Desempenho produtivo e econômico do confinamento de bovinos zebuínos alimentados com três dietas de alto concentrado

Mandarino, Raphael Amazonas; Barbosa, Fabiano Alvim; Filho, S.L.S. Cabral; Lobo, C.F.; Silva, I.S.; Oliveira, Rodrigo Vidal; Diogo, J.M.S.; Júnior, R. Guimarães

doi:10.1590/s0102-09352013000500027

Cited by 12 publications

(15 citation statements)

References 9 publications

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“…The average daily gain in live weight of the whole corn grain-based diet was different (P<0.05) from that of the other treatments (Table 2), which is partially explained by the lower final weight and carcass weight than in the animals fed steam-flaked corn-and ground cornbased diets. Mandarino et al (2013) reported ADG and dry matter daily intake of 1.25 kg and 8.52 kg (1.79% LW), respectively, when studying Nellore and Nellore × Brahman animals given a whole corn grain-based diet (corn grain:pellet ratio -85:15%), with 482.14 kg live weight at slaughter and a 96-day feedlot period, which are similar results to those obtained in this study. These results suggest that whole corn grain-based diets may be recommended for finishing Bos indicus animals, with similar gains to those obtained in the present study.…”

Section: Resultssupporting

confidence: 87%

“…Diets with whole corn grain and pelleted supplement have been used in recently Brazil and provided satisfactory animal performance, but the carcass and meat quality was not assessed (Mandarino et al, 2013). The objective of this experiment was to evaluate the effect of different energy sources in the diet on carcass and meat quality of Nellore bulls.…”

Section: Introductionmentioning

confidence: 99%

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Carcass and meat traits of feedlot Nellore bulls fed different dietary energy sources

et al. 2016

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-The objective of this experimental study was to evaluate the effects of different dietary energy sources on the carcass and meat traits of feedlot Nellore bulls. A total of 48 Nellore bulls at 32 months of age with 354.35±19.56 kg body weight were studied for 85 days. The bulls were allotted to four groups of 12 individuals: Whole corn grain -diet based on whole corn grain; Ground corn -diet based on ground corn grain; Citrus pulp -diet based on citrus pulp; and Steam-flaked corn -diet based on steam-flaked corn. Diets did not influence carcass quality or meat quality. Average values for fat depth, rib eye area, shear force, total cooking losses, and carcass yield were 4.97 mm, 74.71 cm 2 , 5.85 kgf, 26.82%, and 52.0%, respectively. Based on the quantitative and qualitative analysis of this study, there is no restriction for the adoption of any of the tested diets in feedlots with Nellore bulls and the evaluated energy sources may be used to replace ground corn grain.

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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Carcass and meat traits of feedlot Nellore bulls fed different dietary energy sources

et al. 2016

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“…Bourg et al (2012) obtiveram resultados semelhantes aos do presente trabalho, ao utilizar ULL em três dietas para novilhos Angus mestiços, com diferentes fontes de proteína; contudo, estes autores não constataram diferenças (p>0,10) para GMD, PF e CMS. Mandarino et al (2013) avaliaram bovinos Nelore e Nelore × Brahman submetidos a três diferentes tratamentos, com dietas de alto concentrado: 25% de silagem de milho + 75% de concentrado; exclusiva de pellets; e 85% de milho grão inteiro + 15% de pellets. Os autores obtiveram valor semelhante aos do presente trabalho para CMS (9,75 kg por dia), porém um valor menor para CMS%PV (1,99), uma vez que os animais apresentaram maior PF (493,32 kg).…”

Section: Resultsunclassified

Ureia de liberação lenta em substituição ao farelo de soja na terminação de bovinos confinados

Azevedo

Barbosa

Graça

et al. 2015

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito da substituição da proteína bruta do farelo de soja pela ureia de liberação lenta sobre o desempenho, as características de carcaça e o custo alimentar de bovinos Nelore terminados em confinamento. Foram utilizados 48 machos inteiros da raça Nelore, com idade média de 22 meses e peso inicial de 367,95+18,52 kg. Utilizou-se o delineamento inteiramente casualizado com quatro tratamentos: FS, 8,91% de farelo de soja e 0% de ureia de liberação lenta (ULL); OP33, 6,01% de farelo de soja e 0,46% de ULL; OP67, 2,94% de farelo de soja e 0,94% de ULL; e OP100, 0% de farelo de soja e 1,41% de ULL. Não houve diferença entre os tratamentos para as variáveis peso inicial, peso final, ganho médio diário, ganho de carcaça, consumo de matéria seca, conversão alimentar, eficiência biológica, peso de carcaça quente, rendimento de carcaça e custo alimentar da arroba produzida. A ureia de liberação lenta, usada em substituição parcial ou total à proteína do farelo de soja na dieta, não altera o desempenho, as características de carcaça e a eficiência econômica de bovinos de corte confinados.Termos para indexação: ganho de peso vivo, nitrogênio não proteico, proteína degradável no rúmen, ureia protegida. Slow-release urea to replace soybean meal in finishing feedlot cattleAbstract -The objective of this work was to evaluate the effect of replacing crude protein of soybean meal by slow-release urea on the performance, carcass traits, and feeding costs of feedlot Nelore steers. Forty-eight Nelore steers were used, with an average age of 22 months and weight of 367.95+18.52 kg. A completely randomized design was used with four treatments: SM, 8.91% soybean meal and 0% slow-release urea (SRU); OP33, 6.01% soybean meal and 0.46% SRU; OP67, 2.94% soybean meal and 0.94% SRU; and OP100, 0% soybean meal and 1.41% SRU. No difference was observed between treatments for the variables initial weight, final weight, average daily gain, carcass gain, dry matter intake, feed conversion, biological efficiency, hot carcass weight, carcass yield, and feed cost of produced arroba. Slow-release urea, used to partially or totally replace protein of soybean meal in the diet, does not modify the performance, carcass traits, and economic efficiency of feedlot cattle.Index terms: live weight gain, non-protein nitrogen, rumen degradable protein, protected urea.

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“…According to Pacheco et al (2013), carcass weight is a very important characteristic for the producer, other than the degree of finishing and animal age, being directly related to income. Mandarino et al (2013) evaluated the productive characteristics of cattle fed diets that used 75% of concentrate or were based exclusively (100%) on concentrate, and verified differences in warm carcass weights between the different food treatments -a fact these authors also associated with the difference in animal weight gain. Regarding yields of warm and cold carcasses, the highest yields were observed in corn-fed animals, followed by those maintained on a rice diet, and finally cattle fed white oats.…”

Section: Resultsmentioning

confidence: 89%

Characteristics of the carcass and quality of meat of male and female calves with different high-grain diets in confinement

Cattelam

Argenta

Filho

et al. 2018

SCA

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The goal of the present study was to evaluatecharacteristics of the carcass and meat of steers and heifers, finished in feedlots and fed different high-grain diets. Forty-five bovines were used: 21 heifers, with an initial age of 32 months and initial weight of 359.9 kg, and 24 steers, with an initial age of 20 months and initial weight of 337.6 kg, from a Charolais × Nelore crossbreed. The animals were divided among the treatments, which were defined by the energy source used in the diet: rice, white oats, or corn; seven heifers and eight steers were used per diet treatment. The animals remained confined until reaching an estimated warm carcass weight of 220 kg. The experimental design was completely randomized, with a 3 × 2 factorial arrangement. Weights at slaughter were higher for animals fed white oats (449.3 kg) or corn (430.4 kg) than for animals fed rice (401.8 kg). Higher carcass yields were found in corn-fed animals. Animals that received rice had lower coverfat thickness. The yields of the rib and hind-quarter commercial cuts were higher for cattle that received white oats or corn. Animals that received corn diets had greater arm circumference than animals that received white oatsand both were larger than animals that were fed rice. The tenderness (5.15 points) and palatability (5.46 points) of rice-fed animals werelower than those of animals fed white oats (5.73 and 6.40 points, respectively) or corn (6.04 and 6.45 points, respectively). Slaughter weights were similar between categories - 424.1 kg and 430.2 kg for steers and heifers, respectively. Steers had higher fore-quarter yield (38.0% vs.37.4%), whereas heifers had a greater carcass length (126.0 cm vs. 123.1 cm). The finishing of cattle with corn- or white oat-based high grain-diets yielded heavier carcasses, with adequate deposition of fat, andbetter performance of principal carcass cuts. Feeding with rice in high-grain diets produced leaner meats, but reduced carcass weight, with greater losses upon cooling and less tender meat. The production of confined heifers or steers ensures similar meat products.

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Desempenho produtivo e econômico do confinamento de bovinos zebuínos alimentados com três dietas de alto concentrado

Cited by 12 publications

References 9 publications

Carcass and meat traits of feedlot Nellore bulls fed different dietary energy sources

Carcass and meat traits of feedlot Nellore bulls fed different dietary energy sources

Ureia de liberação lenta em substituição ao farelo de soja na terminação de bovinos confinados

Characteristics of the carcass and quality of meat of male and female calves with different high-grain diets in confinement

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