许明曙;华颖;刘国良;林豪;于震;陈玉;李俊跃;王腾浩;

• 1:浙江青莲食品股份有限公司浙江省肉品加工与质量控制工程技术研究中心

摘要(Abstract)：

试验旨在研究不同膨化亚麻籽日粮饲喂程序对生长育肥猪生长性能、屠宰性能、脂肪酸沉积及免疫功能的影响。选取初始体重为(36.76±0.49)kg的杜×巴×嘉生长育肥猪120头，随机分为4组，每组3个重复，每个重复10头，试验期90 d。对照组全程饲喂基础日粮，T30、T60和T90组先饲喂基础日粮并分别于屠宰前30、60、90 d开始饲喂5%膨化亚麻籽日粮。结果表明：与对照组相比，不同膨化亚麻籽日粮饲喂程序对生长性能和屠宰性能均无显著影响，但均提高了背最长肌和背膘ω-3多不饱和脂肪酸(ω-3 PUFA)含量、降低了ω-6/ω-3 PUFA比值(P<0.05)，且改善程度随着饲喂时间的增加而增加(P<0.05)；各组间总蛋白(TP)、白蛋白(ALB)、谷丙转氨酶(ALT)、谷草转氨酶(AST)和碱性磷酸酶(ALP)等血清生化指标均无显著差异；与对照组相比，T30和T60组血清补体3(C3)含量均升高(P<0.05),T60组血清补体4(C4)、免疫球蛋白M(IgM)和免疫球蛋白G(IgG)含量均升高(P<0.05)。综上，屠宰前90 d开始饲喂添加5%膨化亚麻籽的日粮不影响生长肥育猪生长性能、屠宰性能和机体免疫功能，并可显著提高背最长肌和背膘ω-3PUFA含量，ω-6/ω-3 PUFA比值可达到中国营养学会推荐范围。

关键词(KeyWords)： 生长育肥猪;膨化亚麻籽;饲喂程序;生长性能;脂肪酸沉积

Abstract:

Keywords:

基金项目(Foundation): 浙江省科技重点研发计划项目(2021C02008);; 浙江省“十四五”农业(畜禽)新品种选育重大科技专项(2021C02068-2)

作者(Authors): 许明曙;华颖;刘国良;林豪;于震;陈玉;李俊跃;王腾浩;

DOI: 10.19556/j.0258-7033.20211112-04

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