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隨著養殖經驗的積累,人們對仔豬病原性腹瀉有了較多認識,通過疫苗免疫和藥物治療多能解決,但對母源性腹瀉還沒有充分重視。
母源性腹瀉原因可分為:
1.奶(nai)水(shui)中(zhong)母(mu)源(yuan)抗(kang)體(ti)不(bu)足(zu),新(xin)生(sheng)仔(zai)豬(zhu)得(de)不(bu)到(dao)母(mu)源(yuan)免(mian)疫(yi)力(li)保(bao)護(hu),易(yi)出(chu)現(xian)病(bing)原(yuan)性(xing)腹(fu)瀉(xie)。對(dui)仔(zai)豬(zhu)活(huo)命(ming)至(zhi)關(guan)重(zhong)要(yao)的(de)母(mu)源(yuan)抗(kang)體(ti)和(he)免(mian)疫(yi)活(huo)性(xing)細(xi)胞(bao),因(yin)為(wei)不(bu)會(hui)經(jing)胎(tai)盤(pan)傳(chuan)遞(di),仔(zai)豬(zhu)必(bi)須(xu)從(cong)初(chu)乳(ru)中(zhong)獲(huo)取(qu),初(chu)生(sheng)仔(zai)豬(zhu)的(de)腸(chang)壁(bi)具(ju)有(you)獨(du)特(te)的(de)胞(bao)飲(yin)作(zuo)用(yong),可(ke)直(zhi)接(jie)吸(xi)收(shou)和(he)利(li)用(yong)初(chu)乳(ru)中(zhong)的(de)抗(kang)體(ti)及(ji)免(mian)疫(yi)活(huo)性(xing)細(xi)胞(bao),這(zhe)種(zhong)特(te)殊(shu)的(de)吸(xi)收(shou)方(fang)式(shi)僅(jin)存(cun)在(zai)於(yu)出(chu)生(sheng)後(hou)大(da)約(yue)6小時內,所以出生後6小xiao時shi內nei必bi須xu讓rang仔zai豬zhu吃chi上shang初chu乳ru以yi抵di抗kang早zao期qi感gan染ran,防fang止zhi下xia痢li等deng疾ji病bing。而er奶nai水shui中zhong的de抗kang體ti多duo是shi蛋dan白bai,若ruo產chan前qian母mu豬zhu營ying養yang不bu能neng滿man足zu需xu求qiu,體ti內nei免mian疫yi因yin子zi合he成cheng必bi然ran受shou影ying響xiang。所suo以yi產chan前qian一yi個ge月yue母mu豬zhu的de氨an基ji酸suan補bu充chong尤you為wei重zhong要yao。
2.muzhunaishuiliangbuzu,daozhizaizhuchibubao,dikanglixiajiang,yiyuganranjibing,daozhifuxieshenzhisiwang。muzhuchanhouwunaihuonaishuishaodexianxiangbingbushaojian,danzhuyaoyuanyinkeguiweihuaiyunhouqiyingyangbugou,ruxianweinengchongfenfayu;營養不均衡,能量過高,造成肥胖和內分泌失調;年老體弱不能對飼料有效吸收利用;有疾病感染。
3.奶nai水shui的de有you效xiao營ying養yang含han量liang不bu足zu而er導dao致zhi的de營ying養yang性xing腹fu瀉xie。而er母mu豬zhu哺bu乳ru期qi采cai食shi量liang低di,或huo攝she入ru的de營ying養yang不bu全quan麵mian,不bu能neng滿man足zu仔zai豬zhu生sheng長chang需xu要yao,則ze會hui動dong用yong自zi身shen脂zhi肪fang造zao乳ru,而er這zhe樣yang的de奶nai水shui中zhong並bing沒mei有you足zu夠gou營ying養yang,但dan脂zhi肪fang過guo量liang,從cong而er引yin起qi營ying養yang性xing腹fu瀉xie。
4. 奶水中致病因子會導致仔豬非病原性腹瀉。如今的母豬,大多攜帶藍耳、附紅細胞體等多種病原,隻是處在一個平衡狀態。當轉入產房,缺水、炎熱、驚嚇、分fen娩mian等deng多duo種zhong因yin素su應ying激ji時shi,體ti內nei這zhe種zhong平ping衡heng受shou到dao衝chong擊ji,從cong自zi身shen抵di抗kang力li與yu致zhi病bing因yin子zi間jian的de對dui抗kang到dao重zhong新xin建jian立li平ping衡heng,導dao致zhi母mu豬zhu體ti內nei有you較jiao多duo的de炎yan性xing產chan物wu,從cong而er奶nai水shui中zhong出chu現xian了le較jiao多duo的de炎yan性xing因yin子zi,仔zai豬zhu吮shun吸xi乳ru汁zhi後hou導dao致zhi炎yan性xing產chan物wu中zhong毒du,造zao成cheng哺bu乳ru仔zai豬zhu腹fu瀉xie。若ruo炎yan性xing因yin子zi持chi續xu存cun在zai,則ze會hui導dao致zhi仔zai豬zhu吃chi奶nai後hou病bing情qing嚴yan重zhong的de現xian象xiang,最zui終zhong無wu藥yao可ke治zhi而er死si亡wang。如ru果guo給gei母mu豬zhu輸shu液ye清qing除chu體ti內nei有you害hai物wu質zhi,即ji便bian治zhi療liao及ji時shi,仔zai豬zhu也ye會hui受shou到dao嚴yan重zhong影ying響xiang,往wang往wang終zhong生sheng生sheng長chang發fa育yu緩huan慢man。
總之,減少母豬奶水炎性因子,要從良好的營養、正確的管理入手。如產前一個月飼料中添加優質蛋白、可提高免疫力的產品或能調節新陳代謝的產品,減少母豬應激,從而達到母豬健康,仔豬平安。
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