0.857
IF5
0.900
IF
Q3
JCR
0.92
CiteScore
0.405
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SJR
20
MNiSW
165.24
ICV
REVIEW PAPER
 
CC-BY 4.0
 
 

Ammonia production, ammonia absorption, and urea recycling in ruminants. A review

Z. Tan 1  ,  
 
1
Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, P.R. China
2
Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana 61801,USA
J. Anim. Feed Sci. 2004;13(3):389–404
Publish date: 2004-06-16
KEYWORDS
ABSTRACT
Relevant research on ammonia production, ammonia absorption, and urea recycling in ruminants was reviewed. Ammonia production and utilization in the rumen and post-ruminal digestive tracts are described in detail. Absorption of ammonia into portal-drained viscera, ammonia detoxification and urea synthesis in the liver, and urea degradation in the gastrointestinal tract are then discussed. The factors of affecting urea recycling and its pathways are also analysed. Suggested future research should focus on urea recycling dynamics and improvement of protein conversion efficiency, and on the development of an integrated mechanistic model to describe the digestion and metabolism of nitrogen-containing compounds in ruminants fed practical diets.
CORRESPONDING AUTHOR
Z. Tan   
Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, P.R. China
 
CITATIONS (13):
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Animal Feed Science and Technology
2. In vitroevaluation on neutral detergent fiber and cellulose digestion by post-ruminal microorganisms in goats
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Journal of the Science of Food and Agriculture
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Archives of Animal Nutrition
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Animal Biotechnology
5. Description of a bovine model for studying digestive and metabolic effects of a positive energy balance not biased by lactation or gravidity
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Archives of Animal Nutrition
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Journal of Dairy Science
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Journal of Dairy Science
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A. Belanche, L. Abecia, G. Holtrop, J. A. Guada, C. Castrillo, G. de la Fuente, J. Balcells
Journal of Animal Science
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H.L. Dang, T. Obitsu, T. Sugino
Animal Feed Science and Technology
11. Effects of hydrated sodium calcium aluminosilicate on growth performance, fatty liver, intestine morphology, and serum parameters of overfed geese
Junwang Tang, Maxue Lu, Qianqian Fang, Feizhen Lu, Rongyi Shao, Junda Shen, Dailin Lu, Jun He, Lizhi Lu, Dong Niu
Animal Production Science
12. Effect of the Level of Energy and Dietary Protein of Ammoniated Rice Straw on the Productivity of Male Simmental Cattle in a Tropical Area
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Pakistan Journal of Nutrition
13. Dietary dragon fruit (Hylocereus undatus) peel powder improved in vitro rumen fermentation and gas production kinetics
Maharach Matra, Metha Wanapat, Anusorn Cherdthong, Suban Foiklang, Chaowarit Mapato
Tropical Animal Health and Production
ISSN:1230-1388