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羊驼肉理化性状及食用品质研究 总被引:2,自引:0,他引:2
为评价羊驼肉的食用品质,试验采集9头羊驼肉作为样本,测定了羊驼肉肌红蛋白、系水率、蒸煮损失、剪切力、胶原蛋白、水分含量、粗蛋白、肌内脂肪和粗灰分的含量,初步建立了评定羊驼肉品质的方法。结果表明:羊驼肉的肌红蛋白、系水率、剪切力、胶原蛋白、蛋白质和肌内脂肪含量分别为8.2×10-2μmol/g、75.8%、4.7kg、3.4mg/g、25.6%、0.4%,羊驼肉中肌红蛋白含量低于牛肉;肉品的系水率较高,持水性较强,嫩度较猪肉差,但远优于牛肉;羊驼肉蛋白质和矿物质含量明显高于猪肉、牛肉,但肌内脂肪含量较低。总之,羊驼肉是一种优质的肉类资源,大有利用和开发前景。 相似文献
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The potential for combining living wall and vertical farming systems with aquaponics with special emphasis on substrates 下载免费PDF全文
Aquaponics is a method of food production, growing fish and vegetables in a recirculating aquaculture system. Aquaponics uses the water from the fish to feed the plants in a totally natural way and like hydroponics, aquaponics is considered to be more sustainable as more plants can be grown per square metre compared to normal agriculture. However, as is the case with normal agriculture, in aquaponics plants are grown within horizontally. In aquaponics, using the UVI system, the ratio between fish tanks:filters:plant tanks is 2:1:5 which means that the plant tanks are occupying close to half of the production space. In order to reduce the spatial requirement for plants, which would make production even more sustainable, this research investigates aspects of combining living wall and vertical farming technologies in aquaponics. It is considered that by growing the plants vertically less space would be required. In this research living wall system is investigated but the main focus is on the potentials of using various inert substrates in the living wall systems for vertical aquaponics. The results showed that a pot system performs better in terms of management of the systems. With regard to substrates, horticultural grade coconut fibre and horticultural grade mineral wool outperformed other substrates. 相似文献
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对国内新发现的江河等足类寄生虫病病原的外部形态、生活习性及寄生特性进行了初步观察与描述.该病病原为2种,1种寄生于鱼类鳃腔、胸鳍基部及体表,为纺锤水虱科(Aegidae)海弯水虱属(Alitropus)种类(Alitropus sp.),另1种寄生于虾体表或甲壳内,偶见于鱼类体表、鳃腔与口腔,为珊瑚水虱科(Corallanidae)的种类.此2种寄生虫均属淡水或低盐度型底栖类,可短时间自由游泳、具暂寄生性,4~10月为其繁殖期.Alitropus sp.以吸食宿主体液和组织为生,对宿主无专一选择性,群袭特性明显,未见洞穿宿主体壁现象.由该病原引起的疾病流行高峰季节为7~10月.珊瑚水虱则主要危害软壳及抱卵的宿主,致使其附肢残缺、卵块脱落,或因无法游泳上浮而缺氧死亡. 相似文献
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以柏氏鲤和荷包红鲤抗寒品系杂交F21个家系的92尾个体为材料,用300个微卫星(SSR)标记构建了遗传连锁图谱,其长度为2 471.7 cM,标记间平均间隔为10.75 cM,在此基础上对体长(SL)、体厚(BT)、体高(H)和体质量(W)进行QTL定位分析.共检测到17个QTL区间分布于6个连锁群.4个体长的QTL中,位于LG5、LG7和LG19的QTL为显著水平(P<0.05),位于LG32的QTL为极显著水平(P<0.01),可解释表型变异率为5.14%~10.2%;4个体厚的QTL中,位于LG11(两个QTL)和LG32上的QTL为显著水平(P<0.05),位于LG5的QTL达极显著水平(P<0.01),可解释表型变异率为6.42%~ 8.43%;6个体高的QTL中,LG5,LG10,LG11,LG19,LG32上的QTL为显著水平(P<0.05),LG7上达极显著水平(P<0.01),可解释表型变异率为5.92% ~ 8.95%;3个体质量的QTL中,位于LG5和LG7上的为显著水平(P<0.05),可解释表型变异率为5.55%和8.36%,LG32上达极显著水平(P<0.01),可解释表型变异率为6.44%.本研究采用了两个不同品系的杂交子代为作图群体,丰富了QTL研究群体的多样化,为今后不同鲤品系或品种间的QTL在全基因组水平上的比较和共性QTL的发掘等奠定基础,进而指导鲤分子育种. 相似文献
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The role of inland fisheries in livelihoods, food security and sustainable development is often overshadowed by the higher profile interest in ocean issues. Whilst inland fisheries' catch and contribution to global nutrition, food security and the economy, are less than that of marine fisheries, global‐level comparisons of fish production obscure considerable livelihood impacts in certain countries and sub‐national areas. To highlight these contributions, this paper synthesizes recent data and innovative approaches for assessing such livelihood contributions and their importance in countries with limited access to ocean resources and aquaculture. Inland fisheries are crucial for many socially, economically and nutritionally vulnerable groups of people around the world, but the challenges in monitoring inland fisheries preclude a complete understanding of the magnitude of their contributions. This situation is rapidly improving with increasing recognition of inland fisheries in development discourses, which has also encouraged research to enhance knowledge on the importance of inland fisheries. We review this work, including collated information published in a recent Food and Agriculture Organization report, to provide an up to date characterization of the state of knowledge on the role of inland fisheries. 相似文献
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本文报导虎嘉鱼(Hucho bIeekeri K.)的食性及食物消化的研究结果,其食性以水生昆虫和鱼类为主食。虎嘉鱼是较有经济价值的鱼类,这一研究对虎嘉鱼的开发和利用及人工养殖提供了科学依据。 相似文献