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1.
青海半细毛羊血红蛋白多态性的研究   总被引：2，自引：0，他引：2  
采用聚丙烯酰胺凝胶电泳法对海北州海晏县９１只青海半细毛羊的血样进行了血红蛋白多态性的研究。结果发现：海晏县青海半细毛羊的血红蛋白基因座上有ＨＢＡＡ,ＨＢＡＢ,ＨＢＢＢ三种基因型。ＨＢＡ和ＨＢＢ等位基因频率分别为０．３７９１和０．６２０９,基因杂合度为０．４７０８。  相似文献   

2.
青海半细毛羊血红蛋白多态性的研究   总被引：2，自引：0，他引：2  
采用聚内烯酰胺凝胶电泳对海北州海晏县９１只青海半细毛羊的血样进行了血红蛋白多态性的研究。结果表明：海晏县青海半细毛羊的血红蛋白有ＨＢＡＡ、ＨＢＡＢ、ＨＢＢＢ３种基因型．ＨＢ＾Ａ和ＨＢ＾Ｂ等位基因频率分别为０．３７９１和０．６２０９,基因事度为０．４７０８。  相似文献   

3.
青海细毛羊生化遗传多态性的研究   总被引：7，自引：0，他引：7  
采用聚丙烯酰胺凝胶电泳和火焰光度法对５０９只青海细毛羊细血液和乳汁中ＨＢ，ＥＰ－１，ＥＰ－２，ＫＥ，ＴＦ，ＡＭＹ１，ＡＭＹ２，ＥＳ，ＡＬＰ，ＲＢＣ－ＬＤＨ，Ｈｐα－ＬＡ和β－ＬＧ总共１３个位点的多态性进行了研究。结果为：（１）在青海细毛羊的ＨＢ，ＫＥ，ＴＦ，ＡＭＹ２，ＥＳ，ＡＬＰ，ＲＢＣ－ＬＤＨ１，Ｈｐ，β－ＬＧ总共９个位点上发现多态性，多态性位点的比例为６９．２３％；（２）每个位点实有的平均等位  相似文献   

4.
通过对柴达木黄牛和青海东部黄牛ＨＢ,ＫＥ,ＴＦ,ＰＴＦ,ＰＡ,ＡＭＹ１,ＡＬＰＡ,ＡＬＰＢ,ＲＢＣ－ＬＤＨ１,Ｓ－ＬＤＨ１,α－ＬＡ,β－ＬＧ,αｓ１－ＣＮ和β－ＣＮ１４个生化遗传基因座多态性的分的,研究青海本地黄牛的遗传变异性及两个群体间的基因分化。结果发现：（１）青海本地黄牛１４个生化遗传基因座的Ｐｐｏｌｙ为８５．７％,Ｈ为０．２６６２,Ｎｅ为１．４８６１个,Ｈ．Ｉ．为０．５７９８;（２）柴达木黄牛与青海东部黄牛两群体之间的遗传距离为０．００５８,基因分化系数为０．００７１,表明青海本地黄牛两群体间的基因分化程度极小。  相似文献   

5.
夏洛来杂种羊及其亲本的血红蛋白遗传多态性   总被引：2，自引：0，他引：2  
采用聚丙烯酰胺凝胶电泳对夏洛来杂种羊及其亲本的血红蛋白多态性进行了遗传检测。结果表明：参试羊表现出ＨＢＡＡ，ＨＢＢＢ和ＨＢＡＢ三种基因型，各群体均以杂合子ＨＢＡＢ为优势基因型，ＨＢ＾Ｂ为优势基因，ＨＢ＾Ｂ频率在０．５１５２￣０．６４２８之间，没有发现ＨＢ＾Ｃ基因；群体基因频率分析和亲子配对资料的遗传分析均证实，绵羊ＨＢ受常染色体位点上两个共显性等位基因的控制，各羊群ＨＢ基因的杂合度在０．５左右。  相似文献   

6.
采用聚丙烯酰胺凝胶电泳法对７１头互助白牦牛４种血液蛋白质的多态性进行研究。结果表明：（１）血红蛋白显著ＨＢＦ＾＋Ｓ＾－，ＨＢ ＦＳ和ＨＢＦ＾－＾Ｓ＋三种表型，其表型频率分别为４．３％，９４．３％和１．４％；（２）血清白蛋白、血清运铁蛋白和血清亲血色蛋白均呈单态，显现单一的ＡＬＢＡＡ，ＴＦＤＤ和Ｈｐｌ－１型；（３）互助白牦牛４种血液蛋白质的Ｐｐｏｌｙ为２５．０％，Ｈ为０．０２７３。  相似文献   

7.
夏洛来种公羊和夏×藏一代羊血红蛋白多态性的研究   总被引：1，自引：0，他引：1  
采用聚丙烯酰胺凝胶电泳法对４只夏洛来纯种公羊和９２只杂种羊的血红蛋白（ＨＢ）多态性进行了研究。结果表明：它们的血红蛋白基因座上都有ＨＢＡＡ，ＨＢＢＢ和ＨＢＡＢ三种基因型。杂种一代羊以杂合子ＨＢＡＢ为优势型（５７．６１％），ＨＢＢ为优势基因（０．６５７６），ＨＢ基因座的杂合度０．４５０３。种公羊ＨＢＡ和ＨＢＢ等位基因频率均为０．５。  相似文献   

8.
荒漠猫血液蛋白质和酶多态性的研究   总被引：1，自引：0，他引：1  
采用聚丙烯酰胺凝胶电泳法对５只荒漠猫（Ｆｅｌｉｓｂｉｅｔｉ）血液中的血红蛋白（ＨＢ），运铁蛋白（ＴＦ），亲血色蛋白（Ｈｐ）以及乳酸脱氢酶（ＬＤＨ），淀粉酶（ＡＭＹ），酯酶（ＥＳ）和碱性磷酸酶（ＡＬＰ）的多态性进行了研究。结果发现，被检荒漠猫的ＴＦ，Ｈｐ，ＲＢＣ－ＬＤＨ，Ｓ－ＥＳ和Ｓ－ＡＬＰ共５个基因座存在多态性，ＨＢ，ＲＢＣ－ＡＭＹ，Ｓ－ＡＭＹ，Ｓ－ＬＤＨ，ＲＢＣ－ＥＳ和ＲＢＣ－ＡＬＰ共６个基因座为单态，表明荒漠猫的血液蛋白质和酶具有颇大的遗传变异性  相似文献   

9.
姜曲海猪FSHβ—亚基基因PCR—SSCP分析   总被引：6，自引：0，他引：6  
用ＰＣＦ－ＳＳＣＰ方法对１５２头姜曲海猪的ＦＳＨβ－亚基基因进行了分型。结果表明：ＦＳＨβ－亚基基因在姜曲海猪中有ＡＡ、ＡＢ、ＢＢ三种基因型,其频率分别为０．２８９、０．４９３和０．２１７;Ａ基因频率为０．５３６,Ｂ基因频率为０．４６４。Ａ、Ｂ基因频率方差及两基因频率协方差分别为０．００１、０．００１和－０．００１。Ａ基因频率的本估计值的９５％,置信区间为〖０．４７３,０．５９９〗,Ｂ基因频率对应  相似文献   

10.
青海细毛羊红细胞乳酸脱氢酶同工酶的研究   总被引：2，自引：0，他引：2  
采用聚丙烯酰胺凝胶电泳法对１１０只青海细毛羊的红细胞乳酸脱氢酶（ＲＢＣ－ＬＤＨ）同工酶酶谱及其多态性进行了研究。结果发现：青海细毛羊ＲＢＣ－ＬＤＨ同工酶总共有１２条区带；第１条区带“１－Ａ”的电泳迁移率为５５．５％，第１２条区带“１１”的电泳迁移率为９５．０％；ＲＢＣ－ＬＤＨ有两种电泳表型，１０８只羊为Ｉ型，占９８．２％，２只羊为Ⅱ型，占１．８％；ＲＢＣ－ＬＤＨ１型尚可区分为两个亚型：Ｉ－ＢＢ型和  相似文献   

11.
试验选用96头平均体重14.82 kg左右的杜×长×大断奶仔猪,随机分成4组,每组3栏,每栏8头(公母各半)。对照组饲喂基础日粮,试验1、2、3组分别添加1%80目白术、0.2%白术多糖和1%微米白术。试验期30 d。结果表明:在生长性能方面,与对照组相比,1%微米白术添加组可显著提高日增重(P0.05)、降低饲料增重比和腹泻率,而且效果优于1%80目白术组和0.2%白术多糖组,在肠道形态和肠道微生态区系方面,与对照组相比,日粮添加1%80目白术、0.2%白术多糖、1%微米白术均可不同程度的提高十二指肠和空肠的绒毛高度,加深十二指肠和空肠的隐窝深度,并且增加肠道微生态区系的多样性,其中以1%微米白术添加组的效果最佳。  相似文献   

12.
Sissay, M.M., Uggla, A. and Waller, P.J., XXXX. Prevalence and seasonal incidence of nematode parasites and fluke infections of sheep and goats in eastern Ethiopia. Tropical Animal Health and Production, XXXX. A 2-year abattoir survey was carried out to determine the prevalence, abundance and seasonal incidence of gastro-intestinal (GI) nematodes and trematodes (flukes) of sheep and goats in the semi-arid zone of eastern Ethiopia. During May 2003 to April 2005, viscera including liver, lungs and GI tracts were collected from 655 sheep and 632 goats slaughtered at 4 abattoirs located in the towns of Haramaya, Harar, Dire Dawa and Jijiga in eastern Ethiopia. All animals were raised in the farming areas located within the community boundaries for each town. Collected materials were transported within 24 h to the parasitology laboratory of Haramaya University for immediate processing. Thirteen species belonging to 9 genera of GI nematodes (Haemonchus contortus, Trichostrongylus axei, T. colubriformis, T. vitrinus, Nematodirus filicollis, N. spathiger, Oesophagostomum columbianum, O. venulosum, Strongyloides papillosus, Bunostomum trigonocephalum, Trichuris ovis, Cooperia curticei and Chabertia ovina), and 4 species belonging to 3 genera of trematodes (Fasciola hepatica, F. gigantica, Paramphistomum {Calicohoron} microbothrium and Dicrocoelium dendriticum) were recorded in both sheep and goats. All animals in this investigation were infected with multiple species to varying degrees. The mean burdens of adult nematodes were generally moderate in both sheep and goats and showed patterns of seasonal abundance that corresponded with the bi-modal annual rainfall pattern, with highest burdens around the middle of the rainy season. In both sheep and goats there were significant differences in the mean worm burdens and abundance of the different nematode species between the four geographic locations, with worm burdens in the Haramaya and Harar areas greater than those observed in the Dire Dawa and Jijiga locations. Similar seasonal variations were also observed in the prevalence of flukes. But there were no significant differences in the prevalence of each fluke species between the four locations. Overall, the results showed that Haemonchus, Trichostrongylus, Nematodirus, Oesophagostomum, Fasciola and Paramphistomum species were the most abundant helminth parasites of sheep and goats in eastern Ethiopia.  相似文献   

13.
1-(2-Chloroethyl)3-cyclohexyl-1-nitrosourea (CCNU) is an alkylating agent in the nitrosourea subclass. A prospective evaluation of CCNU was done to determine the maximally tolerated dosage of CCNU in tumor-bearing cats. Response data were obtained when available. Twenty-five cats were treated with CCNU at a dosage of 50-60 mg/m3 body surface area. Complete hematologic data were available for 13 cats. Neutropenia was the acute dose-limiting toxicity. The median neutrophil count at the nadir was 1,000 cells/microL (mean, 2,433 cells/microL; range, 0-9,694 cells/microL). The time of neutrophil nadir was variable, occurring 7-28 days after treatment, and counts sometimes did not return to normal for up to 14 days after the nadir. Based on these findings, a 6-week dosing interval and weekly hematologic monitoring after the 1st treatment with CCNU are recommended. The nadir of the platelet count may occur 14-21 days after treatment. The median platelet count at the nadir was 43,500 cells/microL. No gastrointestinal, renal, or hepatic toxicities were observed after a single CCNU treatment, and additional studies to evaluate the potential for cumulative toxicity should be performed. Five cats with lymphoma and 1 cat with mast cell tumor had measurable responses to CCNU. Phase II studies to evaluate antitumor activity should be completed with a dosing regimen of 50-60 mg/m3 every 6 weeks.  相似文献   

14.
Human and equine athletes are reported to have a high prevalence of gastric disease, and anecdotal evidence suggests a similar phenomenon applies to racing sled dogs. To investigate the prevalence of gastric disease in racing sled dogs, we conducted 2 gastroscopy studies on dogs competing in the annual Iditarod Sled Dog Race. A pilot study of dogs that were either dropped from the 2000 Iditarod Sled Dog Race because of illness or that finished the race indicated that, approximately 5 days after competing, 10 of 28 dogs (35%) had endoscopic evidence of gastric ulceration, erosion, or hemorrhage. The next year, an endoscopic study of 73 dogs participating in the 2001 Iditarod race was performed in order to evaluate a larger population of dogs. Data from 70 of these dogs could be used; 34 (48.5%) had ulceration, erosion, gastric hemorrhage, or some combination of these findings. When this group of 70 dogs was compared retrospectively to a control group of 87 dogs presented to the Texas A&M University (TAMU) Veterinary Medical Teaching Hospital, the Iditarod sled dogs had a significantly higher prevalence (P = .049) of gastric lesions. These findings suggest that, similar to athletes of other species, elite canine athletes have an increased prevalence of gastric disease compared to the canine population at large.  相似文献   

15.
Continuous rate infusion (CRI) of furosemide in humans is considered superior to intermittent administration (IA). This study examined whether furosemide CRI, compared with IA, would increase diuretic efficacy with decreased fluid and electrolyte fluctuations and activation of the renin-angiotensin-aldosterone system (RAAS) in the horse. Five mares were used in a crossover-design study. During a 24-hour period, each horse received a total of 3 mg/kg furosemide by either CRI (0.12 mg/kg/h preceded by a loading dose of 0.12 mg/kg IV) or IA (1 mg/kg IV q8h). There was not a statistically significant difference in urine volume over 24 hours between methods; however, urine volume was significantly greater after CRI compared with IA during the first 8 hours ([median 25th percentile, 75th percentile]: 9.6 L [8.9, 14.4] for CRI versus 5.9 L [5.3, 6.0] for IA). CRI produced a more uniform urine flow, decreased fluctuations in plasma volume, and suppressed renal concentrating ability throughout the infusion period. Potassium, Ca, and Cl excretion was greater during CRI than IA (1,133 mmol [1.110, 1,229] versus 764 mmol [709, 904], 102.7 mmol [96.0, 117.2] versus 73.3 mmol [65.0, 73.5], and 1,776 mmol [1,657, 2.378] versus 1,596 mmol [1,457, 1,767], respectively). Elimination half-lives of furosemide were 1.35 and 0.47 hours for CRI and IA, respectively. The area under the excretion rate curve was 1,285.7 and 184.2 mL x mg/mL for CRI and IA, respectively. Furosemide CRI (0.12 mg/kg/h) for 8 hours, preceded by a loading dose (0.12 mg/kg), is recommended when profound diuresis is needed acutely in horses.  相似文献   

16.
Genetic variations in chromosome Y are enabling researchers to identify paternal lineages, which are informative for introgressions and migrations. In this study, the male‐specific region markers, sex‐determining region‐Y (SRY), amelogenin (AMELY) and zinc finger (ZFY) were analysed in seven Turkish native goat breeds, Angora, Kilis, Hair, Honaml?, Norduz, Gürcü and Abaza. A SNP in the ZFY gene defined a new haplotype Y2C. All domestic haplogroups originate from Capra aegagrus, while the finding of Y1A, Y1B, Y2A and Y2C in 32, 4, 126 and 2 Turkish domestic goats, respectively, appears to indicate a predomestic origin of the major haplotypes. The occurrence of four haplotypes in the Hair goat and, in contrast, a frequency of 96% of Y1A in the Kilis breed illustrate that Y‐chromosomal variants have a more breed‐dependent distribution than mitochondrial or autosomal DNA. This probably reflects male founder effects, but a role in adaptation cannot be excluded.  相似文献   

17.
The purpose of this study was to determine the frequency of different tumor types within a large cohort of cats with intracranial neoplasia and to attempt to correlate signalment, tumor size and location, and survival time for each tumor. Medical records of 160 cats with confirmed intracranial neoplasia evaluated between 1985 and 2001 were reviewed. Parameters evaluated included age, sex, breed, FeLV/FIV status, clinical signs, duration of signs, number of tumors, tumor location(s), imaging results, treatment, survival times, and histopathologic diagnosis. Most of the cats were older (11.3 +/- 3.8 years). Primary tumors accounted for 70.6% of cases. Metastasis and direct extension of secondary tumors accounted for only 5.6 and 3.8% of cases, respectively. Twelve cats (7.5%) had 2 or more discrete tumors of the same type, whereas 16 cats (10.0%) had 2 different types of intracranial tumors. The most common tumor types were meningioma (n = 93, 58.1%), lymphoma (n = 23, 14.4%), pituitary tumors (n = 14, 8.8%), and gliomas (n = 12, 7.5%). The most common neurological signs were altered consciousness (n = 42, 26.2%), circling (n = 36, 22.5%), and seizures (n = 36, 22.5%). Cats without specific neurological signs were common (n = 34, 21.2%). The tumor was considered an incidental finding in 30 (18.8%) cats. In addition to expected relationships (eg, meninges and meningioma, pituitary and pituitary tumors), we found that lesion location was predictive of tumor type with diffuse cerebral or brainstem involvement predictive of lymphoma and third ventricle involvement predictive of meningioma.  相似文献   

18.
The epidemiology of H. placei and of other gastrointestinal nematodes in yearling dairy cattle was examined on two farms in Kiambu District, central Kenya during each of 13 one-month periods from April 1993 to April 1994. On each farm, 32 newly weaned dairy calves were given a single dose of albendazole and then placed on experimental pastures. Twelve of the animals were designated for bi-monthly slaughter (n = 2) and analysis of worm population characteristics and 20 were designated for blood and faecal collection and for weighing. Two parasite-free tracer calves were grazed alongside the weaner calves each month throughout the study period and were also slaughtered for analysis of worm populations. Faecal egg counts, haematological and serum pepsinogen determinations, herbage larval counts, and animal live weight changes were recorded monthly. The study revealed that Haemonchus placei, Trichostrongylus axei, Cooperia spp. and Oesophagostomum radiatum were responsible for parasitic gastroenteritis and that H. placei was the predominant nematode present in the young cattle on both farms. Faecal egg counts from resident cattle and necropsy worm counts revealed that pasture larval levels were directly related to the amount of rainfall. The total worm burdens in the animals were highest during the rainy season (March–June and October–December) and lowest during the dry seasons (July–September and January–February). The very low recovery of immature larvae of H. placei from the tracer calves indicated that arrested development is not a feature of the life cycle of this parasite in central Kenya. The maintenance of the parasite population depended on continuous cycling of infection between the host and the pasture. The agroclimatic conditions of the study area were such that, in general, favourable weather conditions for the development and survival of the free-living stages of gastrointestinal nematodes existed all year round.  相似文献   

19.
The occurrence of ectoparasites in sheep flocks is frequently reported but seldom quantified. Sheep production used to be a predominantly family activity in the state of Sa~o Paulo (Brazil), but it began to become a commercial activity in the past decade. Thus, information about the ectoparasites existing in sheep flocks has become necessary. The present data were obtained by means of questionnaires sent to all sheep breeders belonging to the `Associaça~o Paulista de Criadores de Ovinos' (ASPACO; Sa~o Paulo State Association of Sheep Breeders). Response reliability was tested by means of random visits paid to 10.6% of the respondents. Most of the properties (89.5%) reported the presence of one or more ectoparasites. Screw-worm (Cochliomyia hominivorax) was the most frequent ectoparasite (72.5%), followed by bot fly larvae (Dermatobia hominis, 45.0%), ticks (Amblyomma cajennense) and Boophilus microplus, 31.3%) and finally lice (Damalinia ovis, 13.8%). Combined infestations also occurred, the most common one being screw-worm with bot fly larvae (36.0%) followed by bot fly larvae with ticks (13.9%), screw-worm with ticks (9.3%), bot fly larvae with lice (6.9%), and ticks with lice (5.0%). The most common triple combination was screw-worm, bot fly larvae and ticks (12.8%). Breeds raised for meat or wool were attacked by bot fly larvae and ticks more often than other breeds. Lice were only absent from animals of indigenous breeds. The relationships among these ectoparasites are discussed in terms of sheep breeds, flock size, seasonality and the ectoparasitic combinations on the host.  相似文献   

20.
Comparison of different tests to diagnose feline infectious peritonitis   总被引：1，自引：0，他引：1  
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