| Experiment 1 and experiment 2 were included in this paper. The effects of PECE institute the antibiotic(Tylosin 80mg/kg, Sulfadimidine l00mg/kg , Synaprim 20mg/kg, Olaquindox 80mg/kg, Arsanilic Acid l00mg/kg, Aureomycin 120mg/kg) in the diet of swine were investigated in experiment 1. Sixty Durce X Landrace X Large Yorkshire early period growthing finishing pigs (male 39, female 21) with similar age and similar weight(averaged 29kg) were used and divided into three group, that is antibiotic group (basic diets +antibiotic), PECE group (basic diets + 500mg/kgPECE), (antibiotic + PECE) group (basic diets + antibiotic + 500mg/kgPECE) . Appearance, healthy index (percent of culled &died ), weight gain(total weight gain, average daily gain of every period), feed utilization (feed conversion efficiency , ratio of feed to weight gain) back-fat thickness and biochemical parameters in serum(GLU, TP, UN, Ca, P, GH, Insulin, GPT, GOT, IgG) were observed or measured . The results were as followed: (1) three groups all have been culled & died in early experimental period(29-65kg body weight): one died in antibiotic group, four culled & died in PECE group, two culled & died in (antibiotic + PECE) group; no pigs have been culled & died in three groups in later experimental period(65kg body weight to slaugutering). (2) No significent differences in productive performance( body weight gain) and feed utilization efficiency were observed (P>0.05) in early experimental period(29-65kg body weight ); significent difference in productive performance( body weight gain) was observed between the three groups (P<0.01) in later experimental period(65kg body weight to slaughtering ). The highest body weight gain was get at PECE group, the lowest body weight were get at (antibiotic + PECE) group, antibiotic group was in the middle. Significent differences were get in feed utilization efficiency between the three groups( P<0.05 ).(3)No influences were observed on the levelof Ca and P in serum (P>0.05) , but the level of GLU, TP, UN, GH, Ins, GPT, GOT, IgG in serum were affected in some degree (P<0.01 or P<0.05 or P>.05). The biochemical parameters in serum were in accordance with the productive performance. According to these results we can concluded: PECE can not or can not absolutely institute the antibiotic(Tylosin 80mg/kg, Sulfadimidine l00mg/kg , Synaprim 20mg/kg, Olaquindox 80mg/kg) in the diet of swine in early period(29-65kg body weight); It can absolutely institute the antibiotic(Arsanilic Acid l00mg/kg, Aureomycin 120mg/kg) in the diet of swine in later period(65kg body weight to slaughtering). The growth promotion function and feed utilization efficiency improvement of PECE on swine of the later period was higher than that of antibiotic(Arsanilic Acidl00mg/kg, Aureomycin 120mg/kg)( P<0.05 ).The optimal supplemental leves of PECE in diet of Durce X Landrace X LargeYorkshire growthing-finishing pigs (from the body weight 65kg to slaughtering) and theeffects of PECE on meat quality were resrarched in experiment2. Eighty hybridizedfinishing pigs (male 40, female 40) with similar body weight(averaged 55kg) were choosedand divided into 4 treatments at random. The four treatments were (l)basic diet group;(2)(basic diet + 500mg/kg PECE) group; (3)(basal diets +800mg/kg PECE) group; (4)(basicdiet + antibiotic) group. The healthy index (percent of culled & died ) productiveperformance( body weight gain feed / weight ) back-fat thickness and meat qualityparameters( Napole yield drip loss cooking loss) of experimental swine were observed. Theresults show that: (1) Healthy performance of the four groups were good, no died and culledpigs; (2) No signiflcent difference in body weight gain was observed between groups 2 3and 4 (P>0.05) , however they were all higher than group 1. Similarly, no signiflcentdifference in feed conversion was observed between groups 2% 3 and 4 (P>0.05) , but theywere all higher than group 1(P<0.05). (3)Four treatments have no signiflcent effect onNapole yield drip loss cooking loss p...
|
PDF Full Text Request