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Article . 2015
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Carcass yield and proximate composition of bullfrog (Lithobates catesbeianus)

Authors: Ayres, Athos Alexandre Cesnik; Damasceno, Danielle Zanerato; Moro, Evandro Bilha; Maccari, Glaucia Mara Rorato; Nervis, Juliana Alice Lösch; Bittencourt, Fábio;

Carcass yield and proximate composition of bullfrog (Lithobates catesbeianus)

Abstract

O objetivo do trabalho foi comparar cinco diferentes classes de peso de rã-touro (Lithobates catesbeianus), buscando definir o peso ideal de abate para a espécie. Foram utilizados 79 exemplares de rãs-touro, distribuídas em um delineamento inteiramente casualizado (classe 1 251 g (n = 14)), que foram eutanaziados, pesados e eviscerados. Para o rendimento da carcaça foram pesados: tronco limpo, coxas, fígado, patas, pele e cabeça. O tronco limpo foi submetido à análise de composição centesimal. O rendimento de corpo limpo foi em média 49%, sem diferença entre classes (p > 0,05). O rendimento das coxas posteriores foi significativamente maior para a menor classe de peso, e essa classe também apresentou maior porcentual de patas (28,37 ± 0,63 e 9,33 ± 0,21, respectivamente) (p < 0,05). As porcentagens de gordura visceral e pele apresentaram um aumento progressivo concomitante ao peso dos animais, sendo que a classe com indivíduos de 201 a 250 g apresentou os maiores índices (p < 0,05). Na composição centesimal observou-se que indivíduos acima de 251 g, apresentaram menores valores de extrato etéreo e maior valor de proteína (0,99 ± 0,14 e 15,80 ± 0,64, respectivamente) (p < 0,05). Para melhor aproveitamento é recomendado que rãs-touro sejam abatidas com peso superior a 201 g, pois apresentam melhores rendimentos e características da carne.

This work evaluated five classes of weight of bullfrog (Lithobates catesbeianus) seeking to define the ideal slaughter weight for the species. We used 79 bullfrogs, distributed in a completely randomized design (class 1 251 g (n = 14)), which were euthanized, weighted and gutted. For the carcass yield, we weighed the clean torso, thighs, liver, skin and head. The clean torso was subjected to chemical composition analysis. The carcass yield was, on average, 49% with no difference between weight classes (p > 0.05). The yield of posterior thighs was significantly higher for the lower weight class, which also presented higher percentage of paws (28.37 ± 0.63 and 9.33 ± 0.21, respectively) (p < 0.05). The percentages of visceral fat and skin showed a progressive increase along with the weight of the animals; the class with individuals weighing 201-250 grams showed the higher values (p < 0.05). The chemical composition indicated that individuals above 251 grams showed lower values of ether extract and higher values of crude protein (0.99 ± 0.14 and 15.80 ± 0.64, respectively) (p < 0.05). So, it is recommended the slaughter of bullfrogs weighing more than 201 grams, because of better yield and meat quality.

Country
Brazil
Keywords

processamento de carne, raniculture [meat processing], ranicultura, raniculture., meat processing: raniculture, exotic species, SF1-1100, espécie exótica, meat processing, Animal culture

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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