Table 1.
Keywords, terms and sub-terms.
Fig 1.
Preferred reporting items for systematic reviews and meta-analysis (PRISMA) flow diagram identifying the total number of articles initially surveyed, the number of articles included and excluded for this systematic review (Moher et al., 2009).
Table 2.
Database of intake levels, nutrients digestibilty coefficients and fecal characteristic of dog protein ingredients according selected articles for systematic review.
Table 3.
Inclusion levels of soybean meal, poultry offal meal and other protein sources evaluated in the studies and adults dogs diets processing information.
Table 4.
Inclusion levels and intake levels of dry matter (DM), crude protein (CP), ether extract (EE), gross energy (GE) of soybean meal and poultry offal.
Table 5.
Inclusion effects of soybean meal and poultry offal meal under digestibility coefficients, metabolizable energy, fecal production and fecal dry matter.