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苏氨酸在最有效性成本配方中的作用 Beneficial Role of Thr in Cost-Effective Formulation

苏氨酸在最有效性成本配方中的作用 Beneficial Role of Thr in Cost-Effective Formulation. Yong J. Cai, Ph.D. Director of Animal Nutrition - Asia ADM Specialty Feed Ingredients Division Hong Kong. 今日要点. 认识最有效性营养配方的生产效益 - 为什么 饲料中要考虑添加苏氨酸? - 如何 在日粮中添加好苏氨酸而不那么增加成本?

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苏氨酸在最有效性成本配方中的作用 Beneficial Role of Thr in Cost-Effective Formulation

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  1. 苏氨酸在最有效性成本配方中的作用Beneficial Role of Thr in Cost-Effective Formulation Yong J. Cai, Ph.D. Director of Animal Nutrition - Asia ADM Specialty Feed Ingredients Division Hong Kong

  2. 今日要点 • 认识最有效性营养配方的生产效益-为什么饲料中要考虑添加苏氨酸?-如何在日粮中添加好苏氨酸而不那么增加成本? Recongnize profits in the most cost-effective formulation- Why threonine needs in animal feeds?- How to optimize dietary Thr levels with minimum cost

  3. 如何認識“降低飼料成本” • 減少配方成本least-cost - 傳統上的考慮(只选用便宜原料) - 新方法的實踐(多搭配各种低价原料) • 强化飼料效益most cost-effective - 最新趨勢(省资源且环保) - 革新化賞識(最有效性营养配方)

  4. Nitrogen Retention, g·kg-1BW.75·d-1 4.0 V 3.5 U 3.0 L 2.5 2.0 1.5 R 1.0 0.5 0.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 Apparent Digestible N Intake, g·kg-1BW.75·d-1 Figure 2. Estimation of the amount of apparent digestible N intake(R, g·kg-1BW.75·d-1) needed to maximize N retention (L, g·kg-1BW.75·d-1) and the relative efficiency (U, V) of utilization of digestible N for body N accretion at digestible N intakes below and above R, respectively. n=190 observations. (Iowa State Univ 2001)

  5. 豬飼料蛋白水平對氮排泄的影響 食物蛋白水平 (%) 氮吸收 (g/d) 61.5 54.4 46.5 氮排泄 (g/d) 37.9 31.8 24.5 氮利用率 (%)38 42 47 (Canh et al. 1998)

  6. (Miller 2002)

  7. THE NATURE OF WHAT’S TO COME

  8. 常用饲料原料中的苏氨酸含量 (選自AmiPig 2000)

  9. 常用飼料原料中四种限制性氨基酸的表觀消化率常用飼料原料中四种限制性氨基酸的表觀消化率 (選自AmiPig 2000)

  10. 生長豬的最适氨基酸需求模式 *日維持需要量表達為每公斤代謝体重. (根据Fuller 1989).

  11. 乳免疫蛋白的氨基酸組成 (Bowland 1966)

  12. 苏氨酸缺乏对仔猪肠功能的影响Impacts of Thr Deficiency in Neonate Pig’s Gut Functions (Overend 2004)

  13. Amino Acids Protect Natural Resources:More Grains, Less Soybean Meal 多谷物少豆粕 Kg 饲料/kg 体重 育肥猪, 27-110 kg Kg 蛋白/kg 体重 食物蛋白High 中 Med Low 谷物类 % 76 82 87 大豆 % 15 13 10 添加氨基酸 o + ++ (Hagemann et al. 1999)

  14. 日粮粗蛋白水平對仔豬腹瀉的影響

  15. 高瘦肉型豬的生長受日糧賴氨酸水平變化的影響高瘦肉型豬的生長受日糧賴氨酸水平變化的影響

  16. (穆淑琴等,2004)

  17. 肉雞飼料按可消化氨基酸水平配方所帶來的經濟效益肉雞飼料按可消化氨基酸水平配方所帶來的經濟效益 Total difference $474 = 10,937 x (0.396 x 2.234 - 0.370 x 2.274) (Baker & Han 1994)

  18. 肉中雞料按可消化氨基酸水平配方的好處

  19. 日粮蘇氨酸水平對仔豬生長表現的影響

  20. 日粮苏氨酸水平对肉鸡(42-56d)生长表现的影响Effects of Dietary Thr Levels on Performance in Broilers ADG, g FCR (Kidd et al. 1999)

  21. 日粮苏氨酸水平对肉鸡(7-21d)生长表现的影响Effects of Dietary Thr Levels on Performance in Broilers FCR, g ADG, g (Burnham et al. 1999)

  22. 日粮苏氨酸水平对肉鸡眮体产量的影响Broiler Carcass Affected by Dietary Thr Levels Carcass, g (720 Ross male broilers aged 42-56 days, Dozier et al. 1999)

  23. 肉鸡喂食无鱼粉饲料后的生长表现Performance of Broilers Fed non-Fish Meal Diets (Srinongkote et al. 1999)

  24. 不同饲料苏氨酸水平对蛋鸡表现的影响Effects of Dietary Threonine Levels on Hens CONCLUSION 1. Laying hens reared under practical conditions may have reduced egg production traits if dietary Thr is limited. 2. The Thr/Lys ratio needed for adequate egg production traits is 0.68. (Martinez-Amezcua et al. 1999)

  25. 豬禽飼料中最佳的蘇:賴氨酸比例%*

  26. 飼用氨基酸在歐洲的添加量Inclusion Levels of Lys & Thr in Euro Countries

  27. 配方建议:在维持动物相似生长情况下对中、 大猪或肉鸡饲料中添加苏氨酸的情况 如果想用4-6%棉粕或菜粕取代豆粕来节省成本,配方中锁定赖氨酸水平时,粗蛋白水平一般会增加约1%个单位。 如果能用理想蛋白概念来平衡饲料中氨基酸组成并适当添加苏氨酸会节省成本更多,配方中需同时锁定赖氨酸和粗蛋白水平。

  28. 总结:添加飼用蘇氨酸的必要性 1.動物對蘇氨酸的維持需要量比其它氨基酸高。 2.蘇氨酸往往容易成為玉米-豆粕型飼料中的第二限制性氨基酸。 3.畜禽對常用飼料原料中的蘇氨酸有相對低的消化利用率。 4.平衡好日粮蘇氨酸与赖氨酸含量至理想水平能明显改善飼養動物的生長表現。 5.适量添加蘇氨酸有助于幼齡動物抗应急反应或增強其抵抗疾病的免疫能力。

  29. Thank you! 谢谢! 請參考 李月明,蔡永久 2003。SPC-水产饲料的优质蛋白源。《飼料广角》第23期, P.41 李月明,蔡永久 2003。SPC-乳猪饲料的优质蛋白源。《飼料广角》第17期, P.11. 蔡永久, 2002, 飼料配方能量指標的優選,《中國飼料》第13期, P.27. 蔡永久, 2001, 應重視日攝食量變化對動物營養需求的影響,《中國飼料》第19期, P.25. 蔡永久, 2000, 合理發揮飼用氨基酸的最大效益,《飼料工業》第2期, P.5. 电邮:yong_cai@jhi-admworld.com

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