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为研究饲料油菜发酵全混合日粮(FTMR)的羔羊强度育肥效果,本试验选取2.5月龄的湖羊40只,随机分为2组,每组20只,公母各半。试验组饲喂以油菜为主原料配制的FTMR日粮,对照组饲喂以青贮玉米为主原料配制的TMR日粮。预试期15d后称初试体重,正式期90d,每15d称重,记录采食量,计算平均日增重。结果表明:湖羊母羊采食量、体重和日增重在两种日粮间无显著差异(P>0.05);而试验组公羊采食量显著高于对照组(P<0.05),75d后体重和日增重都显著高于对照组(P<0.05)。根据日增重、采食量、饲料成本、活羊价格计算育肥收益,油菜FTMR日粮育肥湖羊公羊和母羊的收益都高于对照组。因此,饲料油菜FTMR日粮用于羔羊强度育肥效果较好。 相似文献
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秸秆颗粒饲料对育成羊饲喂效果的研究 《畜牧与饲料科学》2015,36(10):41-41
为评价秸秆颗粒饲料对育成山羊的饲喂效果,选择徐淮山羊育成羊60只,按体重随机分成3组,即对照组、试验1组、试验2组,各组羊只分别喂饲不同配比的秸秆颗粒饲料,试验期60 d。比较各组羊只在育肥期内的日采食量和日增重,根据增重情况及饲料成本,比较各组羊只育肥的经济效益。结果表明,试验1组平均日增重比对照组提高12.50%,差异显著(P<0.05),且显著高于试验2组(P<0.05);试验2组平均日增重比对照组低1.34%,差异不显著(P>0.05);各组羊只的日采食量无显著差异(P>0.05)。试验1、2组育肥的经济收入分别比对照组增加33.60元、减少3.60元,从经济效益来看试验1组饲喂效果最佳。 相似文献
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试验旨在研究发酵草药精饲料对哺乳期羔羊生长性能及经济效益的影响。选取体重相近、健康新生羔羊50只,随机分为2组,每组25个重复,每个重复1只羊。对照组羔羊饲喂基础饲粮;试验组在基础饲粮中添加5%发酵草药。试验期62 d。结果表明,试验组羔羊末重、总增重、平均日增重均显著高于对照组(P<0.05);试验组羔羊精料总采食量、花生秧总采食量、全混合日粮(TMR)总采食量均高于对照组,且羔羊平均日采食量整体呈上升的趋势;试验组羔羊TMR/增重显著高于对照组(P<0.05),精料/增重、花生秧/增重、料重比与对照组相比差异不显著(P>0.05)。试验组总投入和增重收入均高于对照组。试验组每只羔羊较对照组的利润增加了354.9元。研究表明,羔羊哺乳期添加5%发酵草药,可明显提高羔羊哺乳期增重与经济效益。 相似文献
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不同蛋白水平日粮补饲羔羊的效果研究 总被引：3，自引：0，他引：3
按同质原则将90只无角道塞特(♂)与小尾寒羊(♀)的杂交一代羔羊(30日龄)分为3个处理组,每个处理组下设3个重复,每组10只羔羊,公母各半。采用单因子设计,研究19%,17%,15%蛋白水平日粮补饲羔羊的效果。试验结果表明:3个处理组羔羊日增重分别为291、319、258g/d,第2、3组间日增重差异显著(P<0.05),2组日采食量显著高于3组(P<0.05),1组料肉比优于3组(P<0.05)。试验结果发现,19%和17%蛋白水平日粮适于羔羊补饲,其中以17%水平最好。 相似文献
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选择90只无角道塞特(♂)与小尾寒羊(♀)的杂交一代羔羊(30日龄)随机分为3组,每组10只羔羊,公母各半.采用单因子设计,研究19%,17%,15%蛋白水平日粮补饲羔羊的效果.试验结果表明三组羔羊日增重分别为291 g/d、 319 g/d、 258 g/d,第2组、第3组间日增重差异显著(P<0.05),第2组日采食量显著高于第3组 (P<0.05),第1组料肉比优于第3组(P<0.05).19%和17%蛋白水平日粮适于羔羊补饲,其中以17%水平最好. 相似文献
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甜菜碱对热应激肉鸡生产性能的影响 总被引：1，自引：0，他引：1
选用1日龄的肉仔鸡(麻鸡与隐性白的杂交一代)120只在常规状态下饲养至17日龄后进行试验。在试验期内,肉鸡被随机分成3组,并饲养在热应激环境中,对照组喂基础日粮,第 组、 组分别在基础日粮中添加0.1%、0.3%的甜菜碱。试验期内,定期测定采食量,增重等生产性能指标,81日龄时测定屠宰率。结果表明:在17～57日龄,与对照组相比较,第 组公鸡平均增重提高了278.9克/只,母鸡平均增重提高了218.7克/只,差异极显著(P<0.01)。与对照组相比较,第 组公鸡平均增重提高了0.2克/只、母鸡平均增重提高了17.6克/只,差异不显著(P>0.05);在采食量方面,对照组、第 组、第 组分别是:公鸡61.05克/只·日、66.12克/只·日、65.84克/只·日,母鸡46.68克/只·日、54.97克/只·日、53.59克/(只·日),三组差异不显著;与对照组相比较,第 组公鸡饲料转化率提高了0.5,差异显著(P<0.05);第 组母鸡饲料转化率提高了0.19,差异显著(P<0.05);与对照组相比较,第 组公鸡饲料转化率减少了0.22,差异显著(P<0.05);第 组母鸡饲料转化率减少了0.26,差异显著(P<0.05);对照组、第 组、第 组肉鸡的屠宰率分别是公鸡91.15%、90.90%、91.05%,母鸡91.70%、91.55%、91.85%,各组的屠宰率差异不显著(P>0.05)。结果证明,适量甜菜碱可以缓解热应激对肉鸡的不 相似文献
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日粮添加γ—氨基丁酸对育肥猪生长和饲料利用的影响 总被引：15，自引：0，他引：15
120头杜×长·梅三元杂交猪均分为4组,分别在基础日粮中添加0(对照)、10、20、40mg·kg-1GABA,经30d试验结果表明:10、20mg·kg-1GABA组日增重分别比对照组提高11.39%、9.49%,差异显著(P<0.05);采食量提高7.82%和9.47%(P<0.05);40mg·kg-1GABA组的采食量下降1.23%,日增重降低50g。10mg·kg-1组的血清尿素氮变化与对照组差异不显著(P>0.05),而40mg·kg-1组极显著地高于对照组(P<0.01)。结果显示在育肥猪日粮中GABA添加10mg·kg-1能提高日增重、采食量,且不降低饲料蛋白质的利用率。 相似文献
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饲料中添加益菌肽对羔羊生产性能和生理生化指标的影响 总被引：1，自引：0，他引：1
《中国草食动物科学》2016,(5)
为揭示益菌肽对肉羊生产性能和血液生理生化指标的影响,将40只3月龄杜寒(杜泊羊×小尾寒羊)杂种断奶公羔随机分为4组:Ⅰ组饲喂正大浓缩料+益菌肽;Ⅱ组饲喂自配料+益菌肽;Ⅲ组饲喂正大浓缩料;Ⅳ组饲喂自配料。育肥试验为期60 d,测定各组采食量和日增重指标变化。结果表明:添加益菌肽组(第Ⅰ组和第Ⅱ组)总增重和日增重均显著高于对照组(第Ⅲ组和第Ⅳ组)(P0.05),添加益菌肽组试验期总精料和平均日耗精料低于对照组,添加益菌肽组经济效益优于对照组。添加益菌肽组羔羊血清尿素氮(BUN)和甘油三酯(TG)有降低的趋势,葡萄糖(GLU)有升高的趋势。说明添加益菌肽能够显著提高育肥羔羊的饲料转化率和日增重,增加经济效益。 相似文献
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LOUISE L. SOUTHWOOD BVSc PhD Diplomate ACVS Diplomate ACVECC JENNIFER COHEN VMD EVITA BUSSCHERS DVM PERRY HABECKER VMD Diplomate ACVP 《Veterinary surgery : VS》2010,39(1):101-106
Objective— To report a case of multiple acquired jejunal pseudodiverticula managed successfully by resection and jejunojejunostomy.
Study Design— Clinical report.
Animals— Arabian filly.
Methods— The filly was referred for signs of acute colic of several hours duration and had a 2-week history of inappetence and weight loss. Three meters of thickened, edematous, and dilated jejunum removed during exploratory celiotomy had an intussusception and numerous diverticula; jejunojejunostomy performed. The pathoanatomic diagnosis was proliferative enteropathy with pseudodiverticula formation and jejunal muscular hypertrophy and diverticulosis. The diverticula appeared to be acquired; however, the exact cause was not determined.
Results— There were no postoperative gastrointestinal complications and 1 year later, the filly was doing well.
Conclusion— Multiple acquired jejunal pseudodiverticula not associated with classic muscular hypertrophy can occur in young horses. Long-term prognosis seemingly can be excellent after resection and jejunojejunostomy.
Clinical Relevance— Compared with other reports of small intestinal diverticula in horses, this case is unique because it was not congenital or associated with classic muscular hypertrophy. 相似文献
Study Design— Clinical report.
Animals— Arabian filly.
Methods— The filly was referred for signs of acute colic of several hours duration and had a 2-week history of inappetence and weight loss. Three meters of thickened, edematous, and dilated jejunum removed during exploratory celiotomy had an intussusception and numerous diverticula; jejunojejunostomy performed. The pathoanatomic diagnosis was proliferative enteropathy with pseudodiverticula formation and jejunal muscular hypertrophy and diverticulosis. The diverticula appeared to be acquired; however, the exact cause was not determined.
Results— There were no postoperative gastrointestinal complications and 1 year later, the filly was doing well.
Conclusion— Multiple acquired jejunal pseudodiverticula not associated with classic muscular hypertrophy can occur in young horses. Long-term prognosis seemingly can be excellent after resection and jejunojejunostomy.
Clinical Relevance— Compared with other reports of small intestinal diverticula in horses, this case is unique because it was not congenital or associated with classic muscular hypertrophy. 相似文献
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B. M. McCraw 《Canadian journal of veterinary research》1973,37(1):21-24
Naturally occuring outbreaks of Ascaris suum infection in calves have usually beeen found in animals nine to 12 months of age. The circumstances surrounding these outbreaks suggest that yearling calves are either particularly susceptible to a primary exposure to A. suum or react strongly to A. summ after sensitization early in life to this or some related ascarid. To determine the effect of reinfection with A. suum nine to 12 months after varying levels of exposure to this nematode, six calves were inoculated with 200,000 to 9,000,000 eggs. Neither death nor, in general, severe clinical signs resulted from reinfection. All calves were examined 15 days after reinfection with pathological changes noted only in the lungs and consisting of emphysema, alveolar wall thickening as well as accumulations of fibrin, eosinophils and hemorrhage in the lumina of alveoli. The findings suggested that exposure to A. suum early in life is not a factor in the development of disease in calves infected at one year of age. It was also found that the eosinophilia that develops following a primary infection with A. suum evidently persists for at least one year. 相似文献
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In clinics, temperature is used as an indicator of health. Mostly rectal temperature is recorded, requiring handling and time. Temperature-sensitive identification microchips could be an alternative. Foals (26 males and 17 females), 4–12 months old, were housed in stalls over two winters (December–February). They were equipped with an identification and temperature sensor microchip implanted in the neckline. Temperature was recorded using an antenna located near the drinking trough. Animals were fed concentrated feed and forage twice daily, with free access to water. Rectal temperatures (79 measurements) were recorded simultaneously in 26 animals. Data were analyzed with a linear mixed model, using natural cubic splines for the mean curve and a random horse effect. All animals remained healthy throughout the study. More than 100,000 recordings were obtained. Mean temperature for all individuals at all times was 37.5 ± 0.1°C. Time of the day affected temperature with a daily amplitude of 0.96°C (P < .001). Lowest temperatures were observed before dawn, the acrophase occurring around 18:00, with a smaller increase around midday. Mean temperature was 0.26°C higher in males (P < .05). It was also 0.1°C higher in light (<200 kg) compared with heavier foals (P < .001). Temperature decreased with increasing daylight (−0.35°C over the study period, P < .001). Microchip and rectal temperatures remained within normal limits and were significantly correlated (R2 = 0.16, P < .001). This noninvasive tool does not require extra-handling and will allow a better monitoring of normal body temperature values taking into consideration time of the day, meal time, and sex. 相似文献
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《Strength and Conditioning Journal》2008,61(2):204-210
This 9-yr study tested steer gains, residual aboveground biomass (AGB) in mid-July and early October, and economic returns and risk for tallgrass prairie grazed annually under season-long stocking (SLS) at 1.62 ha · steer−1 until early October or intensive early stocking (IES) at 0.81 ha · steer−1 until mid-July compared to a composite grazing system. The three-pasture, three-herd “IES+ System” is a 3-yr fixed sequence of SLS, IES, and IES (0.81 ha · steer−1) plus late-season grazing (LSG; 1.62 ha · steer−1) until early October (IES/LSG). All grazing treatments began in late April. Average gains per steer for SLS and SLS in the IES+ System did not differ, but were significantly less than gains for steers that grazed the entire season under IES/LSG. Gains per steer in mid-July under IES alone or in combination with LSG were similar to the same repeated grazing treatments, but were significantly less than those for steers grazed season-long. Gains per hectare under SLS did not differ, but were significantly less than those for IES treatments and the IES+ System. Gain per hectare in July was similar for IES repeated annually and IES/LSG, but there was greater gain per hectare for IES-treated pastures rotated within the system. Residual grass and total aboveground biomass (AGB) in mid-July did not vary among years and was generally greater on SLS than IES. In early October, grass AGB was similar for all treatments except IES/LSG, which had less residual AGB. When pasture rent was charged per head, the IES+ System increased the 20-yr mean return per hectare by $5.98 compared to repeated use of IES, and $8.52 compared to using only SLS. Measures of economic risk were generally intermediate for the IES+ system compared to IES, which consistently had the highest risk, and SLS. 相似文献
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Bacillary Hemoglobinuria Associated with Hepatic Necrobacillosis in a Yearling Feedlot Heifer 总被引：1，自引：1，他引：0 
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下载免费PDF全文 E. D. Janzen J. P. Orr A. D. Osborne 《The Canadian veterinary journal. La revue veterinaire canadienne》1981,22(12):393-394
Bacillary hemoglobinuria was diagnosed in a yearling heifer in a large western Canadian feedlot. The animal had come through a terminal market in another province and arrived in the feedlot three weeks previously. Predisposing hepatic injury may have been caused by Fusobacterium infection secondary to the rumenitis of grain overload. 相似文献
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This study aimed to investigate the prevalence of juvenile osteochondral conditions (JOCCs) in yearling Thoroughbred (TB) racehorses in Southern Brazil, as well as to examine the same animals studied as weanlings by Bastos et al. (2017) and compare the radiographic findings for the two ages. Radiographs of 76 male and female TB yearlings from Paraná State, Southern Brazil, were investigated. The proximal interphalangeal, metacarpophalangeal/metatarsophalangeal (MC/MT), tarsal, and femorotibial (FT) joints were evaluated using 24 radiographic projections. The evaluation consisted of a severity index (rated as 0, 1, 2, 4, or 8), the sum of which resulted in an osteoarticular status (OAS) of good, intermediate, or poor for each animal. Radiographs of 92% of the investigated animals presented at least one finding consistent with JOCCs. The most affected region was the tarsal joint (72.9%), followed by the FT (50%), MT (25%), and MC (23%) joints. Thirty-three (43.4%) horses presented a decline in their OAS, whereas nine (11.8%) presented an improvement from the weanling to yearling age. The radiographic findings suggest that JOCCs are frequent in TB yearlings, but the meaning and relevance of these radiographic findings require further study. 相似文献