Efeitos do genótipo e da condição corporal sobre o desempenho de cordeiros terminados em confinamento

Cartaxo, Felipe Queiroga; Sousa, Wandrick Hauss de; Cézar, Marcílio Fontes; Neto, Severino Gonzaga; Cunha, Maria das Graças Gomes

doi:10.1590/s1516-35982008000800021

Cited by 25 publications

(12 citation statements)

References 20 publications

(7 reference statements)

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“…Os resultados de GMD foram superiores ao relatado por garCia et al (2004) de 0,210 k/dia em animais mestiços Texel, Ile de France e Bergamácia confinados, e próximos ao relatado por Cartaxo et al (2008) de 0,280 a 0,290 kg/dia em mestiços Dorper confinados.…”

Section: Resultsunclassified

Uso de duas fontes de ureia na dieta de cordeiros mestiços terminados em sistema semi-intensivo

Gallo¹,

Pereira²,

Reis³

2015

Bol. Ind. Anim.

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O estudo comparou o efeito de grupo genético e dieta com duas fontes de ureia sobre características de desempenho, carcaça e carne de cordeiros. O experimento foi realizado na FAZU, Uberaba, MG. Utilizaram-se 12 cordeiros mestiços Dorper e 12 mestiços Texel, oriundos de cruzamento de matrizes Santa Inês com reprodutores puros de origem de cada raça. Os cordeiros foram divididos em dois grupos e mantidos em piquetes de capim Ãries (Panicum maximum cv. Ãries), recebendo concentrado contendo ureia pecuária ou ureia encapsulada, à vontade. O delineamento experimental foi inteiramente casualizado em esquema fatorial onde se avaliou as duas fontes de nitrogênio não proteico e dois grupos genéticos (mestiços Dorper ou Texel). As médias foram avaliadas pelo teste de Tukey a 5% de probabilidade. Os tratamentos não influenciaram o ganho de peso diário (0,256 kg/dia). O uso da ureia encapsulada proporcionou maior rendimento de carcaça quente e fria quando comparada a dieta com ureia pecuária. As perdas por resfriamento foram menores para os mestiços Texel (3,87%) em comparação aos mestiços Dorper (6,88%). A espessura de gordura (1,81 mm), conformação (2,98), valores de L (36,77), teor de a* (6,04), teor de b* (6,73) e força de cisalhamento (5,68 kgf) não foram alterados pelos tratamentos empregados. A ureia encapsulada proporcionou maior rendimento de carcaça e menor perda no resfriamento.

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Section: Resultsunclassified

Uso de duas fontes de ureia na dieta de cordeiros mestiços terminados em sistema semi-intensivo

Gallo¹,

Pereira²,

Reis³

2015

Bol. Ind. Anim.

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“…In general, the lambs of the group 4 tended to have the lowest measurements. The corporal score ranged from 2.50 to 3.15 which according to Cartaxo et al (2008), indicates an adequate conformation for lambs slaughtering.…”

Section: Resultsmentioning

confidence: 99%

Do carcasses of lambs finished on commercial production systems meet market standards?

Lôbo

Chaparro-Pinzón

Neto

et al. 2018

An. Acad. Bras. Ciênc.

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This study aimed to characterize a commercial lamb finishing system using animals of undefined breed from production to slaughter by analyzing performance, carcass traits, yield of commercial cuts, and the quality and meat acceptance of different slaughter groups, as to evaluate whether this system provides the market with a standardized product. The lots were not homogeneous for yield of commercial cuts and performance and morphometric traits evaluated in vivo. The groups were heterogeneous to 75% of the 13 carcass traits evaluated, among them, hot and cold carcass weights, hot and cold carcass yields, carcass grade finishing and biological yield. There was also no uniformity for the proportion of non-carcass components, morphometry of carcass, visual appraisals, and loin traits. On the other hand, homogeneity was achieved in physico-chemical and sensory traits, except for hardness and proportion of saturated, monounsaturated and polyunsaturated fatty acids. We conclude that the commercial finishing system with the use of undefined crossbred lambs does not produce carcass and cuts standardized to the market.

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“…To attribute the scores were made before the slaughter, by visual and tactil examination, by palpation of lombar region and in insertion of goats tail, with scores from 1 to 5, with intervals of 0,5 point, being: score 1very thin animal; score 2 -thin; score 3moderate; score 4 -fat; and score 5very fat. According to Cartaxo et al (2008), the gross profit margin was obtained by the following equation: GM = (WGC x 5,00) -[(CP x ACDM x DC) + EVM], in which: GM is the gross profit margin (R$/animal); WGC is the wheight gain during confinement; 5,00 is the price per kilo of live animal practiced in region (R$); CP is the confinement period; ACDM is the average consumption of dry matter; DC is the diet cost; and EVM is the expenses with vaccines and medicines. To evaluate the studied variables it was considered a linear model, containing only fixed effects, and it was applied the method of minimum squares, throught the analysis of variance (ANOVA), bu the using of GLM procedure (General Linear Models) by SAS (1999), and compared to treatment averages through Tukey's test at 5% of probability.…”

Section: Methodsmentioning

confidence: 99%

Productive and economic performance of goats of different genetic groups

Oliveira

Sousa²,

Oliveira

et al. 2018

Rev. bras. saúde prod. anim.

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SUMMARY This study aimed to evaluate the bio-economic performance in confinement crossbred goats from different genetic groups. Were used 30 goats, crossbred (F1) intact male, 10 goats Boer x SPRD (undefined breed), 10 x Savannah SPRD and 10 Oberhasli x SPRD, with an average weight of 15 kg and an average age of 100 days. The initial weight was evaluated, final body weight, average daily gain, total weight gain, dry matter intake, water intake, feed conversion and days on feed. As an economic indicator was calculated gross profit margin (MB), the average dry matter intake, the confinement period, the cost of each diet and the cost of vaccines and medicines. We used the 5% Tukey test for comparisons between treatment means. For the variables weight gain, dry matter intake, water intake and body condition score averages observed did not differ between the genetic groups. There was significant effect (P> 0.05) of genetic groups on days on feed. The biological performance of the goats finished in feedlot was not influenced by genetic group. In bioeconomic analysis was no significant difference (P> 0.05) between the evaluated racial groups. Gross profit margin was negative for the mestizos Pardo Alpine x SPRD. The cross between the Boer breed and without defined breed results in premature animals, reaching slaughter weights with reduced confinement period. In the feedlot finishing system crossbred Boer goats x SPRD showed better economic performance, providing greater profitability to the creator.

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Efeitos do genótipo e da condição corporal sobre o desempenho de cordeiros terminados em confinamento

Cited by 25 publications

References 20 publications

Uso de duas fontes de ureia na dieta de cordeiros mestiços terminados em sistema semi-intensivo

Uso de duas fontes de ureia na dieta de cordeiros mestiços terminados em sistema semi-intensivo

Do carcasses of lambs finished on commercial production systems meet market standards?

Productive and economic performance of goats of different genetic groups

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