【正文】 l Conventional nursery pens with slotted floors. 試驗(yàn)在常規(guī) ,具有條縫地板的保育欄進(jìn)行 . Experimental Procedures 試驗(yàn)方法 肯塔基 KY 密蘇里 MO 俄漢俄 OH No. reps/treatment 8 8 8 Pigs/pen 5 23 5 Avg initial age, d Avg initial weight, kg Avg days on test 35 42 40 Avg final weight, kg Floor space/pig, m2 Treatments 日糧處理 l Week 1 (Phase 1) – Common diet – 20% lactose l Week 2 (Phase 2) – Common diet – 15% lactose l Week 3 (Phase 3) – 0, , 5, , 10% lactose ? Week 4 ? Week 5 (Phase 4) – Common diet – no lactose ? Week 6 Source of Lactose 乳糖來源 Dairylac174。HCl, Thr, Met Vit, Tmin premix ZnO CuSO4 Phase 4 Common Diet 第 4階段共同日糧 % Corn Soybean meal, dehulled Dried whey Dairylac 80 Fish meal, select Spraydried plasma Choice white grease Dical phos, Limestone, Salt Lys 80 乳寶 80的成分分析 % Dry matter 干物質(zhì) Lactose 乳糖 Protein 蛋白 Lysine 賴氨酸 Fat 脂肪 Fiber 纖維 Ash 灰分 Ca 鈣 P 磷 NaCl 氯化鈉 Phase 1 and 2 – Common Diets 第 1和第 2階段的共同日糧 Phase 1 (%) Phase 2 (%) Corn Soybean meal, dehulled Dried whey Dairylac 80 Fish meal, select Spraydried plasma Choice white grease Dical phos, Limestone, Salt Lys 84 pigs weaned at 28 days。 252 pigs weaned at 28 days。 480 pigs weaned at 28 days。 35day test from to kg Dried Whey for Weanling Pigs 斷奶仔豬日糧中添加乳清粉的效果 Control Whey Improve 20% ment, % Daily gain, g 236 250 6 Daily feed, g 445 463 4 Feed/gain 3 Survival, 成活率 % 1 Stahly et al. (1983)。 28day test from to kg Dried Whey for Weanling Pigs 斷奶仔豬日糧中添加乳清粉和乳糖的效果 Control Whey Improve 15% ment, % Daily gain, g 304 335 10 Daily feed, g 522 576 10 Feed/gain Burnell et al. (1987)。 28day test from to kg Roller Dried Whey vs. Dairylac80 for Weanling Pigs 滾筒干乳清粉和乳寶 80比較 Control Whey Dairylac80 20% 18% (15% lactose) Daily gain, g 350 368 404 Daily feed, g 586 672 690 Feed/gain Cromwell et al. (1995)。 80 乳寶 80 Granular, nonhygroscopic product produced from sweet whey solubles 顆粒狀 ,不易吸水的來自于甜乳清透析液 Contains ~ 80% lactose 含有大約 80%乳糖 International Ingredient Corporation St. Louis, Missouri Analyzed Composition of Dairylac174。HCl, Thr, Met Vitamin, tracemineral premix Mecadox ZnO CuSO4 Analysis of Diets 日糧乳糖含量分析 Lactose Targeted (%) Analyzed (%) Phase 1 20 Phase 2 15 Phase 3 Diet 1 0 Diet 2 Diet 3 Diet 4 Diet 5 Phase 4 0 Phase 1 – Week 1 Postweaning 第 1階段 ,斷奶后第 1周 KY MO OH ADG, g 262 140 150 P ADFI, g 295 168 217 P Feed/gain P Phase 3 Diets Lactose, %: ADG, g 189 179 178 187 184 ADFI, g 228 219 224 236 227 Feed/gain Phases 1 and 2 – Weeks 1 and 2 Postweaning 第 1和第 2階段即斷奶后 1周和 2周 KY MO OH ADG, g 353 220 287 P ADFI, g 428 274 343 P Feed/gain NS Phase 3 Diets Lactose, %: ADG, g 288 288 281 285 290 ADFI, g 350 342 343 357 350 Feed/gain Phase 3 – Week 3 Postweaning 第 3階段即斷奶后第 3周 KY MO OH ADG, g 561 417 490 P ADFI, g 700 551 649 P Feed/gain P Phase 3 Diets Lactose, %: ADG, g* 467 467 503 505 506 ADFI, g* 613 618 643 646 648 Feed/gain *Linear (P) Phase 3 – Week 4 Postweaning 第 3階段斷奶后第 4周 KY MO OH ADG, g 700 476 629 P ADFI, g 994 634 896 P Feed/gain P Phase 3 Diets Lactose, %: ADG, g 597 600 592 610 610 ADFI, g* 833 830 826 860 856 Feed/gain *Linear (P) Phase 3 – Weeks 3 and 4 Postweaning 第 3階段 ,斷奶和第 3和 4周全期結(jié)果 KY MO OH ADG, g 631 446 560 P ADFI, g 847 592 772 P Feed/gain NS Phase 3 Diets Lactose, %: ADG, g* 532 534 547 557 558 ADFI, g* 723 724 735 753