Browsing by Subject "Broiler"

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    Effect of natural extracts obtained from food industry by-products on nutritional quality and shelf life of chicken nuggets enriched with organic Zn and Se provided in broiler diet
    (Elsevier, 2020-01-22) Lorena Martínez Zamora; Ros Berruezo, Gaspar; Nieto Martínez, Gema; Martínez Zamora, Lorena; Tecnología de Alimentos, Nutrición y Bromatología
    This study investigated the influence of an organic mineral-supplemented broiler diet on the quality of nuggets. The resulting chicken nuggets were enriched with inorganic and organic forms of Zn and Se. The nuggets were processed by incorporating extracts from food industry by-products (rosemary [RH and RL], hydroxytyrosol [HYT], pomegranate [P], grape [GS], and Harpagophytum [H]). The physiochemical, microbiological, and sensory characteristics of the chicken nuggets were evaluated over a 12-month period of frozen storage. The addition of natural extracts did not affect the pH, proximate composition, or color (CIELab) of the nuggets among samples. However, significative differences were found between month of analysis (range from pH 6.16 to 6.63; luminosity from 62.51 to 84.74; redness from 0.16 to 7.14; and yellowness from 10.80 to 33.77). In addition, the combination of phenolic compounds with Zn and Se retarded microbial growth and reduced protein and lipid oxidation, thus maintaining the sensory quality and extending the shelf life of this product. For instance, the combination of RL 1 GS reduced in 75% the microbiological growth regarding the control sample (C), while samples that incorporated RH 1 P or HYT 1 P 1 H presented 50% less than C. In addition, upon only incorporating organic minerals Zn and Se, microbiological deterioration is reduced in 15%. This mix was significantly effective at reducing the oxidative reactions of lipids and proteins by 40% and 50%, as measured after 9 and 12 mo of frozen storage, respectively. The addition of the natural extracts and Zn and Se did not adversely affect the acceptability of the meat product.
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    Evaluating the efficacy of cinnamaldehyde and Echinacea purpurea plant extract in broilers against Eimeria acervulina
    (Elsevier, 2011-09-15) Orengo, Juan; Ruiz de Ybáñez Carnero, María del Rocío; Madrid, Josefa; del Río, Laura; Catalá-Gregori, Pablo; García, V.; Hernández, Fuensanta; Buendía Marín, Antonio Julián; Sanidad Animal
    Coccidiostats could be phased out as feed additives before 1 January 2013 for public health and food safety reasons, and, as a replacement, bioactive compounds found in plants are currently being investigated since they are more likely to be found acceptable by consumers. The aim of our study was to evaluate the effect of cinnamaldehyde (CIN) and Echinacea purpurea plant extract (EP) as additives by analyzing the performance traits, oocyst excretion and intestinal lesions following experimental infection with Eimeria acervulina. A total of 72 Ross male broilers were raised from 1 to 35 d and randomly assigned to four dietary treatments: control, without additives (C); 150 mg kg−1 cinnamaldehyde (CIN); 1000 mg kg−1 E. purpurea plant extract (EP); 150 mg kg−1 cinnamaldehyde plus 1000 mg kg−1 E. purpurea plant extract (CIN + EP). At 25 d, 12 chickens per treatment were orally infected with E. acervulina. Coccidia infestation led to lower performance but with no significant differences between the infected groups. Oocyst output reached its peak from 6 to 9 d post-infection in all treatments. At duodenal level, gross lesion scores were lower for cinnamaldehyde diets (P < 0.05). A similar trend was observed in the microscopic lesion scores, with a nonsignificant reduction as a result of cinnamaldehyde addition (P > 0.05). Scoring methods for macro- and microscopic lesions showed a positive linear relationship (G = +0.70). Further studies are necessary to assess the possible anticoccidian action of the cinnamaldehyde and its value as an alternative or adjunct in therapeutic or prophylactic strategies.