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1.
22个苜蓿品种在甘肃永登地区的生产适应性评价 总被引：2，自引：0，他引：2
以22个苜蓿品种为试验材料,在甘肃永登地区进行生产适应性评价,测定了各品种的产量和品质指标。结果表明:干草总产量最高的是甘农4号(17 537.0kg/hm2),其次为德宝(16 610.8kg/hm2)、甘农5号(16 356.7kg/hm2),陇中苜蓿(10 220.0kg/hm2)最低;平均株高最高为驯鹿(88.1cm),其次为阿尔冈金(84.6cm)、中苜1号(83.7cm),最低的是陇中苜蓿(65.2cm);生长速度较快的是驯鹿(1.39cm/d)、阿尔冈金(1.33cm/d)、中苜1号(1.31cm/d),最慢为陇中苜蓿(0.99cm/d);粗蛋白含量最高的是三得利(18.51%),其次为北极星(18.24%)、驯鹿(17.77%),最低的品种为柏拉图(15.35%);酸性洗涤纤维含量最低为太阳神(33.38%),其次是苜蓿王(33.40%)、皇后(33.58%),最高的是甘农1号(40.04%);中性洗涤纤维含量最低为陇东苜蓿(41.6%),其次是甘农3号(41.9%)、太阳神(42.5%),含量最高的是甘农8号(48.7%);粗灰分含量最高是驯鹿(11.39%),其次是甘农3号(11.29%)、中兰1号(11.17%),含量最低的是皇后(9.64%);粗脂肪含量最高为北极星(2.41%),其次为中苜1号(2.34%)、太阳神(2.33%),含量最低的是甘农1号(1.77%)。综合评价结果表明:供试的22个品种中,甘农4号、德宝、甘农5号、阿尔冈金、陇东苜蓿、皇后、中苜1号品种产草量高、品质好,综合评价较高,具有潜在的推广价值,适宜于在甘肃灌区大面积推广应用。 相似文献
2.
The effects of experimental Salmonella cholerae-suis inoculation with a virulent and an avirulent strain on serum iron (SI), total iron-binding capacity (TIBC), and transferrin (TF) were evaluated. Inoculation of virulent strain 38 was followed by significant (P less than 0.05) decreases of SI, TIBC, and TF. Exposure to avirulent strain 33 was followed by moderate decreases of SI, TIBC, and TF. When exposure to avirulent strain 33 was followed by challenge exposure with virulent strain 38, the SI, TIBC, and TF values remained at initial values or were higher. Negative correlation was observed between rectal temperature and SI and TIBC values, but was significant (P less than 0.0001) only 7 days after inoculation of the virulent strain 38. 相似文献
3.
以黄土高原广泛分布的人工刺槐(Robinia pseudoacia)纯林为研究对象,通过采集林地腐殖质土壤并与7种常见豆科牧草的枯落物进行120 d混合分解培养试验,分析牧草枯落物对刺槐纯林土壤性质的改良和土壤极化的防治效应.结果表明:对于黄土丘陵区(黄陵)刺槐纯林土壤,苜蓿(Medicago sativa)具有明显的改良作用,其次为草木樨(Melilotus officinalis);而胡枝子(Leapedeza bicolor)具有明显的恶化作用,其次为毛苕子(Vicia villosa)、红豆草(Onobrychis viciifolia)和沙打旺(Astragalus adsurgens);对于黄土残塬沟壑区(淳化)刺槐纯林土壤,草木樨和沙打旺具有明显的改良作用,其次为毛苕子;而小冠花(Coronilla varia)具有明显的恶化作用,其次为红豆草. 相似文献
4.
The blood pressure of pigs for slaughter were measured. Onset of electric anaesthesia was followed by blood pressure rise of about 25 per cent. Peak values of 100 per cent in excess of the original pressure were recorded in some cases. Termination of the electric stimulus, generally, was followed by sudden blood pressure drop. The original pressure usually was reached ten seconds from the debleeding puncture. With continued debleeding, it stayed at 75 mm Hg after 50 seconds on average. Extraordinary high rise in blood pressure in response to electric stimulation usually was followed by rapid pressure drop, whereas in cases with moderate rise at the time of anaesthesia the subsequent decline was at slower rates. 相似文献
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6.
The histology of skin responses to infestations with female Ixodes holocyclus ticks was investigated in naive and previously infested cattle. In the latter hosts, infiltration of the skin site with basophil leucocytes was an early event. Concurrent spongiosis and vesiculation occurred in the epidermis adjacent to the tick mouthparts. This was followed by infiltration of the upper dermis by eosinophils and other leukocytes. Such reactions were evident one hour after attachment of ticks in hosts which had received two prior infestations. Pronounced epidermal vesiculation and bulla formation with eventual serous exudation followed in previously infested cattle, leading to entrapment of ticks. 相似文献
7.
Dowers KL Uhrig SR Mama KR Gaynor JS Hellyer PW 《American journal of veterinary research》2006,67(10):1794-1801
OBJECTIVE: To evaluate effects of injection with a nonsteroidal anti-inflammatory drug (NSAID) followed by oral administration of an NSAID on the gastrointestinal tract (GIT) of healthy dogs. ANIMALS: 6 healthy Walker Hounds. PROCEDURES: In a randomized, crossover design, dogs were administered 4 treatments consisting of an SC injection of an NSAID or control solution (day 0), followed by oral administration of an NSAID or inert substance for 4 days (days 1 through 4). Treatment regimens included carprofen (4 mg/kg) followed by inert substance; saline (0.9% NaCl) solution followed by deracoxib (4 mg/kg); carprofen (4 mg/kg) followed by carprofen (4 mg/kg); and carprofen (4 mg/kg) followed by deracoxib (4 mg/kg). Hematologic, serum biochemical, and fecal evaluations were conducted weekly, and clinical scores were obtained daily. Endoscopy of the GIT was performed before and on days 1, 2, and 5 for each treatment. Lesions were scored by use of a 6-point scale. RESULTS: No significant differences existed for clinical data, clinicopathologic data, or lesion scores in the esophagus, cardia, or duodenum. For the gastric fundus, antrum, and lesser curvature, an effect of time was observed for all treatments, with lesions worsening from before to day 2 of treatments but improving by day 5. CONCLUSIONS AND CLINICAL RELEVANCE: Sequential administration of NSAIDs in this experiment did not result in clinically important gastroduodenal ulcers. A larger study to investigate the effect of sequential administration of NSAIDs for longer durations and in dogs with signs of acute and chronic pain is essential to substantiate these findings. 相似文献
8.
Comparative serological examination of 300 serum samples from sheep slaughtered in the main abattoir in Cairo, Egypt revealed a higher prevalence of toxoplasmosis (43.7%) with the modified agglutination test (MAT), followed by the enzyme linked immune-sorbant assay (ELISA) (41.7%) and the indirect fluorescent antibody test (IFAT) (37%), while the lowest prevalence was detected with the dye test (DT) (34%). When the data from the first three serological tests were compared with that of the DT test, which was used as a reference test for toxoplasmosis, MAT had the highest sensitivity (96%), followed by ELISA (90.1%) and IFAT, which demonstrated the lowest sensitivity (80.4%). Conversely, IFAT had the highest specificity (91.4%), followed by MAT (88.9%) and ELISA (85.9%). 相似文献
9.
The kinetics of bovine viral diarrhea (BVD) virus neutralization (VN) by hyperimmune serum followed first order kinetics at low dilutions (1:8 and 1:16) of hyperimmune bovine serum. A lag phase in the VN curve occurred when the serum was further diluted. Addition of rabbit anti-bovine IgG, but not anti-IgM, significantly increased the degree of VN after BVD virus was reacted with further diluted (1:256 dilution) anti-BVD bovine hyperimmune serum. Incubation of virus-hyperimmune serum (1:64 dilution) at 4 degrees C for 0 to 60 min, followed by incubation at 37 degrees C indicated VN occurred as a two-stage process: a binding (temperature-independent) phase that was followed by a triggering (temperature-dependent) phase. The data favor the thesis that neutralization of BVD virus occurs by a multi-hit mechanism and requires combination of at least two molecules of antibody with each virus. 相似文献
10.
以酿酒葡萄“贵人香”为试材,连续两年研究了模式化修剪保留不同叶幕厚度处理对葡萄果实产量、品质和枝条贮藏营养等生长发育指标的影响,以期为葡萄简化修剪技术的研发提供理论依据。结果表明,叶幕厚度90cm处理产量最高,其次为60cm处理,两者无显著差异,30cm处理最低。叶幕厚度60cm处理果实的可溶性固形物、总糖、糖酸比和维生素C含量均最高,显著高于其他处理,其次为90cm处理,30cm和120cm两个处理最低。可滴定酸含量表现相反趋势。叶幕厚度60cm处理单宁和总酚含量均最高,其次为90cm和30cm处理,120cm处理最低,显著低于其他处理。叶幕厚度60cm、90cm和120cm三个处理枝条的可溶性糖、淀粉和可溶性蛋白含量均无显著差异,显著高于30cm处理。2014年叶幕厚度60cm处理的游离氨基酸含量最高,其次为90cm处理,两者无显著差异,显著高于120cm和30cm处理,30cm处理显著低于其他各处理。综合分析,在辽宁省朝阳市气候条件下,模式化修剪叶幕厚度保留60cm时,“贵人香”葡萄表现最佳,其次为90cm处理,30cm和120cm处理最差。 相似文献
11.
Fermenting different raw materials (corn, soybean meal and cottonseed meal) with three kinds of strains (Lactobacillus, yeast and Bacillus subtilis) were employed to optimize the fermentation parameter with sensory evaluation, pH and amount of probiotics retention.The results showed that the time to reach stable pH of materials with different substrates was different.Cottonseed meal had the longest time to reach stable pH followed by soybean meal, while corn had the shortest time under the condition of same water content.Different substrates had no effect on initial pH of corn, soybean meal and cottonseed meal.The count of the probiotics was also influenced by different substrates.When pH reached steady state, corn had the largest number of the probiotics followed by soybean meal and cottonseed meal.The color and smell of three materials after fermented had distinctive features.But cottonseed meal had the highest viscosity followed by soybean meal and corn.Because of shorter time and more microorganisms, corn was better than soybean meal and cottonseed meal to be fermenting medium. 相似文献
12.
Tzannes S Ibarrola P Batchelor DJ Burrow RD Blackwood L 《Journal of the American Animal Hospital Association》2008,44(5):276-282
An 8-year-old, mixed-breed dog with preputial epitheliotropic lymphoma was initially treated with cyclophosphamide, vincristine, and prednisolone. A short-term partial response was followed by disease progression after 4 weeks. Recombinant human interferon alpha-2a was administered starting at week 7. The interferon therapy resulted in rapid resolution of clinical signs and a 10-week disease-free interval. The lymphoma recurred at 17 weeks and did not respond to rescue chemotherapy. Additional oral lesions were treated with localized radiotherapy followed by increased dosages of interferon. This additional interferon treatment resulted in another 12 weeks of stable disease. 相似文献
13.
Hidetoshi ISHIBASHI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2016,78(2):317-319
The common marmoset has been increasingly used for research in the biomedical field; however, there is little
information available regarding effective methods of anesthesia in this species. This study retrospectively
analyzed 2 regimens of anesthesia induction: intramuscular injection of ketamine followed by inhalation of 5%
sevoflurane, and intramuscular injection of midazolam, butorphanol and ketamine followed by inhalation of 5%
sevoflurane. Anesthetic depth did not reach the surgical anesthesia stage in 7 out of 99 animals receiving the
former regimen, whereas there were only 2 such animals out of 273 receiving the latter regimen. The latter
regimen, when followed by maintenance anesthesia with 3% sevoflurane inhalation, was successfully used in
various nociceptive procedures. These results indicate that the injection of a combination of midazolam,
butorphanol and ketamine followed by inhalation of a high concentration of sevoflurane is effective for
anesthesia induction in marmosets. 相似文献
14.
OBJECTIVE: To assess the sedative and cardiopulmonary effects of medetomidine and xylazine and their reversal with atipamezole in calves. ANIMALS: 25 calves. PROCEDURES: A 2-phase (7-day interval) study was performed. Sedative characteristics (phase I) and cardiopulmonary effects (phase II) of medetomidine hydrochloride and xylazine hydrochloride administration followed by atipamezole hydrochloride administration were evaluated. In both phases, calves were randomly allocated to receive 1 of 4 treatments IV: medetomidine (0.03 mg/kg) followed by atipamezole (0.1 mg/kg; n = 6), xylazine (0.3 mg/kg) followed by atipamezole (0.04 mg/kg; 7), medetomidine (0.03 mg/kg) followed by saline (0.9% NaCl; 6) solution (10 mL), and xylazine (0.3 mg/kg) followed by saline solution (10 mL; 6). Atipamezole or saline solution was administered 20 minutes after the first injection. Cardiopulmonary variables were recorded at intervals for 35 minutes after medetomidine or xylazine administration. RESULTS: At the doses evaluated, xylazine and medetomidine induced a similar degree of sedation in calves; however, the duration of medetomidine-associated sedation was longer. Compared with pretreatment values, heart rate, cardiac index, and PaO(2) decreased, whereas central venous pressure, PaCO(2), and pulmonary artery pressures increased with medetomidine or xylazine. Systemic arterial blood pressures and vascular resistance increased with medetomidine and decreased with xylazine. Atipamezole reversed the sedative and most of the cardiopulmonary effects of both drugs. CONCLUSIONS AND CLINICAL RELEVANCE: At these doses, xylazine and medetomidine induced similar degrees of sedation and cardiopulmonary depression in calves, although medetomidine administration resulted in increases in systemic arterial blood pressures. Atipamezole effectively reversed medetomidine- and xylazine-associated sedative and cardiopulmonary effects in calves. 相似文献
15.
试验采用3个菌种(乳酸菌、酵母菌、枯草芽孢杆菌)分别固态发酵相同水分的3种原料(玉米、豆粕、棉籽粕),以感官评价、原料pH变化和发酵后益生菌存留量作为评价指标,探讨不同饲料原料品质随发酵时间变化的规律,优化发酵饲料生产工艺。结果显示,不同饲料原料达到稳定pH所需的时间不同,相同发酵菌种达到pH稳定所需的时间为:玉米< 豆粕< 棉籽粕;玉米、豆粕和棉籽粕的种类对初始pH无影响;在pH达到稳定时,3种原料发酵后颜色和气味各呈现相应的特性,而黏度强度表现为:棉籽粕 >豆粕 >玉米;益生菌存留数量为:玉米 >豆粕 >棉籽粕。由此可知,玉米作为微生物发酵底物,发酵率高,益生菌存留量多,优于豆粕和棉籽粕。 相似文献
16.
Splenic enlargement following administration of barbiturates has been well described in dogs; other agents have not been investigated. This study aimed to compare the effects of four anesthetic protocols on splenic size.
Twenty-four fasted Beagle dogs scheduled for laparotomy were allocated to one of the four groups. Group 1: acepromazine and butorphanol followed by induction with thiopental; Group 2: acepromazine and butorphanol followed by induction with propofol; Group 3: medetomidine and butorphanol followed by induction with propofol; Group 4: medetomidine and butorphanol followed by induction with ketamine and diazepam. Anesthesia was maintained with halothane in oxygen, intravenous fluids were administered. Splenic length, width and height were measured once when the abdomen was opened and again just prior to closure. Spleens were also traced, the image was digitized, and the area was calculated. PCV and total solids were measured before and after pre-medication, after induction, and each time the spleen was measured. Data were analyzed using a Repeated Measures anova with splenic variables indexed by body surface area and dose of induction agent as a covariate.
Area and width of the spleens were less in the dogs of Groups 2 and 3 than in those of the other groups. Splenic area and length did not change significantly during surgery. Dosage of propofol was not significantly different between Groups 2 and 3. Baseline PCV was not significantly different among groups and decreased significantly in all dogs, but at different times. In Groups 1 and 2, the decrease occurred after pre-medication, in Group 3 at induction, and in Group 4 during surgery. A significant decrease in TS occurred in all groups during surgery.
We concluded that the use of propofol resulted in smaller spleen size during surgery than that following the use of thiopental. Multiple factors influenced the PCV. 相似文献
Twenty-four fasted Beagle dogs scheduled for laparotomy were allocated to one of the four groups. Group 1: acepromazine and butorphanol followed by induction with thiopental; Group 2: acepromazine and butorphanol followed by induction with propofol; Group 3: medetomidine and butorphanol followed by induction with propofol; Group 4: medetomidine and butorphanol followed by induction with ketamine and diazepam. Anesthesia was maintained with halothane in oxygen, intravenous fluids were administered. Splenic length, width and height were measured once when the abdomen was opened and again just prior to closure. Spleens were also traced, the image was digitized, and the area was calculated. PCV and total solids were measured before and after pre-medication, after induction, and each time the spleen was measured. Data were analyzed using a Repeated Measures anova with splenic variables indexed by body surface area and dose of induction agent as a covariate.
Area and width of the spleens were less in the dogs of Groups 2 and 3 than in those of the other groups. Splenic area and length did not change significantly during surgery. Dosage of propofol was not significantly different between Groups 2 and 3. Baseline PCV was not significantly different among groups and decreased significantly in all dogs, but at different times. In Groups 1 and 2, the decrease occurred after pre-medication, in Group 3 at induction, and in Group 4 during surgery. A significant decrease in TS occurred in all groups during surgery.
We concluded that the use of propofol resulted in smaller spleen size during surgery than that following the use of thiopental. Multiple factors influenced the PCV. 相似文献
17.
I R Dohoo 《Canadian journal of veterinary research》1984,48(1):6-9
Health and fertility data were recorded in 32 southern Ontario Holstein herds over a period of two and a half years. During that time 2.6% (80/3123) of breedings were followed by a postbreeding infusion. Breedings were divided into groups according to the breeding number (first to fifth), age group (less than 3 yr, 3 to 5.9 yr, greater than or equal to 6 yr) and disease status of the reproductive tract (four groups). The rate of use of infusions was higher following third to fifth breedings, increased with the age of the cow and was much higher in cows with a diagnosis of uterine infection. For each individual group of breedings the odds of a breeding followed by an infusion resulting in a pregnancy was compared to the odds of a breeding not followed by an infusion resulting in a pregnancy. In general the ratios of these odds were less than one, possibly indicating a detrimental effect due to the infusion. Summary odds ratios were calculated for each breeding number, each age group and each infection category. Again, in general, the odds ratios were less than one although the differences from one were not significant at p = 0.05. Two estimates of the overall summary odds ratio (based on all breedings) indicated that breedings followed by an infusion were only approximately 0.7 times as likely to result in a pregnancy as breedings not followed by an infusion. The two estimates of the summary odds ratio were not significantly different from one at p = 0.05. Several possible sources of bias in this type of trial, and their potential effects on the results are discussed. 相似文献
18.
Alterations in neutrophil phagocytosis and lymphocyte blastogenesis in dairy cows around parturition 总被引：2，自引：0，他引：2
A M Saad C Concha G Astr?m 《Zentralblatt für Veterin?rmedizin. Reihe B. Journal of veterinary medicine. Series B》1989,36(5):337-345
The bovine blood neutrophil phagocytosis and the blood and milk lymphocyte proliferative response upon stimulation with Phytohaemagglutinin, Concanavalin A and Pokeweed mitogens was studied from 3 weeks prior to calving until 3 weeks after calving. Neutrophil phagocytosis and the total and differential blood leukocyte counts were performed by flow cytometry. A gradual increase in the percentage of phagocytized bacteria and the average number of bacteria per phagocyte was observed before calving followed by a sharp fall on the first postpartum. This was followed by a steady increase in the above parameters reaching the highest levels at two weeks postpartum. There was a gradual increase in the number of neutrophils in blood as calving approached followed by a sharp decrease after calving. The number of lymphocytes in blood dropped before calving, being at the lowest level on the day before calving. The proliferative response of blood and milk lymphocytes upon stimulation with the three mitogens was low during the week preceding parturition with the lowest value on the day before calving. The response of blood lymphocytes returned to a higher level the second week after calving while that of milk lymphocytes remained at a low level during the first and the second postpartum weeks. 相似文献
19.
2018-2019年对4C膏剂、4C液剂、2C、3C、诱虫颗粒、CME共6种实蝇诱剂进行了田间引诱效果评价。结果表明：对橘小实蝇引诱持效期最长是CME和2C,2年平均91d;其次3C和诱虫颗粒,平均87.5d,第三是4C膏剂(平均71d),最短是4C液剂(平均61.5d);诱虫量最高是CME,2年总诱虫量达到3644头,其次是诱虫颗粒、1824头,其他依次是4C液剂(91头)、2C(82头)、3C(76头)和4C膏剂(50头);杀雌率最高是3C、达到57.89%,其次是4C膏剂(56%)、2C(47.56%)和4C液剂(43.95%),CME和诱虫颗粒杀雌率最低,分别只有0.6%和0.03%,差异显著。对瓜实蝇(含南瓜实蝇、下同)引诱持效期最长是4C膏剂、4C液剂、2C和3C,2年平均91d;其次诱虫颗粒(平均79.5d),CME2年没有诱到瓜实蝇;诱虫量最高是3C ,2年总诱虫量达到977头;其次是4C液剂(878头)、4C膏剂(856头)和2C(495头),诱虫颗粒诱虫量较少,只有69头,CME诱虫量为0,对瓜实蝇没有引诱作用;杀雌率最高是4C膏剂、达到32.71%,其次是诱虫颗粒(28.98%)、4C液剂(27.33%)、2C(19.59%)和3C(15.05%),差异显著。 相似文献
20.
I. Srugo O. Chai D. Yaakov L. Sharon M. H. Shamir 《The Journal of small animal practice》2010,51(8):447-450
Thoracolumbar disc herniation was diagnosed in a two-year-old ferret using a myelogram followed by a computed tomography scan. The ferret was paraplegic with no control over urination and defecation. Conservative treatment that included cage rest and passive range of motion exercises for three weeks followed by extensive physiotherapy and hydrotherapy resulted in full recovery two months after the onset of treatment. Although intervertebral disc disease has been reported previously in four ferrets, this is the first report in which a postmyelogram computed tomography was used to demonstrate the herniated disc, and physiotherapy was used as principal treatment modality. 相似文献