标准回肠可消化氨基酸应用_德固赛高俊

Comparison of the test subtsances vs diet
95 90 85 80 75 70 65 60 55 50
*
*
NS
**
Fish meal
MBM
Maize
Wheat bran
Test ingredient
Basal diet + test ingredient
Kadim & Moughan 1997
Digesta collection by slaughter method
“Digesta-Sample”
Stomach Duodenum Jejunum Ileum Caecum
from 20 cm to 5 cm anterior to the ileocaecal junction
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General method to determine Ileal digestibility in poultry

The ileal digestibility assay by applying the “Slaughter method” is an alternative

growing chicken used ad libitum feeding of test diet for several days
Feed Additives – amino acids and more.
Effect of urinary amino acids
faecal digestibility, %
faeces + urine 100 90 80 70 60 50
Effect of hindgut fermentation in poultry
Lys Availability / Digestibility, %
Availability 100
93 94
Digestibility - inBiblioteka Baiduact
90
Digestibility - caecectomised
内源分泌物的校正
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Feed Additives – amino acids and more.
你自已的消化率数据库怎么来的?
自已做动物实验测定的?
怎么做,方法正确吗?
从发表文献上总结来的?
文献的方法对吗?可靠吗? 不同的方法怎样综合在一起?怎样取舍?
Evonik Degussa 推荐用标准回肠（SID）消化率，并用SID作
标准回肠可消化氨基酸在 猪和禽饲料配制中的应用
高俊 博士 健康与营养事业部－饲料添加剂 赢创德固赛工业集团 jun.gao@evonik.com TEL:13501294499.
在实际生产中 您用的是哪种消化率？
全消化道(粪)消化率 VS. 回肠消化率
后肠微生物发酵 粪尿混合(禽)
表观与标准(真)消化率
为营养研究和生产应用的基础。
回肠
VS. 粪(全消化道)；
标准
VS. 表观。
消化率≠利用率，但SID是对利用率最接近的估计；
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Feed Additives – amino acids and more.
粪消化率和回肠消化率比较
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Feed Additives – amino acids and more.
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Feed Additives – amino acids and more.
Basal diet for ileal digestibility assay
Composition (g/kg)
Test substance Glucose Soybean oil Cellulose Vitamins/Trace elements Minerals Celite Sum
87 79 76 72 75 79
90 80 70 60 50
SBM
Soy beans
Meat meal
Han et al. 1991, Poult. Sci. 70: 896-906 Parsons 1986, Brit. J. Nutr. 56: 227-240
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Feed Additives – amino acids and more.
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Feed Additives – amino acids and more.
the influence of class of bird on digestibility (Kim,2006)
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Feed Additives – amino acids and more.
General method to determine excreta digestibility in poultry

Most currently available DC were determined by the “Precision fed cockerel assay”


slaughter the broilers and taking
digesta from the terminal ileum
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Feed Additives – amino acids and more.
不同试验方法对测定结果的比较
Carcia.2007.Poultry Sci., 86:94-101
adult rooster used fasting force feeding of test substance fasting and excreta collection for appropriate period of time
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Feed Additives – amino acids and more.
Corn SBM MBM
918 20 12 30 20 1000 438 441 60 12 29 20 1000 364 555 20 30 11 20 1000
* Ravindran et al. 1999, Br. Poult. Sci. 40: 266-274
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Feed Additives – amino acids and more.