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The role of consumers' culinary skills on purchasing cues of pork, with emphasis on niche demands (outdoor husbandry and/or certified organic), was assessed in crosscountry regions of Spain (Catalonia and Aragon) and Portugal (North). A sample of 974 respondents answered an on-line survey with questions regarding consumer purchasing habits, product involvement and intrinsic and credence attributes. They also chose between two contrasting boneless pork loins and express willingness to pay (WTP) for different product scenarios with different pig farm facilities and for organic pork standards. Two optimal segments were identified based on foodrelated habits: 'uninvolved' and 'innovative cook lovers', both similarly balanced across socio-demographics, score for credence attributes or consumer involvement dimensions. Overall mean WTP premium across countries was 11.8% for marbled pork, 20.0% for outdoor pork and 24.3% for organic logo stamp. Credence cues of pork claiming health issues (absence of antibiotics and hormone residues) rather than consumers' culinary skills defined the WTP for niche pork in these regions. (Grunert, Sonntag, Glanz-Chanos, & Forum, 2018). Consumers' food-related lifestyles may affect purchasing cues of meat. Convenience-oriented consumers dislike food shopping, display less enjoyment in meal preparation, have fewer cooking skills, are accustomed to eating alone, and breaking down meals, whereas consumers that produce (or prosumers) receive utility in cooking (Casini et al., 2019). These consumer segments expressed differences in WTP for saving time in cooking, but little research is carried out to assess the effects of consumer culinary skills on purchasing cues of niche pork

Niche production is intended to produce premium pork, but several husbandry factors may affect the meat fatty acid composition and aroma. Fatty acid profile (by GC-FID) of raw meat and volatile compounds (by SPME-GC–MS) of cooked meat were analysed in loin samples from two pig genetic types-75% Duroc (Du) and 50% Pietrain (Pi) rossbreds that were slaughtered at different weights (90 kg and 105 kg, respectively) to achieve similar target carcass fatness, and the outcome carcasses were balanced for lean grade groups (<60% or ≥60% lean) within genotypes. Genetic type did not affect fatty acids (FA) profile of meat. The leaner meat had lower C12:0 and C20:3n − 3, lower saturated fatty acids (SFA) and higher MUFA/SFA ratio content than the fattier meat. Short-chain alcohols were lower in Pietrain and in leaner pork compared to the samples from Duroc crossbreds and fattier pork. A greater amount of hexane,2,4,4-trimethyl (an aliphatic hydrocarbon) but lower carbon disulphide (sulphur compound) content was detected in pork from leaner compared to fattier pork. Higher aromatics hydrocarbons were exclusively associated with Duroc crossbreds, and lower aliphatic hydrocarbons with pigs classified as fattier. Most of the volatile compounds detected in the present study came from lipid oxidation.

Està subjecte a una llicència de Reconeixement-NoComercial-SenseObraDerivada 3.0 de Creative Commons Effects of dietary roughage on organic pig performance, behaviour and antioxidants accretion in perirenal adipose tissue

This study aimed to explore dietary replacement soybean meal (SBM) with local pea seeds (PS-L) and the effects of surgically castrated (CM) or immunocastration (IM) in heavy male pigs, on growth performance, feeding behaviour, and tail and ear lesions. Four treatments were arranged factorially (2 × 2), with two sexes and two dietary treatments (96 pigs in eight pens). The inclusion of PS-L was 25%, 30%, and 40% during three phases (40–80 kg, 80–110 kg, and 110–140 kg, respectively). No difference in average daily feed intake (ADFI) and body-weight (BW) between PS-L and SBM could be demonstrated (p > 0.05), but PS-L diet decreased the average daily gain (ADG) at 110–140 kg of BW (p < 0.001) and increased feed conversion rate (FCR) (p < 0.05). The ADG was higher (p < 0.01) in IM than CM in all fattening periods, and the FCR in IM was lower (p < 0.05) than in barrows. IM pigs had lower dressing percentage than CM (p < 0.01). Pigs fed a PS-L diet ate faster but increased their passive behaviour compared with those fed SBM. In conclusion, the PS-L diet did not reduce BW and improved passive behaviour, and IM grew more efficiently, regardless of diet.

In organic pig husbandry, the use of roughage is mandatory as dietary supplement. This study investigated the effects of oat silage on the fatty acid composition, in entire males and gilts, as well as indole and skatole levels in perirenal adipose tissue of entire males. Entire males and gilts (forty-five to forty-eight pigs/sex) were assigned to two dietary roughage feeds (control with straw vs. oat silage). There was no significant effect of silage or sex on total SFA and MUFA in pork fat. However, the oat silage increased the total PUFA n-3 and decreased the PUFA n-6/n-3 ratio. The content of boar taint compounds (skatole and indole) in the entire male pigs did not differ between diets, although human nose scoring rejected in a greater extent more pork fat from entire males supplemented with oat silage, compared with those only supplied with straw. Approximately 50% of the entire males (90 to 97 kg of carcass) had low skatole values (≤0.1 μg/g), that were below the range of boar taint detection, regardless of the feeding regime. This finding indicates that more studies should be performed to avoid the problem of taint detection in entire males under organic production.

El principal desafío en alimentación para porcino ecológico es garantizar que los alimentos de la dieta cumplan los requerimientos nutricionales, en particular en proteína y perfil de aminoácidos, al finalizar la moratoria de uso de hasta un 5% de alimentos no ecológicos en las raciones, prevista para 2020. Así, este trabajo se planteó para proponer una estrategia de alimentación y analizar la viabilidad nutricional, económica y ambiental de formular raciones con alimentos alternativos, producidos localmente. Se seleccionó una muestra representativa de productos de cultivos ecológicos, de acuerdo al Reglamento (CE) 834/2007 y 889/2008, de fábricas de piensos y productores de Cataluña y zona próxima: cereales (n=22), subproductos de cereales (n=4) y concentrados de proteína vegetal (n=25). Las dietas se formularon para las diferentes fases fisiológicas, ajustadas a las recomendaciones nutricionales españolas (FEDNA, convencional) y francesas (ITAB, ecológicas). Se formularon dietas prescindiendo de la soja (torta de presión y soja integral) según recomendaciones nutricionales francesas y utilizando fuentes proteicas adaptadas al clima mediterráneo (alverjón, habas, guisantes y alholva) y cereales de invierno (centeno, trigo, cebada y triticale). Los impactos ambientales de las dietas (por unidad de pienso compuesto producido) en cuanto a demanda de fósforo, uso de energía no renovable, eutrofización, acidificación, cambio climático y ocupación de tierra, evaluados mediante el análisis de ciclo de vida de la base de datos francesa ECOALIM (2016), resultan mayores en lechones y menores en cerdas gestantes, y notablemente superiores si se formula según FEDNA vs. ITAB. En la valoración económica de las dietas (compra frente a autoproducción), resultaría más rentable un modelo de negocio con integración agropecuaria.