肉鸡、蛋鸡和去盲肠公鸡内源氨基酸流量的比较。

Comparison of endogenous amino acid flow in broilers, laying hens and caecectomised roosters.

Adedokun S A, Utterback P, Parsons C M, Adeola O, Lilburn M S, Applegate T J

Department of Animal Sciences, Purdue University, West Lafayette, IN 47907-2054, USA.

Br Poult Sci. 2009 May;50(3):359-65. doi: 10.1080/00071660902951313.

Abstract

This study was conducted to determine and compare endogenous amino acid (EAA) flow in broilers, laying hens, and caecectomised roosters fed on either a nitrogen-free diet (NFD) or a highly digestible protein diet (HDP). 2. Also, the EAA flows using three methods (fasted, NFD, or HDP) in precision-fed caecectomised roosters were compared. 3. EAA flow did not differ between broilers and laying hens on either the NFD or HDP diets. 4. Endogenous amino acid flow in caecectomised roosters was 3.5-12-fold higher than for broilers and laying hens for both methods (NFD and HDP) of estimation. 5. When caecectomised roosters were fasted or precision-fed (NFD or HDP), there was no difference in EAA flow between the NFD- or HDP-fed birds. 6. However, flows from fasted roosters were lower than from roosters receiving either the NFD or HDP diet. 7. Results from this study showed that EAA flow is method-dependent. Total amino acid flow from fasted birds was 31% less than when a NFD was fed to caecectomised roosters.

摘要

本研究旨在测定并比较以无氮日粮（NFD）或高消化率蛋白日粮（HDP）饲喂的肉鸡、蛋鸡和去盲肠公鸡的内源性氨基酸（EAA）流量。2. 此外，还比较了在精确饲喂的去盲肠公鸡中使用三种方法（禁食、NFD或HDP）测得的EAA流量。3. 在NFD或HDP日粮条件下，肉鸡和蛋鸡的EAA流量没有差异。4. 对于两种估算方法（NFD和HDP），去盲肠公鸡的内源性氨基酸流量比肉鸡和蛋鸡高3.5至12倍。5. 当去盲肠公鸡禁食或精确饲喂（NFD或HDP）时，饲喂NFD或HDP的鸡之间的EAA流量没有差异。6. 然而，禁食公鸡的流量低于接受NFD或HDP日粮的公鸡。7. 本研究结果表明，EAA流量取决于方法。禁食鸡的总氨基酸流量比给去盲肠公鸡饲喂NFD时少31%。