Organic practices and gender are effective strategies to provide healthy pork loin

查看全文 作　　者：Javier Alvarez-[1]Rodríguez;Daniel [1]Villalba;Dolors [1]Cubiló;Daniel [1]Babot;Marc [1]Tor 机构地区：[1]Animal Science Department, University of Lleida-Agrotecnio Center, Lleida 25198, Spain 出　　处：《Journal of Integrative Agriculture》索引2016年第15卷第3期,共10页 基　　金：funded by Catalonian grants to encourage applied research concerning organic food production (Generalitat de Catalunya, AGEC2011-006) 摘　　要：This study evaluated the influence of husbandry(organic feed and management but not free-ranging vs. conventional) and sex(barrows vs. gilts) on pork meat quality. A total of 60 Longissimus thoracis pork muscle samples from different 3-way crossbred genotypes were chosen from 3 conventional and 2 organic pig farms. Technological meat quality was measured at 24 h post-mortem and muscle fatty acid content and composition was analysed by gas chromatography. The loin from organic pigs at 24 h of retail display had lower pH, but it had no detrimental effects on drip loss. All the International Commission on Illumination colour attributes except meat lightness differed between husbandry systems. Moisture and crude protein content were lower whereas intramuscular fat content was greater in organic than in conventional pork. Total saturated fatty acid(SFA), monounsaturated fatty acid(MUFA), polyunsaturated fatty acid(PUFA) and PUFA n-6 contents did not differ between husbandry systems, but total PUFA n-3(mainly C18:3 n-3) were greater in organic than in conventional pork. Sex did not affect ultimate p H or meat colour attributes but barrows showed lower moisture and greater intramuscular fat than gilts. Total SFA and MUFA content were similar but all the PUFA(both n-6 and n-3) were lower in barrows than in gilts. These results suggest that some bioactive compounds from dietary origin, i.e., linolenic acid(C18:3 n-3) content from dietary vegetable oils(soybean or olive olein), might be used to highlight the nutritive value of(not free-ranging) organic pork meat. In addition, gilts were leaner than barrows and showed a more favourable PUFA/SFA ratio. 关 键 词：猪肉品质 性别 多不饱和脂肪酸 单不饱和脂肪酸 肌内脂肪含量 健康 气相色谱分析 自由放养