They are mostly used for feedstuff.
The ADC values (Table 1) obtained in hybrid striped bass fed with the pike perch diet (and in those fed the two trout diets) are in the lower range of ADC values for feedstuff of animal origin previously reported for hybrid striped bass (Sullivan and Reigh 1995).
This result illustrates the crucial importance of the selection of feedstuffs for FMR and fish oil, since the NOFM diet did not receive amino acid supplementation.
A collaborative study has been carried out in four laboratories (UPV, UPM, CLO, INRA) with the aim of comparing different evaluation methods of feedstuffs for rabbits.
In a study of feedstuffs for horses by Wolf et al. [ 46], 47 % of oats samples and 73%% of straw samples contained >50 ng endotoxin/mg, or >1000 IU endotoxin/mg.
Continuous rise of feed costs has forced livestock producers to find alternative choices for traditional feedstuffs.
Finally, a recovery experiment was set up using different types of feed to identify if the outcome of this experiment was valid for all types of feedstuffs.
After discussing the choice of method used to determine phosphorus true absorption and the possible effects of formaldehyde treatment and phytase in the digestive tract, the authors conclude that it is relevant to determine specific phosphorus absorption rates for each group of feedstuffs.
Therefore, the adoption of the laboratory procedures for the quality assessment of feedstuffs aiming at determining the particle size distribution of a new diet for pigs, might be a reliable preventive measure to reduce the risk of gastric lesion onset in the intensive pork production.
