Akademik Veri Yönetim Sistemi
Veterinary Medicine and Science, sa.11, ss.1-9, 2025 (SCI-Expanded)
This study sought to evaluate the occurrence of various degrees of liver haemorrhagic syndrome (LHS) in broilers subjected tocommercial rearing conditions. The objective was to investigate the influence of lesion scores on various biochemical parameters.The prevalence of liver lesions graded from 0 to 5 was 12%, 31%, 33%, 15%, 6% and 3%, respectively. The crude protein contentdecreased, whereas the crude fat content increased in Scores 4 and 5 (p < 0.05). The observed increase in thiobarbituric acidreactive substances (TBARSs), carbonyl and sulphydryl levels in Score 5 (82.8%, 43.3% and 74.8%, respectively) suggests that thisscore may be more susceptible to oxidation compared to livers with no LHS incidence (p < 0.01). A reduction in total protein inScores 4 and 5, a decline in albumin in Score 5, an elevation in uric acid and gamma-glutamyl transferase (GGT) in Scores 4 and5 as well as a rise in cholesterol and alanine transaminase (ALT) in Score 5 were noted (p < 0.05). Furthermore, there was anincrease in aspartate transferase (AST) levels in 3, 4 and 5 (p < 0.01). A comparison of the antioxidant data indicated a significantenhancement in the levels of superoxide dismutase (SOD), glutathione peroxidase (GSH PX) and total antioxidants in Scores 1–3,compared to the control group. The lowest levels of SOD, GSH PX and total antioxidants were observed in livers scored 4 and 5(p < 0.01). Besides, an increase in total saturated fatty acids and a decrease in total monounsaturated fatty acid (MUFA), n-6, n-3and polyunsaturated fatty acid (PUFA) levels were observed in livers scored 4 and 5 when compared to the other groups (p < 0.05).In conclusion, this study has demonstrated that elevated levels of LHS scores are associated with a detrimental impact on thephysicochemical and oxidative quality of livers and blood serum.