【正文】
母豬(最后選育時(shí)) Feed a fat enhancing diet until the gilts have 16 t0 17 mm P2 應(yīng)飼喂脂肪強(qiáng)化日糧直到P2背膘厚達(dá)到1617毫米,第五頁(yè),共四十三頁(yè)。,第六頁(yè),共四十三頁(yè)。,The effects of age at breeding on longevity and performance,2357 records, L42 PIC sows (Alberta Pig Company2000)PIC42系母豬(mǔ zhū),2357份記錄,首配日齡對(duì)利用年限和性能(x236。ngn233。ng)的影響,第七頁(yè),共四十三頁(yè)。,Holder et al. 1995,Performance of early and late maturing gilts早成熟(ch233。ngsh)和晚成熟(ch233。ngsh)小母豬的性能,第八頁(yè),共四十三頁(yè)。,When to breed?? 何時(shí)(h233。 sh237。)配種??,Our recommendation 我們的建議 Preferred age/weight at breeding 配種時(shí)適宜的日齡和體重 190 days 大于190日齡 120 to 130 kg 體重120130千克(qiānk232。) 16 to 18 mm P2 backfat P2背膘厚1618毫米 second estrus 第二情期,第九頁(yè),共四十三頁(yè)。,Performance Goals 性能(x236。ngn233。ng)目標(biāo),第十頁(yè),共四十三頁(yè)。,妊娠期Gestation,第十一頁(yè),共四十三頁(yè)。,第十二頁(yè),共四十三頁(yè)。,目標(biāo)是,各胎次母豬分娩時(shí)的P2背膘厚都應(yīng)為1820毫米(h225。o mǐ) (用超聲波背膘測(cè)試儀檢測(cè)) Aim for 1820 mm P2 backfat for all parity sows at farrowing, measured with ultrasonic backfat tester.,第十三頁(yè),共四十三頁(yè)。,第十四頁(yè),共四十三頁(yè)。,第十五頁(yè),共四十三頁(yè)。,妊娠(r232。nshēn)母豬飼料需要量(0 100天) Feed requirements for gestating sows (d 0 d 100),日糧含蛋白質(zhì)13.5%;賴氨酸0.55;代謝能3兆卡/千克(qiānk232。) Diet contains 13.5% protein, 0.55% lysine 3 Mcal ME/kg,第十六頁(yè),共四十三頁(yè)。,妊娠后期的飼喂(s236。 w232。i)方式 Pattern of Feeding Late Gestation,從妊娠90天到分娩期間,每天的標(biāo)準(zhǔn)飼喂(s236。 w232。i)水平必須增加1.0 1.5千克以預(yù)防動(dòng)用體脂. Standard feeding levels must be increased by 1.0 to 1.5 kg feed per day from d 90 of gestation until farrowing to prevent mob