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瓦赫寧根大學研究中心的PPS Feed4Foodure 團隊在史特克塞爾豬創新中心公布一項成果，哺乳期懷孕的母豬，在6周的哺乳期內飼喂水平必須提高。為了降低體重損失，高淀粉日糧更優于高脂肪日糧。與正常飼喂水平（2.8 kg/d）相比，斷奶至妊娠第34天的高飼喂水平（3.5 kg/d）的母豬體況恢復地更好。
關于哺乳期懷孕母豬的飼喂水平方面的信息很少。因此，史特克塞爾豬創新中心評估了，在6周哺乳期的最后8天，分別飼喂高淀粉、高脂肪日糧對哺乳期懷孕母豬的體重、背脂厚度、仔豬生長性能，及下一胎產活仔數、死胎數的影響。還評估了斷奶（授精后第9天）至妊娠第34天的飼喂水平對母豬體重、背脂厚度，及下一胎產活仔、死仔數的影響。
在哺乳第27天，采用間歇性哺乳來誘導哺乳期內發情。緊接著7天內，每天將母豬與仔豬分離10小時。在間歇哺乳開始后的第6天內，77%的母豬表現出發情，同時給予授精。授精之后，母豬不再執行間歇性哺乳，與其仔豬一起直至42天的哺乳期結束。從哺乳第34天至42天，母豬分別飼喂高淀粉或高脂肪日糧。斷奶（授精后第9天）至妊娠第34天母豬分別飼喂2.8kg/d（正常水平）、3.5kg/d（高水平）的同種商業妊娠日糧。
與高脂肪日糧相比，高淀粉日糧降低了母豬42天哺乳期最后8天的體重損失（9 versus 13 kg）。斷奶（授精后第9天）至妊娠第34天高飼喂水平的母豬，斷奶至轉移至分娩欄時的體增重提高（67.8 versus 59.0 kg）。哺乳期的日糧組成及妊娠期的飼喂水平對下一胎產活仔、死胎數均沒有影響。
附原文：
Starch rich lactation diet improves recovery of lactating sows that are pregnant
Published on
June 21, 2016
Sows that are both gestating and lactating during a 6-week lactation period should be fed on a high feeding level. To reduce the loss of body weight, a starch rich diet is preferred over a fat rich diet. A high feeding level （3.5 kg/d） after weaning until day 34 of gestation results in a better condition recovery of the sows than a standard feeding level （2.8 kg/d）。 This was shown in research that was conducted within the PPS Feed4Foodure by Wageningen UR on Swine Innovation Centre Sterksel.
There is little information about the feeding of sows that are both gestating and lactating during an extended lactation. Therefore, at Swine Innovation Centre Sterksel, the effect of feeding sows that are both gestating and lactating a starch rich or a fat rich lactation diet during the last 8 days of a 6-week lactation on weight and backfat thickness, performance of the piglets and the number of live born and stillborn piglets in the next parity were studied. In addition, the effect of feeding level from weaning （about 9 days after insemination） until day 34 of gestation on weight and backfat thickness and the number of live born and stillborn piglets in the next parity was studied.
On day 27 of lactation intermittent suckling started to induce lactational oestrus. During a period of 7 days, sows and piglets were separated for 10 hours per day. 77% of the sows showed oestrus within 6 days after the start of intermittent suckling and were inseminated. After insemination, intermittent suckling was no longer applied and sows remained with their piglets till weaning on day 42 after farrowing. From day 34 until day 42 sows were fed a starch rich or a fat rich diet lactation diet. From weaning （about 9 days after insemination） until day 34 of gestation sows were fed 2.8 kg/d （standard feeding level） or 3.5 kg/d （high feeding level） of a commercial gestation diet.
Weight loss （9 versus 13 kg） during the last 8 days of the 6-week lactation tended to be lower in the sows that were fed the starch rich diet. Body weight gain from weaning until the day of transfer to the farrowing room was higher in sows that were fed the high feeding level until day 34 of gestation （67.8 versus 59.0 kg）。 The number of live born and stillborn piglets was not affected by feed composition during lactation or by feeding level during gestation.
