Effect of Nutrifen Supplementation with Different Levels of Metabolic Energy on Growth Performance, Nutrient Digestibility, Meat Quality, Blood Profile, Excreta Microflora, and Excreta Gas Emission of Broiler Chickens

Tuesday, July 22, 2014
Exhibit Hall AB (Kansas City Convention Center)
Hyeyeon Shin , Department of Animal Science, Dankook University, Cheonan, South Korea
Abdolreza Hosseindoust , Department of Animal Science, Dankook University, Cheonan, South Korea
In-Ho Kim , Department of Animal Science, Dankook University, Cheonan, South Korea
Abstract Text:

A total of 816 ROSS 308 both male, female 1-day old, body weight 45.2 ± 0.7 g broiler chicken were used in this 4 weeks trial to evaluate the effect of nutrifen supplemented to broiler chicken diets containing different levels of metabolizable energy. Experimental diets consisted of 2 different levels; high energy diet (HE) and low energy diet (LE, 100kcal lower than HE dietME in HE diet: phase 1, 2950 kcal/kg; phase 2, 3100 kcal/kg) and the experimental treatments were as follows: 1) LCON (low energy diet);2) LNF (LCON + nutrifen 0.09%);3) HCON (high energy diet) and 4) HNF (HCON + nutrifen 0.09%). There were 12 replications and 17 chickens per replication in each treatment. Results showed that HNF treatment enhanced body weight gain (431 vs. 398 g; 1523 vs. 1470 g; P < 0.05) compared with LCON treatment at d 14 and 28. There was no effect (P > 0.05) on carcass and meat quality among treatments. However, yellowness in high energy level diets was increased (HCON and HNF vs. LCON and LNF: 8.53, 8.55 vs. 7.95, 7.69; P=0.036) compared with that in low energy level diets. Digestibility of dry matter in nutrifen treatments was higher (LNF and HNF vs. LCON and HCON: 77.43, 77.70 vs. 74.95, 75.47 %; P=0.025) than that in CON treatments. As to nitrogen digestibility, HNF treatment was higher (67.87 vs. 64.90 %; P<0.05) compared with that in LCON treatment. Total cholesterol in LNF treatment was decreased (106.8 vs. 117.8, 118.9mg/dL; P<0.05) than that in LCON and HCON treatments. Also, total cholesterol of chickens fed with nutrifen diets was decreased (LNF and HNF vs. LCON and HCON: 106.8, 114.1 vs. 117.8, 118.9 mg/dL; P<0.05) compared with those fed with CON diets. Ammonia gas emission in LNF treatment was decreased (34.8 vs. 42.9, 40.3 ppm; P<0.05) than that in HCON and HNF treatments. Moreover, low energy level treatments were decreased (LCON and LNF vs. HCON and HNF: 38.8, 34.8 vs.42.9, 40.3 ppmP=0.003) excreta ammonia gas emission compared with high energy level treatments. No interaction effect was observed in this trial. These results showed that adding nutrifen at a level of 0.09% in diet can improve the growth performance, nutrient digestibility, blood cholesterol contents of broiler chickens.

Keywords: broiler chickens, energy level, growth performance, nutrifen