青海白唇鹿公鹿血钾指标和红细胞钾型的研究     

张才骏  卢福山  拉环 《青海畜牧兽医杂志》2006,36(5):3-4

采用火焰光度法对青海省大通种牛场18头白唇鹿公鹿三项血钾指标和红细胞钾型进行了研究。结果发现:①被检青海白唇鹿公鹿的血清钾离子浓度为3.7±0.8mmol/L,全血钾离子浓度为27.4±3.0mmol/L,红细胞钾离子浓度为75.4±10.1mmol/L;②按红细胞钾离子浓度判定,全部被检青海白唇鹿公鹿的红细胞钾型为高血钾型。  相似文献   

我国茸鹿杂交试验研究工作的成就及思考   总被引：10，自引：7，他引：3  

郑兴涛  邴国良 《经济动物学报》1998,2(4):55-60

我国养鹿业近４０年开展了１２种茸鹿的种间和亚种间的８种杂交（系）、２８种组合方式的试验。选育出高产、优质、低耗的茸鹿新品种（系）,对开辟茸鹿杂交育种研究的新领域具有重大的现实意义。  相似文献   

梅花鹿剖腹产诊治研究   总被引：2，自引：0，他引：2  

田来明  杜锐 《经济动物学报》1998,2(2):32-33

本文是笔者在近年养鹿实践中 ,对梅花鹿剖腹产进行了诊治研究的总结。较详尽地阐述了梅花鹿剖腹产的适应症、剖腹产的手术方法和术后护理等问题。通过 1 5例难产手术证明 ,仔鹿成活率达 80 % ,母鹿成活率达 1 0 0 %。  相似文献   

Establishment and growth of coniferous seedlings in an altered forest floor after long-term exclusion of deer     

Shalini Kumar  Ei’ichi Shibata 《Journal of Forest Research》2007,12(4):306-311

We evaluated differences between the forest floors and the establishment and growth of coniferous seedlings in fenced (13 years) and unfenced plots on Mt Ohdaigahara where the sika deer (Cervus nippon) population density is high. Large coniferous seedlings (height > 0.05 m) were less abundant in the unfenced plot, as a result of deer browsing. Small coniferous seedlings (height < 0.05 m), however, were more abundant in the unfenced plot, where most seedlings of Abies homolepis were found on bare ground and those of Picea jezoensis var. hondoensis were found on buttresses and fallen logs. The large area of bare ground in the unfenced plot was caused by deer browsing. Deer therefore have an indirect effect on the emergence and growth of small coniferous seedlings by modifying the forest floor.  相似文献   

Growth change of young Picea sitchensis in response to deer browsing     

Bruno Vila  Franck Torre  Frdric Guibal  Jean-Louis Martin 《Forest Ecology and Management》2003,180(1-3):413-424

Taking advantage of the introduction of the black-tailed deer to the Queen Charlotte Islands (British Columbia, Canada), we used dendrochronological analyses to understand the consequences of deer browsing on Sitka spruce growth. We compared shape, radial growth, height growth and age of young spruce in three sites. We identified two types of trees growing side by side: (1) stunted and heavily browsed spruce, smaller than the browsing limit and (2) escaped spruce that were taller than the browsing limit but still browsed in their lower part. The compact and heavily ramified shape in stunted spruce was the result of repeated and intense browsing. In escaped spruce this was also the case below the browsing limit (1.16 m±0.07 m), in sharp contrast with the normal shape that escaped spruce resumed above the browsing limit. We show that the release of browsing pressure, once the tree reaches the browsing limit, is characterised by an abrupt increase in radial growth. Before release, trees show a growth stagnation characterized by narrow rings (0.5 mm per year) and small annual height increments (<5 cm per year). After release, trees show a growth stabilisation characterised by wider rings (3 mm per year) and larger annual height increments (20 cm per year). We use this pattern to estimate frequency and age at release and their possible variation over time. Age differences between stunted and escaped spruce are highly significant and indicate that, despite of browsing, most if not all trees will ultimately reach the browsing limit and escape. Heavy deer pressure (30 deer per km²) delays spruce sapling recruitment by about 8 years. This delay varies in relation to site quality and seems to have increased over time, suggesting an increase in browsing pressure.  相似文献   

不同填充料对鹿粪好氧堆肥效果的影响     

桑磊  邓欢  赵晓松 《安徽农业科学》2014,(33):11691-11693,11714

[目的]为了研究玉米秸秆、玉米芯、稻壳3种填充料对鹿粪好氧堆肥效果的影响.[方法]采用仓式堆肥反应器,以鹿粪为底料,测定不同填充料堆体中温度、含水率、好氧速率、C/N比等指标随时间变化的动态过程.[结果]3种物料均可作为鹿粪堆肥的填充料,达到无害化的要求.[结论]当采用大粒径,具有疏松的多孔性结构的玉米芯同鹿粪堆肥,便于通风供氧,堆体升温和降温速度较快,高温持续时间较长,含水率下降迅速,堆体物料腐熟速度快,有利于推动堆肥进程加速进行.  相似文献   

Linking a cougar decline, trophic cascade, and catastrophic regime shift in Zion National Park     

William J. Ripple  Robert L. Beschta 《Biological conservation》2006,133(4):397-408

The strength of top-down forces in terrestrial food webs is highly debated as there are few examples illustrating the role of large mammalian carnivores in structuring biotic and abiotic systems. Based on the results of this study we hypothesize that an increase in human visitation within Zion Canyon of Zion National Park ultimately resulted in a catastrophic regime shift through pathways involving trophic cascades and abiotic environmental changes. Increases in human visitors in Zion Canyon apparently reduced cougar (Puma concolor) densities, which subsequently led to higher mule deer (Odocoileus hemionus) densities, higher browsing intensities and reduced recruitment of riparian cottonwood trees (Populus fremontii), increased bank erosion, and reductions in both terrestrial and aquatic species abundance. These results may have broad implications with regard to our understanding of alternative ecosystem states where large carnivores have been removed or are being recovered.  相似文献   

复方生茸散的生茸机理与生茸效果的实验研究   总被引：3，自引：0，他引：3  

贾忠山  关天颖 《吉林农业大学学报》1994,16(3):78-83

复方生茸散是以中药为主组成的复方药物添加剂，该制剂具有促进食欲，增强造血功能，促进骨髓ＤＮＡ和ＲＮＡ的合成，改善末梢血液循环，增加末梢血液供给，调节局部代谢，改善营养，提高机体免疫功能的作用。应用于梅花鹿的生茸期，按３０ｇ／ｄ的剂量将复方生茸散混于精料中喂给，每天１次，连用６０－７５ｄ，平均每头鹿多增鲜茸３０９－５６０ｇ，增茸效果显著。  相似文献   

新西兰的养鹿生产与国际贸易现状     

李和平  崔凯 《特产研究》2006,28(4):62-65

对新西兰养鹿生产及其鹿肉、鹿茸等鹿产品国际贸易现状进行了概述。  相似文献   

鹿布氏杆菌病流行病学调查     

闫喜军  柴秀丽  姜莉莉  田洪宇  邵西群  王凤雪  王晓锋 《特产研究》2007,29(1):5-6

对我国部分省区鹿布氏杆菌病进行流行病学调查表明,我国鹿场饲养的梅花鹿、马鹿群中普遍存在鹿布氏杆菌病,母鹿阳性率明显高于公鹿,梅花鹿阳性率分别为10.06%、4.77%;马鹿阳性率分别为4.90%、11.15%。  相似文献