Asian-Australasian Journal of Animal Sciences
- Volume 12 Issue 3
- /
- Pages.381-387
- /
- 1999
- /
- 1011-2367(pISSN)
- /
- 1976-5517(eISSN)
DOI QR Code
Partition of Amino Acid Requirements of Broilers between Maintenance and Growth. IV. Threonine and Glycine
- Bae, S.H. (Department of Animal Science & Technology, College of Agriculture & Life Sciences Seoul National University) ;
- Kim, J.H. (Department of Animal Science & Technology, College of Agriculture & Life Sciences Seoul National University) ;
- Shin, I.S. (American Soybean Association) ;
- Han, In K. (Department of Animal Science & Technology, College of Agriculture & Life Sciences Seoul National University)
- Received : 1998.03.17
- Accepted : 1998.08.14
- Published : 1999.05.01
Abstract
Two experiments were conducted to subdivide threonine (exp. 1) and glycine (exp. 2) requirements of broilers into maintenance and growth requirements. Purified diets containing five graded levels of threonine (exp. 1) and glycine (exp. 2) were fed to growing chicks to estimate threonine (exp. 1) and glycine (exp. 2) requirements for growth and maintenance. A model developed to divide threonine requirement for maintenance from that for growth yielded a requirement for growth of 8.946 mg/g weight gain and 0.341 mg/mg N gain; the maintenance requirement was 0.033 or 0.030 mg per unit of metabolic body size