Consumo, desempenho e análise econômica da alimentação de cordeiros terminados em confinamento com o uso de dietas de alto grão

Bernardes, Guilherme Meneghello Carvalho; Carvalho, Sérgio; Pires, Cléber Cassol; Motta, Juliano Henriques da; Teixeira, William Soares; Borges, Luiza Ilha; Fleig, Manuella; Pilecco, Veronica Milanesi; Farinha, E. T.; Venturini, Rafael Sanches

doi:10.1590/1678-4162-7934

Cited by 15 publications

(9 citation statements)

References 5 publications

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“…Feed conversion did not differ significantly (P>0.05) in response to the levels of replacement of the roughage source, averaging 3.8:1. This ratio is close to the 4.26:1 observed by Bernardes et al (2015), who used high-grain feed in feedlot lambs. 1 1 = very poor, 5 = excellent.…”

Section: Seminasupporting

confidence: 88%

Feedlot-finishing lambs with different levels of soybean pre-cleaning by-product as the roughage source

Costa¹,

Carvalho²,

Gallarreta³

et al. 2021

Semina: Ciênc. Agrár.

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An experiment was conducted in the Sheep Farming Laboratory at the Federal University of Santa Maria to examine the effect of different levels of replacement of sorghum silage with soybean pre-cleaning by-product (SPCB) on nutrient intake, performance and feeding behavior; as well as to undertake an economic analysis of feeding finishing lambs in a feedlot system. The study involved 32 uncastrated Texel × Ile de France crossbred male lambs weaned at 60 days of age. Treatments consisted of diets in which the roughage source (sorghum silage) was replaced with SPCB at the levels of 0, 33.5, 66.5 or 100% (DM basis). A 45:55 roughage:concentrate ratio was used (DM basis). The diets were composed of a roughage feed based on sorghum silage and/or SPCB, and a concentrate consisting of crushed maize, soybean meal and limestone. In addition, mineral salt was freely available to the animals. The lambs were slaughtered upon reaching the pre-established live weight of 35 kg. Intake on a DM basis showed a quadratic response (P ≤ 0.05) in all forms it was evaluated and expressed, except for the NDF fraction, which increased linearly (P ≤ 0.05) with SPCB inclusion. Average daily weight gain was not significantly influenced (P > 0.05) by the different SPCB levels, averaging 292 g/day. As regards the feeding behavior characteristics evaluated, the number of daily feeding bouts increased linearly (P ≤ 0.01) with the SPCB content of the diets. Total feed cost decreased linearly (P ≤ 0.01), whereas the profit per kilogram of gain and profit obtained per day in the feedlot period increased linearly (P ≤ 0.01) with SPCB inclusion. The use of soybean pre-cleaning by-product as the roughage source in the finishing of feedlot lambs proved to be a viable alternative in both the productive and economic terms.

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Section: Seminasupporting

confidence: 88%

Feedlot-finishing lambs with different levels of soybean pre-cleaning by-product as the roughage source

Costa¹,

Carvalho²,

Gallarreta³

et al. 2021

Semina: Ciênc. Agrár.

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“…Loin-eye area was larger in the lambs receiving the corn grain treatment (Table 2), and this can be considered a consequence of the higher growth rate (BERNARDES et al, 2015) and cold carcass weight of animals receiving that treatment. This may be viewed as a positive aspect regarding carcass quality, since, as stated by Cartaxo and Sousa (2008), an increase in loin-eye area will lead to larger amounts of muscle in the carcass.…”

Section: Resultsmentioning

confidence: 99%

“…Despite the distinct periods of confinement of the lambs on different treatments as a function of the observed differences in weight gain (BERNARDES et al, 2015), the animals were slaughtered at similar live weights. Therefore, the weights of neck, shoulder, ribs, and leg were higher (P<0.05) in the group fed the high-corn grain diet (Table 3), as they showed the best cold carcass yield and weight of all treatments, which mean heavier cuts from their carcass.…”

Section: Resultsmentioning

confidence: 99%

Características da carcaça e composição tecidual da carne cordeiros confinados com o uso de dietas de alto grão

Bernardes¹,

Carvalho²,

Venturini³

et al. 2018

SCA

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This study aimed to evaluate the effect of using different high-grain diets on the carcass characteristics and tissue composition of the meat of feedlot-finished lambs. Thirty-two male castrated Texel lambs born from single births and weaned at approximately 50 days of age were allotted to treatments that consisted of different unprocessed grains, as follows: corn grain, white oat grain, black oat grain, or grain of rice in the husk. The animals were slaughtered upon reaching the pre-established slaughter weight of 32 kg, which corresponds to 60% of the mature weight of their mothers. Lambs fed the high-corn grain diet had higher weights and yields of hot and cold carcass and larger loin-eye areas than those finished in the feedlot receiving high-grain diets based on white oat, black oat, or rice in the husk. Additionally, they had a higher degree of fatness and a thicker subcutaneous fat layer at slaughter, which lead to decreased cooler shrink loss. The neck, shoulder, ribs, and leg cuts were heavier in lambs fed the high-corn grain diet. By contrast, these lambs had a lower proportion of leg, more rib, and higher meat fat content, which may be undesirable for the consumer market. The use of high-corn grain diets, in comparison with high-grain diets based on black oat, white oat, and rice in the husk, may be recommended for finishing lambs in the feedlot when they are slaughtered at similar weights.

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“…Considering the growing development of agricultural areas, intensifying animal production areas appears to be an interesting strategy. In this scenario, the practice of feedlotting has been increasingly adopted in sheep farming systems (Bernardes et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Instrumental and sensory evaluation of lambs and hoggets meat fed high concentrated corn or sorghum diets

Venturini

Carvalho

Nalério

et al. 2020

Semina: Ciênc. Agrár.

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Consumo, desempenho e análise econômica da alimentação de cordeiros terminados em confinamento com o uso de dietas de alto grão

Cited by 15 publications

References 5 publications

Feedlot-finishing lambs with different levels of soybean pre-cleaning by-product as the roughage source

Feedlot-finishing lambs with different levels of soybean pre-cleaning by-product as the roughage source

Características da carcaça e composição tecidual da carne cordeiros confinados com o uso de dietas de alto grão

Instrumental and sensory evaluation of lambs and hoggets meat fed high concentrated corn or sorghum diets

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