饲料的不同形态与状态对早期断奶仔猪生产性能的影响     

唐仁勇  陈代文  张克英  余冰  郭秀兰 《中国畜牧杂志》2007,43(3):55-58

试验采用2×2因子设计,共分4个处理,即粉料和颗粒料2种类型,每种类型2种状态(液态和固态)。试验选用96头(21±1)d断奶的三元(D×L×Y)杂交仔猪,试验期21 d。其中液态料按12∶.5的料水比进行浸泡。试验期间考察仔猪的耗料量、增重、腹泻情况、粪便pH值及木糖吸收情况等,并测定饲料的pH值和淀粉糊化度。结果表明:①与粉料组相比,颗粒料组仔猪平均日增重提高了9.7%(P<0.05),平均日采食量提高了13.5%(P<0.10)。②颗粒料的淀粉糊化度比粉料高15%-16%。③液态组仔猪全期平均日采食量和日增重均高于固态组(P<0.05),分别提高了10.3%和12.9%。④液态料组仔猪血清木糖含量比固态料组高52%(P<0.05),且腹泻程度显著(P<0.05)降低。  相似文献   

四君子汤对仔猪胸腺及脾脏生长激素受体mRNA表达的影响   总被引：1，自引：0，他引：1  

刘莉  郝福星  冒海银 《动物医学进展》2009,30(6)

选用90头新生"杜×长×大"三元杂交仔猪,随机分为3组,每组30头,分别为中药I组(中药添加剂量10 g/kg),中药Ⅱ组(中药添加剂量20 g/kg),对照组(基础日粮组),试验期为31 d.45日龄时每窝随机选取6头仔猪屠宰后,分别采集胸腺和脾脏.采用反转录聚合酶链式反应(RT-PCR)方法,定量分析仔猪胸腺及脾脏中生长激素受体(GHR)mRNA的相对丰度.结果显示,与对照组相比较,2种剂量中药组的仔猪胸腺及脾脏中生长激素受体mRNA的含量均不同程度地提高,中药Ⅱ组效果更为显著.  相似文献   

活性酵母对猪生长性能的影响试验     

郭雁君  徐来仁 《广西农业科学》2007,38(1):92-93

选取60头杜大长仔猪进行活性酵母菌对仔猪生长性能的影响试验,结果显示,饲料中添加活性酵母可以提高猪只的日增重、料肉比,在保育期添加活性酵母菌可以显著控制仔猪腹泻的发生,提高T淋巴细胞转化率,表明添加活性酵母菌在动物饲养过程中有良好的效果。  相似文献   

The Studies on the Grunting of Sows during Nursing and the Sucking Behaviour of Piglets     

LIJiang－hong  BAOJun 《东北农业大学学报(英文版)》2000,7(2):87-100

Two experiments were carried out to study the grunting of sows during nursing and the sucking be-haviour of piglets. In experimental I,six Yorkshire sows and their litters were observed and managed in farrowing crates.In experimental Ⅱ,six Harbin White sows and their litters were selected and housed in farrowing pens.The behaviours and activities of the sows during nursing and the actities of piglest during sucking were recorded with a portable video camera (PanasonicNV-VX22EN)The results showed that the characteristic patterns of grunting by the sows consist of an initial period of rhythmic grunting at a fairly constant rate and followesd by a period of more rapid grunting,and then a decline in grunting rate toward the completion of nursing.The pattern of vocalization showed by the mothers bears a reliable synchronization to the sucking behaviour of the piglets.The rate of grunting varied little during jostling for teat and nosing the udder.The beginning of slow sucking usually occurred during of just after the increase in grunt rate.The rapid sucking began 15-25seconds after the period of most rapid grunting,fol-lowingthe decrease of grunt rate.afterwards the nursing ended.There were individualities found in sows‘grunting patterns.It is found that vocalizations attracted the piglets to the sows and synchronized sucking activities of piglets,but the results indicated that the premassaging time and numbers of piglets enagaing massaging influ-enced the grunting pattern and the onset of the milk ejection.As more piglets were involved the massaging,the higher the grunting rate peak,the faster the milk ejection.  相似文献   

大剂量链霉素治疗仔猪急性支气管肺炎     

李有业 《兽药与饲料添加剂》1999,4(5):13-13

对仔猪急性支气管肺炎，应用链霉素按50－100mg／kg体重的大剂量，两次肌注间隔8－12小时，疗效极佳。尤其是对消除哮喘和恢复异常增多的呼吸次数，效果显著。  相似文献   

多拉菌素注射剂杀灭猪血虱试验   总被引：8，自引：1，他引：7  

周绪正  张继瑜  李金善  李剑勇  徐忠赞 《中国兽药杂志》2004,38(10):39-40

选购自然感染猪血虱的仔猪80头,根据猪血虱感染数量随机分为5组,分别肌肉注射多拉菌素400、300、200 μg/kg体重,皮下注射伊维菌素300 μg/kg体重,肌肉注射生理盐水0.5 mL/头.结果显示,各试验组药物对猪血虱都有明显的驱杀作用,其中多拉菌素高、中剂量组药物残效期达120 d以上.临床推荐剂量为300 μg/kg体重.  相似文献   

Genetic parameters for litter size,piglet growth and sow's early growth and body composition in the Chinese–European line Tai Zumu     

M. Banville  J. Riquet  D. Bahon  M. Sourdioux  L. Canario 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2015,132(4):328-337

Genetics of piglet growth in association with sow's early growth and body composition were estimated in the Tai Zumu line. Piglet and sow's litter growth traits were calculated from individual weights collected at birth and at 3 weeks of age. Sow's litter traits included the number of piglets born alive (NBA), the mean piglet weight (MW) and the standard deviation of weights within the litter (SDW). Sow's early growth was measured by the age at 100 kg (A₁₀₀), and body composition included backfat thickness (BF₁₀₀). A main objective of this study was to estimate separately the direct genetic effect (d) and the maternal genetic effect (m) on piglet weight and daily weight gain during lactation. Variance components were estimated using the restricted maximum likelihood methodology based on animal models. The heritability estimates were 0.19 for NBA, 0.15 and 0.26 for SDW and MW at 3 weeks and 0.42 and 0.70 for A₁₀₀ and BF₁₀₀. The NBA was almost independent from SDW. Conversely, the A₁₀₀ and BF₁₀₀ were correlated unfavourably with SDW (r_g<−0.24, SE<0.12). A stronger selection for litter size should have little effect on litter homogeneity in weights. Selection for lean growth rate tends to favour heterogeneity in weights. The direct effect on piglet weight at birth and daily weight gain accounted for 12% (h² (d) = 0.02) and 50% (h² (d) = 0.11) of the genetic variance, respectively. The association between d and m for piglet weight was not different from zero at birth (r_g = 0.19, SE = 0.27), but a strong antagonism between d and m for daily weight gain from birth to 3 weeks was found (r_g = −0.41, SE = 0.17). Substantial direct and maternal genetic effects influenced piglet growth until weaning in opposite way.  相似文献   

苦豆籽粕-两歧双歧杆菌-唾液乳杆菌合生元对早期断奶仔猪肠黏膜形态的影响     

孙晓磊  王雪飞  杨斌  张童君  刘丹丹  杨英 《兽医大学学报》2014,(2):345-349

为观察苦豆籽粕-两歧双歧杆菌-唾液乳杆菌合生元对早期断奶仔猪不同时期小肠黏膜绒毛长度、隐窝深度和绒腺比的影响,试验选用60头（21±2）日龄体质量相近的杜长大三元杂交断奶仔猪,随机分为4组,每组3个重复,每个重复5头仔猪。试验组在饲喂基础日粮的基础上分别添加0．5％,1．0％,2．0％的合生元,对照组饲喂基础日粮,试验期4周。结果表明,合生元组可显著提高仔猪小肠绒毛的高度,其中2．0％舍生元组效果较好;对小肠黏膜隐窝深度方面的差异不显著;饲喂合生元可以提高小肠黏膜绒腺比,其中以0．5％合生元组和2．0％合生元组效果明显。在本试验饲养方式下,苦豆籽粕一两歧双歧杆菌一唾液乳杆菌合生元可以改善肠道黏膜形态结构,尤以2．0％剂量组效果较好,适宜于生产实践。  相似文献   

仔猪高死亡率腹泻病因探讨     

兰新财  缪雪荣  赵丽丽  谈华松 《中兽医医药杂志》2014,(3):73-75

2010年4月以来,全国各地先后出现高死亡率吮乳仔猪腹泻,以冬春寒冷季节多发、持续时间长、高死亡率为特征,日龄越小死亡率越高,用药物及生物制剂均无法有效控制,给养殖业带来巨大的经济损失。按照流行性腹泻病毒感染、霉菌毒素及中毒等采取相应的防治措施,效果均不明显。按中兽医整体观念、辨证论治,将两方面病因有机结合起来,分析该疾病的病理机制,采用中药复方进行临床验证,取得较好的防治效果,为该病的预防和治疗提供了新的思路与方法。  相似文献   

小肽制品对断奶仔猪生长性能和免疫机能的影响及机理研究   总被引：5，自引：0，他引：5  

王贤勇 《畜禽业》2006,(19):16-18

本研究以杜大长早期断奶仔猪为对象,分2次试验探讨了小肽制品对早期断奶仔猪的添加效果。试验1设计4个小肽制品的添加水平(0‰、2‰、4‰、6‰),探讨其对仔猪生长性能的影响,以此选择最佳添加量。试验2以试验1选出的最佳水平为添加量,研究小肽制品对仔猪生长性能和部分血液生理生化指标的影响,进一步探讨小肽作用的某些机理。试验1结果:添加2‰小肽制品的试验仔猪与对照组相比,日采食量和日增重分别提高了15.5%和17.3%(P<0.05);而随着添加量的增加,试验仔猪的生长性能呈下降趋势。故确定小肽制品的最佳添加量为2‰。试验2结果:以添加2‰小肽制品的日粮饲喂仔猪,试验仔猪的日采食量和日增重分别增加了15.7%(P<0.01)和18.1%(P<0.01),料重比和腹泻率分别减少了2.1%(P<0.05)和54.8%(P<0.05),这与试验1结果基本一致;血清总蛋白浓度和球蛋白浓度分别增加了45.8%(P<0.01)和19.4%(P<0.05),尿素氮浓度减少了39.6%(P<0.05),白球比降低了33.9%(P<0.05),谷草转氨酶、谷丙转氨酶、碱性磷酸酶分别增加了28.2%(P<0.05)、26.6%(P<0.05)和39.9%(P<0.01),乳酸脱氢酶活性降低了22.1%(P<0.05)。以上结果显示,小肽制品能显著提高蛋白质的沉积率,提高断奶仔猪的生长性能,增强其免疫机能。  相似文献