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肉鸡低血糖--尖峰死亡综合征(Hypoglycemiaspiking mortality syndrome of broiler chickens,HSMS)是一种主要侵害肉仔鸡的疾病。10~18日龄为发病高峰期,有报道称42日龄的商品代肉鸡也发生本病。临床表现为突然出现的高死亡率,至少持续3~5d,同时伴有低血糖症。病鸡头部震颤、运动失调、昏迷、失明、死亡。有些病鸡可以自然恢复,但常会出现生长发育不良、矮小和气囊炎。HSMS最早报道于1986年,发生在美国的Delmarva半岛地区。1991年报道了41个自然发病鸡群和3个实验感染鸡群。之后,该病向美国东南部地区发展。目前在加拿大、欧洲、马来西亚和南非均有本病发生。自1998年以来,我国华北地区多次发生肉鸡突发性高致死性疾病,现已证实是HSMS。1999年在东北的辽宁省也出现了肉鸡群的突然死亡病例,临床症状与病理变化与HSMS极其相似。 相似文献
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肉鸡低血糖尖峰死亡综合症(HSMS)是一种病原不明的传染病,在加拿大、欧洲、马来西亚、南非、美国均有本病报道,近年来,由于肉鸡生产性能的提高,相应的机体抵抗能力的下降,本病在我国有加剧趋势。 [流行病学] 本病发病率低,但突然出现高死亡率(>0.5％),且至少持续3天,化验室诊断出现低血糖(<80mg/dl),未发病鸡群中血糖水平超过150ml/dl,以7～14日龄肉鸡多 相似文献
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肉鸡低血糖-尖峰死亡综合征 总被引：2，自引：0，他引：2
1 概况肉鸡低血糖 -尖峰死亡综合征 ( hyperglycemia-spiking mortality syndrome of broiler chickens,HSMS)是一种主要侵害肉仔鸡的传染病 ,其病原目前尚未确定。 1 0～ 1 8日龄为发病高峰期 [1,9] ,也有报道 42日龄肉鸡发生 [2 ] 。临床表现为突然出现的高死亡率 ( >1 .0 % )至少持续 3～ 5天 ,同时伴有低血糖症。病鸡头部震颤 ,运动失调 ,昏迷 ,失明 ,死亡。有些病鸡可以自然康复 ,但常会出现生长发育不良、矮小和气囊炎[3～ 5,10 ] 。本病自 1 986年美国 Delmarva半岛地区首次报道后[3 ] ,加拿大、南非、马来西亚、欧洲等国家均有本… 相似文献
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1肉鸡低血糖-尖峰死亡综合征简介肉鸡低血糖-尖峰死亡综合征(HSMS)是一种主要侵害肉仔鸡的疾病,其病原尚未确定,但可以肯定的是该病的发生与某些病毒(如沙粒病毒样粒子)、种鸡、孵化、出雏和光照有关。本病的主要表现为突然出现的高死亡率(>0.5%),至少持续3～5d,同时伴有低血糖症。HSMS最早报道在1986年的美国半岛地区,1991年报道了41个自然发病鸡群和3个实验感染鸡群,之后该病向美国东南部发展,目前在加拿大、欧洲、马来西亚和南非均有本病发生犤1犦。1998年以来,我国华北地区多次发生肉鸡突发性高致病性疾病,造成巨大的经济损失,现已… 相似文献
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自2003年6月份以来，在我国北方肉鸡饲养基地普遍流行了一种主要侵害肉仔鸡的疾病，低血糖-尖峰死亡综合征(HSMS)。HSMS发病日龄集中于10～18日龄．临床表现为突然出现的高死亡率，病鸡头部震颤、运动失调、昏迷、失明、死亡。先后对黑龙江、吉林、辽宁、内蒙古、天津、河北、山东等省进行调查．发现HSMS在这几个省的很多肉鸡饲养区广泛存在。对发生该病的259个肉鸡饲养户的调查结果显示．该病与祖代种鸡没有关系．病原可能来自受污染的父母代种鸡场。平均发病率为17．9％。发病鸡群血糖浓度极显著的下降。从2个发病鸡群的病鸡肠道内容物中观察到病毒颗粒．病毒呈多形性．有囊膜，直径约80-100nm，表面有棒状纤突，长约10-20nm．与冠状病毒类似。 相似文献
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肉鸡低血糖-尖峰死亡综合征的诊治报告 总被引：2，自引：0，他引：2
肉鸡低血糖-尖峰死亡综合征(HSMS)是一种病原尚未确定,主要侵袭肉雏鸡的疾病.1986 年在美国Delmarva 半岛地区首次发现,自1998 年以来,我国华北地区多次发生肉鸡突发性高致病性疾病,现已证实是HSMS.2007年9月中旬,济南市柳埠某肉鸡场突然出现以病鸡头部震颤、运动失调、昏迷、失明、死亡为主要症状的疾病.根据症状、流行特点、剖检变化,诊断为肉鸡低血糖-尖峰死亡综合征. 相似文献
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肉鸡低血糖-尖峰死亡综合征的发生与防制 总被引：1，自引：0，他引：1
1 肉鸡低血糖 -尖峰死亡综合征简介肉鸡低血糖 -尖峰死亡综合征 (hypoglucemiaspikingmortalitysyndromeofbroilerchickens ,HSMS )是一种主要侵害肉仔鸡的疾病 ,其病原尚未确定 ,但可以肯定的是该病的发生与某些病毒 (如沙粒病毒样粒子 )、种鸡、孵化、出雏和光照有关。本病的主要表现为突然出现的高死亡率 (>0 .5 % ) ,至少持续 3～ 5天 ,同时伴有低血糖症。HSMS最早报道是 1986年发生在美国半岛地区 ,1991年报道了 4 1个自然发病鸡群和 3个实验感染鸡群 ,之后该病向美国东南部发展 ,目前在加拿大、欧洲、马来西亚和南非均有本病发生… 相似文献
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肉鸡低血糖———尖峰死亡综合征(HSMS)是一种主要侵害肉仔鸡的疾病,其病原尚未确定,但可以肯定的是该病的发生与某些病毒(如沙粒病毒样粒子)、种鸡、孵化、出雏和光照有关。本病的主要表现为突然出现的高死亡率(>0.5%),至少持续3～5天,同时伴有低血糖症。HSMS最早报道是1986年 相似文献
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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
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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
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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
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Tropical Animal Health and Production - 相似文献
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Waruiru RM Thamsborg SM Nansen P Kyvsgaard NC Bogh HO Munyua WK Gathuma JM 《Tropical animal health and production》2001,33(3):173-187
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
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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
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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
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Evaluation of biohydrogenation rate of canola vs. soya bean seeds as unsaturated fatty acids sources for ruminants in situ 
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下载免费PDF全文 S. Pashaei T. Ghoorchi A. Yamchi 《Journal of animal physiology and animal nutrition》2016,100(2):211-216
An experiment was conducted to study disappearance of C14 to C18 fatty acids, lag times and biohydrogenation (BH) rates of C18 fatty acids of ground soya bean and canola seeds in situ. Three ruminally fistulated Dallagh sheep were used to determine ruminal BH of unsaturated fatty acids (UFAs). Differences in the disappearance of fatty acids through the bags and lag times were observed between the oilseeds. We saw that the longer the incubation time of the oilseeds in the rumen, the lower the content of C18:2 and C18:3. Significantly higher lag times for both C18:2 and C18:3 were observed in ground canola compared to ground soya bean. BH rates of C18:2 and C18:3 fatty acids in soya bean were three times higher than those of canola. These results suggest that the fatty acid profile of fat source can affect the BH of UFAs by rumen micro‐organisms. So that UFAs of canola had higher ability to escape from ruminal BH. It seems that fatty acid profile of ruminant products is more affected by canola seed compared to soya bean seed. 相似文献
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Serum biochemical values and the wet weight to dry weight ratios of tissues were determined in yaks in Shandan county of Gansu province. The liver, kidney, heart and muscle contents of seven elements in yaks were also analysed. Most serum biochemical values were similar to those of cattle, camels and sheep, but the calcium concentration was considerably above the normal range for other ruminants. The liver contained the highest concentrations of copper, manganese and cobalt and the kidney of selenium, iron and calcium.Abbreviations Alb
albumin
- ALT
alanine aminotransferase
- AST
aspartate aminotransferase
- BUN
blood urea nitrogen
- Chol
cholesterol
- Glob
globulin
- -GT
-glutamyl transpeptidase
- IP
inorganic phosphorus
- TP
total protein 相似文献