在有机生产体系中，日粮的季节变化对泽西奶脂肪酸组成有影响

IF 0.7 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Journal of Central European Agriculture Pub Date : 2022-01-01 DOI:10.5513/jcea01/23.2.3502

Nikolina Kelava Ugarković, I. Petrović, Z. Prpić, I. Vnučec, M. Konjačić

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引用次数: 0

摘要

本研究的目的是确定以饮食为基础的季节变化对克罗地亚山区泽西牛奶脂肪酸组成的影响。在以总混合比(TMR)为基础、中间和牧场为基础的饲粮中收集散装牛奶样品(200 mL)。采用气相色谱法测定了牛奶中的脂肪酸组成。从人体营养角度考虑，放牧日粮对泽西乳脂肪酸组成有积极影响。在放牧日粮中，泽西奶牛的饱和脂肪酸含量较低(P <0.05)，多不饱和脂肪酸含量较高(P <0.05)。即在单项脂肪酸方面，放牧日粮的C16:0含量低于TMR和中间日粮，C18:2n-6、C18:3n-6和共轭亚油酸(CLA)含量高于TMR和中间日粮(P <0.05)。在以牧场为基础的饮食中产生的牛奶可以是饮食中有益健康的多聚脂肪酸的宝贵来源。

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Seasonal changes in diet affect fatty acid composition of Jersey milk in organic production system

The aim of this study was to determine effect of diet-based seasonal changes on fatty acid composition of Jersey milk in mountain region of Croatia. Bulk milk samples (200 mL) were collected during total-mixed ratio (TMR)-based, intermediate and pasture-based diet. Fatty acid composition of milk was determined by gas-chromatography. We found that pasture-based diet has positive effect on fatty acid composition of Jersey milk considering human nutrition. During pasture-based diet, Jersey cows produced milk with lower ( P <0.05) saturated fatty acid and higher ( P <0.05) polyunsaturated fatty acid content. Namely, regarding individual fatty acids, milk produced during pasture-based diet had lower ( P <0.05) C16:0 and higher ( P <0.05) C18:2n-6, C18:3n-6 and conjugated linoleic acid (CLA) content than milk produced during TMR and intermediate diet. Milk produced during pasture-based diet can be valuable source of health-beneficial PUFA in diet.

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来源期刊

Journal of Central European Agriculture AGRICULTURE, DAIRY & ANIMAL SCIENCE-

CiteScore

1.40

自引率

14.30%

发文量

审稿时长

50 weeks

期刊介绍： - General agriculture - Animal science - Plant science - Environment in relation to agricultural production, land use and wildlife management - Agricultural economics and rural development