CAJ | 학술논문

　　为了研究复合酸化剂对黄羽肉鸡生长性能及消化道pH值的影响。试验选择1日龄黄羽肉鸡160只，随机分成4个处理组，每个处理组4个重复，每个重复10只鸡，各处理组分别在基础日粮中添加0.0%、0.2%、0.5%、0.8%的由乳酸、柠檬酸和富马酸组成的复合酸化剂的日粮，试验期56天。结果表明：日粮中添加不同水平复合酸化剂能降低肌胃、腺胃、十二指肠、空肠和盲肠的pH值及料重比，提高平均日增重，添加量为0.8%时显著(P<0.05)降低42日龄十二指肠和盲肠pH值，并显著(P<0.05)提高1~56日龄的平均日增重；添加量为0.5%时显著(P<0.05)降低28~42日龄料重比。说明复合酸化剂能改善黄羽肉鸡消化道pH值和生长性能，最佳添加量为0.5%。
　　위료연구복합산화제대황우육계생장성능급소화도pH치적영향。시험선택1일령황우육계160지，수궤분성4개처리조，매개처리조4개중복，매개중복10지계，각처리조분별재기출일량중첨가0.0%、0.2%、0.5%、0.8%적유유산、저몽산화부마산조성적복합산화제적일량，시험기56천。결과표명：일량중첨가불동수평복합산화제능강저기위、선위、십이지장、공장화맹장적pH치급료중비，제고평균일증중，첨가량위0.8%시현저(P<0.05)강저42일령십이지장화맹장pH치，병현저(P<0.05)제고1~56일령적평균일증중；첨가량위0.5%시현저(P<0.05)강저28~42일령료중비。설명복합산화제능개선황우육계소화도pH치화생장성능，최가첨가량위0.5%。
The experiment was conducted to study the effects of compound acidifiers on growth performance and gastrointestinal pH value in yellow-feathered broilers. One hundred and sixty one-day-old yellow-feathered broilers were randomly allocated to 4 experimental groups with 4 replicates of 10 broilers each. All treatment groups were fed dietary acidifiers 0%, 0.2%, 0.5%, 0.8% in the basal diet composed of lactic acid, citric acid and fumaric acid. The trial lasted for 56 days. The results showed that pH value of glandular stomach, gizzard, duodenum, jejunum, cecum and feed to gain ratio were decreased and average daily gain was increased by different levels of compound acidifiers. The pH value of duodenum and cecum at 42-day-old were significantly decreased (P<0.05) and average daily gain at 1-56 days was significantly increased (P<0.05) by added 0.8% compound acidifiers and feed to gain ratio at 28-42 days was significantly decreased (P<0.05) by added 0.5% compound acidifiers. It indicated that compound acidifiers could improve gastrointestinal pH value and growth performance in yellow-feathered broilers and the optimal supplementation of compound acidifier was 0.5 %.