Grouped laying hens were fed on experimental diets containing dried tomato pulp (DTP) at inclusion rates up to 120 g/kg and two control diets (A and A+Carophyll). 2. The addition of DTP did not significantly affect egg production, food consumption and efficiency, egg weight and shell thickness. 3. There was a significant improvement in the egg yolk colour in treatments containing DTP. However, this improvement was significantly lower in comparison to the diet which contained carophyll.
No takes yet. Share an insight, caveat, or question.
Dotas et al. (1999) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: