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1雪峰绿壳蛋鸡的特征1·1体型外貌雪峰绿壳蛋鸡体型中等，体质结实；片羽，黑色富光泽，紧贴体包；身躯稍长，乌皮、乌肉、乌骨、乌喙；单冠具6～8齿，呈现紫绿色或棕色；肌胃、脾、心、肠系膜等内脏呈紫黑色．1·2生长速度用配合饲料喂养雪峰绿完蛋鸡60～75日龄体重1·0～1·4kg，自然放养120～150日龄1·0～1·3kg．1·3繁殖力150～160日龄开产，年产蛋120～150枚，公鸡最早106天开啼，平均为153天，公母比例为1：10～14．2雪峰绿壳鸡蛋的药用价值雪峰绿完蛋的价格比普通蛋高10％～20％，不但营养丰富，香味独特，更重要的是具有较高的药… 相似文献
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研究旨在分析地方特色蛋鸡与高产蛋鸡卵巢及卵泡发育规律，为地方鸡种质资源开发利用提供参考依据。以神丹6号绿壳蛋鸡和海兰褐蛋鸡为素材，分析13～60周龄卵巢及各级卵泡发育变化规律。13～28周龄每周、30～40周龄每两周、40～60周龄每4周每个鸡种随机选择12只左右母鸡进行屠宰，分别统计等级卵泡（直径>8 mm）、小黄卵泡（直径4～8 mm）和大白卵泡（直径2～4 mm）的数量和重量，并将上述卵泡去除后对卵巢基部进行称重作为卵巢重。结果显示：两个鸡种在开产前卵巢和大白卵泡发育缓慢，而开产后迅速发育，神丹6号绿壳蛋鸡在16周龄时有小黄卵泡发育，海兰褐蛋鸡在17周龄时有小黄卵泡发育，整体上海兰褐蛋鸡卵巢发育的整齐度优于神丹6号绿壳蛋鸡。产蛋率50%至60周龄期间神丹6号绿壳蛋鸡和海兰褐蛋鸡卵巢重分别为4.33 g和5.15 g，小黄卵泡数分别为13.2个和15.2个，等级卵泡数分别4.9个和6.0个，上述指标神丹6号绿壳蛋鸡均显著低于海兰褐蛋鸡（P<0.05），而神丹6号绿壳蛋鸡大白卵泡数为19.9个，显著高于海兰褐蛋鸡的17.7个（P<0.05）。结果表明：卵巢重、小黄卵... 相似文献
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音乐刺激对断奶仔猪行为和生长的影响 总被引：1，自引：0，他引：1
本试验采用随机分组设计，选用４５日龄断奶的长白仔猪３２头。随机分成对照组和试验组，试验组每天接受３小时的音乐刺激，进行对比试验。经２５天试验表明，试验组在４天后就能适应音乐刺激，平均卧息时间较对照提高７．７４％，活动时间下降５．２６％，断奶应激行为明显省于对照组；同时，平均日增重提高１０．０７％（Ｐ〉０．０５），饲料利用率提高５．７６％。 相似文献
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圈养麇鹿冬季昼间行为及活动规律 总被引：1，自引：0，他引：1
2008年11-12月在济南动物园,采用瞬时扫描取样法、焦点动物取样法和全事件取样法,对9只圈养麋鹿的行为及活动规律进行了研究。结果表明,麇鹿冬季行为时间分配比例依次为卧息（36．45％±7．34％）、取食（24．79％±8．11％）、运动（18．67％±5．93％）、反刍（17．50％±5．52％）、其他（2．59％±0．87％）。在冬季麋鹿的卧息在1d内有1个高峰期（12：30～14：30）,取食在1d中有2个高峰期（8：30～9：30和17：30～18：30）,占糜鹿各种行为比例最多的2种行为在1d中是交替出现的,运动在10：30和15：30各有1个较为明显的高峰期,反刍在1d中有1个高峰期（9：30～11：30）,其他行为在1d中发生的较为随机,没有明显的高峰期。年龄因素对糜鹿冬季昼间的卧息、取食和运动行为的影响差异极显著（P〈0．01）,对其他行为影响显著（P〈0．05）,对反刍行为影响不显著（P〉0．05）;性别因素对糜鹿冬季昼间的行为影响不显著（P〉0．05）。 相似文献
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矮小型褐壳蛋鸡产蛋时间和间隔的统计分析 总被引：4，自引：0，他引：4
本文对８８０只纯系矮小型褐壳蛋鸡的产蛋时间进行了连续５天的观察,分析结果表明,矮小型褐壳蛋鸡的产蛋时间集中在上午１２时以前,并以９：００～１０：００期间产蛋最为密集,占全天产蛋的１９．５％。连产内第一枚蛋产出时间集中在上午（８９：３３％）,以７：００～９：００间产蛋最多（４９．７１％）;而最后一枚蛋产出时间集中在下午（７１．２０％）,以２：００～４：００间产蛋最多（３６．５８％）。矮小型褐壳蛋鸡连产内产蛋间隔范围为２２．３５～３１．１５小时,每枚蛋平均间隔高峰在２４小时（３６．０％）,群体平均产蛋间隔为２５．０８小时。相邻连产间间隔时间的变异范围很大,最短为３８．０小时,最长达１００．４５小时。 相似文献
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1品种介绍
绿壳蛋鸡因产绿壳蛋而得名,其显著特征为“五黑一绿”,乌皮、乌骨、乌肉、乌内脏、趾均为黑色。纯种黑羽绿壳蛋鸡重点突出全黑特征,即黑羽、乌皮、乌骨、乌冠、乌肉,公、母鸡均为单冠、黑色,胫青色。母鸡开产日龄160-165天,开产体重1.05-1.10千克,300日龄蛋重45克,500日龄入舍母鸡产蛋量145-150枚;成年公鸡体重1.65千克,母鸡1.30千克。大群饲养的商品代,绿壳蛋比率为90%左右。该品种经过5年4个世代的选育,体形外貌一致,纯度较高,其父系公鸡常用来和蛋用型母鸡杂交生产出高产的绿蛋鸡商品代母鸡,我国多数场家的绿壳蛋鸡品系中均含有该鸡的血缘。但该品种抱窝性较强（15%左右）,因而产蛋率较低。该鸡种抗病力强,适应性广,喜食青草菜叶,饲养管理、防疫灭病和普通家鸡没有区别。绿壳蛋鸡体形较小,结实紧凑,行动敏捷,匀称秀丽,性成熟较早,产蛋量较高。成年公鸡体重3.2-4.5千克,母鸡体重1.9-3.1千克,年产蛋160-180枚。该鸡种具有明显高于普通家鸡抗御环境变化的能力,南北均可养殖。 相似文献
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dw基因对褐壳蛋鸡生产性能影响的研究 总被引：5，自引：3，他引：2
通过对矮小褐壳蛋鸡（带ｄｗ基因）与其正常型同胞母鸡生产性能的比较，研究ｄｗ基因对褐壳蛋鸡的是。ｄｗ基因使褐壳蛋鸡的体重降低２２－２７％，开产日龄提前３．３天，饲料报酬提高２２％，只日耗料减少３０％，蛋重小３％，除产蛋数外，各项指标差异均达到显著或极显著水平。同期测定还有“农大褐”Ｄ系母鸡。矮小型褐壳蛋鸡的产蛋水平由于未经选择，目前低于高产蛋鸡“农大褐”，但饲料效率比农大褐高１６％，综合效益较高。 相似文献
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本文主要研究了散养条件下北京油鸡整个产蛋期间(19～65周)的就巢产蛋行为发生及其特性表现.选用600只18周龄的北京油鸡蛋鸡,为便于行为观察记录随机分为6组,每组单独观察.19～65周龄期间每周末观察记录各组鸡只就巢、产蛋行为发生情况,特别是37～55周龄期间每周选1d由两位专门人员进舍观察记录3次(10:00～11:00、16:00～17:00、20:00～21:00),每组10分钟.结果表明:北京油鸡预产期间(19～21周),产蛋行为表现少(＜1％),此时鸡只无就巢行为发生.产蛋前期(22～28周),鸡只产蛋行为随周龄逐渐增加,尤其是29周之后产蛋行为表现频繁时(58.13％),就巢行为也开始增加并频繁发生(9.47％);而产蛋后期(44周后)产蛋行为显著降低时(46.18％),就巢行为却并没有减少很多(8.29％).37～55周期间油鸡就巢两次的比率占总体典型就巢行为发生的54.7％.平均就巢持续时间,就巢一次的要大于就巢两次的(20.4 d＞17.8 d),典型就巢行为发生率小于非典型就巢行为发生率(9.5％＜12.7％).最后总结了北京油鸡的就巢产蛋行为特性:主要表现为具有阶段性、明显的目的性,记忆性,个体差异性,对声、光的敏感性,以及发生的不同步性. 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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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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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