Document Type : Full paper (Original article)
Institute of Animal Rearing Technologies, Lithuanian University of Health Sciences, Veterinary Academy, Tilžės str. 18, LT-47181, Kaunas, Lithuania
Background: Lipids play a vital function in bird’s body and to improve lipids utilization and absorption in bird’s digestive system are suggested emulsifiers. Aims: To compare effects of lecithin and lysophosphatidylcholine emulsifiers on broiler chicken’s productivity traits and physiological indicators: blood plasma parameters, intestine traits, short-chain fatty acids profile in caecum’s content, caecum’s villus height and crypt depth, their ratio. Methods: 900 Ross 308 broiler chickens were assigned into 3 groups with 6 replicate pens and fedwith standard compound diet (SCD) and with standard compound diet supplemented with 0.05% lecithin (LEC) and 0.05% lysophosphatidylcholine (LPC). Body weight, average daily gain, daily feed intake, feed conversion ratio and dry matter content of litter recorded. At the end of the trial 10 birds from each group randomly selected and euthanized. Blood samples collected and blood plasma analysis performed; intestinal samples were collected post-mortem, then intestinal traits and short-chain fatty acids profile were determined, intestinal histomorphometric measurements were made. Results: LPC inclusion significantly increased broilers body weight and average daily gain at fifth week of age (p<.05). LEC increased LDL/C concentration in blood plasma (p<.05). Butyric and isovaleric acids concentrations were significantly increased by LPC and reduced by LEC (p<.05). LEC and LPC caecum’s villus heights were significantly higher (p<.05). Caecum’s crypt depth was higher in LEC, compared to SCD (p<.05). Conclusion: Lysophosphatidylcholine as emulsifier can improve broilers weight, but lecithin showed better effects on broilers physiological indicators by improving intestinal mucosal absorption area in caecum.