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1、PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople?降低斷奶前仔豬死亡率的方法PIC中國公司ACompanyPWYPICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebe
2、tterporkpeople??每頭母豬每年所能提供的斷奶仔豬數(shù)---衡量一個豬場總體效益(利潤)的一個最重要指標(biāo)?PWY=年產(chǎn)窩數(shù)*窩均產(chǎn)仔豬數(shù)*斷奶前成活率/母豬數(shù)ACompany年產(chǎn)窩數(shù)PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??母豬一年中所產(chǎn)窩數(shù)可以通過提高受胎率、縮短斷奶至再次配種的間隔時間和采用早期
3、斷奶方法(減少NPD)來提高ACompany窩均產(chǎn)仔數(shù)PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??窩產(chǎn)仔數(shù)可以通過雜交、人工授精、雙(多)重配種以及維持母豬群中合理的胎次結(jié)構(gòu)等途徑來實現(xiàn)ACompany斷奶前成活率PICChina?Thebetterporkpeople??PICChina?Thebetterp
4、orkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??斷奶前成活率的提高是見效快、最容易產(chǎn)生直接利潤的途徑?成績的提高與員工的努力程度和責(zé)任心關(guān)系密切ACompany不同研究者對不同豬場斷奶前仔PICChina?Thebetterporkpeople??PICChina豬死亡率的調(diào)查結(jié)果?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebe
5、tterporkpeople?死亡率(%)死胎(%)Sharpe,196621.44.2English,196924.47.9Fahmyetal.,197123.67.2Lemanetal.,197219.57.2Neilsonetal.,197417.85.9Glastonbury,197614.35.8Spiceretal.,198611.38.3MLC,198911.15.4資料引自Hughes,1992年ACompany仔豬死亡分析PICChina?Thebetterporkpeople??PI
6、CChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople?ACompany仔豬死亡分析PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??母豬的擠壓、寒冷、饑餓、虛弱或疾病等因素單獨或綜合而造成?死亡主要
7、集中在出生后的頭幾天，因此，在出生后的最初幾天多加關(guān)照，就可能降低這一損失ACompany努力方向PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople?降低死胎通過改善仔豬的途徑來降低斷奶前仔豬死亡率通過改善母豬來降低斷奶前仔豬成活率通過改善環(huán)境來減少斷奶前仔豬的死亡率ACompany降低死胎PICChina?Thebet
8、terporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??PICChina?Thebetterporkpeople??大多數(shù)死胎仔豬在分娩的時候仍處于存活狀態(tài)，這部分損失也被作為斷奶前死亡而加以統(tǒng)計?分娩期間仔豬死亡的原因如果不完全是，但也至少大部分是因窒息而造成（臍帶損壞或斷裂）,分娩拖延的時間越長越危險?這些損失對于生產(chǎn)來說，是不能夠接受的ACo
