CAJ | 학술논문

试验采用单因素完全随机分组设计，选取800只1日龄罗斯308白羽肉鸡，随机分为4组，每组4个重复，每个重复50羽鸡。对照组饲喂不加酶制剂的玉米-豆粕型基础日粮，试验2～4组分别在基础日粮基础上分别添加250、350、500 g/t脂肪酶。试验期为42 d，分1～21日龄和22～42日龄两个阶段。结果表明：（1）玉米-豆粕型日粮中添加脂肪酶可改善肉鸡的生长性能；（2）脂肪酶添加水平为350 g/t可显著提高1～21日龄白羽鸡饲料转化率（P＜0.05）和22～42日龄白羽鸡平均日增重、饲料转化率（P＜0.05）；（3）饲料中添加350 g/t脂肪酶能显著提高脂肪、磷和干物质的表观利用率（P＜0.05）；（4）添加脂肪酶蛋白质表观利用率有提高的趋势（0.05＜P＜0.10），钙的表观利用率显著降低（P＜0.05）。由此可见，肉鸡玉米-豆粕型日粮中脂肪酶添加水平为350 g/t时效果最佳。
시험채용단인소완전수궤분조설계，선취800지1일령라사308백우육계，수궤분위4조，매조4개중복，매개중복50우계。대조조사위불가매제제적옥미-두박형기출일량，시험2～4조분별재기출일량기출상분별첨가250、350、500 g/t지방매。시험기위42 d，분1～21일령화22～42일령량개계단。결과표명：（1）옥미-두박형일량중첨가지방매가개선육계적생장성능；（2）지방매첨가수평위350 g/t가현저제고1～21일령백우계사료전화솔（P＜0.05）화22～42일령백우계평균일증중、사료전화솔（P＜0.05）；（3）사료중첨가350 g/t지방매능현저제고지방、린화간물질적표관이용솔（P＜0.05）；（4）첨가지방매단백질표관이용솔유제고적추세（0.05＜P＜0.10），개적표관이용솔현저강저（P＜0.05）。유차가견，육계옥미-두박형일량중지방매첨가수평위350 g/t시효과최가。
The e xperiment was applied as a single factor test and completely randomized design.800 one-day-old white feather Ross 308 broilers were randomly divided into four groups,each group contained four replicates of 50 chick-ens.The control group was fed with corn-soybean meal basal diets without enzyme.The test groups 1 ~3 were fed the basal diet of control by adding lipase at the level of 250 g/t,350 g/t and 500 g/t,respectively.The trial period was 42 days which divided into two phases,1 to 21 days of age and 22 to 42 days of age,respectively.The results showed that:(1)The corn-soybean meal diets with lipase could improve the performance of broilers;(2)350 g/t lipase adding level could significantly increase the 1~21 days old feed conversion (P<0.05)and average daily weight gain,feed conversion ratio of 42-day-old (P < 0.05);(3)350 g/t lipase adding level could significantly improve the apparent utilization rate of fat,phosphorus and dry matter(P<0.05);(4)Apparent protein utilization rate tended to increase(0.05<P<0.10),calcium apparent recovery significantly decreased(P<0.05).The results indicated that adding lipase at the level of 350 g/t generated the best results.