Influence of Carcass Weight upon Carcass Composition and Consumer Preference for Lamb

Southam, Everett R.; Field, R. A.

doi:10.2527/jas1969.285584x

Cited by 8 publications

(2 citation statements)

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“…Consumer demand for leaner meat in addition to market resistance to lambs that are too heavy and(or) too fat were the key incentives for the research presented. The sheep industry problem of producing lambs that are too fat is well documented (Southam and Field, 1969;Steele and Hohenboken, 1972;Glimp and Snowder, 1989). However, some workers consider that production of heavy lambs is advantageous for the sheep industry to reduce small primal cuts and increase efficiency during the processing phase (Ament et al, 1962;Southam and Field, 1969).…”

Section: Introductionmentioning

confidence: 99%

“…The sheep industry problem of producing lambs that are too fat is well documented (Southam and Field, 1969;Steele and Hohenboken, 1972;Glimp and Snowder, 1989). However, some workers consider that production of heavy lambs is advantageous for the sheep industry to reduce small primal cuts and increase efficiency during the processing phase (Ament et al, 1962;Southam and Field, 1969). For example, Botkin et al (1988) estimated that lambs 7 kg heavier would result in 28 to 49 kg more lamb being dressed per hour through a typical packing plant.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of lean lamb production systems.

Blackburn

Snowder

Glimp

1991

Journal of Animal Science

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A series of simulations were performed to evaluate the effects of mature size (WMA; 60, 70, 80 and 90 kg), slaughter weight (SW; 55, 60 and 65 kg) and three diets fed to feedlot lambs. Rations included a traditional diet (C2L) or placing weaned lambs on alfalfa for either 30 (A30) or 60 (A60) d before placing them on the C2L diet (A30-C2L and A60-C2L). Two lamb pricing schemes were used in the financial analysis of the biological results: sale price based on weight with or without adjustment for carcass fat. Placing lambs on alfalfa pasture increased ownership by 22 d on average compared to C2L. As WMA and SW increased, ownership increased from 3 to 11 d. Across nutritional treatments, fat decreased by 5.8 to 9.0% as WMA increased from 60 and 90 kg. When market lambs were priced on weight, net returns per lamb were greatest for A30-C2L or A60-C2L ($2.34 and $5.21, respectively above C2L) and for greater SW ($4.77 and $7.16 greater for SW 60 and 65 kg than for SW 55). The combination WMA of 90 kg, a SW of 65 kg and nutritional treatment of A60-C2L proved most profitable. However, when sale price was discounted for excessive fat content, the combinations WMA of 60 or 70 with a SW of 65 and A60-C2L were most profitable. The rank correlation between biological efficiency (weight gain/dry matter feed consumption) and net return, when sale price was based on weight, was found to be -.51. This was because lambs slaughtered at lighter weights had high biological efficiencies but low net returns due to a negative price margin. With negative price margins but positive feeding margins, net returns are greatest for heavier, fatter lambs fed longer.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%