Taxa de deposição de tecidos corporais de novilhas Nelore e suas cruzas com Angus e Simental

Souza, Evaristo Jorge Oliveira de; Filho, Sebastião de Campos Valadares; Guim, Adriana; Valadares, Rilene Ferreira Diniz; Paulino, Pedro Veiga Rodrigues; Ferreira, Marcelo de Andrade; Torres, Thaysa Rodrigues; Lage, Josiane Fonseca

doi:10.1590/s1519-99402012000200005

Cited by 5 publications

(5 citation statements)

References 13 publications

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“…In the evaluation of productive performance, the Guzerat animals exhibited initial weight, final weight and ADG values of 381.27, 497.20 and 1.45 kg, respectively, which were all lower than those obtained by the ½ Guzerat-Aberdeen Angus cattle (401.34, 541.34 and 1.75 kg, respectively). These findings agree with Souza et al (2012), who reported that crossbred animals were superior in productive performance; and Pitombo et al (2013), who stated that productive performance depends on factors such as breed, management and others.…”

Section: Resultssupporting

confidence: 91%

“…The most commonly observed behavioral changes in response to heat stress are increased water intake, decreased rumination, reduced feeding time, and increased time spent on other activities (Vilela et al, 2013). Souza et al (2012) stated that productive indices can vary according to the breed and cross used, which influence weight gain and carcass yields. Monitoring and evaluating the productive indices of a system allow the producer to identify the critical points, set resolutive goals and attain better results in less time.…”

Section: Introductionmentioning

confidence: 99%

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Productive, behavioral and physiological performance of feedlot Guzerat and ½ Guzerat × ½ Aberdeen Angus cattle

Ferro

Santos

et al. 2020

SCA

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The objective of this study was to compare the productive, behavioral and physiological performance of feedlot Guzerat and ½ Guzerat × ½ Aberdeen Angus cattle. The experiment was conducted in a commercial feedlot for 80 days, between April and June 2016. Fifteen male Guzerat and 15 male ½ Guzerat-Aberdeen Angus cattle, both at the same age, with respective average initial weights of 381.27 and 401.34 ± 54.70 kg, were used. The animals were kept in collective pens, one for each breed group, with 14 m2 available per animal. Environmental conditions, respiratory frequency and behavior were evaluated for 12h00, starting at 06h00 and ending at 18h00. Feeding, rumination, rest, other activities and social, body care, anomalous, playful and locomotion behavior were observed. To examine the productive responses, initial weight, final weight, average daily weight gain, total weight gain, carcass yield, conformation and fatness were measured. Behaviors referring to feeding, rumination and other activities did not differ between the breed groups, except for the rest, playful and locomotion behaviors. A significant difference was detected (p < 0.05) for respiratory frequency and productive characteristics between the breed groups. In conclusion, ½ Guzerat × ½ Aberdeen Angus were superior to Guzerat cattle in productive performance. However, for behavioral and physiological variables, Guzerat animals exhibited better performance.

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Productive, behavioral and physiological performance of feedlot Guzerat and ½ Guzerat × ½ Aberdeen Angus cattle

Ferro

Santos

et al. 2020

SCA

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“…Portanto, este fator pode interferir no aspecto comercial da carcaça, já que os cortes dessa região são menos valorizados, quando comparados aos cortes do quarto traseiro (cortes nobres da carcaça). Souza et al (2012) notaram diferenças entre grupos genéticos quanto a deposição de gordura subcutânea, sendo que o grupo de novilhas Angus apresentou maiores resultados que o grupo das raças Simental e Nelore. Isto ocorreu pelo fato de a raça Angus expressar a maturidade fisiológica primeiramente, uma vez que apresenta maior precocidade quando comparada as outras duas raças.…”

Section: Discussionunclassified

Ganho De Peso E Características De Carcaça De Bovinos Nelore E Meio Sangue Angus-Nelore Em Regime De Suplementação a Pasto

Dias

Orlandini

Steiner

et al. 2016

ArqVet

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RESUMO:A pecuária de corte brasileira tem sido marcada por intensas transformações, resultantes da aplicação de técnicas modernas de produção, da utilização dos cruzamentos entre raças, e das exigências do mercado consumidor. O desempenho do período pré-desmama é importante por se tratar do primeiro resultado de produtividade animal e a classificação e tipificação das carcaças possibilitam enquadrá-las em diferentes classes e, assim, direcioná-las a diferentes mercados. O objetivo deste trabalho foi comparar o desempenho pré-desmama e características de carcaças entre dois grupos genéticos: Nelore (NE), e ½ sangue Angus-Nelore (F1), os quais foram abatidos sem castração e suplementados a pasto do nascimento ao abate. Foram tomados, ao acaso, 36 animais sendo 18 machos da raça Nelore (NE) e 18 machos oriundos do cruzamento industrial entre Nelore e Angus, machos (F1), sendo todos submetidos ao mesmo manejo e abatidos sem castração, com idade aproximada de 20 meses. Durante o processo de abate, as carcaças foram classificadas e tipificadas. O grupo F1 foi superior ao grupo NE com diferença significativa referente ao peso ao nascer (p=0,0046), peso ajustado aos 205 dias (p=0,0002), peso ao desmame (p=0,0005), ganho de peso diário entre o nascimento e os 205 dias (p=0,001). Quanto às características de carcaças não houve diferença estatística entre os grupos (p>0,05), sendo que, ambos atingiram a exigência frigorífica para espessura de gordura. Observou-se uma superioridade nos animais F1 quanto ao desempenho pré-desmama, e nota-se a possibilidade de terminar animais inteiros a pasto, com acabamento de carcaça mínimo, desde que bem alimentados. PALAVRAS-CHAVE: Abate. Cruzamento industrial. Desempenho pré-desmama. Machos não castrados. Produtividade. WEIGHT GAIN AND CARCASS CHARACTERISTICS OF NELLORE AND CROSSBREED ANGUS-NELLORECATTLE ON GRAZING SUPPLEMENTATION SCHEME ABSTRACT: The Brazilian beef cattle industry has been marked by dramatic changes resulting from the application of modern production techniques, use of crossbreeding and consumer market requirements. The performance of the pre-weaning period is important because it is the first result of animal productivity, and the evaluation and classification of carcasses enable their categorization into different classes, and thus, their directing to different markets. The objective of this study was to compare the pre-weaning performance and carcass traits between two genetic groups: Nellore (NE) and Angus-Nellore crossbreed (F1), which were slaughtered without castration, receiving grazing supplementation from birth to slaughter. Thirty-six animals were randomly selected, 18 Nelore (NE) and 18 Angus-Nellore crossbreed (F1) animals, all males, submitted to the same management system and slaughtered without castration, with approximate age of 20 months. During the slaughtering process, carcasses were classified and typified. The F1 group was superior to the NE group with significant differences related to birth weight (p = 0.0046), weight adjusted to 205 days (p = 0...

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“…The weight gain rate has a direct impact on the degree of maturation of cattle and consequently on the composition of the gain; therefore, as the animal growth rate increases, the sooner it will achieve the plateau for muscle tissue deposition, exponentially increasing the adipose tissue deposition rate. Souza et al (2012) found an influence on the growth rate on the body composition of Zebu × Taurine crossbred cattle.…”

Section: Discussionmentioning

confidence: 90%

Meat Quality of Dairy Steers Fed Mesquite Pod Meal in Semi-Arid

Almeida¹,

Souza²,

Véras³

et al. 2017

JAS

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The exploitation of dairy steers for meat production is an alternative to improve production rates, but feed alternatives to cereal grains like corn used in animal feed should be researched. In this study, we aimed to evaluate performance, carcass characteristics, and meat quality of dairy steers consuming different levels (0, 250, 500, 750, and 1000 g/kg, dry matter basis) of mesquite pod meal replacing corn. Twenty-five intact Holstein-Zebu dairy steers at approximately 18 months of age and with an initial body weight of 219±22 kg were used. A completely randomized design with five treatments (replacement levels) and five replications (animals) was adopted, and data were analyzed using PROC GLM for analysis of variance and PROC REG for regression analysis. There was no significant influence of the levels of replacement of corn by the mesquite pod meal as regards dry matter intake, final body weight, weight gain, carcass weight, or carcass yield (P > 0.05). The meat quality of the cattle was not significantly affected by the different levels of replacement (P > 0.05). Mesquite pod meal can fully replace corn in diets for dairy steers.

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Taxa de deposição de tecidos corporais de novilhas Nelore e suas cruzas com Angus e Simental

Cited by 5 publications

References 13 publications

Productive, behavioral and physiological performance of feedlot Guzerat and ½ Guzerat × ½ Aberdeen Angus cattle

Productive, behavioral and physiological performance of feedlot Guzerat and ½ Guzerat × ½ Aberdeen Angus cattle

Ganho De Peso E Características De Carcaça De Bovinos Nelore E Meio Sangue Angus-Nelore Em Regime De Suplementação a Pasto

Meat Quality of Dairy Steers Fed Mesquite Pod Meal in Semi-Arid

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