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| 1 | Linoleic acid metabolic pathway allows for an efficient increase of intramuscular fat content in pigs显示文摘Background: Intramuscular fat(IMF) content is a relevant trait for high-quality meat products such as dry-cured ham,but increasing IMF has the undesirable correlated effect of decreasing lean growth.Thus,there is a need to find selection criteria for IMF independent from lean growth.In pigs,the proportion of linoleic(C18:2) and arachidonic(C20:4) acids decline with fat deposition and therefore they can be considered as indicators of fatness.The aim of this research was to estimate the genetic variation for C18:2 and C20:4 in IMF and their genetic correlations with IMF and lean growth traits,with the objective to assess their potential as specific biomarkers of IMF.The analysis was conducted using a full-pedigreed Duroc resource line with 91,448 records of body weight and backfat thickness(BT) at 180 days of age and 1371 records of fatty acid composition in the muscle gluteus medius.Results: The heritability estimates for C18:2 and C20:4 in IMF,whether expressed in absolute(mg/g of muscle) or in relative(mg/g of fatty acid) terms,as well as for their ratio(C20:4/C18:2),were high(> 0.40),revealing that the C18:2 to C20:4 pathway is subjected to substantial genetic influence.Litter effects were not negligible,with values ranging from8% to 15% of the phenotypic variance.The genetic correlations of C18:2 and C20:4 with IMF and BT were negative(-0.75 to-0.66,for IMF,and-0.64 to-0.36,for BT),if expressed in relative values,but almost null(-0.04 to 0.07),if expressed in absolute values,except for C18:2 with IMF,which was highly positive(0.88).The ratio of C20:4 to C18:2 also displayed a stronger genetic correlation with IMF(-0.59) than with BT(-0.10).Conclusions: The amount of C18:2 in muscle can be used as an IMF-specific biomarker.Selection for the absolute amount of C18:2 is expected to deliver a similar response outcome as selection for IMF at restrained BT.Further genetic analysis of the C18:2 metabolic pathway may provide new insights into differential fat deposition among adipose tissues and on candidate genes for molecular markers targeting specifically for one of them. | Sofia Gol Rayner Gonzalez-Prendes Lluis Bosch Marc Tor Josep Reixach Ramona N.Pena Joan Estany | 2019 | Journal of Animal Science and Biotechnology2019，10，3： | 3 |
| 2 | Mapping mountain areas: learning from Global, European and Norwegian perspectives显示文摘Defining the spatial extent of mountain areas has long been a challenge. In the present century, the availability of digital elevation models(DEMs) incorporated into geographic information systems(GIS) has allowed the definition of mountain areas based on topographic and other criteria. This paper presents the various delineations of mountains that have been prepared at three scales – global, regional(Europe), and national – and explores the reasons and processes leading to these delineations, and how they have been used. A detailed case study is then presented for Norway. Overall, two types of approaches to mapping mountains have been taken: first, considering mountains per se, based on elevation and/or topography; second, considering them among other categories, e.g., landforms or biogeographical, environmental or landscape zones. All attempts to map mountain areas derive essentially from the objectives of those commissioning and/or undertaking the work; a unitary definition remains unlikely. | Martin F.PRICE Tor ARNESEN Erik GL?ERSEN Marc J.METZGER | 2019 | Journal of Mountain Science2019，16，1： | 3 |
| 3 | Organic practices and gender are effective strategies to provide healthy pork loin显示文摘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. | Javier Alvarez-Rodríguez Daniel Villalba Dolors Cubiló Daniel Babot Marc Tor | 2016 | Journal of Integrative Agriculture2016，15，3： | 0 |
| 4 | β受体阻滞剂(普萘洛尔)治疗复杂的面部血管瘤显示文摘【结论】为检测β受体阻滞剂治疗血管瘤远期效果的安全性和有效性,将其与其他药物进行前瞻性对照研究显然是有必要的。采用皮质类固醇治疗复杂的血管瘤,可能无反应或产生有害后遗症,因此,需要把注意力放到非传统疗法上。然而,这并不是对已报道的采用传统治疗标准的成功案例的否定。口服皮质类固醇仍是目前可以接受的药物治疗标准;然而,此类药物既不是完全良性,也不是普遍有效。 | Jugpal S. Arneja Peggy N. Pappas Tor A. Shwayder Marc L. Cullen Cristie J. Becker Fasahat H. Hamzavi John D. Roarty David N. Madgy John D. Baker 魏峰 高景恒 张晨 | 2012 | 中国美容整形外科杂志2012，23，3： | 0 |
| 5 | Erratum to:Mapping mountain areas:learning from Global,European and Norwegian perspectives显示文摘The article Mapping mountain areas:learning from Global,European and Norwegian perspectives,written by Martin F.PRICE,Tor ARNESEN,Erik GL0ERSEN and Marc J.METZGER,was originally erroneously published electronically on the publisher’s internet portal(currently SpringerLink)on May 21st 2018 without open access. | Martin F.PRICE Tor ARNESEN Erik GLΦERSEN Marc J.METZGER | 2022 | Journal of Mountain Science2022，19，6： | 0 |
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