Desempenho e exigências de energia e proteína de bovinos de corte em pasto suplementados

Machado, Polyana Albino Silva; Filho, Sebastião de Campos Valadares; Valadares, Rilene Ferreira Diniz; Paulino, Mário Fonseca; Paulino, Pedro Veiga Rodrigues; Marcondes, Marcos Inácio

doi:10.1590/s0102-09352012000300021

Cited by 6 publications

(6 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…REA in CF did not differ from that of the other treatments (p>0.05). Machado et al (2012) found an REA of 54 and 60.72 cm² and SFT of 1.70 and 1.96 mm in cattle receiving mineral and concentrate supplementation, respectively, which is close to that reported in the present study.…”

Section: Resultssupporting

confidence: 91%

“…As in the present study, Machado et al (2012) found that muscle and fat deposition was higher in the carcasses of cattle receiving on pasture concentrate supplementation (63.63% muscle, 16.33% fat) than in those receiving mineral salt (62.23% muscle, 15% fat). As such, body weight alone does not reflect carcass tissue composition in the present study.…”

Section: Resultssupporting

confidence: 83%

“…The supplementation strategies did not affect the yield of shoulder clod, chuck, topside, rump, tenderloin, eye round, rump steak, top sirloin, knuckle, rump skirt and shank cuts (p>0.05; Table 5). In a study on cattle receiving mineral salt and increasing levels of concentrate supplementation (1, 2 and 3 kg day -1 ) in the transition from the rainy to the dry season, Machado et al (2012) found no treatment effects on commercial meat cut yield. In the present study, however, the treatments affected brisket point end and outside flat yields, which were higher in CF and CGF than in MSGF (p<0.05).…”

Section: Resultsmentioning

confidence: 97%

See 2 more Smart Citations

Carcass traits and meat quality of steers on pasture submitted to different dietary supplementation

Menezes

Fernandes

Morais

et al. 2019

SCA

View full text Add to dashboard Cite

This study aimed at evaluating carcass traits and meat quality of Nellore steers on pasture submitted to different dietary supplementation strategies. The 32 Nellore animals tested (8 ± 0.6 months) were raised under rotational grazing on Brachiaria brizantha cv. Piatã (syn. Urochloa brizantha cv. Piatã) pasture and distributed in four treatments: supply of mineral salt ad libitum in the growth and finishing phases (MSGF); concentrate supplementation only during the growth phase (CG); concentrate supplementation only during the finishing phase (CF) and concentrate supplementation the growth and finishing phases (CGF). The concentrated supplement was supplied at 0.5% of body weight and mineral ad libitum. The steers were slaughtered when more than 50% of the lot of each treatment reached 450 kg body weight. The mean the hot and cold carcass weight and subcutaneous fat thickness did not differ between treatments (P > 0.05). The calves the treatment CF and CGF showed a larger rib-eye area and higher ether extract levels in the Longissimus dorsi muscle than in MSGF and CG (P < 0.05). Mean shearing force was similar between treatments (P > 0.05). The use of feeding strategies on pasture with concentrate supplementation in the growth and finishing phases of Nellore cattle anticipates slaughter in 92 days and produces carcasses and meat with satisfactory traits.

show abstract

Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 97%

See 1 more Smart Citation

Carcass traits and meat quality of steers on pasture submitted to different dietary supplementation

Menezes

Fernandes

Morais

et al. 2019

SCA

View full text Add to dashboard Cite

show abstract

“…De acordo com Machado et al (2012), a equação foi traçada com os dados de todos os animais do experimento, sendo a estimativa da ELm de 85kcal/kg PCVZ 0,75 . Este valor foi superior àqueles relacionados por Valadares Filho et al (2016), de 69,33 e 74,01kcal/kg PCVZ 0,75 , respectivamente, os quais trabalharam com animais em condições semelhantes às deste estudo.…”

Section: Pubvetunclassified

“…A equação obtida por Machado et al (2012) foi: ER = 0,246 x CEM -0,032 (Figura 21). De acordo com essa equação, as exigências de energia metabolizável para mantença de bovinos Nelore a pasto seriam de 130,08 kcal/kg PCVZ 0,75 , com uma eficiência de utilização da energia metabolizável para ganho (kg) de 24,6%.…”

Section: Pubvetunclassified

Gasto energético de bovinos en régimen de pastoreo: Métodos experimentales y factores determinantes

Machado¹,

Negrão²,

Zanine³

et al. 2018

Pubvet

View full text Add to dashboard Cite

RESUMO.Em se tratando da bovinocultura brasileira, o sistema de criação predominante na maioria do país é o sistema de criação a pasto, caracterizado pelas vastas extensões de terras disponíveis e clima tropical que favorece o crescimento de gramíneas adaptadas. Uma característica notável desse sistema de criação é a sazonalidade na produção de forragem que é abundante no período chuvoso e escassa no período seco; tal situação compromete o desempenho dos índices zootécnicos dos animais e acarreta perdas na produtividade dos mesmos. Na cadeia produtiva animal, a energia é um fator de destaque na produção, sendo essencial para sustentar todos os processos vitais e metabólicos do corpo, entre outras funções. É necessário observar que animais criados a pasto possuem maior gasto energético, pois se movimentam mais em busca de alimento. Assim, objetivou-se elencar os métodos de determinação de gasto energético e demonstrar a importância da adoção de um manejo alimentar adequado.Palavras chave: energia, metabolismo energético, nutrição animal Energy expenditure of grazing cattle: Experimental methods and determinantsABSTRACT. In the case of Brazilian cattle breeding, the principal breeding system in most of the country is the grazing system, characterized by vast tracts of land available and a tropical climate that favors the growth of adapted grasses. A notable feature of this breeding system is the seasonality of forage production that is abundant in the rainy season and scarce in the dry season; this situation compromises the performance of the performance indexes of the animals and causes losses in their productivity. In the animal production chain, energy is a prominent factor in production, being essential to sustain all vital and metabolic processes of the body, among other functions. It is necessary to observe that animals raised in pasture have greater energy expenditure, since they move more in search of food. Thus, the objective was to list methods of energy expenditure determination and to demonstrate the importance of adopting an adequate food management.

show abstract

Physicochemical characterization and lipid profile of meat from crossbred

Pimentel

Silva

et al. 2019

Cienc. Rural

View full text Add to dashboard Cite

The aim of this study was to evaluate the carcass characteristics and the physicochemical parameters, centesimal composition, and fatty acid profile of the longissimus lumborum muscle of crossbred steers on a Brachiaria (Syn. Uruchloa) brizantha cv. Marandu pasture during the growing and finishing phases. Twenty-two uncastrated steers ½ Holstein/Zebu, with an average initial weight of 210 kg ± 8.2 kg and eight months of age, were distributed in a completely randomized design, in which the experimental period was fractionated in to three seasons associated with two nutritional plans (NP1 and NP2) and 11 animals by treatment: NP1- mineral mixture ad libitum in rainy seasons + nitrogen/energy supplement at 1 g.kg-1 body weight (BW) in the dry season; and NP2 - nitrogen/energy supplement at 2 g.kg-1 BW in rainy season 1 and in the dry season + nitrogen/energy supplement at 1 g.kg-1 BW in rainy season 2, provided daily at 1000 h. Of the carcass measurements, differences were only observed (p>0.05) between the nutritional plans for loin-eye area corrected for 100 kg of hot carcass weight. Among the physicochemical parameters, only shear force was influenced (p>0.05) by the treatments, with higher values obtained in Nutritional Plan 1. The centesimal composition and fatty acid profile were not influenced (P<0.05) by supplementation. Nutritional plans used in the growing and finishing phases involving low levels of protein-energy supplementation do not lead to changes significant in carcass characteristics and meat. Nutritional Plan 1 is the most appropriate because it presents a lower cost.

show abstract

Desempenho e exigências de energia e proteína de bovinos de corte em pasto suplementados

Cited by 6 publications

References 11 publications

Carcass traits and meat quality of steers on pasture submitted to different dietary supplementation

Carcass traits and meat quality of steers on pasture submitted to different dietary supplementation

Gasto energético de bovinos en régimen de pastoreo: Métodos experimentales y factores determinantes

Physicochemical characterization and lipid profile of meat from crossbred

Contact Info

Product

Resources

About