共查询到20条相似文献，搜索用时 806 毫秒
1.
采用火焰光度法对海南州９０只藏羊的红细胞钾型进行了研究。结果：高钾型羊６３只（７０％），低钾型羊２７只（３０％），Ｋｈ和ＫＬ等位基因频率分别为０．８３６７和０．１６３３ 相似文献
2.
乐都山羊红细胞钾型的研究 总被引：7，自引：3，他引：4
采用火焰光度法对７５只乐都山羊的红细胞钾型进行了调查研究。结果发现：①按红细胞钾浓度，乐都山羊有高钾和低钾两种表型，以高钾为优势表型（８８％）；②高钾型山羊的红细胞钾浓度在４３．５９￣８１．３０ｍｍｏｌ／Ｌ之间，低钾型的在９．３７￣２１．２１ｍｍｏｌ／Ｌ之间；③Ｋ＾ｈ和Ｋ＾Ｌ等位基因频率分别为０．９３８７和０．０６１９，基因杂合度为０．１１６１。 相似文献
3.
采用火焰光度法对海北州牧科所优良种畜繁殖场，９０只夏洛来杂种羊的红细胞钾型进行了研究，结果发现夏洛来杂种羊红细胞钾浓度存在多态性，存在ＨＫ和ＬＫ两种类型，高钾型羊３５只（３８．８９％），低钾型羊５５只（６１．１１％），Ｋｈ和ＫＬ等位基因频率分别为０．６２３６和０．３７６４。 相似文献
4.
青海细毛羊红细胞钾型的初步研究 总被引：10，自引：0，他引：10
采用火焰光度测定法对青海细毛羊红细胞钾型进行了研究。结果发现：青海细毛羊红细胞钾浓度存在多态性，ＨＫ和ＬＫ型羊分别占８．２７％和９１．７８％，Ｋ＾ｈ和Ｋ＾ｌ等位基因频率分别为０．２８６７和０．７１３３，同时还讨论了绵羊钾型与血红蛋白型、血清钾和钠浓度的关系。 相似文献
5.
互助县杂种黄牛红细胞钾型的研究 总被引：5，自引：0，他引：5
根据青海省互助县４０头杂种黄牛的红细胞钾（ＥＫ）浓度分别为高钾（ＨＫ）和低钾（ＬＫ）两种表型，其中ＬＫ型占３５头（８７．５％）为优势表型。ＬＫ型杂种黄牛的ＥＫ浓度为８．９～３０．１ｍｍｏｌ／Ｌ，ＨＫ型的为４５．８～７５．３ｍｍｏｌ／Ｌ，等位基因频率Ｋ＾ｈ＝０．３５３６，Ｋ＾Ｌ＝０．６４６４。 相似文献
6.
采用消化代谢试验、比较屠宰试验、饲养试验、内源尿氮及代谢粪氮测定等方法，研究藏羊生长期氮代谢规律，以测定其蛋白质需要量。研究结果表明，藏羊生长期日粮蛋白质水平以９．０％为宜，高于此值意义不大。用低氮日粮测得藏羊每日排出内源尿氮（ＥＵＮ）为０．１８６ｇ／Ｗ￣０．７５。代谢粪氮（ＭＦＮ）为０．８０９ｇ／Ｗ￣０．７５，氮沉积（ＮＲ）为３．１３ｇ／ｗ￣０．７５。通过对试验数据的统计分析，得出藏羊粗蛋白质维持需要（ＣＰｍ）为８．２８ｇ／Ｗ￣０．７５，日增重需要（ＣＰ△ｇ）为０．４９ｇ／ｇ·△Ｇ）。藏羊生长期的粗蛋白（ＲＣＰ）和可消化粗蛋白质（ＲＤＣＰ）的需要量为：ＲＣＰ（ｇ／ｄ）＝８．２８Ｗ￣０．７５＋０．４９△ＧＲＤＣＰ（ｇ／ｄ）＝６．９１Ｗ￣０．７５＋０．４１△Ｇ 相似文献
7.
互助白牦牛红细胞钾浓度多态性的研究 总被引：3，自引：0，他引：3
采用火焰光度计法对７０头互助白牦牛的红细胞钾浓度多态性进行研究。结果表明：①被检白牦牛有高血钾和低血钾两种表型，以高血钾型为优势表型（８５．７１％）；②Ｋ＾ｈ和Ｋ＾Ｌ等位基因频率分别为０．９２５８和０．０７４２；③白牦牛红细胞钾浓度基因座的有效等位基因数、基因杂合度和基因均质度指数分别为１．１５９３，０．１３７４和０．７５２。 相似文献
8.
提高绵羊受胎率的研究——同期发情试验（一） 总被引：1，自引：1，他引：0
应用氯前列烯醇处理临床健康繁殖适龄母羊共１１８只（海西６２只，海南５６只），其５ｄ内的同期发情率达７９．６９％（海西７９．０３，海南８０．３５％），１０ｄ内的发情率达９４．２６％（海西９０．３２％，海南９８．２１％），与对照组间均有显著差异（Ｐ〈０．００１），情期受胎率略高于对照组（Ｐ〉０．０５）。 相似文献
9.
青海半细毛羊红细胞钾型的研究 总被引：3，自引：1，他引：2
采用火焰光度法对青海半细毛羊的红细胞钾型进行了研究。结果发现：青海半细毛羊的红细胞浓度存在ＨＫ和ＬＫ两种表型，其频率分别为２２．２２％和７２．７８％，Ｋ＾ｈ和Ｋ＾Ｌ等位基因频率分别为０．４７１４和０．５２８６。 相似文献
10.
红细胞钾含量对奶牛耐热性的影响 总被引：14，自引：2，他引：12
１９９５年１～８月，我们测定了江西省畜牧良种场５４４头泌乳牛的红细胞钾含量，并根据其出生年月、胎次、产犊日期、产奶量和红细胞钾含量选出２２头，分成高钾（ＨＫ）和低钾（ＬＫ）两组进行耐热性观察。结果表明ＬＫ组产奶量下降率极显著低于ＨＫ组（Ｐ＜０．０１），ＬＫ组较ＨＫ组耐热。ＬＫ组直肠温度（ＲＴ）低于ＨＫ组，但差异不显著（Ｐ＞０．０５）。 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.
Tropical Animal Health and Production - 相似文献
14.
Rassnick KM Gieger TL Williams LE Ruslander DM Northrup NC Kristal O Myers NC Moore AS 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2001,15(3):196-199
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
15.
H Hayashi T Yoshimura J Y Chen 《Comparative immunology, microbiology and infectious diseases》1985,8(2):73-87
Our particular attention in this article was given to natural mediators for macrophages isolated from the sites of tissue injury. A number of chemotactic factors, which may satisfy many criteria making them acceptable as inflammatory leucocyte chemotactic factors, has been separated. Among them, our laboratory has isolated three macrophage (monocyte) chemotactic factors (MCF-a, -b and -c). Their purification, characterization and functional specificity are discussed. 相似文献
16.
Davis MS Willard MD Nelson SL Mandsager RE McKiernan BS Mansell JK Lehenbauer TW 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2003,17(3):311-314
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
17.
B. Cinar Kul N. Bilgen J.A. Lenstra O. Korkmaz Agaoglu B. Akyuz O. Ertugrul 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2015,132(6):449-453
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
18.
Furosemide continuous rate infusion in the horse: evaluation of enhanced efficacy and reduced side effects 总被引：1，自引：0，他引：1
Johansson AM Gardner SY Levine JF Papich MG LaFevers DH Fuquay LR Reagan VH Atkins CE 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2003,17(6):887-895
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
19.
Ling GV Thurmond MC Choi YK Franti CE Ruby AL Johnson DL 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2003,17(6):817-823
The objective of this report was to characterize 20-year changes in proportion of calcium oxalate (CaOx) calculi and struvite calculi in dogs, and associations with breed, age, and sex. In this retrospective study, results of analysis of urinary calculi from dogs were reviewed for specimens received between July 1, 1981, and December 31, 2001. Breed, sex, age, year of submission of the specimen, and mineral type(s) were analyzed statistically. CaOx or Struvite or both were contained in 18,966 of 20,884 (91%) specimens. For both sexes, a 20-year statistically significant increase was observed in the proportion of calculus specimens that contained CaOx. The increase in this proportion was greater in females (1% to 31%) than in males (18% to 82%). From 1998 to 2001, when proportions may have plateaued, the odds of specimens containing CaOx were markedly higher in 18 breeds, markedly lower in 5 breeds, and not significantly different in 13 breeds compared with crossbreds. For both sexes, a 20-year statistically significant decrease was observed in the proportion of calculus specimens that contained struvite. This decrease in proportion was greater for males (79-16%) than for females (97-68%). From 1998 to 2001, when proportions plateaued, the odds of calculi containing struvite were markedly lower in 20 breeds, markedly higher in 1 breed, and not significantly different in 15 breeds when compared with crossbreds. Breed, age, and sex were associated statistically with CaOx or struvite urolithiasis. In conclusion, there appears to have been a long-term increase in the proportion of specimens of canine urinary calculi that contain CaOx as well as a long-term decrease in the proportion of specimens of calculi that contain struvite for both male and female dogs. The rate of change appeared to begin leveling off in the period 1998 to 2001. The recent proportion of dogs with either CaOx- or struvite-associated urolithiasis may depend on breed, age, and sex, and on interactions among these 3 factors. 相似文献
20.
<正>1.INTRODUCTION Ensuring transportation network security is one Of the most daunting challenges confronting homeland security agencies today.Significant research has been dedicated.To model and analyze the vulnerability of transportation systems,while notably fewer studies propose specific strategies for deploying defensive technologies to safeguard these systems. 相似文献