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The effect of salicorniaherbacea and dendropanaxmorbifera on the growth performance, meat quality, fecal microbial population and fecal noxious gas emission in broilers
This experiment was conducted to examine the effect of Salicornia herbacea and Dendropanax morbifera as a phytogenic additive on performance, carcass traits, fecal microbial population and fecal noxious gas emission of broiler chicks. In this study, 680 one-day old chicks (Ross 308) were allocated to five treatments with eight replicates (17 birds/replication) based on a completely randomized design. Diet was same for all treatments, but 2 different liquid phytogenic additives used as these treatments: CON, basal diet; SAL1, 1cc/l S. herbacea ; SAL2, 5cc/ l S. herbacea; SAL3, 10cc/ l S. herbacea; DPM, 5cc/ l D. morbifera.All broilers were fed maize-soybean meal-based diets that were formulated to meet or exceed the National Research Council (1994)nutrient recommendations. The broilers were weighed and feed intake were recorded on d 1, 7, 21 and 35 for calculating BW gain (BWG), feed intake (FI), and feed conversion ratio (FCR). At d 35, 2 birds were randomly selected from each replication (16 broilers/treatment) and slaughtered by cervical dislocation for meat quality. During d 8-21, broilers fed with SAL2, SAL3 and DPM diets increased (968.3, 987.5, 994.2 vs. 963.4 g; P < 0.05) BWG with those used CON treatment. During d 22-35, broilers fed with SAL1, SAL2 and SAL3 diets increased (729.0, 728.2, 729.3 vs. 684.4 g; P < 0.05) BWG compared with those used CON treatment. Overall, birds in CON treatment had the lowest BWG and highest feed conversion ratio at day 35, compared with SAL1, SAL2, SAL3 and DPM treatments (1820.4 vs. 1887.3, 1885.1, 1892.1, 1873.8 g; 1.468 vs. 1.388, 1.394, 1.383, 1.406; P<0.05). The application of S. Herbacea and D. Morbifera had no significant effect on the organ weights of chicken liver, breast muscle, gizzard, kidneys, or spleen, and was similar among all treatments. The relative weight of abdominal fat, however, was reduced (22.09, 21.30 vs. 29.55 %; P < 0.05) in the treatments which were supplemented with S. Herbacea (SAL2 and SAL3) compared with that of the control. The result of excreta microbial analysis and fecal noxious gas emission did not show any significant effects. In conclusion, the result of this study showed that addition of S. herbacea, D. morbifera have a positive influence on growth performance and they can be considered as a growth promoter substitution for broiler chicks.
Keywords: Broilers, Salicornia herbacea, Dendropanax morbifera, growth performance, meat quality