feeding sows during lactation 哺乳母猪的饲养objectives of .pptVIP

Feeding Strategies for Prolific Sows高产母猪的饲养策略 P.A. Thacker Department of Animal Science University of Saskatchewan Saskatoon, Saskatchewan 加拿大萨斯喀砌温大学动物科学系 中文翻译：美国ADM公司 蔡永久 Changes in the Swine Industry (1980-2005)养猪工业的变化 (1980-2005) Consequences of Poor Sow Nutrition母猪营养缺乏的后果 Gilt Developer Diets后备母猪日粮 Recommendations for Mineral Fortification of a Gilt Developer Diet Compared with a Typical Finisher Diet与肥育猪日粮相比后备母猪日粮中矿物质的推荐添加量 Vitamin Levels for Developer Diets后备母猪日粮的维生素水平 Recommendations for Vitamin Fortification of a Gilt Developer Compared with a Finisher Diet与肥育猪日粮相比后备母猪日粮中维生素的推荐添加量 Feeding Gilts 后备母猪的饲养 It is important that replacement gilts be of sufficient age, size and physiological maturity before breeding. 有必要在繁殖前就选用好后备母猪具备足够年龄、大小、生理成熟状态。 It is also necessary that they have adequate reserves of fat and lean in their body at first mating. 也必需在第一次配种前考虑所选用的后备母猪具备足够体脂和瘦肉储备。 Targets for Gilts at First Mating后备母猪第一次配种时的目标指数 Reproductive Performance of Sows According to Body Weight and Back Fat at First Mating母猪的繁殖性能与第一次配种时的体重和背脂厚度相关 Nutrient Levels to Maximize Lean TissueGrowth Rates in Developing Gilts后备母猪最大瘦肉组织生长率所需的营养水平 Effect of High Fibre Gestation Diets on Reproductive Performance高纤维日粮对怀孕母猪繁殖性能的影响 Feeding Gilts Prior to Mating后备母猪配种前的饲养 The objective of the feeding program immediately before mating is to maximize the number of eggs ovulated. 在临近配种时饲喂程序的目标是促使排卵数最大化。 Ovulation rate is the principle factor limiting litter size in gilts and increasing the level of feed intake prior to mating will significantly increase ovulation rate. 排卵率是限制母猪窝重的主要因子，在配种前提高采食量能显著性地增加排卵效率。 Ovulation rate increases by 1-2 ova in response to increased feed intake during the 14-day period immediately prior to ovulation. This is the well know flushing effect. 在排卵前14天立即增加采食量，排卵数相应会增加1-2个，这是著名的“冲刷”效果。（最大采食量会导致胃肠的迅速排空，即催情补饲） The Effects of Feed Level During the First Estrous Cycle on Litter Size 在第一个发情期饲喂水平对窝重的效果 Summary of Feeding Replacement Gilts