126 research outputs found
Sensory profiles of breast meat from broilers reared in an organic niche production system and conventional standard broilers
BACKGROUND: Breast meat from broilers produced in very different production systems may vary considerable in sensory profile, which may affect consumer interests. In this study the aim was to evaluate differences in the sensory profiles of breast meat from five broiler products: two conventional standard products (A and B) and three organic niche genotypes (I657, L40 and K8) reared in an apple orchard.
RESULTS: Thirteen out of 22 sensory attributes differed significantly between the products. The aroma attributes âchickenâ, âbouillonâ and âfatâ scored highest and the âiron/liverâ aroma lowest for the niche products. The meat was more âtenderâ, âshortâ and âcrumblyâ and less âhardâ and âstringyâ in the standard products than in one or more of the niche products. Product âI 657â was less âjuicyâ than the rest. Products âI 657â and âL 40â were more âcohesiveâ and tasted more âsourishâ and less of âsweet/maizeâ than the standard products. The âoverall likingâ score was significantly higher for the âK 8â product than for the âStandard Aâ and âL 40â products. The âoverall likingâ score was significantly correlated with the scores for aroma and taste of âchickenâ,
âumami/bouillonâ, âiron/liverâ and âfatâ aroma.
CONCLUSION: The sensory profiles differed particularly between conventional standard broilers and organic niche broilers, although differences were also found between breeds. The present study indicates that aroma and taste attributes were more important for the assessors than meat âtendernessâ for the overall liking of broiler meat.
�c 2011 Society of Chemical Industry
Assessment of a global positioning system to evaluate activities of organic chickens at pasture
The aims of the present study were to assess the use of a global positioning system (GPS) monitoring device to evaluate the activities of organic chickens at pasture. Two hundred male birds from 2 strains (100 slow-growing and 100 fast-growing birds) were reared separately in 4 indoor pens (0.10 m2/bird), each with access to a grass paddock (10 m2/bird; 2 replications/ genotype). During the last week of age (from 73 to 80 d of age), the kinetic activity of chickens was monitored by behavioral observations (n = 20; focal bird sampling method) and a GPS (n = 10; Super Trackstick, Atex International, Route d'Esch, Luxembourg) equipped with a universal serial bus port for quick viewing on Google Earth's 3-D model, giving information concerning the date, hour, environmental conditions, and coordinates of monitored birds. Based on the focal bird sampling method, fast-growing birds tended to stay indoors rather than forage in the pasture, whereas slow-growing birds spent more time outdoors (P < 0.05). Moreover, visual observations confirmed GPS records, whereas slow growing birds were observed to perform more active behaviors stand less, and spend more time outdoors than indoors. Based on GPS tracks, slow-growing chickens covered an average daily distance of 1,230 m, whereas fastgrowing birds covered only 125 m. In conclusion, GPS appears to be a suitable way to evaluate the kinetic activity of chickens. We also concluded that locomotor activity, which requires a high energy consumption, is low in fast-growing birds compared with slow-growing ones, allowing the fast-growing birds to reallocate energy to productive traits
Comparison of growth performance and carcass traits of Japanese quails reared in conventional, pasture, and organic conditions
The influence of providing perches and string on activity levels, fearfulness and leg health in commercial broiler chickens
Economic, ecological, and social performance of conventional and organic broiler production in the Netherlands
NĂveis nutricionais de cĂĄlcio para aves de corte ISA Label criadas sob semiconfinamento
Effect of probiotic preparation for chemical composition of meat cocks different combinations of hybrid chicks
Avaliação do desempenho e do rendimento de carcaça de quatro linhagens de frangos de corte em dois sistemas de criação
High-throughput sequencing technology to reveal the composition and function of cecal microbiota in Dagu chicken
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