Desempenho, fibras musculares e carne de bovinos jovens de três grupos genéticos

Arrigoni, Mário de Beni; Júnior, A. A. de Oliveira; Dias, Paulo Marcelo Amorim; Martins, Cyntia Ludovico; Cervieri, Rafael da Costa; Silveira, Antônio Carlos; Oliveira, Henrique Nunes de; Chardulo, Luis Artur Loyola

doi:10.1590/s0100-204x2004001000012

Cited by 14 publications

(9 citation statements)

References 13 publications

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“…Segundo Arrigoni et al (2004), vários trabalhos que estudaram desempenho de bovinos cruzados oriundos de zebuínos e europeus verifi caram maior taxa de crescimento e melhor aproveitamento dos alimentos em animais com maior percentagem de sangue europeu, principalmente ao se utilizar bovinos da raça Aberdeen Angus no cruzamento. Pesq.…”

Section: Resultsunclassified

Dieta com alto teor de gordura e desempenho de tourinhos de grupos genéticos diferentes em confinamento

Souza

Medeiros

Morais

et al. 2009

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o desempenho em confi namento de tourinhos de quatro grupos genéticos distintos tratados com dietas com diferentes teores de gordura. Foram utilizados nove animais Nelore, nove Caracu, dez ½ Caracu ¼ Angus ¼ Nelore e dez ½ Red Angus ¼ Caracu ¼ Nelore, com massa corporal inicial de 227±33 kg e dez meses de idade, distribuídos aleatoriamente em dois tratamentos nutricionais: baixo teor de gordura (3,15% de extrato etéreo) e alto teor de gordura (7,28% de extrato etéreo). A ingestão de matéria seca (IMS) foi quantifi cada durante 208 dias e as pesagens dos animais foram realizadas a cada 28 dias. Os animais alimentados com as dietas de alto e de baixo teor de gordura apresentaram resultados similares de ganho médio diário de peso (1,511x1,487 kg por dia, respectivamente) e de efi ciência alimentar (194x180 g de ganho por quilograma de MS ingerida, respectivamente); a IMS, em percentagem do peso vivo, foi menor nos animais alimentados com dieta de alto teor de gordura (2,25x2,40, respectivamente). Os animais cruzados apresentaram maior ganho de massa corporal e IMS que os Nelore. A dieta com alto teor de gordura pode ser utilizada em confi namento para melhorar o desempenho de tourinhos ½ Caracu ¼ Angus ¼ Nelore, pois é efi ciente para reduzir a ingestão de matéria seca e não prejudica o ganho de massa corporal dos animais.Termos para indexação: Bos taurus, Bos indicus, cruzamento, ingestão de matéria seca, grão de soja, lipídio. High-fat diet and feedlot performance of bullocks of different genetic groupsAbstract -This work aimed to evaluate the feedlot performance of bullocks of four distinct genetic groups receiving diets with different levels of fat. Nine Nelore; nine Caracu; ten ½ Caracu ¼ Angus ¼ Nelore and ten ½ Red Angus ¼ Caracu ¼ Nelore bullocks, with a mean initial weight of 227±33 kg and ten months of age, were randomly assigned to two nutritional treatments and fed either with low-fat (3.15% ether extract) or high-fat diet (7.28% ether extract). Dry matter intake (DMI) was quantifi ed during 208 days and the animals were weighed every 28 days. Animals fed with the high-fat and the low-fat diet presented similar results for average daily weight gain (1.511x1.487 kg day -1, respectively) and feed effi ciency (194x180 g gain per kg DMI, respectively); the DMI, expressed as live weight percentage, was lower in animals receiving high-fat diet (2.25x2.40, respectively). Crossbred animals presented greater daily weight gain and DMI than Nelore. The high-fat diet can be used in feedlot to improve the performance of ½ Caracu ¼ Angus ¼ Nelore bullocks, since it is effi cient in reducing the DMI without compromising weight gain.

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Section: Resultsunclassified

Dieta com alto teor de gordura e desempenho de tourinhos de grupos genéticos diferentes em confinamento

Souza

Medeiros

Morais

et al. 2009

Pesq. agropec. bras.

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“…Total cook loss was calculated as the difference between the weight of the steaks before and after ovenbroiling. The total cook loss minus drip loss represented the evaporative loss (Arrigoni et al, 2004). The total liquid loss was calculated by the difference between the weight of frozen and cooked steak.…”

Section: Methodsmentioning

confidence: 99%

Beef quality traits of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore steers fed at the maintenance level or ad libitum with two concentrate levels in the diet

et al. 2011

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-This trial was conducted to evaluate some beef quality attributes of Nellore, F 1 Simmental × Nellore and F 1 Angus × Nellore steers finished on feedlot. The effects of feeding regime and genetic group on shear force, thawing losses, cooking (leak + evaporation) losses, total losses and muscle fiber type, as well as carcass pH and temperature during 24 h of chilling were evaluated. There was a genetic group effect on shear force, where the beef from F 1 Simmental × Nellore and F 1 Angus × Nellore animals had lower values than Nellore animals. Beef of the animals fed the diets with 1% and 2% of body weight on concentrated lost more liquid than the meat of the animals fed at maintenance during thawing and when considering total losses. During cooking there was a difference among the feeding regimes for drip losses which were greater on the animals fed the diet of 1% of body weight on concentrate, followed by the 2% diet and, finally, by the animals fed at maintenance.The muscle of the Nellore steers had larger proportion of intermediate fibers and lower proportion of oxidative fibers than the crossbred animals. The proportion of glycolytic fibers was not influenced by genetic group. The Nellore animals had larger proportion of fibers of fast contraction and smaller proportion of fibers of slow contraction when compared with the crossbred animals. Feeding regime did not influence the proportion of muscular fibers or shear force. Nellore cattle produce tougher beef than crossbred Simmental × Nellore or Angus × Nellore, although all of them have the potential to produce an acceptable beef when slaughtered at young age. Feed restriction up to 90 days is not enough to cause modification on muscle fiber frequencies, then not affecting beef quality.

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“…Lopes et al (2012) claim that the increase in LEA is due to a higher rate of growth pre-sented by European animals compared with the zebu breeds. According to Arrigoni et al (2004), Bos taurus and Bos indicus crossbred animals present higher growth rates in cattle due to the higher percentage of European genetic composition. Pereira et al (2009) claim that animals that result from crossing European and zebu cattle have higher LEA values, demonstrating the efficiency of the crossing on increased muscularity in the animals.…”

Section: Discussionmentioning

confidence: 99%

“…Among these zebu breeds, the Nellore is predominant, composing 90% of the breed. Because the use of European purebreds (known for high growth rates in beef cattle production systems), is limited in Brazil due to large environmental differences between temperate and tropical climates (Lopes et al, 2012), the use of industrial crossings has increased significantly in recent years in order to increase beef cattle productivity (Arrigoni et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Carcass and meat quality traits in Nellore and F1 Nellore-Araguaia crosses

Costa¹,

Aboujaoude²,

Vieira³

et al. 2015

Genet. Mol. Res.

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ABSTRACT. We evaluated and compared carcass traits and meat quality in Nellore cattle and F1 crosses between Nellore and Araguaia, where 17 individuals were from the Nellore group and 19 were ½ Nellore and ½ Araguaia crosses. All animals belonged to the same birth season and were raised in pasture systems under the same nutritional, environmental, and management conditions. When the animals reached slaughter weight, they were taken to an industrial slaughterhouse where food was not provided for 24 h (free access to water); they were then stunned, bled, the leather was removed, and they were eviscerated. The carcasses were weighed (hot weight), kept in chilled storage for approximately 24 h at 4°C, and weighed again to obtain the chilled carcass weight. Carcass yield, carcass length, carcass width, leg length, N.V. Costa et al. 5380©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 14 (2): 5379-5389 (2015) thigh perimeter, loin eye area (LEA), retail cuts, cooling loss, pH, fat depth, marbling rate, intramuscular fat, color, and shear force were analyzed and sensory analysis of the meat was conducted. Significant differences (P < 0.05) were observed for the following variables: slaughter weight, hot and chilled carcass weights, carcass and leg lengths, thigh perimeter, LEA, retail cuts, and lightness (L*), where the ½ Nellore ½ Araguaia individuals showed higher means for all of these traits, except leg length and L*. Therefore, crossbreeding between Nellore and Araguaia did not affect the meat's sensory characteristics, but contributed to an improvement in carcass traits, providing an alternative for farmers that aim for good meat quality, with a higher meat percentage.

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Desempenho, fibras musculares e carne de bovinos jovens de três grupos genéticos

Cited by 14 publications

References 13 publications

Dieta com alto teor de gordura e desempenho de tourinhos de grupos genéticos diferentes em confinamento

Dieta com alto teor de gordura e desempenho de tourinhos de grupos genéticos diferentes em confinamento

Beef quality traits of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore steers fed at the maintenance level or ad libitum with two concentrate levels in the diet

Carcass and meat quality traits in Nellore and F1 Nellore-Araguaia crosses

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