This experiment was conducted to investigate the effect of dietary supplementation of the Black Soldier Fly(BSF) larvae on growth performance, carcass rate, and fatty acid profile of chicken meat in broiler chicks. Four hundred eighty 1-d-old broilers(Ross 308) were distributed into 3 treatments with 4 pens at 30 birds per replicate. Treatments were corn-soybean meal based broiler diet (control) and the basal diet replaced with BSF at the level of 3 and 6% respectively. Viability was not different significantly. Body weight gain was higher in control than other treatments. Feed intake was not statistically different of treatments. Feed conversion ratio was lower in ontrol than other treatments. Relative weight of breast meat was significantly increased in all treated groups than in control. But, another relative weights of chicken meat cuts (thigh, wing, neck, back) were not significantly different among the groups. In conclusion, it could be suggested that dietary supplementation of Black Soldier Fly larvae could beneficially improved the performance on broiler

Our previous study demonstrated that fermented four-herb combination (Ulgum, Yagmomil, Maesil and Bokbunja) with probiotics (Saccharomyces cerevisiae, Lactobacillus acidophilus, Bacillus subtilis) (hence, this additives was designated PFH) have immune enhancing and antibacterial effects in broiler chickens. The aims of the present study were to investigate the effects of PFH on growth performance and meat quality of broiler chickens. Twenty-day-old Ross broiler chickens were fed with or without PFH for 2 weeks. Body weight gain of the 2% PFH-fed group was significantly increased compared with those of the control group (*P<0.05). Moreover, body weight gain of the 1% PFH-fed group was also showed a increased tendency compared with the control group, although the difference was not significant (P=0.06). However, no significant difference in feed intake was observed among the groups. Feed conversion ratio of the 2% PFH-fed group was significantly decreased compared with those of the control group (*P <0.05). In addition, feed conversion ratio of the 1% PFH-fed group was also showed a slightly decreased tendency compared with the control group, although the difference was not significant (P=0.07). However, no significant differences in the proximate composition (moisture, crude fat, crude protein and crude ash) and the physico-chemical index (cooking loss, shearing force, water holding capacity and pH) were found among the groups. In addition, succulence, tending and flavor in meat of all 3 groups were also not different. Taken together, these findings suggest the possibility that PFH could be used as the alternative of antibiotic growth promoters by improving the performance of broiler chickens.

This study examined the effects of different levels of evening primrose oil(EPO) on the accumulation of γ-fatty acids in broiler meat. Six hundred one-day-old male chicks (Ross strain) from commercial broilers were divided randomly into 6 groups × 4 repeat pens. The broilers were fed experimental diets containing 4.0% tallow(control), 0.5% EPO, 0.7% mixed oil(EPO 70 : soy bean oil 30), 1.5% EPO, 3.0% EPO or 4.0% EPO for 35 days. There was a significant difference in body weight gain between the control and treatment groups except for the 0.5% EPO group (p<0.05). There was a significant difference in the percentage of thigh and breast weight against the carcass weight between control and treatment groups except for the 0.5% EPO group in the thigh and 0.5% EPO and 4.0% EPO groups in the breast weight (p<0.05). The saturated fatty acid levels of the skin and breast muscle lipid of the broilers fed diets containing EPO were significantly lower than that of the control group (p<0.05), while the level of unsaturated fatty acid was significantly higher than that of the control group (p<0.05). The γ-fatty acid(GLA, gamma-linolenic acid, 18:3n-6) level was particularly higher in the chicken meat lipids from the broilers fed EPO than in the control group (p< 0.05). This shows that feeding EPO to chicks can produce novel functional broiler meat that is enriched in gamma-linolenic acid.

This study was conducted to evaluate the effect of dietary Yanggu original white kaolin supplementation on the growth performances, nutrients utilizability and meat composition of broiler. A total of 260 broiler chicks was alloted to 5 treatments with 4 replications and 13 chicks per replication. In addition to control group that fed diet without any kaolin supplementation, the treatments are designated by dietary supplementation as follows; white kaolin 400 mesh 1%(T1), white kaolin 10,000 mesh 1%(T2), white kaolin 400 mesh 0.8% + probiotics 0.2%(T3) and kaolin rizen(T4). The specific volume of 10,000 mesh white kaolin was higher than that of 400 mesh white kaolin (p<0.05) with no difference in pH between two different size white kaolins. Pellet durability of kaolins supplemented diet was improved, regardless of fat addition, compared to that of no kaolin supplemented diet. Both weight gain and feed intake of broilers in all the kaolin supplemented treatments were higher than that of control during d 0~21 period (p<0.05) but with no differences during d 22~40, On the other hand, kaolin supplementation into the control diet did not affect F/G of young broiler during d 1~21. Overall F/G of broiler was decreased by kaolin supplementation. Although there was no difference on ether extract, crude ash, total CHO and dry matter utilizabilities among all treatments, both crude protein and energy utilizabilities were improved by kaolin supplementation. Crude protein content of both broiler thigh and breast was the lowest in the kaolin and probiotics combined supplemented group(T3). In conclusion, the supplementation of physico-chemically treated white kaolin does affect growth performances, nutrients utilizability and meat composition of broilers. Therefore, the kaolin can be considered as a beneficial feed additive to improve broiler productivity.

This study was conducted to investigate the effects of adding Tenebrio molitor L Powder to broiler feed on fatty acid profiles in broiler breast meat. In total, 180 broiler chicks (1-day old Arbor Acres) were included. The birds were randomly divided into control and treatment groups, with 3 replicate subgroups each(30 birds per subgroup), and fed a diet for 35 days without (control) or with 1% Tenebrio molitor L powder (treatment). Among individual fatty acids, addition of Tenebrio molitor L. powder resulted in slightly higher C18:1n-9, C20:3n-3 and C20:3n-6 contents, and lower C18:2n-6 content compared withcontrols (p<0.05). No remarkable differences in total SFA and total USFA contents were found between groups. In conclusion, inclusion of Tenebrio molitor L. in broiler diets did not improve overall fatty acid profiles.

The characteristics of the components related to the meat taste of the commercial broiler (CB) and the Korean native chicken (KNC) were compared. The breast meat from CB showed higher amounts of C16:1 and C18:2 but lower amounts of C16:0 and C22:6. The thigh meat from CB showed a higher amount of C18:1 but lower amounts of C16:0, C18:0, C20:4, and C22:6. The flavor- and taste-contributing amino acids, including aspartic acid, threonine, serine, glycine, alanine, tyrosine, lysine, histidine, and arginine, were significantly higher in the KNC breast meat, but the level of amino acids in the thigh meat were not different between the two breeds. The measurement of the volatile compounds revealed that CB contains much higher volatile compounds compared to KNC in their fresh breast and thigh meat. Both in the breast and thigh meat, however, the amount of flavor compounds increased significantly after cooking; as such, KNC turned out to have more flavor compounds than CB.