Carcass composition of cull sows

1993 ◽  
Vol 73 (4) ◽  
pp. 829-838 ◽  
Author(s):  
N. N. Aziz ◽  
W. A. Rae ◽  
R. O. Ball ◽  
J. W. Allan
Keyword(s):  
Significant Influence ◽  
Live Weight ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Backfat Thickness ◽  
Class 1 ◽  
Electronic Probe ◽  
Fat Yield ◽  
Commercial Yield ◽  
Cull Sows

Two hundred and four sows were slaughtered in seven weight classes (WCs) from < 99.9-kg to > 225-kg carcass weight in 25-kg increments and 11 fat classes (FCs) from < 9.9-mm to > 55-mm backfat depth in 5-mm increments. Backfat thickness (probe fat) and loin muscle depth (probe lean) were measured on the left side of the carcass between 3rd and 4th last rib 7 cm from midline by electronic probe. The left side was cut into four primals: shoulder, ham, loin and belly. Shoulder, ham and loin were then separated into trimmed commercial cuts to determine commercial yield and then defatted and deboned to determine retail yield, lean yield, fat yield and bone yield. Dressing percentage was lowest for those sows in fat class 1 (77.4%) and highest for those in fat class 11 (83.7%). Percentage of shoulder and ham in the carcass side decreased, while the percentage of the loin and belly increased as WC and FC increased. FC produced significant effect on the percentage of the shoulder, loin and belly, whereas WC had significant influence only on the proportion of the shoulder and belly. There was a significant WC × FC interaction (P < 0.002) upon the percentage of the belly yield. The percentages of commercial yield, retail yield, lean yield and bone yield were reduced, and that of fat yield increased as WC and FC increased, but WC only produced significant effects on the percentage of lean and bone yield. Carcass composition of cull sows was better correlated to backfat thickness than carcass weight, since the increase in carcass weight as live weight increased was primarily fat. Key words: Carcass composition, sows, lean yield

An evaluation of beef carcass quality 2. Influence of variation in grazing intensity and the level of barley supplementation with silage on the carcass and meat quality of Friesian steers

1972 ◽  
Vol 15 (3) ◽  
pp. 229-237
Author(s):  
C. E. Hinks ◽  
J. H. D. Prescott
Keyword(s):  
Meat Quality ◽  
Compensatory Growth ◽  
Live Weight ◽  
Grazing Intensity ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Eating Quality ◽  
Winter Period ◽  
Carcass Quality

SUMMARYTwo experiments concerning the effects, on the carcass and meat characteristics of 18-months-old Friesian steers, of variation in grazing intensity and the level of barley feeding with silage are reported.Groups of 12 steers were grazed at different intensities over 5-month grazing periods, such that live-weight differences of 38 kg and 16 kg were recorded at housing. No compensatory growth was recorded during the subsequent winter feeding period.Whilst the grazing treatments had little effect on carcass or meat quality, higher levels of barley feeding with silage over the winter period (710 v. 410 kg/steer) had significant effects on live-weight gain, and increased carcass weight by 21 kg at slaughter. The higher yield of carcass weight was reflected in significant differences in carcass composition, joint proportions and retail cut-out value. Sixty per cent of the carcass weight difference was removed as trim fat. Differences in carcass fatness were not associated with any differences in eating quality.

The prediction of pork carcass composition using live animal echographic measurements from the Krautkramer USK7, Ithaca Scanoprobe 731C and Aloka SSD-210DXII Echo Camera

1991 ◽  
Vol 71 (4) ◽  
pp. 1001-1009 ◽  
Author(s):  
A. P. Sather ◽  
J. A. Newman ◽  
S. D. M. Jones ◽  
A. K. W. Tong ◽  
S. M. Zawadski ◽  
...  
Keyword(s):  
Key Words ◽  
Real Time ◽  
Live Weight ◽  
Carcass Composition ◽  
Residual Variance ◽  
Improvement Program ◽  
Live Animal ◽  
Ultrasonic Measurements ◽  
Yorkshire Pigs ◽  
Fat Yield

Live animal ultrasonic measurements of back fat depth and muscle depth were made on 130 Lacombe and 96 Yorkshire pigs within a weight range of 85.5–114.2 kg, using a Krautkramer USK7 (KK), an Ithaca Scanoprobe 731C (SC) and an Aloka SSD-210DXII Echo Camera (AEC), with an average carcass weight of 80.8 kg. Animals were assessed 1 d prior to slaughter at the mid-back and the loin site as specified by the Canadian Swine Improvement Program and the carcass grade site. Back fat depth measurements made by the SC, KK and AEC reduced the residual variance for lean yield by an additional 35, 43 and 45%, respectively, beyond adjusting for gender, breed and live weight. The mid-back site had less precision than the loin or grade sites for the prediction of both lean yield and fat yield, and there were no clear advantages for using the loin site in preference to the grade site. Since there are no easily identifiable landmarks for locating the grade site on the live pig, the loin site remains the preferred site for live animal evaluation. The addition of muscle-depth measurements to fat-depth measurements resulted in modest increases in the R2 (1–4%) in precision for the prediction of carcass composition. Differences in the ability of the KK and AEC to predict lean yield were small and, considering their cost, suggest that the application of real-time ultrasonics to live animal evaluation may not be practical at this time. Key words: Swine, ultrasound, lean yield, probe sites

Carcass composition and tissue weight distribution in purebred lambs from six breeds

1984 ◽  
Vol 8 ◽  
pp. 103-103
Author(s):  
A. J. Brown ◽  
B. W. Butler-Hogg ◽  
J. D. Wood
Keyword(s):  
Weight Distribution ◽  
Live Weight ◽  
Fat Content ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Carcass Quality ◽  
Quality Changes ◽  
Tissue Weight ◽  
Mature Size

Future improvements in British lamb sales depend on increasing the lean to fat ratio in cuts and joints offered for sale, since numerous surveys have shown an aversion to fat on the part of consumers. This ratio can be changed by manipulating breed and live weight at slaughter, since breeds of large mature size slaughtered at light weights are considerably leaner than those of small mature size slaughtered at heavy weights. However, there are other aspects of carcass value than overall lean and fat content. These include factors such as the proportions of individual joints and their composition. This study was carried out to examine carcass composition and carcass quality changes between 12 and 24 kg cold carcass weight (CCW) in 317 castrated males and 238 females from six pure breeds.

Evaluation of electronic meat-measuring equipment in predicting carcass composition in the live pig

1987 ◽  
Vol 45 (1) ◽  
pp. 97-102 ◽  
Author(s):  
S. M. Joyal ◽  
S. D. M. Jones ◽  
B. W. Kennedy
Keyword(s):  
Measuring Equipment ◽  
Treatment Effects ◽  
Carcass Traits ◽  
Subcutaneous Fat ◽  
Live Weight ◽  
Carcass Composition ◽  
Total Weight ◽  
Backfat Thickness ◽  
Yorkshire Pigs ◽  
Fat Thickness

AbstractAn electronic meat-measuring equipment (EMME) determination (average of three consecutive readings) and backfat thickness (averaged over two sites) were taken on each of 107 live Yorkshire pigs weighing approximately 110 kg. After slaughter, 10 carcass traits: killing out, grade fat (fat thickness at maximum loin of split carcass), in. longissimus area, total and individual weights of the four untrimmed primal cuts (butt, picnic, loin and ham) and total weight of lean and subcutaneous fat in the four primal cuts, were measured and used to evaluate the EMME and ultrasound backfat probe, alone and in combination, in predicting carcass merit. Value of prediction was measured as significant improvement in correlation over a base model (A/?2). After adjustment for live weight and treatment (diet, sex and housing) differences, the EMME alone was significant in predicting grade fat (A/?2 = 007), weight of the four untrimmed primal cuts (A/?2 = 0·03) and weights of ham (A/?2 = 0·04), lean (A/?2 = 0·17) and subcutaneous fat (A/?2 = 0·08). Backfat thickness alone was significant in predicting grade fat (AR2 = 0·21) and the weights of loin (AR2 = 0·03), ham (AR2 = 0·02), lean (AR2 = 0·09) and subcutaneous fat (AR2 = 0·42). Their combined information was superior in predicting fat thickness (AR2 = 0·24), weight of lean (AR2 = 0·21) and weight of subcutaneous fat (AR2 = 0·44). Similar results were obtained when treatment effects were ignored. Correlations of the EMME number with fat thickness, weight of total lean and total subcutaneous fat were 0·31, 0·49 and -0·30, respectively. Correlations of backfat thickness with grade fat, weight of total lean and total subcutaneous fat were 0·53, -0·35 and 0·72, respectively.

Effects of clover in the diet of grazed lambs on production and carcass composition

1993 ◽  
Vol 57 (2) ◽  
pp. 253-261 ◽  
Author(s):  
J. E. Vipond ◽  
G. Swift ◽  
R. C. Noble ◽  
G. Horgan
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Weight Gain ◽  
Acid Composition ◽  
Live Weight ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Live Weight Gain ◽  
Protein Retention ◽  
Tissue Lipids

AbstractThe effect of grazing clover on ewes and lambs was studied using nitrogen-fertilized grass (G) and grass/white clover pastures (GC) containing proportionately 0·18 clover. Carcasses of lambs grazed on GC were significantly heavier than carcasses of lambs grazed on G pastures. An interaction with weaning occurred. Carcasses from lambs grazed on GC for 53 days post weaning were 2·3 kg heavier (F < 0·01) but lambs slaughtered at weaning had similar carcass weights. Diet had no effect on relative joint components of carcasses. The effect of clover in the diet on carcass weight was attributed to higher levels of protein retention.Analysis of the fatty acid composition of intramuscular and subcutaneous and perirenal lipids indicated small but significant effects of diet. Lean tissue lipids of lambs grazing clover showed significant increases in C18:2 and reduced C20: 5 fatty acids. In tissue fats there were small increases in C14:0, C16:0 and C18:2 with reduced C18:1 content.Twin suckled lambs grazing GC for 94 days from turn-out in early April showed increased live-weight gain over lambs on G of 336 v. 287 g/day (s.e.d. 84; P < 0.001). Post weaning live-weight gain of lambs was 173 and 221 g/day on G and GC respectively. Sward height was maintained at 5.18 and 5.24 (s.e.d. 0.075) cm on G and GC paddocks by adjusting ewe numbers. GC pastures carried proportionately 0.82 of the stock on G pastures but output of lamb was similar at 1289 and 1247 kg/ha for G and GC respectively.Results showed that the production penalty of lower stocking rate associated with grass/clover v. grass fertilized with 190 kg nitrogen per ha was ameliorated by higher lamb live-weight gain and carcass weight without change in joint composition or nutritionally significant change in fatty acid composition of carcass tissues.

RELATIONSHIPS BETWEEN CARCASS WEIGHTS, BACKFAT AND LOIN MUSCLE DEPTH IN CULL SOWS

1990 ◽  
Vol 70 (4) ◽  
pp. 1141-1145 ◽  
Author(s):  
N. N. AZIZ ◽  
W. A. RAE ◽  
R. O. BALL ◽  
J. W. ALLAN
Keyword(s):  
Key Words ◽  
Frequency Distribution ◽  
Weight Distribution ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Weight Class ◽  
Cull Sows

The carcass weight distribution of the cull sow population was evaluated from 104 456 sows slaughtered in Ontario in 1988. Carcass weight, backfat depth and loin muscle depth were evaluated for 797 additional sows, randomly selected at a commercial abattoir. Approximately 85% of sows were between 100 and 200 kg with 4.5% less than 100 kg and 10.5% more than 200 kg carcass weight. The frequency distribution showed backfat depth was most frequently between 15 and 19.9 mm (26.73%) and 20 and 24.9 mm (29.99%). Sow carcasses are extremely diverse, varying 3- to 9-fold in backfat depth and 2- to 3-fold in loin muscle depth within any 25-kg weight class. Key words: Sows, carcass composition, backfat

scholarly journals Animal Carcass Pricing Grid. Evidences from the Romanian Pigmeat Market

2015 ◽  
Vol 19 (1) ◽  
pp. 19-26
Author(s):  
Roxana Savescu ◽  
Georg Ploetz
Keyword(s):  
European Union ◽  
Visual Inspection ◽  
Live Weight ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Selling Price ◽  
Flat Rate ◽  
Pricing Mechanism ◽  
Price Negotiation

Abstract Until the introduction of SEUROP system, price negotiation between pig producers and slaughterhouses was based on two subjective criteria: animal weight and visual inspection of the quality of pigs. To ensure producers a fair payment, European Union created the possibility of binding the price on two objective factors: carcass weight and carcass composition. This paper describes the pricing mechanism developed by Romania in order to respond to European Union requirements for ensuring a fair payment to pig producers. It raises the attention on the difficulties encountered by the producers in understanding the way the commercial value of a pig carcass is calculated in case the selling price is negotiated on a flat rate basis or on a lean content basis (per kg of carcass weight or per kg of live weight).

Path analysis and robust prediction of lamb carcass composition

1989 ◽  
Vol 48 (1) ◽  
pp. 139-148 ◽  
Author(s):  
G. L. Bennett
Keyword(s):  
Path Analysis ◽  
Live Weight ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Direct Effects ◽  
Management Group ◽  
Kidney Fat ◽  
Fat Composition ◽  
Group Relationships ◽  
Robust Prediction

ABSTRACTPath analysis was applied to correlations among lamb carcass measurements. Correlations were obtained from lamb carcasses averaging 15·7 kg and 270 g fat per kg carcass weight. Correlations were adjusted to represent within breed, sex and management group relationships. The purpose of the analysis was to study the relationships of carcass weight with carcass measurements and to identify carcass measurements that are independent other than through their relationships with carcass chemical fat concentration and carcass weight. The direct effect of live weight on all carcass measurements was positive. Thus, heavier carcasses with the same fat concentration had larger fat and tissue depths, muscle measurements, leg measurements and kidney fat weights. The results of correlations among the residuals suggest that fat depths C and J, specific gravity, muscle width A and kidney fat weight are nearly independent estimates of carcass composition in the sense that they are only correlated through their relationships with carcass weight and carcass fat composition. Robust predictors of carcass composition were developed by first adjusting carcass measurements for the direct effects of carcass weight and then computing regressions on the adjusted measurements. These predictors appeared to be better predictors of environmental and genetic differences than least-squares multiple regression yet reduced the accuracy of within group prediction only slightly.

Quantitative anatomical studies of the composition of the pig at 50, 68 and 92 kg. carcass weight I. Experimental material and methods

1962 ◽  
Vol 59 (2) ◽  
pp. 207-214 ◽  
Author(s):  
A. Cuthbertson ◽  
R. W. Pomeroy
Keyword(s):  
Weight Loss ◽  
Live Weight ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Average Weight ◽  
Large White ◽  
Anatomical Studies ◽  
Fat Deposits ◽  
Intermuscular Fat ◽  
Dissection Technique

1. The object of the experiment was to make a detailed investigation of the carcass composition of Large White hogs at 68, 91 and 118 kg. live weight (i.e. 50, 68 and 92 kg. carcass weight). Ten hogs were dissected at each stage.2. A dissection technique suitable for this investigation is described, involving the dissection of one side into individual bones and muscles, subcutaneous and intermuscular fat deposits, skin, tendon, glands and blood vessels. Some possible modifications of the method for future investigations are also discussed.3. The complete dissection of one side took approximately 110 man-hours and the average weight loss in dissection was 0·798%.

Carcass composition in lambs of Greek dairy breeds of sheep

1990 ◽  
Vol 50 (2) ◽  
pp. 261-269 ◽  
Author(s):  
D. Zygoyiannis ◽  
K. Stamataris ◽  
S. Kouimtzis ◽  
J. M. Doney
Keyword(s):  
Live Weight ◽  
General Characteristic ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Equal Weight ◽  
Equal Proportion ◽  
Quadratic Regression ◽  
The United Kingdom ◽  
Breed Differences ◽  
The Mean

ABSTRACTNine male and nine female lambs each from the Karagouniko (K), Chios (C) and East Friesland (F) breeds were weaned at a mean age of 50 days and were killed over a commercial range of live weight from 16 to 44 kg (carcass weights 6 to 22 kg).Carcass weight was linearly related to fasted live weight prior to slaughter (r = 0·994). There were significant but small differences between breeds in mean weight of lungs, pelt and internal fat. The carcass components of bone, muscle and fat tissues were related to carcass weight by linear or quadratic regression. Adjusted to mean carcass weight, the mean weight of bone did not differ between breeds (2·82 kg, s.e. = 0·056 at 12·8 kg carcass). The K and C lambs had significantly less muscle than the F lambs (6·77, 6·63 and 8·20 kg, respectively, s.e.d. = 0·094) and more fat (2·87, 2·95 and 1·29 kg, respectively, s.e.d. = 0·017) when compared at mean carcass weight. The breed differences were significant over the whole range whether compared at equal weight or at an equal proportion of estimated mature weight. At the same proportion of carcass fat, corresponding to the United Kingdom market average (250 g/kg) the calculated carcass weights were 16, 17 and 30 kg, respectively, for K, C and F lambs.It is concluded that the Friesland breed differs from many others in the proportions of muscle or fat at corresponding carcass weights but this difference is not a general characteristic of dairy sheep. Comparison of breeds at defined proportions of carcass components, as determined by market standards, can be effectively achieved by serial slaughter over a suitable weight range.

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