大豆协会博士-猪育种资料（中英文）.pptVIP

现代后备及经产母猪育种技术MODERN GILT AND SOW BREEDING AND LACTATION TECHNOLOGY 美国大豆协会中国办事处畜禽技术主任 麦金能博士 Philip McKinnon, Ph.D Livestock Technical Director ASA China 根据2001年9月美国大豆协会养猪高级研讨班Frank Aherne博士讲稿改编 Adapted from Dr. Frank Aherne presentations at ASA Advanced Swine Seminar, September, 2001  Managing the breeding herd繁 殖 猪 群 的 管 理 Objective 目标 Consistently produce a targets supply of good quality weaned pigs at low cost (value maximization) 持续地生按计划产出低成本的优质断奶仔猪(价值最大化) Decreased cost per pig shipped 降低每头出售仔猪的成本 More predictable production-reduced variation 能较好地预测生产状况，减少变异 Relative importance of factors influencing the number of pigs weaned per week Number of females bred per week is dependent on 3 subpopulations每周配种母猪数取决于三个因素 Number of weaned sows available 可供配种的断奶母猪数量 Number of gilts available 可供配种的小母猪数量 Number of opportunity sows available (skips, aborted, active cull sows) 其它可用母猪的数量(可在下一个情期供利用的母猪,流产母猪,将予以主动淘汰的母猪) Percentage of sows returning to estrus on different days after weaning断奶后不同时间发情母猪的比例 Gilt litters constitute the largest parity group在所有各胎次的母猪中,头胎母猪占的比例最大Range 15 – 40%)约占(15 - 40%) Common situation with gilt replacement后备母猪通常的体况标准 Gilts selected on farm at 145 – 155 days weight 95 to 105 kg 11 to 13 mm P2 backfat 小母猪到达繁殖猪场时应为145-155日龄,届时体重应为95-105千克，P2背膘厚应为11-13毫米 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 From time of selection the feeding and management program should be based on age and backfat level at time of selection with the objective of having gilts with 16 to 18 mm P2 backfat at time of breeding从选择的时候起，饲喂和管理方案就应根据选择时的日龄和背膘厚水平来制定，目标是使小母猪在配种时P2背膘厚达到16-18毫米 For gilts older than 145 days and/or more than 14 mm P2 backfat at 115 kg, feed a developer diet ad libitum up to breeding 对于体重115千克时大于145日龄以及/或者P2背膘厚大于14毫米的小母猪,应饲喂发育期日粮直到配种。 For gilts