母猪营养-Frank_Aherne博士.pptVIP

Nutrition of the Sow母 猪 的 营 养;母猪的饲喂 Feeding Sows;A suggested feeding program for replacement gilts to 115kg liveweight后备母猪到115千克体重的饲喂方案;Common targets for replacement gilts后备母猪通常的体况标准; For gilts younger than 145 days of age and /or with less than 14 mm P2 backfat at 110 to 115 kg (final selection) 对于145日龄时体重小于 110-115千克体重或背膘厚小于14毫米的小母猪(最后选育时) Feed a fat enhancing diet until the gilts have 16 t0 17 mm P2 应饲喂脂肪强化日粮直到P2背膘厚达到16-17毫米;Gilt Diets - After selection (115 kg to service) 选择后的小母猪日粮(115千克体重到配种);The effects of age at breeding on longevity and performance;Holder et al. 1995;When to breed?? 何时配种??;Performance Goals 性能目标;妊娠期Gestation ;断奶到配种间隔天数;目标是，各胎次母猪分娩时的P2背膘厚都应为18-20毫米 (用超声波背膘测试仪检测) Aim for 18-20 mm P2 backfat for all parity sows at farrowing, measured with ultrasonic backfat tester.;妊 娠 期 采 食 量 对 母 猪 生 产 率 的 影 响;妊 娠 期 蛋白质摄入量 对 母 猪 生 产 率 的 影 响;妊娠母猪饲料需要量(0 - 100天) Feed requirements for gestating sows (d 0 - d 100);妊娠后期的饲喂方式 Pattern of Feeding Late Gestation;妊娠期胎儿的生长;泌乳期 LACTATION;泌乳期采食量对泌乳量和母猪失重的影响 摘自：Whittemore,1984;许多母猪都不能摄入足够的能量和养分以满足自身的需要Many sows do not consume sufficient energy and/or nutrients to meet their requirements;泌乳期采食量对繁殖性能的影响Effect of feed intake during lactation on reproductive performance;在泌乳期的任何一周限制养分都会显著影响母猪的繁殖力 Nutrient restriction in any week of lactation will significantly influence sow fertility.;We speculate that loss of maternal protein reserves, rather than loss of maternal lipid reserves, drives lactational performance and subsequent reproductive efficiency.;头胎泌乳母猪蛋白质损失和卵巢功能的关系Relationship between protein loss and ovarian function in lactating first-litter sows;由于母猪泌乳期体重损失中既损失了蛋白质，也损失了脂肪，所以脂肪损失和以后繁殖性能之间的强相关可能明确地反映了蛋白质损失到了阈值以下。 Because sow weight loss in lactation usually consists of both protein and fat, a strong correlation between fat loss and subsequent reproductive performance may simply reflect the loss of protein below her threshold;泌乳早期采食量的重要性Importance of early lactation feed intake;周 平均