苦肚子草治疗仔猪腹泻效果好

仔猪腹泻在早期断奶仔猪最为常见，断奶后头7 d腹泻率为0.6%，8～13 d为32%，14～17 d增到41.4%，到22～28 d降为8.4%。研究表明，仔猪腹泻珠原发性原因不是大肠杆菌，而是由于断奶应激造成肠道损伤。如果腹泻未得到及时控制，可诱发大肠杆菌的大量繁殖，使腹泻加剧，甚至死亡，造成较大经济损失。经在我乡罗家庄村某猪厂多年的实践，用苦肚子草治疗仔猪腹泻，收到了理想的效果，治愈率达90%以上。     

早期断奶仔猪的生理特点及营养调控措施

在现代化养猪生产中，国内规模化猪场已逐步采用仔猪超早期断奶（SEW）技术，有的甚至提前至10日龄。但仔猪早期断奶常出现腹泻、采食量下降、生长缓慢和免疫力降低等早期断奶综合症。其中腹泻是最常见的也是对仔猪危害最大的问题。据报道，断奶后8～13d，仔猪腹泻率高达32％。14～17d增至41．4％，此后降，到22～28d降到8．4％，断奶后仔猪死亡率高达20％～30％（杨雪峰，2004）。如何降低断奶仔猪腹泻成为当前养猪业迫切需要解决的问题，本文介绍了早期断奶仔猪的生理特点及降低仔猪腹泻的营养调控措施。[第一段]     

断奶仔猪腹泻的原因及防治

当前,仔猪早期断奶后发生腹泻已经成为养猪业常见问题之一,断奶仔猪腹泻是各种因素导致的,若治疗不及时,则严重影响仔猪的生长。本文首先对断奶仔猪发生腹泻的主要原因进行了分析,然后针对这些因素提出了防治措施。     

断奶仔猪腹泻的防治技术

断奶仔猪腹泻(PWD)是现代养猪生产中最普遍的一种疾病,尤其在早期断奶时更为常见,多发生于断奶后2～10d,是集约化养猪生产中比较棘手的问题,给养猪业造成很大的经济损失。从流行性腹泻、传染性胃肠炎和轮状病毒感染三种情况阐述了断奶仔猪腹泻,为广大养殖户更好的预防断奶仔猪的腹泻提供参考依据。     

断奶仔猪患腹泻综合症的原因分析和防治措施

在养猪业的生产实践中 ,断奶仔猪腹泻综合症的发病率高达 40 %～ 5 0 %,死亡率达 10 %～ 2 0 %,并且患病猪生长发育缓慢 ,饲料利用率低 ,严重者易形成僵猪 ,给养猪业造成了严重的经济损失及危害 ,为了有效地预防和减少断奶仔猪发生腹泻综合症 ,对发生腹泻的原因进行仔细分析 ,采取有针对性的综合措施来提高养猪业的经济效益。1　病因的分析引起断奶仔猪腹泻的病因很多 ,但主要还是饲养管理不当 ,断奶应激 ,卫生防疫制度不严 ,环境条件恶劣。1.1　饲养管理不当1.1.1　哺乳期仔猪的各种饲养管理工作不当 ,使仔猪的断奶体质量过低 ,体质不良 ,…     

断奶仔猪腹泻及其防治

仔猪断奶后腹泻,又称大肠杆菌性肠炎、断奶仔猪性肠炎。本病是早期断奶仔猪生长受阻和死亡率高的重要原因。 目前许多母猪养殖场或专业大户为了提高母猪的生产效益(年产仔猪窝数及仔猪头数)和降低成本,将过去传统仔猪60日龄断奶提前到28～35日龄断奶。断奶仔猪腹泻问题已成为影响养猪业利润的一大难题。     

断奶仔猪腹泻的原因分析及综合防治措施

腹泻通常发生在仔猪断奶后2星期内,造成的仔猪死亡率可达10%～20%。若发生腹泻,则死亡率在40%以上。腹泻是对早期断奶仔猪危害性较大的断奶后应激综合征。     

仔猪腹泻的原因及防治

仔猪腹泻一直以来是养猪业非常头疼的一个问题,也是制约养猪业发展的一个瓶颈．据涮查．断奶仔猪腹泻率在20％～30％左右．一般情况下．断奶后3～5d的腹泻率为0．6％;而8～13d腹泻就变得严重．腹泻率达32％左右。     

牛至油对吮乳仔猪生长性能影响

仔猪腹泻是集约化养猪生产条件下的一种典型的多因素性疾病,该病是目前最严重的仔猪疾病之一,也是引起仔猪死亡的重要原因.据调查,仔猪因腹泻死亡占仔猪死亡总数的39.8%.而腹泻又主要集中在仔猪的三个年龄段,即出生后1～3日龄、7～14日龄和刚断奶后的仔猪.据报道,即使在养猪业较发达的国家,如美国仔猪断奶前死亡率也占15.5%,荷兰占11.5%～14.2%.故在吮乳仔猪早期补料的日粮中,通过添加某些天然植物抗生素抑制吮乳仔猪的肠道有害菌群,提高其自身免疫能力,已成为养猪业生产的一项重要课题.     

早期断奶仔猪腹泻的综合防治技术

随着人们养猪技术水平不断提高,仔猪的断奶日龄由过去的60日龄提前到21～28日龄。但不当的早期断奶或早期断奶后饲养管理跟不上,都会给养猪生产带来一系列的不良影响。断奶仔猪的腹泻一般发生在断奶后的3～10d,第7d达到高峰,一般形成粥样或水样腹泻,内夹杂未消化的食物,如发现和治疗不及时,很快就会因脱水衰竭而死亡。据调查,断奶仔猪的腹泻问题在农村相当普遍,腹泻率一般在20%～30%左右,死亡率在2%～4%左右。而在有些猪场,     

中国饲料工业协会第五届理事会顾问、会长、常务副会长、副会长、秘书长、副秘书长、常务理事、理事名单

顾问刘中一张德邻宋瑞祥聂振邦张子仪戎易王维四会长白美清国务院原副秘书长、第四届理事会会长常务副会长(8人,以姓氏笔划为序)刘永好新希望集团董事长、第四届理事会副会长刘汉元通威股份有限公司董事长、第四届理事会副会长陈丹广东恒兴集团股份有限公司董事长、第四届理事会副会长张延喜农业部原副部长、第四届理事会副会长吴明夏湖南正虹科技发展股份有限公司董事长、第四届理事会副会长陶一山唐人神集团股份有限公司董事长、第四届理事会副会长温鹏程广东温氏食品集团有限公司董事长、第四届理事会副会长谭竹洲原化学工业部副部长、第…     

Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog

Progesterone levels in peripheral blood of dogs were analysed during the cycle in which hysterectomy (n = 5) or sham surgery (n = 3) was performed as well as during the cycle of dogs (n = 5) hysterectomized at least one year prior to this study; the data were compared with the findings in control dogs (n = 3). The averages of the duration of the luteal period observed in the three experimental groups were not significantly different from those of control dogs. Immediately after surgery, the progesterone level decreased from 25 to 50% of the presurgical level, but returned to presurgical level in about four days. Prolactin levels were elevated for about 30 h after surgery. Nevertheless, the averages of the mean prolactin levels for each animal during the luteal period of the experimental groups were not significantly different from those of control dogs. It is concluded that in the dog, the uterus is not involved in the lifespan of the cyclic corpus luteum.     

The influence of the width of the saddle tree on the forces and the pressure distribution under the saddle

As there is no statistical evidence that saddle fit influences the load exerted on a horse's back, this study was performed to assess the hypothesis that the width of the tree significantly alters the pressure distribution on the back beneath the saddle. Nineteen sound horses were ridden at walk and trot on a treadmill with three saddles differing only in tree width. Kinetic data were recorded by a sensor mat. A minimum of 14 motion cycles were used in each trial. The saddles were classified into four groups depending on fit. For each horse, the saddle with the lowest overall force (LOF) was determined. Saddles were classified as "too-narrow" if they were one size (2 cm) narrower than the LOF saddle, and "too-wide" if they were one size (2 cm) wider than the LOF saddle. Saddles two sizes wider than LOF saddles were classified as "very-wide". In the group of narrow saddles, the pressure in the caudal third (walk 0.63 N/cm(2)+/-0.10; trot 1.08 N/cm(2)+/-0.26) was significantly higher compared to the LOF saddles (walk 0.50 N/cm(2)+/-0.09; trot 0.86 N/cm(2)+/-0.28). In the middle transversal third, the pressure of the wide saddles (walk 0.73 N/cm(2)+/-0.06; trot 1.52 N/cm(2)+/-0.19) and very-wide saddles (walk 0.77 N/cm(2)+/-0.06; trot 1.57 N/cm(2)+/-0.19) was significantly higher compared to LOF saddles (walk 0.65 N/cm(2)+/-0.10/ 0.63 N/cm(2)+/-0.11; trot 1.33 N/cm(2)+/-0.22/1.27 N/cm(2)+/-0.20). This study demonstrates that the load under poorly fitting saddles is distributed over a smaller area than under properly fitting saddles, leading to potentially harmful pressures peaks.     

浅谈对症用药

对症用药就是通过对患病信鸽的症状进行诊断,进而确定病属,选择药物及如何用药的方法。     

军犬鉴别中的嗅源培养和易出现的问题及对策

嗅源是军犬嗅觉作业训练的依据.军犬鉴别中嗅源能力的培养在整个鉴别训练中占有重要地位,关系到鉴别训练的成败和鉴别能力的提高.所以,军犬在嗅认嗅源时必须按照训犬员的指令充分、细致地感受嗅源气味,并且对嗅源气味产生兴奋反应.如何培养军犬充分嗅认嗅源以及及时解决嗅认过程中出现的问题,成为我们进行鉴别训练的关键.……