The use of feedstuff (grass, hay, silage) with different pH-values may possibly cause inter-individual differences in the hardness of tooth substances, too.
In Sweden at least, it is wished that the use of imported feedstuffs in animal production will decrease due to the risk of contamination with Salmonella and the ban of using GMO crops in Swedish dairy production.
Increasing the use of alternative feedstuffs would be one way of reducing the competition between human and animal consumption.
Improving digestive efficiency is a major goal in poultry production, to reduce production costs, make possible the use of alternative feedstuffs and decrease the volume of manure produced.
Benefits of improving the efficiency of feed utilization can be extended by appropriate feeding practices: in laying hens, sequential feeding of wheat grain and protein mineral concentrate improved feed conversion, and could facilitate the use of local feedstuffs introduced as whole grains, thus reducing feeding costs (Faruk et al., 2010).
Therefore, to ensure consistency within the database, the nutritional values (metabolizable energy, CP and amino acid) of each treatment were estimated using NRC tables of feedstuffs composition (NRC, 1994).
The use of non-conventional feedstuffs is gaining recognition especially in developing countries.
Doing so resulted in a final model with the same factors as shown in Table 7, except that automatic milking was replaced by another protective factor (farm clothes and boots available for professional visitors) and 2 borderline significant risk factors (distance to the nearest C. burnetii positive BTM small-ruminant farm and use of by-product feedstuffs) (data not shown).
In conclusion, both mussel and starfish products showed chemical characteristics arguing for their use as feedstuffs in pig diets.
They are mostly used for feedstuff.
However, least attention has been given to access the use of unconventional but promising feedstuffs such as insect meal in commercial fish feed formulation.
