Rendimento De Carcaças Em Linhagens Comerciais De Frangos De Corte

Abstract

O presente trabalho de pesquisa visou básicamente o estudo do rendimento de partes da carcaça com e sem ossos entre as cinco linhagens de frango de corte mais utilizadas hoje no Brasil (Ross Cobb, Hubbard, Arbor Acres e Isa Vedette) com o intuito de identificar a linhagem de maior potencial de rendimento assegurando suas vantagens em relação às outras linhagens comerciais de frango de corte. O experimento foi conduzido na Cooperativa Agrícola Consolata Ltda. (COPACOL), sendo constituído por 5 tratamentos, com 4 repetições, sendo que cada repetição continha 160 aves. Os tratamentos foram dispostos em T1 (Ross), T2 (Cobb), T3 (Hubbard), T4 (Arbor Acres), T5 (Isa Vedette); a ração comercial foi a de uso normal na integração avícola. Foram analisados ganho de peso, consumo de ração, conversão alimentar, peso de carcaça, viabilidade do lote e índice de eficiência. A linhagem Ross mostrou-se superior às demais com resultados significativamente melhores (P < 0,10), a segunda melhor linhagem testada foi a Cobb sendo inferior apenas à Ross. As linhagens Hubbard, Arbor Acres e Isa Vedette praticamente não apresentaram diferenças entre si, sendo que a Isa e Arbor Acres são as que apresentaram uma tendência a piores resultados. Abstract The main purpose of this research was to identify the best lineage of poultry among the main ones currently used today in Brazil (Ross, Cobb, Hubbard, Arbor Acres, Isa Vedette) in terms of quality of the carcass and of the bone removed parts. The experiment was carried out at Cooperativa Agrícola Consolata Ltda. (COPACOL). Five groups of 160 broilers each, with four repetitions of the same experimental conditions, were assembled. The groups were disposed as T1 (Ross), T2 (Cobb), T3 (Hubbard), T4 (Arbor Acres), and T5 (Isa Vedette). Commercial ration was used throughout the experiment. Weight gain, ration consumption, food conversion, carcass weight, viability and efficiencies were recorded and analyzed. Ross lineage showed to be superior in regard to the other ones, with significant results (p < 0.10), followed by Cobb and Hubbard lineages, the two latter ones showing no differences among them, while Isa Vedette and Arbor Acres, show a tendency for less satisfactory results.

Chicken (Gallus gallus domesticus L.) Cuts Yield Specifics of Cobb 500 Slow and Hubbard Flex Hybrids

“…It was possible to observe that the CB-Slow birds presented a better average yield for Group II, i.e., breast. These data is supported by literature, where authors such as [9,14,12], also reported high yields for hybrid CB. On the other, in the present study, the highest yield Groups I -wing (drummette, middle joint and tip) and some of the Group III -legs, i.e., drumstick (whole and bone), thigh bone and feet, as well as other cuts -back, were obtained by birds of the HB-Flex.…”

“…On the other hand, for the HB commercial hybrid, the authors reported best weights and yields for legs (thigh and drumstick). In results reported by [12] the authors did not observe a significant difference between those hybrids (for different cuts) because they utilized different parameter (P > 0.10). However if it was observed at P<0.05, significant differences between those cuts would be observed, as reported, only for boneless legs, by the authors.…”

“…On the other, in the present study, the highest yield Groups I -wing (drummette, middle joint and tip) and some of the Group III -legs, i.e., drumstick (whole and bone), thigh bone and feet, as well as other cuts -back, were obtained by birds of the HB-Flex. Flemming and Winkelstroter [12,14] also found high yield of wing and legs for HB. It was considered the yield of other cuts (tenderloin / drumstick) obtained in the current study, of no significant difference for CB-Slow and HB-Flex (P < 0.05).…”

“…However, there is a lack of information on specific characteristics among each lineage [10,11,3,12,9,[13][14][15].…”

Avaliação do desenvolvimento da discondroplasia tibial em frangos de corte submetidos à dieta com 25 hidroxicolecalciferol: características ultraestruturais

“…A linhagem Ross foi escolhida como tratamento controle por ter sido a mesma utilizada por Flemming et al (1999). …”