Effects Of Saccharicterpenin On Growth Performance, Meat Quality And Special Immunity In Broiler

Long-term use of antibiotics has caused drug-resistant bacterials and drug residual in animal food, which directly endanger human health. Researches of natural bioactive substance and its application in animal feeding have been the highlight in the hi-technology research domain in the world. This paper was conducted to evaluate the effects of saccharicterpenin on growth performance, meat quality and spesific immunity in yellow broiler.First trial is to research the effects of ultrafine saccharicterpenin to Lingnan yellow broiler. Ultrafine saccharicterpenin was gained by jet mill. Evaluate the sample through tide suction test, X-ray Diffration, electron microscope particulate and infrared analysis. One-day 360 broilers were randomly assigned to three groups, each had six replications, to make feeding trials for 8 weeks. The second trial is to evaluate the effect of Saccharicterpenin- II on their Performance,meat quality and antibody level in 20-day yellow broilers. 1800 broilers were randomly assigned to three treatments, each consisted of six replications, and added antibiotics(control), Saccharicterpenin- II 250mg/kg + antibiotics(test- I) and Saccharicterpenin- II 500mg/kg (Test- II ) respectively on basic diet. Muscle inosinic acid is analyzed by high performance liquid chromatography (HPLC); Pb and Cd were mensurated by national standard; antibody titer of ND-HI was mensurated by HI (hemagglutination inhibition) test. The third trial is to research the impact of saccharicterpenin concentrate from the seed of Camellia oleifera abel on performance and specific antibody titer in broiler after vaccination of avian influenza (AI), newcastle disease (ND) and infectious bursal disease (IBD). Added 0 mg/kg, 250mg/kg, 500mg/kg, 750mg/kg saccharicterpenin concentrate and 125mg/kg flavomycin on broiler diet. 45 chickens were allotted randomly in each group (including three replications) for 42 days. Antibody titer of AI, ND and IBD were measured by HI (hemagglutination inhibition) test and agar diffusion test (AGP) respectively.Results of first trial showed that survival rate of broiler in 300mg/kg ultrafine saccharicterpenin group was 97.5%, higher than saccharicterpenin and antibiotics by 7.34%,2.63%, respectively; feed gain ratio was lower than by2.75%, 0.69%; Average gain weight was no significant difference between them. Through biology synthesis analysis, brolers in ultrafine saccharicterpenin group get 102.1, which were higher than that in saccharicterpenin group, 99.9.Results of second trial showed that average gain and feed/gain ratio of broilers in the whole period had no significant difference (p>0.05 ) compared in three treatments. Muscle inosinic acid in Saccharicterpenin- II treat was improved by 12.07% compared with antibiotic treatment; and muscle cholesterol,Pb and Cd was decreased by 37.10%,27.83% and 37.96% respectively, all had significant difference (p<0.05) . Serum samples of more than 91g2 HI antibody titer in antibiotics treatment,Saccharicterpenin-II + antibiotics treatments and Saccharicterpenin-II treatment were 56.67%,56.67% and 73.33% respectively through HI test after vaccination of ND vaccine.Results of third trial showed that average gain and feed/gain ratio of 0-21 day broilers in each group had no significant difference. Average gain of 22-42day broilers in 250mg/kg saccharicterpenin concentrate group were respectively increased by 18.57%(p<0.05) and 3.87%(p>0.05) compared with control and flavomycin group. Feed/gain ratio in 500mg/kg saccharicterpenin concentrate group was decreased by 8.86%(p<0.05) compared with control group. Antibody titer of ND-HI on Day 35 in 750mg/kg saccharicterpenin concentrate group after ND vaccination was higher than immune control and flavomycin group by 31.05%(p<0.05),38.21%(p<0.05) respectively. HI antibody titers on Day 7 in 750mg/kg saccharicterpenin concentrate group after AI vaccination was higher than both immune control and flavomycin group. HI antibody titers on Day 14 were increased by 19.11%, 53.14% (P<0.05) respectively. And positive rate of IBD antibody showed no significant difference in five groups.Therefore, the above trial results showed as follows: addition of 300mg/kg ultrafine saccharicterpenin by jet mill could improve the growth performance of yellow broiler, especially the survival rate. Adding 500mg/kg Saccharicterpenin- II on the diet had the capability to stimulate the growth of yellow broiler, effectively improve their meat quality and specific body immunity. Performance of broiler after adding 250mg/kg saccharicterpenin concentrate in feed diet was almost same as adding flavomycin. Adding 750mg/kg saccharicterpenin concentrate could significantly improve antibody titer of ND-HI and AI-HI.