PMID- 30177972 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 2297-1769 (Print) IS - 2297-1769 (Electronic) IS - 2297-1769 (Linking) VI - 5 DP - 2018 TI - The Effect of Low Protein Energy-Rich Diets on Plasma Hepatic Markers, Hepatic Damage, and Discrimination Reversal Learning in Young Female Chicks. PG - 107 LID - 10.3389/fvets.2018.00107 [doi] LID - 107 AB - Consumption of low protein energy-rich (LPER) diets increases susceptibility to metabolic disease in mammals, such as hepatic damage, and can have an adverse effect on cognition. However, the effects of these diets on both physical and mental welfare have not been investigated in domestic meat chickens. Female chicks received a low protein energy-rich or a standard control diet from 21 to 51 days of age. The effects of these dietary manipulations on plasma hepatic markers for liver damage, liver necropsy, and learning a visual discrimination reversal task were assessed. Birds given access to LPER diets weighed less than chicks that had access to the control diets. All chicks had post-mortem signs of hepatic hemorrhage/increased liver color scores and aspartate aminotransferase (AST) levels above 230 U/L indicative of hepatic damage in birds. The LPER diet had no impact on the performance of female chicks when learning to distinguish colors in a reversal visual discrimination task. The present study suggests that liver damage does not become worse when feeding LPER or impact visual reversal learning in female meat-type chickens. However, the high incidence of liver cell damage/liver hemorrhage, and "abnormal" AST activities are of concern in female broiler chicks across both diets, and suggests that the health of modern meat-type genotypes needs to be improved. FAU - Bona, Laura AU - Bona L AD - Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada. FAU - van Staaveren, Nienke AU - van Staaveren N AD - Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada. FAU - Pokharel, Bishwo Bandhu AU - Pokharel BB AD - Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada. FAU - van Krimpen, Marinus AU - van Krimpen M AD - Wageningen UR Livestock Research, Wageningen, Netherlands. FAU - Harlander-Matauschek, Alexandra AU - Harlander-Matauschek A AD - Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada. LA - eng PT - Journal Article DEP - 20180523 PL - Switzerland TA - Front Vet Sci JT - Frontiers in veterinary science JID - 101666658 PMC - PMC6110198 OTO - NOTNLM OT - cognition OT - enzymes OT - female broiler OT - hepatic damage OT - welfare EDAT- 2018/09/05 06:00 MHDA- 2018/09/05 06:01 PMCR- 2018/01/01 CRDT- 2018/09/05 06:00 PHST- 2018/03/06 00:00 [received] PHST- 2018/05/01 00:00 [accepted] PHST- 2018/09/05 06:00 [entrez] PHST- 2018/09/05 06:00 [pubmed] PHST- 2018/09/05 06:01 [medline] PHST- 2018/01/01 00:00 [pmc-release] AID - 371628 [pii] AID - 10.3389/fvets.2018.00107 [doi] PST - epublish SO - Front Vet Sci. 2018 May 23;5:107. doi: 10.3389/fvets.2018.00107. eCollection 2018.