Objective:  The present study aimed to investigate the effect of liquid enzyme supplementation to drinking water on growth performance, plasma lipids and muscle fatty acids profile in broilers.
Methods: One hundred and twenty one-day old broilers were divided into four groups (30 birds), each group included three replicates of 10 chicks. The first group was control without any additives supplementation in feed or water. The second, third and fourth groups were supplemented in drinking water with 2, 4, and 8 ml/ L water of Non-Starch Polysaccharides (NSP) liquid enzyme, respectively.
Results: Body weight and body weight gain were increased by 8 ml/ L water liquid enzyme supplementation. Feed intake was decreased and thus, feed conversion was significantly improved. The addition of NSP liquid enzymes in water did not affect the carcass, muscle relative weights, while abdominal fat relative weight was significantly decreased by the addition of 8ml/L NSP enzymes in drinking water. Spleen weight was increased. Plasma total cholesterol, LDL-cholesterol, glutamic oxalacetic transaminase (GOT) and glutamate pyruvate transaminase (GPT) were significantly decreased following the addition of 8ml/L NSP enzymes. Plasma HDL-cholesterol was significantly increased. Liver MDA and muscle palmitic acid concentration were decreased, however, alpha-linolenic acid was increased by liquid enzyme supplementation.
Conclusion: It could be concluded that liquid enzyme supplementation to drinking water improved growth performance, modified plasma lipids and muscle fatty acids profile in broilers.