法系獭兔血液中AKP活性与体尺、体重性状的关系   总被引：1，自引：0，他引：1  

王清吉  沈培军等 《中国养兔杂志》2001,(5):13-14

对20只40日龄法系獭兔和20只68日龄法系獭兔（公、母各半）血液中AKP活性进行了测定，并分析了40日龄与68日龄法系獭兔血液中AKP活性与体重、体长、胸围的相关性。结果表明：40日龄时法系獭兔血液中AKP活性高于68日龄；日龄相同时，公兔活性显著高于母兔（P＜0.05）；40日龄AKP活性与体重有较为密切的关系，其他相关则不显著。  相似文献   

家兔脾俞穴和肝俞穴的神经支配   总被引：2，自引：2，他引：0  

任晓玲  赵慧英  逄国梁  陈树林 《动物医学进展》2003,24(2):76-77

用辣根过氧化物酶(HRP)法研究了家兔脾俞穴和肝俞穴的神经支配。结果表明,脾俞穴的标记细胞出现于T6-L1背根节、椎旁节和脊髓腹角,高峰节段为T8-T11;肝俞穴的标记细胞出现于T5-T12背根节、椎旁节和脊髓腹角,高峰节段为T7-T10;而相应非穴区的标记细胞仅分别出现于T7-T10和T8-T11节段,且数目明显少于穴区侧。表明穴区是神经末梢相对集中的部位,受初级传入、交感节后和躯体运动三种纤维成分的支配,且支配范围广泛,具有"既分散又集中"的分布模式。  相似文献   

The influence of seawater on lipid peroxidation of the muscle tissue wounded by firearm in rabbit limbs     

CHEN Lei  LAI Xi-nan  CHEN Zhi-qiang  ZHANG Liang-chao 《园艺学报》2001,17(6):556-558

AIM: The influence of the seawater on the lipid peroxidation of the muscle tissue wounded by firearm was studied. METHODS: Both two limbs of rabbits were wounded by the steel ball of 250 mg. The wounded rabbits were divided into two group: One is seawater immersed group (SIG), which was dipped in artificial seawater for 30 min. Another is the single wounded group (SWG), which wasn't dipped in seawater. Then, muscle tissues 0.5 cm (A area), 1.5 cm (B area) and 2.5 cm (C area) from wound edge were cut for biochemical analysis at 3, 6, 12, 24 h of post-wound, respectively. The contents of ATP, MDA and SOD activity of all these tissues were detected, pre-wounded muscle tissues were used as control group. RESULTS: The content of MDA in SIG increased obviously at 3, 6 h, respectively, but it decreased slightly at 12 h and increased again at 24 h. The change in MDA in SWG is similar to that in SIG but more slightly. The changes in both the activity of SOD and the content of ATP in two groups is similar to that of MDA. CONCLUSION: Seawater induced more serious lipid peroxidation in the muscle tissue wounded by firearm.  相似文献   

受体阻断剂改善家兔急性脑缺血的研究     

孙艳  孙镇平  褚云飞  孙崇莉 《扬州大学学报(农业与生命科学版)》1994,(3)

利用家兔制备急件不完全世脑缺血模型，选择Ｒｅｇｉｔｉｎｅ作为α－子体阻断剂，通过静脉给药，旨在探寻临床急性脑缺血状态下改善脑血流量的救治方法。结果表明，静注Ｒｅｇｉｔｉｎｅ后，可使脑血管迅速舒张，脑血流量有效增加，平均动脉压可稳定在一定水平，心电图ＳＴ段和心率无显著改变。  相似文献   

ARTERIOGRAPHIC ANATOMY OF THE ABDOMINAL AORTA IN THE GOAT, DOG, PIG, AND RABBIT     

Ambika P.  Singh  MVSc  PhD  Gaj Raj  Singh  MVSc  Dwarika N.  Sharma  MVSc  PhD  Janki M.  Nigam  MVSc  PhD  Amar K.  Bhargava  MS  PhD 《Veterinary radiology & ultrasound》1982,23(6):279-281

Arteriographic anatomy of the major branches of the abdominal aorta of rabbits, dogs, pigs, and goats was investigated. The origin and location of the celiac, cranial mesenteric, right renal, left renal, caudal mesenteric, and external iliac arteries were demonstrated, and their placement was described in relation to the iliac bifurcation and lumbar vertebral bodies.  相似文献   

The mode of action and neurotoxicity of mirex,chlordecone, and four hydrogenated mirex analogs     

J.R. Bloomquist  D.L. Shankland 《Pesticide biochemistry and physiology》1983,19(3):235-242

The toxicity and neurological effects of mirex, chlordecone, and four hydrogenated mirex analogs were evaluated on the American cockroach. The severity of poisoning symptoms correlated with the ability of each compound to increase spontaneous activity and prolong synaptic afterdischarge in ganglia of the ventral nerve cord. Afterdischarge across the metathoracic ganglion was consistent with a characteristic wing splaying symptom in mirex-poisoned cockroaches. The actions of hemicholinium-3 and nicotine on nerve cords from mirex-poisoned cockroaches are described and are consistent with a hypothesis that the increased spontaneous activity and afterdischarge are the result of enhanced transmitter release in ganglia of poisoned animals.  相似文献   

A method for the use of landscape metrics in freshwater research and management   总被引：9，自引：0，他引：9  

Faith R.?KearnsEmail author  N. Maggi?Kelly  James L.?Carter  Vincent H.?Resh 《Landscape Ecology》2005,20(1):113-125

Freshwater research and management efforts could be greatly enhanced by a better understanding of the relationship between landscape-scale factors and water quality indicators. This is particularly true in urban areas, where land transformation impacts stream systems at a variety of scales. Despite advances in landscape quantification methods, several studies attempting to elucidate the relationship between land use/land cover (LULC) and water quality have resulted in mixed conclusions. However, these studies have largely relied on compositional landscape metrics. For urban and urbanizing watersheds in particular, the use of metrics that capture spatial pattern may further aid in distinguishing the effects of various urban growth patterns, as well as exploring the interplay between environmental and socioeconomic variables. However, to be truly useful for freshwater applications, pattern metrics must be optimized based on characteristic watershed properties and common water quality point sampling methods. Using a freely available LULC data set for the Santa Clara Basin, California, USA, we quantified landscape composition and configuration for subwatershed areas upstream of individual sampling sites, reducing the number of metrics based on: (1) sensitivity to changes in extent and (2) redundancy, as determined by a multivariate factor analysis. The first two factors, interpreted as (1) patch density and distribution and (2) patch shape and landscape subdivision, explained approximately 85% of the variation in the data set, and are highly reflective of the heterogeneous urban development pattern found in the study area. Although offering slightly less explanatory power, compositional metrics can provide important contextual information.  相似文献   

利用转角蛋白基因改良棉纤维品质的研究     

赵丽芬  赵国忠等 《勤云标准版测试》2005,(7)

通过花粉管通道法,将兔毛角蛋白基因导入到SGK321双价抗虫棉中进行纤维品质的改良,对转化后代进行GUS基因及PCR检测,并经过3a的南繁北育,确定有3个阳性株系的棉纤维品质得到改良,长度当年较对照增加3.3mm,虽然年度间有一定的波动性,但后代继续保持长纤维特性,比强度当年增高的最多达6.0cN/tex,在后代的选择中,增高幅度在下降,到第三年的6世代,只比对照SGK321高2.1cN/tex。  相似文献   

Reduced Milk Production in Udder Quarters with Subclinical Mastitis and Associated Economic Losses in Crossbred Dairy Cows in Ethiopia   总被引：2，自引：1，他引：1  

Mungube EO  Tenhagen BA  Regassa F  Kyule MN  Shiferaw Y  Kassa T  Baumann MP 《Tropical animal health and production》2005,37(6):503-512

The objective of the study was to estimate the losses associated with subclinical mastitis (SCM) in crossbred dairy cows in the Central Highlands of Ethiopia. A split udder investigation was performed with 30 cows to determine production losses associated with SCM. Each quarter of the study cows was examined using the California Mastitis Test (CMT) and quarter milk production was measured over a period of 8 days. Production losses were determined for different CMT scores by comparing production of quarters with CMT score 0 to quarters with CMT scores trace, 1, 2 and 3, respectively. Using data from a recently published study, economic losses were determined for different farm sizes and production subsystems by multiplying the prevalence of the respective CMT scores with the production losses associated with these CMT scores. Mean quarter milk production was 0.82 + 0.40 kg per milking in the split udder trial. Milk production was reduced by 1.2%, 6.3%, and 33% in quarters with CMT scores 1+, 2+, and 3+, respectively. Using data from the published study, a quarter with SCM lost an average of 17.2% of its milk production. Production losses associated with SCM were estimated at 5.6% for the Addis Ababa Milk Shed. Stratified losses were highest (9.3%) in urban dairy farms (UDF) and small-scale farms (6.3%). The estimates of the financial losses ranged from US$29.1 in dairy herds in secondary towns (DHIST) to US$66.6 in UDF. A total loss of US$38 was estimated for each cow per lactation. Reducing mastitis in UDF (highest prevalence) to the level of DHIST (lowest prevalence) could reduce the loss by US$35. As this does not include costs associated with treatment or culling of diseased cows, this figure probably underestimates the possible benefits of control measures.  相似文献   

Experimental use of polyamide bands in combination with intramedullary pinning for repair of oblique femoral fractures in rabbits     

Carrillo JM  Sopena JJ  Rubio M  Redondo JI  Serra I  Soler C 《Veterinary surgery : VS》2005,34(4):387-392

OBJECTIVE: To evaluate the use of polyamide bands, manufactured for securing electrical cables, for repair of oblique femoral fractures in rabbits. STUDY DESIGN: Experimental study. ANIMALS: Twelve nulliparous, 21-25-week-old, California female rabbits. METHODS: Rabbits were divided into 3 groups (n=4) and studied for 14, 28, or 56 days. A Z-shaped mid-diaphyseal femoral osteotomy was repaired with a 2.5 mm intramedullary pin and a polyamide 6.6 cerclage band. Healing was evaluated at intervals by physical examination, limb use, femoral radiographs, and callus histology. RESULTS: Rabbits had early limb use with good wound healing. From the 1st day, movement of the hip and stifle joints was satisfactory. Radiographically, fractures were healed at 28 days. Histologically, there was no foreign body reaction and bone healing was normal. CONCLUSION: Nylon cerclage band application was accomplished easily, maintained reduction, and resulted in good healing and limb use. CLINICAL RELEVANCE: Sterilized nylon bands, manufactured for electrical use, can be used for cerclage in rabbits.  相似文献