共查询到20条相似文献，搜索用时 78 毫秒
1.
鸡血清免疫球蛋白制剂的应用研究 总被引：3，自引：0，他引：3
为研究鸡血清免疫球蛋白制剂对肉仔鸡的应用效果，将360只1日龄艾维茵肉仔鸡，随机分成3组，I组于2日龄肌注血清免疫球蛋白制剂1mL/只，20日龄按1mL/只气雾吸入；Ⅱ组于1－49日龄采食含金霉素（50mg/kg)的日粮；Ⅲ组为对照组，饲粮中不添加任何药物。试验结果表明：I组鸡的死亡率比Ⅲ组降低了49．96％，日增重提高了6．21％（P＜0．05），料肉比降低了5．77％（P＜0．05），并与Ⅱ组无显著差异。28日龄时，HI抗体效价分别比Ⅱ组和Ⅲ组显著增加了9．70％和5．60％（P＜0．05），AGP抗体阳性率分别比Ⅱ组和Ⅲ组提高了25．00％和11．11％（P＞0．05）。提示血清免疫球蛋白制剂具有增强肉仔鸡的免疫功能、减少疾病和促进生长的作用。 相似文献
2.
研究基础日粮中添加盐酸洛哌丁胺对白羽肉鸡生产性能的影响。将192只1日龄的白羽肉鸡随机分为4个处理组（每个处理组3个重复，每个重复16只）。在1-21d，44-组饲喂相同的基础日粮，不添加盐酸洛哌丁胺。22-42d对照组饲喂基础日粮，试验I组、试验Ⅱ组和试验Ⅲ组在饲喂基础日粮的基础上，分别添加不同剂量的盐酸洛哌丁胺。结果显示：平均体重方面，在试验的42d，试验I组比对照组高6．81％，差异显著（P〈0．05），试验Ⅱ组比对照组高7．84％，差异极显著（P〈O．01），试验Ⅲ组与对照组差异不显著（P〉0．05）；料重比方面，在试验各阶段及全期，试验I纽、试验Ⅱ组和试验Ⅲ组均与对照组差异不显著（P〉0．05），但在各个试验阶段及全期，试验组料重比较对照组略低。试验结果表明，从白羽肉鸡42d生产性能指标来看，22～2829～35、36～42三个日龄阶段白羽肉鸡日粮中盐酸洛哌丁胺的最适添加量分别为2mg／kg、2．3mg／kg和2．34mg／kg。 相似文献
3.
在粗蛋白水平18％的日粮中，分别添加0．01％喹乙醇和0．1％的三味酸辣散，基础日粮作对照，形成三种试验日粮，36头断奶胡机分成三组，经4周试验结果表明，添加三味酸辣散平均日增重显著高于对照组（P＜0．05）；有优于喹乙醇的趋势，但差异不显著（P＞0．05）。 相似文献
4.
5.
本试验研究了生长猪饲粮中补充酶他富（Natuphos）植酸酶对其生产性能和磷、钙及蛋白质利用的影响。试验选用48头10周龄兰德瑞斯生长猪（24．61±0．45千克）,设4个试验处理,每个处理设6个重复（每重复2头猪）。试验饲粮如下,饲粮1：含0．6％有效确的饲粮作为正对照;饲粮2：含0．4％有效磷的饲粮作为负对照;饲粮3和4：饲粮2的基础上分别加入500和1000PU／千克酶他富（Natuphos）植酸酶添加剂。试验结果表明,负对照组（处理2）生长猪的增重及来食量均显著低于其他处理组（P＜0．05）．其他处理组之间的增重及采食量差异不显著（P＞0．05）．所有处理组之间的料肉比差异不显著（P＞0．05）;负对照组饲粮植酸酶的添加显著增高了磷、钙的消化率（P＜0．05）;低磷饲粮组（处理2,3和4）猪的粪尿磷排放量显著低于正常磷水平饲粮组（处理1）（P＜0．05）。结果说明,饲粮中植酸酶的添加提高了生长猪的生产性能和磷、钙的消化率．减轻了由于饲粮中无机磷的添加而带来的粪尿磷对环境污染的压力。 相似文献
6.
微生态制剂饲喂肉鸡的效果研究 总被引：1，自引：0，他引：1
选用200只节粮特快型江村黄肉仔鸡，随机分为4组：试验组（Ⅰ、Ⅱ、Ⅲ）与对照组（Ⅳ），试验Ⅰ、Ⅱ、Ⅲ组添加微生态制剂（HEM）的量分别为0．1％、0．3％、0．6oA。结果表明：试验组Ⅰ、Ⅱ、Ⅲ比对照组Ⅳ平均日增重分别提高了3．73％、22．99%、20．79％；料肉比分别降低了5．48%、6．39％、5．94%；成活率分别提高了4％、8％、6％；经济效益试验Ⅰ、Ⅱ、Ⅲ组比对照组每只鸡分别可多获纯利为0．97元、1．05元、0．48元。 相似文献
7.
在农养舍饲和不改变基础日粮的条件下，肉兔日粮中添加硫酸钠育肥，试验Ⅰ组在基础日粮中添加0．1％，试验Ⅱ组添加0．2％，试验Ⅲ组添加0．3％，只饲喂基础日粮的作为对照组。结果表明：3个试验组日增重分别为27．1土3．4，28．4土2．7和26．2土2．8g，均明显（P＜0．05）高于日增重23．2±3．1g的对照组。但3个试验组间的差异不明显（P＞0．05），3个试验组的经济效益分别比对照组提高21.2％、29.7％和12．7％。以添加0．2％的试验Ⅱ组育肥效果最好，添加0．3％的试验Ⅲ组育肥效果较差，且随添加量的增加育肥效果趋于下降趋势。 相似文献
8.
选用600只1日龄艾维茵肉鸡,随机分成3组,每组2个重复。第1组基础日粮＋30×10－6杆菌肽锌,第2组基础日粮＋20×10－6喹乙醇,第3组喂基础日粮为对照组,试验期42天。结果表明,第1和第2组鸡全或平均日增重较第3组分别提高8．12％（P＜0．05）和6．49％（P＜0.05）,料肉比分别下降10．85％（P＜0．05）和9．43％（P＜0．05）,死亡率分别下降3.97个百分点（P＞O．05）和4.76个百分点（P＞0．05）。第1组与第2组相比各指标差异不显著（P＞0．05）。 相似文献
9.
试验选用1350只45周龄罗曼褐壳商品蛋鸡，随机分为5组，每组为270只，设3个重复。1组为空白对照组，2，3，4，5各组应激康的添加比例分别为0．5％、1．0％、1．5％、2．0％。试验结果表明：试验期间2，3，5组产蛋率分别比对照组高4．65％（P＜0．05）、3．69％（P＞0．05）、0．96％（P＞0．05），4组产蛋率比对照组低1．39％（P＞0．05）；2，3，4，5组只均产蛋重比对照组分别高7．60％（P＜0．05）、5．21％（P＞0．05）、0．55％（P＞0．05）、3．17％（P＞0．05）；2，4，5组死淘率分别比对照组低48％（P＜0．05）、4％（P＞0．05）、2．7％（P＞0．05），3组比对照组高1．33％（P＞0．05）；2，3，4，5组料蛋比比对照组低（P＞0．05）。综合比较0．5％应激康组饲养效果最佳。 相似文献
10.
试验探讨糖萜素对早期断奶仔猪肠道茵群的影响。选用21日龄左右健康且体质量基本一致的杜×长×大三元杂交猪进行饲喂试验，随机分为5组，每组3个重复，每重复8头猪，自由采食和饮水。试验设计为对照组（1组）；试验2组和试验3组在每千克基础日粮中加入250和500mg糖萜素；试验4组在每千克基础日粮中加入250mg糖萜素＋4mg黄霉素及试验5组基础日粮＋4mg黄霉素。试验结果表明，盲肠中大肠杆菌，试验2、3、4和5组分别比对照组降低4．73％、6．27％、11．98％和1．67％，说明无论是糖萜素和黄霉素单独使用还是二者联合使用，均对盲肠中的大肠杆菌生长有一定的抑制作用，尤其是糖萜素与黄霉素联合使用组和添加500mg／kg糖萜素组效果较好；结肠和直肠中大肠杆菌，各试验组与对照组差异不显著（P〉0．05），其中以500mg／kg糖萜素组大肠杆菌含量最低。添加500mg／kg糖萜素组能显著促进盲肠中双歧杆菌增殖（P〈0．05），并显著高于糖萜素与黄霉素联合使用组和黄霉素单独使用组（P〈0．05），但对结肠和直肠中双歧杆菌增殖不明显（P〉0．05）；糖萜素的不同添加水平对各肠段乳酸杆菌增殖效果不明显（P〉0．05），但在盲肠中各试验组不同程度提高了乳酸杆菌增殖，糖萜素与黄霉素联合使用组对于盲肠中乳酸杆菌的影响大于添加500mg／kg糖萜素组及黄霉素单独使用组。结肠和直肠中乳酸杆菌试验各组差异不显著（P〉0．05），随着糖萜素添加量的增加，乳酸杆菌的含量也增加。 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
12.
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
13.
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
16.
17.
Evaluation of biohydrogenation rate of canola vs. soya bean seeds as unsaturated fatty acids sources for ruminants in situ 
下载免费PDF全文
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
18.
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
19.
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
20.
Tropical Animal Health and Production - 相似文献