Effects of dietary supplementation of emulsifier and carbohydrase on the growth performance, serum cholesterol and breast meat fatty acids profile of broiler chickens.
A total of 540 2-day-old male Ross 308 broilers were used in a 35-day experiment and were randomly divided into five treatments: (i) NC (low energy); (ii) PC (high energy diet); (iii) P1 (NC + 0.1% carbohydrases); (iv) P2 (NC + 0.05% emulsifier); and (v) P3 (NC + 0.1% carbohydrases + 0.05% emulsifier). From days 0 to 21, body weight gain in PC and P3 treatments increased (P < 0.05) compared with NC treatment. The chicks fed PC, P1, P2 and P3 improved (P < 0.05) feed conversion ratio compared with the NC treatment throughout the whole experiment. Abdominal fat weight was heavier (P < 0.05) in PC, P2 and P3 treatments than in NC and P1 treatments. On day 35, serum total cholesterol and low density lipoprotein cholesterol concentration were higher (P < 0.05) and high-density lipoprotein cholesterol was lower (P < 0.05) in NC and P2 treatments than in PC, P1 and P3 treatments. The concentration of oleic acid, linoleic acid and total unsaturated fatty acids were highest (P < 0.05) in PC than in the other treatments. In conclusion, the results indicate that low energy density diet had lower growth performance, while the inclusion of emulsifier and carbohydrases in low energy diets can partially improve growth performance.
Institute of Animal Nutrition, Key Laboratory for Animal Disease-Resistance Nutrition of China, Ministry of Education, Sichuan Agricultural University, Chengdu, China.
Jian Ping
JP
Wang
College of Life Science and Technology, Southwest University for Nationalities, Chengdu, China.
Zheng Fan
ZF
Zhang
Department of Animal Resource & Science, Dankook University, Cheonan, South Korea.
Lei
L
Yan
Department of Animal Resource & Science, Dankook University, Cheonan, South Korea.
In Ho
IH
Kim
D000821:Animal Feed; D000818:Animals; D002645:Chickens / Q000254:growth & development* / Q000378:metabolism; D002784:Cholesterol / Q000097:blood*; D019587:Dietary Supplements; D045703:Emulsifying Agents / Q000008:administration & dosage / Q000494:pharmacology*; D002149:Energy Intake; D005227:Fatty Acids / Q000032:analysis / Q000378:metabolism*; D006026:Glycoside Hydrolases / Q000008:administration & dosage / Q000494:pharmacology*; D008297:Male; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal / Q000378:metabolism*; D015430:Weight Gain / Q000187:drug effects
D045703:Emulsifying Agents; D005227:Fatty Acids; D002784:Cholesterol; D006026:Glycoside Hydrolases; C019822:carbohydrase
broiler; carbohydrase; cholesterol; emulsifier; fatty acid profile