To study the effects of Robdosia serra (Maxim.) Hara on the growth performance and serum biochemical parameter of threeyellow chickens, 210 onedayold threeyellow chickens were divided randomly into 7 groups,and each group had 3 duplicate.GroupⅠwas given basal diet.The groupsⅡand Ⅲ were added 0.2% enrofloxacin and 1% ShuangHuangLian powder to the basal diet respectively. The groups Ⅳto Ⅶ were added 1%,2% and 4% Robdosia serra (Maxim.) Hara to basal diet respectively.After 49 days of feeding，the growth performance and serum biochemical parameter were determined.The results showed that,compared to the control group,added 2% Robdosia serra (Maxim.) Hara into the basal diet could remarkably increase the daily gain from 13.1% to 22.7%,and decrease the ratio of feed/gain from 8.1% to 14.2%, and the effect was better than ShuangHuangLian and enrofloxacin. 2% Robdosia serra (Maxim.) Hara could also increase the content of serum total protien, globulin and glucose,maintain the content of serum albumin at a stable level,and decrease the content of serum total cholesterol of threeyellow chickens which were 35 days old.

Karytype analyses were carried out in 309 pigs which were produced from three hybridized combinations of 13/17 Robertsonian translocation pigs by means of culturing whole peripheral blood.〖JP2〗 Three kinds of karyotypes appeared in their hybrids the normal karyotype pigs (2n=38), the heterozygous pigs (2n=37) and the homozygous pigs (2n=36). No mutation in exon 1 of porcine somatostatin gene was detected by means of PCRSSCP analysis in hybrids of three kinds of hybridized combinations while two single nucleotide polymorphisms (T520C,G521T) in 266～602 bp fragment of porcine somatostatin gene was detected by using the same method. But only two genotypes were detected: AA and AB. The result of genetic polymorphism analyses showed that the genotype frequency of AA(the limit of frequency was 0.58～0.77)and the allele frequency of A (the limit of frequency was 0.79～0.90)were both obviously higher than AB(0.23～0.42)and B(0.10～0.21) in hybrids of three kinds of hybridized combinations and pigs of different karyotypes. The genotype frequency of AB in the heterozygous pigs (0.42)were much higher than the genotype frequency of AB in the nomal pigs(0.25) and the homozygous pigs(0.40).The result of 2 test showed that genotype of all the populations reached HardyWeinberg equilibrium（P>0.05）. 

On the basis of foot and mouth disease virus (FMDV) inactivated bivalen
t(O type, AsiaⅠ type) vaccines(called conventional FMDV vaccines blew ) using 206 adjuvant (France SEPPIC company), a double adjuvant inactivated bivalent FMDV vaccines was designed, it possessed stronger delayed release effect than conventional FMDV vaccines. According to the lymphocytes proliferation reaction (MTT), LPELISA and challenge protection experiments,the lymphocytes stimulation indices (SI=1.235±0.060) of double adjuvant vaccines group was higher than conventional FMDV vaccines group (SI=1.115±0.035) and control group (SI=1.010±0.045); compared with conventional FMDV vaccines group and control group, the celluar celluar immunity level of double adjuvant vaccines group was significant than conventional one (P＜0.05) and significant stronger than control one (P＜0.01). However, as full dose immunity, antibody titer of conventional FMDV vaccines and double adjuvant vaccines group had little difference, 1/3 dose and 1/9 dose groups were especially lower than above two groups for less antigen and strong delayed release effect. The results of challenge protection efficiency showed that conventional adjuvant vaccines group was a little higher than the FMDV vaccines group, the former O strain was 11.84 PD50 and AsiaⅠ strain was 9.0PD50; the the latter O strain and AsiaⅠ strain all were 9.0 PD50. The results suggested that double adjuvant vaccines could induce better cellular immunity, possessed stronger delayed release effect and supported better challenge protection efficiency than conventional FMDV vaccines.