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1.
用两种含Ｓｅ,Ｃｕ和Ｃｏ复合微量元素的缓释丸给双峰驼投服后６０ｄ,均可使双蜂驼全血和被毛Ｓｅ,Ｃｕ和Ｃｏ含量显著升高（Ｐ〈０．０１）,在动物适宜的范围内波动,且两种缓释丸对体内元素水平的影响差异不显著（Ｐ〉０．０５）。表明两种缓释丸均能作为双蜂驼补充微量元素营养的简便有效措施。 相似文献
2.
黄牛与牦牛投服微量元素缓释丸的应用研究 总被引：4，自引：1，他引：3
选择４０头黄牛和２０头牦牛，投服自制的Ｓｅ，Ｃｕ和Ｃｏ复合微量元素缓释丸，研究了元素在体内的代谢动力学。结果表明，投服缓释丸后第６０ｄ体内Ｓｅ，Ｃｕ和Ｃｏ含量明显升高（Ｐ〈０．０１），元素之间未出现明显的拮抗作用。经过全血和被毛元素含量的动态分析，该缓释丸能使牛体内Ｓｅ，Ｃｕ和Ｃｏ适宜水平至少维持１ａ以上。 相似文献
3.
含硫氨基酸与铜对肉鸡胫骨软骨发育不良的影响 总被引：1，自引：0，他引：1
研究日粮过量含硫氨基酸 （ 简称 Ｓ Ａ Ａ , 为推荐量的１５ 倍） 与高铜 （８８６６ ｍｇ／ｋｇ , 为推荐量的１０ 倍） 对肉鸡胫骨软骨发育不良 （ Ｔ Ｄ） 的影响。试验采用半纯合饲粮 （ 含 Ｃｕ ０６６ ｍｇ／ｋｇ） , 试验处理分为正常 Ｓ Ａ Ａ 与 Ｃｕ 组, 高 Ｓ Ａ Ａ 与正常 Ｃｕ 组, 正常 Ｓ Ａ Ａ 与高 Ｃｕ 组和高 Ｓ Ａ Ａ 与高 Ｃｕ 组,试验期２１ ｄ 。结果： 过量 Ｓ Ａ Ａ 降低肉鸡体重、饲料转化率、骨灰、肝 Ｃｕ 、胰 Ｃｕ （ Ｐ ＜ ００１ 或 Ｐ ＜ ００５） , 增加胫骨长度 （ Ｐ ＜ ００５） , 诱发 Ｔ Ｄ发病率升高 （ Ｐ ＜ ００１） , Ｔ Ｄ 指数显著上升 （ Ｐ ＜ ００５） 。高 Ｃｕ 日粮增加肝 Ｃｕ 、肾 Ｃｕ 沉积 （ Ｐ ＜ ００１ 或 Ｐ ＜ ００５） , 提高饲料转化率 （ Ｐ ＜００５） , 但不诱发肉鸡 Ｔ Ｄ 发病率增加。添加高 Ｃｕ 对过量 Ｓ Ａ Ａ 致肉鸡 Ｔ Ｄ 发病率上升无减缓作用, 适宜的 Ｓ Ａ Ａ 和 Ｃｕ 水平是促进肉鸡生长、降低肉鸡 Ｔ Ｄ 发病率的重要限制因素之一。 相似文献
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5.
蛋氨酸螯合锌对肉鹑增重及蛋白质代谢率的影响 总被引：2，自引：0，他引：2
本实验研究了蛋氨酸螯合锌对肉鹑增重及蛋白质代谢率的影响。试验结果表明：各试验组增重显著高于对照组（Ｐ＜００１），而料肉比低于对照组，但未达到统计学显著水平。蛋白质表观代谢率第Ⅰ组（Ｐ＜００５），第Ⅱ组（Ｐ＜００１）极显著高于对照组，第Ⅱ组显著高于第Ⅰ组（Ｐ＜００５）。 相似文献
6.
鸡包涵体肝炎病毒（IBHV）对雏鸡淋巴细胞和红细胞免疫功能的影响 总被引：9，自引：0，他引：9
为探讨鸡包涵体肝炎病毒（ Ｉ Ｂ Ｈ Ｖ）引起免疫抑制的机理，给 １ 周龄雏鸡经口感染鸡Ⅷ型腺病毒，观察了感染后不同时间血液淋巴细胞转化率、 Ｒ Ｂ Ｃ Ｃ３ｂ 受体花环率和 Ｒ Ｂ Ｃ Ｉ Ｃ 花环率的动态变化。结果表明，淋巴细胞转化率和 Ｒ Ｂ Ｃ Ｃ３ ｂ 受体花环率于感染后 ３ ｄ 开始下降，至 ９ ｄ 降至最低，显著低于对照组（ Ｐ ＜ ００１）； Ｒ Ｂ Ｃ Ｉ Ｃ 花环率于感染后 ５ ｄ 开始升高，至 １１ ｄ 达最高，显著高于对照组（ Ｐ ＜ ００１）。证实 Ｉ Ｂ Ｈ Ｖ 能够引起淋巴细胞和红细胞免疫功能降低。 相似文献
7.
绵羊铅镉联合中毒的研究 总被引：4，自引：0，他引：4
研究了白银矿区周围绵羊以消瘦和贫血为主要特征的疾病。通过检测食物链系统及绵羊全血、被毛和组织器官中１３种矿物元素（Ｐｂ、Ｃｄ、Ｚｎ、Ｆｅ、Ｍｎ、Ｍｏ、Ｃｕ、Ｆ、Ａｓ、Ｓｅ、Ａｌ、Ｃａ、Ｐ）的含量，分析血液生理生化指标的变化，揭示出现地牧草中Ｐｂ、Ｃｄ的含量高，分别为（１１１．２±９８．４）μｇ／ｇ和（１２．０±１．２）μｇ／ｇ；动物体内的Ｐｂ、Ｃｄ沉积量亦极显著高于允许值（Ｐ＜０．０１）；动物呈低色素小细胞性贫血，血清ＬＤＨ、ＡＬＴ活性和Ｔ３含量显著升高（Ｐ＜０．０１），血清蛋白含量降低（Ｐ＜０．０１），以及实质器官变性、坏死，肾小管上皮细胞核包涵体等病理学特点。确认该病系工业环境污染所致的绵羊铅镉联合中毒 相似文献
8.
采用 １,６二苯基１,３,５己三烯（１,６ｄｉｐｈｅｎｙｌ１,３,５ｈｅｘａｔｒｉｅｎｅ, Ｐ Ｈ, Ｓｉｇｍ ａ Ｃｈｅｍ ｉｃａｌ Ｃｏ）分子荧光偏振法研究了内毒素诱导山羊红细胞膜的流动性（ Ｐ）,膜脂区微粘度（η）及脂双层分子排列有序性系数（ Ａ）的变化及６５４２ 的影响。结果表明, Ｅ Ｔ 处理组（Ⅱ组） Ｅ Ｃ Ｍ 的 Ｐ、和 Ａ参数除在１ｈ 高于对照组（Ⅰ组）和６５４ Ｚ２处理（Ⅲ组）且差异不显著（ Ｐ＞ ０．０５）外,在 ３,５,７,９,１２ｈ 均高于Ⅰ组和Ⅲ组（ Ｐ＜０．０５）, Ｐ＜ ０．０１）;Ⅲ组 Ｐ、和 Ａ 参数在１ ｈ低于Ⅰ组且差异不显著（ Ｐ＞ ０．０５）,在３ ｈ显著低于Ⅰ组（ Ｐ＜ ０．０１）,在５ 和７ ｈ 高于Ⅰ组（ Ｐ＜ ０．０５, Ｐ＜ ０．０１）,在９ ｈ,１２ ｈ 虽高于Ⅰ组但无显著差异（ Ｐ＞ ０．０５）。结果显示, Ｅ Ｔ 可使 Ｅ Ｃ Ｍ 荧光偏振度（ Ｐ）、微粘度（η）和脂双层分子排列有序性（ Ａ）增加。膜流动性降低,而６５４２ 能有效地改善 Ｅ Ｔ诱导的这些损伤变化,支持了６５４２ 具有维护膜结构和功能的生理作用的理论。 相似文献
9.
多糖微量元素络合物添加剂对肉鸡的试用效果研究 总被引：2，自引：0，他引：2
以含Ｆｅ、Ｃｕ、Ｚｎ、Ｍｎ等无机微量元素（Ⅱ组），复合氨基酸微量元素螯合物（Ⅲ组）和自制多糖微量元素络合物（Ⅳ组）分别添加于相同的基础日粮中试喂肉鸡。结果表明：Ｆｅ、Ｚｎ、Ｍｎ的吸收利用率以Ⅳ组最高，Ⅱ组最低，而Ｃｕ的吸收利用率却与之相反，Ⅳ组与Ⅱ组间差异显著（Ｐ＜０．０５）。肉鸡生长率以Ⅳ组最高，与Ⅱ组差异极显著（Ｐ＜０．０１），料重比Ⅳ组最低，与Ⅱ组差异显著（Ｐ＜０．０５）。Ⅳ组与Ⅲ组间吸收利用率、生长率、料重比差异均不显著（Ｐ＞０．０５）。各组鸡肝、胃、肌肉中这４种微量元素含量均无显著差异（Ｐ＞０．０５），都符合ＦＤＡ卫生标准。饲用经济效益，Ⅳ组分别比Ⅱ组和Ⅲ组提高２０．２２％和３．８９％。 相似文献
10.
甜菜碱促进猪生长的机理 总被引：15，自引：5，他引：10
９６ 头“杜长大”生长猪按饲养试验要求分成 ４ 组（每组 ３ 个重复）,分别饲 以添加 ０、１ ０００、１ ５００、２ ０００ ｍ ｇ／ｋｇ甜菜碱的基础日粮,试验期 ６２ ｄ。结果表明,１ ０００ ｍ ｇ／ｋｇ 剂量组试验猪生长性能最佳,日增重较对照组提高了 １３２０％ （ Ｐ ＜ ００１）, 料重比降低了 ７９３％ （ Ｐ ＜ ００１）。该组猪血清 Ｇ Ｈ、 Ｉ Ｇ Ｆ Ｉ、 Ｔ３ 、 Ｔ４ 水平分别升高了 １０１７６％ （ Ｐ＜ ００１）, ４４７５％ （ Ｐ ＜ ００１）, ２６５３％ （ Ｐ＜ ００１） 和 １６８３％ （ Ｐ＜ ００５）; 血清游离丝氨酸含量提高了 １４２８％ （ Ｐ ＜ ００５）; 血清总蛋白上升了 ２１６９％ （ Ｐ ＜ ００１）, 血清尿素氮含量降低 了 ４７６７％ （ Ｐ ＜ ００１）; 背最 长肌 和 肝脏 中 Ｒ Ｎ Ａ 含量 及 背最 长肌 Ｒ Ｎ Ａ／ Ｄ Ｎ Ａ 比 率分 别升 高了１２６０％ （ Ｐ ＜ ００５）, １７８０％ （ Ｐ ＜ ００２） 和 １９７９％ （ Ｐ ＜ ００２）; 肝脏 和腺 垂体 ｃ Ａ Ｍ Ｐ 含 量提 高了４７５３％ （ Ｐ ＜ ００１） 和 ６５２１％ （ Ｐ ＜ ００１）。研究结果提示,甜菜碱似作用 相似文献
11.
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
14.
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
15.
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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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
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正We are pleased to publish the second special issue on avian brood parasitism and to be responsible guest editors for the two special issues of Chinese Birds (Vol. 3, No. 4, 2012 and Vol. 4, No. 1, 2013), entitled "Avian Brood Parasitism - A Growing Research Area in Behavioral Ecology". The first issue was published in December 2012. The goal of the two special issues is to publish accumulated knowledge and some of the recent developments in 相似文献
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Tropical Animal Health and Production - 相似文献