国畜牧兽医工作者重视。中草药这一古老的瑰宝,在现代家禽养殖业中发挥着越来越重要的作用。     

研究性教学在高校专业课程中的实践与效果

以《养禽学》课程为例,对黑龙江八一农垦大学专业课程的研究性教学改革措施和效果进行总结,以期为其他专业课程的教学改革提供参考。     

Long-term effects of poultry litter and conservation tillage on crop yields and soil phosphorus in cotton–cotton–corn rotation

Long-term field experiments are needed to fully realize positive and negative impacts of conservation tillage and poultry litter application. A study was initiated on a Decatur silt loam soil at the Tennessee Valley Research and Extension Center, Belle Mina, AL, USA in 1996 to evaluate cotton (Gossypium hirsutum L.) performance with long-term poultry litter (PL) application under different tillages and to study the build up of phosphorus (P) with application of PL. Treatments include incomplete factorial combinations of three tillage systems [conventional till (CT), mulch till (MT), and no-till (NT)], two cropping systems [cotton-fallow and cotton-winter rye (Secale cereale L.)], and two nitrogen sources and rates [100 kg N ha⁻¹ from ammonium nitrate (AN), and 100 and 200 kg N ha⁻¹ from poultry litter (PL)]. Cotton was rotated with corn (Zea mays L.) every third year. Results from 2003 to 2008 showed that all tillages gave similar cotton lint yields with AN at 100 kg N ha⁻¹. Application of PL at 100 kg N ha⁻¹ in NT plots resulted in 12 and 11% yield reductions compared to that of CT and MT, respectively. However, NT plots with higher quantity of PL (200 kg N ha⁻¹) gave similar yields to CT and MT at 100 kg N ha⁻¹. During corn years, higher residual fertility of PL, in terms of grain yields, was observed in NT plots compared to CT and MT. Long-term PL application (100 kg N ha⁻¹ year⁻¹) helped to maintain original soil pH in CT and MT while AN application decreased soil pH. In NT plots, PL at 100 kg N ha⁻¹ was not sufficient to maintain original soil pH, but 200 kg N ha⁻¹ maintained original pH. Although not-significant, elevated P levels were observed in all tillages compared to original P levels which indicates possibility of P build up in future with further application of PL. Application of PL at double rate (200 kg N ha⁻¹) in NT plots resulted in significant build up of P. Results indicate that NT gives similar yields to CT when received AN, but needs higher rate of PL application to achieve similar yields to CT.     

海口地区高密度叠层笼养蛋鸡舍内热湿环境的实验研究

针对高密度蛋鸡叠层笼养工艺在海口地区的实际应用，从环境工程角度对舍内温度、湿度等诸多环境因子进行了实验研究。发现舍内环境状况良好，基本满足生产需要，为进一步在全国大中城市推广该工艺提供了宝贵经验。     

鸡与鹌鹑属间杂交种生物学特性的观察

通过人工授精技术获得了鸡与鹌鹑属间杂种，并时它们的各种体态特征、发育规律、习性等进行了综合观祭分析。结果表明：杂交种在羽色上大多为白羽和红褐羽或黑褐色羽和黑白色羽，有别于其父母本；在生长速度上远高于鹌鹑，具有明显的超亲优势；在生活习性上，既有父本的一些习性，也有母本的一些习性，还有不同于其父母本的特性；另外通过解剖观察，所有杂交种都为雄性，且生殖器官没有发育。     

畜禽微量元素营养与疾病的研究 Ⅰ.湖南省猪肝中七种微量元素的含量

1986～1988年,在湖南省有代表性的20个县(市)的屠宰场,采集了健康成年猪肝样品1040份,分析测定了Cu,Fe,Mn,Zn,Se,Co和Mo元素的含量。结果表明,上述7种微量元素的平均含量(干重)分别为:Cu13.59±2.45PPm;Fe1122.97±153.97ppm;Mn8.93±2.36ppm;Zn168.75±45.37ppm.Se0.62±0.57ppm;Co0.24±0.09ppm;Mo2.35±0.40ppm;除Fe以外,其余6种元素的平均含量各地区之间的差再均达极显著水平(p<0.01)。