畜牧兽医学报 ›› 2021, Vol. 52 ›› Issue (8): 2213-2222.doi: 10.11843/j.issn.0366-6964.2021.08.014

• 营养与饲料 • 上一篇    下一篇

副干酪乳杆菌KL1制剂对蛋鸡生产性能、蛋品质及鸡蛋中胆固醇含量的影响研究

李昊1, 刘慧1*, 张红星1, 谢远红1, 熊利霞1, 连正兴2   

  1. 1. 北京农学院食品科学与工程学院 微生态制剂关键技术开发北京市工程实验室 食品质量与安全北京实验室 农产品有害微生物及农残安全检测与控制北京市重点实验室, 北京 102206;
    2. 中国农业大学动物科技学院, 北京 100193
  • 收稿日期:2020-11-20 出版日期:2021-08-23 发布日期:2021-08-21
  • 通讯作者: 刘慧,主要从事食品营养与生物技术研究,E-mail:mxdlh1963@163.com
  • 作者简介:李昊(1996-),男,河南郑州人,硕士生,主要从事食品营养与生物技术研究,E-mail:1415021212@qq.com
  • 基金资助:
    北京市属高等学校高层次人才引进与培养项目(CIT&TCD20140315);科技部国家科技重大专项(2014ZX08008-005)

Effects of Lactobacillus paracasei KL1 Preparation on Production Performance, Egg Quality and Cholesterol Content in Eggs of Laying Hens

LI Hao1, LIU Hui1*, ZHANG Hongxing1, XIE Yuanhong1, XIONG Lixia1, LIAN Zhengxing2   

  1. 1. Beijing Key Laboratory of Agricultural Product Detection and Control for Spoilage Organisms and Pesticides, Beijing Laboratory of Food Quality and Safety, Beijing Engineering Laboratory of Probiotics Key Technology Development, Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China;
    2. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
  • Received:2020-11-20 Online:2021-08-23 Published:2021-08-21

摘要: 旨在利用从藏灵菇中筛选的可显著降低血清胆固醇和耐受胃肠道逆环境的副干酪乳杆菌KL1菌株制备微生态制剂,探讨该制剂在低胆固醇鸡蛋生产中对蛋鸡生产性能、蛋品质及鸡蛋中胆固醇含量的影响。本试验将120只30周龄健康状态良好且产蛋率接近的农大3号矮小蛋鸡随机分为低、中、高剂量试验组和对照组,每组5个重复,每个重复6只蛋鸡,试验组在基础饲粮中分别添加105、106、107 CFU·(只·d)-1副干酪乳杆菌KL1微生态制剂,对照组饲喂基础饲粮,连续饲喂10周。对蛋鸡的生产性能、蛋品质和鸡蛋中的胆固醇进行测定和计算。结果表明:1)中剂量组的蛋鸡饲养日产蛋率与对照组相比有显著提高(P<0.05);2)与对照组相比,中、高剂量组的蛋壳强度、蛋壳厚度和血清钙水平有显著提高(P<0.05),蛋黄相对重有极显著提高(P<0.01);3)低、中、高剂量组的蛋黄胆固醇含量及血清总胆固醇(TC)、甘油三酯(TG)含量均极显著低于对照组(P<0.01);高剂量组的血清高密度脂蛋白胆固醇(HDL-C)和低密度脂蛋白胆固醇(LDL-C)含量分别极显著高于对照组(P<0.01)和显著低于对照组(P<0.05)。在饲粮中添加副干酪乳杆菌KL1微生态制剂可显著提高蛋鸡生产能力和蛋壳品质,降低鸡蛋中胆固醇含量,总体来看,以106 CFU·(只·d)-1作为最终添加剂量效果最佳,在低胆固醇鸡蛋的生产中具有良好的应用价值。

关键词: 副干酪乳杆菌, 蛋鸡, 低胆固醇鸡蛋, 生产性能, 蛋品质

Abstract: This study aimed to evaluate the effect of microecological preparation of Lactobacillus paracasei KL1 screened from Tibetan kefir, which could significantly reduce serum cholesterol and tolerate the gastrointestinal environment, on production performance, egg quality and cholesterol levels of laying hens producing low cholesterol eggs. A total of 120 30-week-old healthy Nongda No.3 laying hens with similar laying rate were randomly divided into 4 groups with 5 replicates per group, and 6 hens per replicate. Hens in control group were fed the basal diet, hens in low, medium and high dose groups were fed the basal diet supplemented with different doses of Lactobacillus paracasei KL1 microecological preparation(105, 106,107CFU·(hen·d)-1), which lasted for 10 weeks. The production performance of laying hens, egg quality and cholesterol content in eggs were measured and calculated. The results showed that:1) the hen-day laying rate of the laying hens in the medium dose group was significantly higher than that of the control group (P<0.05). 2)Compared with the control group, the eggshell strength, eggshell thickness and serum calcium level of hens in the medium and high dose groups significantly increased (P<0.05), and the relative weight of egg yolk extremely significantly increased (P<0.01). 3)The contents of egg yolk cholesterol and serum TC and TG of hens in the low, medium and high dose groups were extremely significantly lower than that of the control group (P<0.01). The serum HDL-C levels of hens in the high-dose group was extremely significantly higher than those in the control group (P<0.01), and the serum LDL-C levels of hens in the high-dose group was significantly lower than that of in the control group (P<0.05). Lactobacillus paracasei KL1 has significant effects on laying rate, egg quality, egg yolk cholesterol levels and serum cholesterol levels. The results indicate that adding Lactobacillus paracasei KL1 probiotics to the diet can significantly improve the production capacity and eggshell quality of laying hens, and reduce the cholesterol content in eggs. In general, 106 CFU· (hen·d)-1 is the best dosage, which has good application value in the production of low cholesterol eggs.

Key words: Lactobacillus paracasei, laying hen, low cholesterol eggs, production performance, egg quality

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