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Poedeiras comerciais em fase de postura: Comparação de três sistemas de alojamento
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Foi realizado um trabalho com o objetivo de comparar a produtividade de três sistemas de alojamento diferentes: Jaula, Solo e Ar Livre. Foram utilizados 4 bandos de jaula,4 bandos de solo e 2 bandos de ar livre. O alimento distribuído às aves na fase de recria e na fase de produção tinha composição igual em todos os bandos. O programa de luz e as restantes condições de maneio a que foram sujeitas as galinhas nas duas fases foram semelhantes.As galinhas provenientes dos bandos de solo foram as que obtiveram maiores % de mortalidade (quase 0,30 %) e também uma maior variação da mesma. Os bandos de jaula tiveram uma % de mortalidade superior aos bandos de ar livre, mas valores inferiores aos bandos de solo (≤0,30 %). A % postura semanal dos bandos foi idêntica, atingindo valores acima dos 90 % em plena produção (após o arranque da postura). Os bandos de solo tiveram a postura abaixo do standart durante e após o pico de postura, ou seja, inferior aos bandos de jaula e ar livre (≤ % mortalidade standart). O peso do ovo (gr) foi homogéneo nos três bandos, não existindo oscilações entre as semanas e não existindo valores diferentes entre os eles. O peso do ovo (gr) em plena produção correspondeu entre 63 e 65 gr. O consumo de alimento (kg) foi maior nos bandos de ar livre (0,12 gr por galinha) situando-se acima do consumo médio de alimento por galinha, seguindo-se dos bandos de solo e por último, os bandos de jaula. A média do IC foi maior nos bandos de jaula (2,20), e depois nos bandos alternativos, solo (2,01) e ar livre (1,92). A % de ovos traídos foi maior nos bandos de solo, chegando aos 1,40 % e foi menor nos bandos de ar livre. O custo de produção (€/ovo) em plena produção foi idêntico nos 3 bandos situando-se entre os 0,05 e 0,06 €/ovo. Os bandos de jaula tiveram um custo inicial mais elevado seguindo-se dos bandos de ar livre. Os parâmetros com diferenças estatisticamente significativas foram: a percentagem de mortalidade semanal, a percentagem de ovos triados semanal e a massa de ovo, para 95% de IC. O rendimento (€/galinha) nos bandos de ar livre foi 7 vezes superior ao bando de jaula e 3 vezes superior aos bandos de solo. O rendimento nos bandos de ar livre foi de 0,70 (€/galinha), nos bandos de solo foi de 0,25 (€/galinha) e nos bandos de jaula foi de 0,10 (€/galinha). Os bandos de ar livre foram, em geral, os que obtiveram melhores resultados nos parâmetros produtivos avaliados.
A study was carried out with the objective of comparing the productivity of three different housing systems: Cage, Ground and Outdoor. Four cage flocks, 4 ground flocks and 2 outdoor flocks were used. The food distributed to the birds in the rearing phase and in the production phase had the same composition in all flocks. The light program and the other management conditions to which the hens were subjected in the two phases were similar. Hens from the soil flocks had the highest percentage of mortality (almost 0.30 %) and also the greatest variation in mortality. Cage flocks had a higher % mortality than outdoor flocks but lower values than soil flocks (≤0.30%). The % weekly laying of flocks was identical, reaching values above 90% in full production (after the start of laying). Ground flocks had a posture below standard during and after peak laying, lower than cage and open air flocks (≤ % standard mortality). Egg weight (gr) was homogeneous in the three flocks, with no fluctuations between weeks and no different values between them. The egg weight (gr) in full production corresponded to between 63 and 65 gr. Food consumption (kg) was higher in free range flocks (0.12 g per hen), being above the average food consumption per hen, followed by soil flocks and lastly by cage flocks. The IC was higher in cage flocks (2.20), and then in alternative flocks, ground (2.01) and outdoors (1.92). The % of betrayed eggs was higher in the soil flocks, reaching 1.40% and it was lower in the free-range flocks. The cost of production (€/egg) in full production was identical in the 3 flocks, between 0.05 and 0.06 €/egg. Cage flocks had a higher initial cost followed by free range flocks. The parameters with statistically significant differences were: percentage of weekly mortality, percentage of eggs screened weekly and egg mass for 95% CI. The yield (€/hen) in the free-range flocks was 7 times higher than the cage flock and 3 times higher than the solo flocks. The yield in the free-range flocks was 0.70 (€/hen), in the solo flocks it was 0.25 (€/hen) and in the cage flocks it was 0.10 (€/hen). The open air flocks were, in general, the ones that obtained better results in the obtained productive parameters.
A study was carried out with the objective of comparing the productivity of three different housing systems: Cage, Ground and Outdoor. Four cage flocks, 4 ground flocks and 2 outdoor flocks were used. The food distributed to the birds in the rearing phase and in the production phase had the same composition in all flocks. The light program and the other management conditions to which the hens were subjected in the two phases were similar. Hens from the soil flocks had the highest percentage of mortality (almost 0.30 %) and also the greatest variation in mortality. Cage flocks had a higher % mortality than outdoor flocks but lower values than soil flocks (≤0.30%). The % weekly laying of flocks was identical, reaching values above 90% in full production (after the start of laying). Ground flocks had a posture below standard during and after peak laying, lower than cage and open air flocks (≤ % standard mortality). Egg weight (gr) was homogeneous in the three flocks, with no fluctuations between weeks and no different values between them. The egg weight (gr) in full production corresponded to between 63 and 65 gr. Food consumption (kg) was higher in free range flocks (0.12 g per hen), being above the average food consumption per hen, followed by soil flocks and lastly by cage flocks. The IC was higher in cage flocks (2.20), and then in alternative flocks, ground (2.01) and outdoors (1.92). The % of betrayed eggs was higher in the soil flocks, reaching 1.40% and it was lower in the free-range flocks. The cost of production (€/egg) in full production was identical in the 3 flocks, between 0.05 and 0.06 €/egg. Cage flocks had a higher initial cost followed by free range flocks. The parameters with statistically significant differences were: percentage of weekly mortality, percentage of eggs screened weekly and egg mass for 95% CI. The yield (€/hen) in the free-range flocks was 7 times higher than the cage flock and 3 times higher than the solo flocks. The yield in the free-range flocks was 0.70 (€/hen), in the solo flocks it was 0.25 (€/hen) and in the cage flocks it was 0.10 (€/hen). The open air flocks were, in general, the ones that obtained better results in the obtained productive parameters.
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Keywords
Sistemas de alojamento Galinha Bando Jaula Parâmetros produtivos