不同油脂来源及添加水平对肉鸡颗粒饲料质量、生长性能和肉品质的影响  

Effects of Different Oil Sources and Addition Levels on Pellet Feed Quality,Growth Performance and Meat Quality of Broilers

作　　者：李香月 杨洁 李军国[1,2] 李俊 姚婷[3] 董颖超 牛力斌[1] 商方方[1] LI Xiangyue;YANG Jie;LI Junguo;LI Jun;YAO Ting;DONG Yingchao;NIU Libin;SHANG Fangfang(Institute of Feed Research,Chinese Academy of Agricultural Sciences,Beijing 100081,China;Laboratory of Feed-Derived Factor Risk Assessment for Animal Product Quality and Safety,Ministry of Agriculture and Rural Affairs,Beijing 100081,China;Beijing Veterinary Drug&Feed Monitoring Center,Beijing 110122,China)

机构地区：[1]中国农业科学院饲料研究所,北京100081 [2]农业农村部动物产品质量安全饲料源性因子风险评估实验室,北京100081 [3]北京市兽药饲料监测中心,北京110122

出　　处：《动物营养学报》2024年第3期1612-1627,共16页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：“十四五”国家重点研发计划项目(2021YFD1300300);中国农业科学院创新工程项目(CAAS⁃ASTIP⁃2022⁃FRI⁃08)。

摘　　要：本试验旨在研究不同油脂来源及添加水平对肉鸡颗粒饲料质量、生长性能、肉品质及血清生化指标的影响。试验选取1日龄白羽肉鸡960只,随机分为6组,每组8个重复,每个重复20只鸡。采用双因素试验设计,饲粮中油脂来源分别为大豆油、膨化大豆和脂肪粉,油脂添加水平分别为3%和5%。试验期42 d,分为前期(1~21日龄)和后期(22~42日龄)2个阶段。结果表明:1)在颗粒饲料质量方面,脂肪粉组成型率、颗粒耐久性和硬度显著高于其他2组(P<0.05);相比于3%添加水平,5%添加水平显著降低了颗粒饲料成型率、颗粒耐久性和硬度,且除脂肪粉组外,豆油组和膨化大豆组颗粒饲料颗粒耐久性显著降低(P<0.05),并均低于90%。2)在肉鸡生长性能方面,与大豆油组相比,5%脂肪粉组前期料重比显著降低(P<0.05);膨化大豆组后期和全期平均日增重显著降低(P<0.05)。3)在肉品质和血清生化指标方面,与大豆油组相比,脂肪粉组肉鸡胸肌剪切力和24 h滴水损失显著降低(P<0.05),膨化大豆组胸肌24 h滴水损失显著降低(P<0.05);膨化大豆组和脂肪粉组血清三碘甲状原氨酸(T3)含量和T3/甲状腺素(T4)值显著提高(P<0.05)。相比于3%添加水平,5%添加水平显著降低了肉鸡胸肌剪切力(P<0.05)。综上所述,添加5%脂肪粉能够提高肉鸡颗粒饲料质量、肉品质以及甲状腺的功能活性。This experiment was conducted to study the effects of different oil sources and addition levels on pellet feed quality,growth performance,meat quality and serum biochemical indices of broilers.A total of 960 whitefeathered broilers of 1dayold were randomly divided into 6 groups with 8 replicates per group and 20 broilers per replicate.In a twofactor experimental design,the dietary oil sources were soybean oil,extruded soybean and fat powder,and the oil addition levels were 3%and 5%,respectively.The experiment lasted for 42 days and was divided into two stages as earlier stage(1 to 21 days of age)and later stage(22 to 42 days of age).The results showed as follows:1)in terms of pellet feed quality,the pelleting rate,pellet durability index and hardness in fat powder group were significantly higher than those in the other 2 groups(P<0.05);compared with 3%addition level,5%addition level significantly decreased the pelleting rate,pellet durability index and hardness of pellet feed,and except for fat powder group,the pellet durability index of pellet feed in soybean oil group and expanded soybean group was significantly decreased(P<0.05),and both were lower than 90%.2)In terms of growth performance of broilers,compared with soybean oil group,the ratio of feed to gain in earlier stage in 5%fat powder group was significantly decreased(P<0.05);the average daily gain in later stage and the whole stage in expanded soybean group was significantly decreased(P<0.05).3)In terms of meat quality and serum biochemical indexes,compared with soybean oil group,the shear force and 24 h drip loss of breast muscle of broilers in fat powder group were significantly decreased(P<0.05),and the 24 h drip loss of breast muscle in expanded soybean group was significantly decreased(P<0.05);the serum triiodothyronine(T3)content and T3/thyroxine(T4)ratio in expanded soybean group and fat powder group were significantly increased(P<0.05).Compared with 3%addition level,5%addition level significantly decreased the shear force of breast muscle of bro

关 键 词：脂肪粉 膨化大豆 颗粒饲料质量 肉鸡 生长性能 肉品质 血清生化指标 

分 类 号：S816[农业科学—饲料科学]