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New
Model to improve the effective utilization of animal protein
Chinese scientists have created for the first time internationally
the method of injecting isotope in checking poultry internal amino
acid loss, developed new model to improve animal protein effective
utilization. The research group headed by Prof. Yao Junhu, from the
Northwest Sci-Tech University of Agriculture and Forestry is responsible
for this project. A few days ago the project had passed the research
achievement appraisal organized by the Ministry of Education.
At present, China has the problems in high efficient utilization of
amino acid in poultry. The measuring method of checking poultry internal
amino acid loss has many serious drawbacks, thus feed protein cannot
achieve rational utilization. In the poultry diet design, people only
pay attention to gross protein, ignore amino acid content, thus, the
energy/protein ratio is on the low side. To counter this actual problem,
the research group took the lead in establishing the method of injecting
isotope to examine poultry internal amino acid loss through isotope
labeling and metabolic experiment. This method is much easier, rapid,
low cost and higher precision as compared with current method of continuous
injecting isotope. Through metabolic experiment, feeding experiment,
and pilot experiment the research group found that when designing
poultry diet, we should make use of available amino acid as the major
target, using the model of low protein, but high amino acid high energy
and high vitamin diet in high temperature seasons. This diet model
can reduce nitrogen evacuation volume and moisture content in poultry
feces, so as to increase protein utilization rate. The research group
has put forward the appropriate amino acid and major nutrients requirement
standard for poultry diet in northwest regions of China and formulated
the formulation model of typical diet for poultry.
According to understanding, the research group has studied the research
topic while extended research achievement when it was implementing
the research project. Through optimization, the research group has
screened out over 60 sets of “typical feed formulations” in practice.
At present, the research achievement has been applied in production.
Source: Veterinary Pharmaceuticals and Feed Additive, Vol. 9 (1),
2004, p. 46.
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