Relationships of Five Body Measurements to Slaughter Grade, Carcass Grade, and Dressing Percentage in Milking Shorthorn Steers

Cook, A. C.; Kohli, M. L.; Dawson, W. M.

doi:10.2527/jas1951.102386x

Cited by 22 publications

(10 citation statements)

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“…Similar to our findings, Johnson et al (1990), working with swine, and Kirton and Barton (1962), working with cattle, reported negative correlations between Ccp and CD. Cook et al (1951), working with Shorthorn steers, also suggested that animals with high CD percentage would have more fat in the carcass and thus less carcass CP. CCP = 17.92 ± 2.72 -f 0.60 ± 0.04 x CPR -0.17 ± 0.04 X CD, [2] where Ccp is carcass CP (%), CPR is the CP in ribg_ii (%), and CD is carcass dressing in the empty body (%).…”

Section: Carcass Chemical Compositionmentioning

confidence: 94%

Prediction of physical and chemical body compositions of purebred and crossbred Nellore cattle using the composition of a rib section1

Marcondes

Tedeschi

Filho

et al. 2012

Journal of Animal Science

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The goal of this research was to develop empirical equations to predict chemical and physical compositions of the carcass and the body using the composition of the 9th- to 11th-rib section (rib(9-11)) and other measurements. A database (n = 246) from 6 studies was developed and comprised 37 bulls (BU), 115 steers (STR), and 94 heifers (HF), of which 132 were Nellore (NEL), 76 were NEL × Angus crossbreds (NA), and 38 were NEL × Simmental crossbreds (NS). The right half carcass and the rib(9-11) from the left half carcass were analyzed for ether extract (EE), CP, and water. The remaining components were chemically analyzed to determine the composition of the body. A stepwise procedure was used to determine the variable inclusion in the regression models. The variables included were EE in the rib(9-11) (EER; %), CP in the rib(9-11) (CPR; %), water in the rib(9-11) (WR; %), visceral fat (VF; %; KPH and mesenteric fats), organs plus viscera (OV; %), carcass dressing percentage (CD; %), cold carcass weight (kg), and empty BW (EBW; kg). No sex or breed effects were found on EE and CP compositions of the carcass (C(EE) and C(CP), respectively; %); the equations were as follows: C(EE) = 4.31 + 0.31 × EER + 1.37 × VF [n = 241; R(2) = 0.83; mean square error (MSE) = 4.53] and C(CP) = 17.92 + 0.60 × CPR - 0.17 × CD (n = 238; R(2) = 0.50; MSE = 1.58). Breed affected water content in the carcass (C(W), %); the equations were as follows: C(W) = 48.74 + 0.28 × WR - 0.017 × EBW for NEL; C(W) = 46.69 + 0.32 × WR - 0.017 × EBW for NA; and C(W) = 38.06 + 0.48 × WR - 0.017 × EBW for NS (n = 243; R(2) = 0.67; MSE = 5.17). A sex effect was found on body chemical EE composition (BW(EE)); the equations were as follows: BW(EE) = 2.75 + 0.33 × EER + 1.80 × VF for BU; BW(EE) = 1.84 + 0.33 × EER + 1.91 × VF for STR; and BW(EE) = 4.77 + 0.33 × EER + 1.28 × VF for HF (n = 243; R(2) = 0.89; MSE = 3.88). No sex or breed effects were found on CP composition in the body (BW(CP)); the equation was as follows: BW(CP) = 14.38 + 0.24 × CPR (n = 240; R(2) = 0.59; MSE = 1.06). A sex effect was found for body water content (BW(W)); the equations were as follows: BW(W) = 38.31 + 0.33 × WR - 1.09 × VF + 0.50 × OV for BU; BW(W) = 45.67 + 0.25 × WR - 1.89 × VF + 0.50 × OV for STR; and BW(W) = 31.61 + 0.47 × WR - 1.06 × VF + 0.50 × OV for HF (n = 241; R(2) = 0.81; MSE = 3.84). The physical carcass composition indicated a breed effect on all components and a sex effect for fat in the carcass. We conclude that body and carcass compositions can be estimated with rib(9-11) for purebred and crossbred NEL animals, but specific equations have to be developed for different groups of animals.

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Section: Carcass Chemical Compositionmentioning

confidence: 94%

Prediction of physical and chemical body compositions of purebred and crossbred Nellore cattle using the composition of a rib section1

Marcondes

Tedeschi

Filho

et al. 2012

Journal of Animal Science

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“…They also reported the correlations between width of shoulder and height at withers and height at floor of chest to be -.25 and -.18, respectively. Cook et al (1951) used data from the same steers reported on by Kohli et al (1951) A study by White and Green (1952) was made to ascertain relationships between live animal measurements and weights of major wholesale cuts.…”

Section: Review Of Literaturementioning

confidence: 99%

Photogrammetric measurements on live steers for predicting carcass characteristics

Hagan

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“…(1956) and Hankins and Burk (1938) both found that average daily gains of steers had no effect on final carcass grade. Cook et al (1951), however, reported that average daily gain had a significant positive correlation with beef slaughter grade and carcass grade. That is, there was a slight tendency for a steer with a higher average daily gain to have a higher carcass grade than one with a lower average daily gain.…”

Section: Climatic Effects On Carcass Compositionmentioning

confidence: 99%

The effects of placing cattle on feed at bimonthly intervals, housing, and stage of feeding upon feedlot performance and carcass grades

Pusillo

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Relationships of Five Body Measurements to Slaughter Grade, Carcass Grade, and Dressing Percentage in Milking Shorthorn Steers

Cited by 22 publications

References 0 publications

Prediction of physical and chemical body compositions of purebred and crossbred Nellore cattle using the composition of a rib section1

Prediction of physical and chemical body compositions of purebred and crossbred Nellore cattle using the composition of a rib section1

Photogrammetric measurements on live steers for predicting carcass characteristics

The effects of placing cattle on feed at bimonthly intervals, housing, and stage of feeding upon feedlot performance and carcass grades

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