乳酸菌对饲喂黄曲霉毒素B_1日粮的肉鸡生长性能、养分消化率和屠宰性能的影响

Effect of Lactic Acid Bacteria on the Growth Performance,Nutrient Apparent Digestibility and Slaughter Performance of Broilers Fed Diets Contaminated with AFB_1

本试验旨在研究黄曲霉毒素B1 （AFB1）日粮添加乳酸菌（LAB）对肉鸡的生长性能、养分消化率及屠宰性能的影响.试验选用1日龄AA肉鸡公鸡240只,随机分为4个处理组,每个处理6个重复,每个重复10只鸡.正对照组：无AFB2日粮;负对照组：1～21 d：正对照组日粮＋40 μg/kg AFB1,22～42 d：正对照组日粮＋80 μg/kgAFB1;LAB组：负对照组日粮＋1.5×1011 CFU/kg LAB;HSCAS组：负对照组日粮＋3 g/kg HSCAS.试验期42 d.试验结果显示,负对照组日粮显著降低了肉鸡平均日采食量和体增重（P＜0.05）,显著提高了料重比（P＜0.05）,添加LAB和HSCAS均明显改善了生产性能,且LAB组的效果优于HSCAS组.1～21 d时,与负对照组相比,添加LAB干物质、能量、粗脂肪、钙和磷的表观消化率分别提高9.6％（P＜0.05）、9.5％ （P＜0.05）、10.l％（P＜0.05）、15.2％ （P＜0.05）和18.9％ （P＜0.05）,添加HSCAS能将干物质、能量、粗脂肪和磷的表观消化率提高9.7％（P＜0.05）、6.6％（P＜0.05）、6.3％（P＜0.05）和17.4％ （P＜0.05）,且LAB组能量和钙的表观消化率显著高于HSCAS组（P＜0.05）.LAB组的全净膛率和胸肌率也显著高于HSCAS组（P＜0.05）.综上所述,在AFB1污染日粮中添加LAB制剂,对肉鸡的生产性能、养分表观消化率和屠宰性能均具有显著的改善作用,其作用效果显著优于HSCAS脱霉剂.

This study was aimed to investigate the effects of lactic acid bacteria （LAB） on the growth performance,nutrient apparent digestibility and slaughter performance of broilers fed diets contaminated with AFB1.A total of 240 male AA broilers at one day old were randomly allotted into 4 groups with 6 replicates per group and 10 chicks per replicate.Positive control group,no AFB1 in the diet;Negative control group,1-21 d,positive control group diet＋40μg/kg AFB1,22-42 d,positive control group diet ＋ 80 μμg/kg AFB1;LAB group,negative control diet ＋ 1.5 × 1011 CFU/kg LAB;HSCAS group,negative control diet＋ 3 g/kg HSCAS.The trial lasted for 42 days.The results showed that the average daily feed intake and body weight gain in negative control group were significantly decreased （P＜0.05）,and F/G was significantly increased （P＜ 0.05）,and the diets supplemented with LAB or HSCAS could significantly improved the growth performance （P＜0.05）,and the LAB had better effects than HSCAS.Comparing with negative group at 1 to 21 days,the nutrient apparent digestibility of DM,energy,EE,Ca and P were increased by 9.6％ （P＜0.05）,9.5％ （P＜0.05）,10.1％ （P＜0.05）,15.2％ （P＜0.05） and 18.9％ （P＜0.05） in LAB group,respectively.Whereas the nutrient apparent digestibility of DM,energy,EE and P were increased by 9.7％ （P＜0.05） 、6.6％ （P＜0.05） 、6.3％ （P＜0.05） and 17.4％ （P＜0.05） in HSCAS group,respectively.And the nutrient apparent digestibility of energy,Ca,eviscerated yield percentage and breast muscle percentage in LAB group were significantly higher than that in HSCAS group （P＜0.05）.LAB used in the present trial could significantly improved the growth performance,nutrient apparent digestibility and slaughter performance of broilers fed diets contaminated with AFB1,and had better effects than HSCAS.