The effect of slaughter weight on the carcass characteristics of pork with sex type as co-variable

2016 ◽  
Vol 56 (1) ◽  
pp. 55 ◽  
Author(s):  
E. Pieterse ◽  
L. C. Hoffman ◽  
F. K. Siebrits ◽  
E. L. Gloy ◽  
E. Polawska
Keyword(s):  
Subcutaneous Fat ◽  
Lumbar Vertebrae ◽  
Carcass Characteristics ◽  
Intramuscular Fat ◽  
Muscle Area ◽  
Eye Muscle ◽  
Slaughter Weight ◽  
Sex Type ◽  
Fat Thickness ◽  
Dressing Percentage

A study was conducted with 192 pigs of three sex types with treatments according to slaughter weight (65 kg to 144 kg). The main statistical differences observed were for slaughter weight with significant (P < 0.05) and highly significant (P < 0.01) differences describing more than 10% of variance observed for all characteristics (liveweight, warm carcass weight, dressing percentage, eye muscle area, subcutaneous fat thickness, intramuscular fat area, subcutaneous fat : eye muscle area, intramuscular fat : eye muscle area, fat thickness, muscle depth, carcass length, ham circumference, ham length and chest depth) measured. Sex differences (P < 0.05) were also observed for dressing percentage, fat measurements and muscle depth measured between the 5th and 6th lumbar vertebrae. Sex type differences, in all instances, accounted for 10% or less variance except for subcutaneous fat : eye muscle area ratio (18.47%). It was shown that although significant sex type differences (P < 0.05) existed; slaughter weight had the largest effect on carcass characteristics in the given circumstances accounting for most of the observed variance.

scholarly journals Sire breed effect on carcass and temperament traits

2018 ◽  
Vol 39 (6) ◽  
pp. 2717
Author(s):  
Leandro Lunardini Cardoso ◽  
Joal José Brazzale Leal ◽  
Marcelo Henrique Giordano Nunes ◽  
Bruno Borges Machado Teixeira ◽  
Bruna Pena Sollero ◽  
...  
Keyword(s):  
Subcutaneous Fat ◽  
Carcass Weight ◽  
Longissimus Muscle ◽  
Muscle Area ◽  
Slaughter Weight ◽  
Subcutaneous Fat Thickness ◽  
Fat Thickness ◽  
Dressing Percentage ◽  
Productive Traits ◽  
Sire Breed

This paper aimed to identify and evaluate the effects of sire breed on temperament and productive traits of different cross-breeds between Nellore (NE), Tabapua (TB), and Brahman (BR) bulls mated with Angus cows (AN), as well as the relationship between temperament and productive traits. The productive traits measured in this study include slaughter weight and post weaning weight gain. Temperament was assessed by flight-speed (FS). Carcass data collected in this study include hot carcass weight, hot carcass percentage, cold dressing percentage, carcass length, initial pH, ultimate pH, subcutaneous fat thickness and carcass longissimus muscle area. The sire breed effect was greater for slaughter weight. Hot carcass weight was not affected by the sire breed. The longissimus muscle area was larger for AN x TB and AN x NE crossbreeds than for AN x BR crossbreeds. Subcutaneous fat thickness and cold dressing percentage were not affected by sire breed. The offspring of NE, TB, and BR sires mated with AN cows had similar carcass measurements, except for the longissimus muscle area, which was smaller for offspring sired by the Brahman breed. The temperament trait was not influenced by sire breed.

Growth and carcass characteristics of crossbred and straightbred Hereford steers. II. Carcass measurements and composition

1981 ◽  
Vol 32 (1) ◽  
pp. 171 ◽  
Author(s):  
JM Thompson ◽  
R Barlow
Keyword(s):  
Subcutaneous Fat ◽  
Carcass Characteristics ◽  
Allometric Equation ◽  
The Body ◽  
The Other ◽  
Carcass Weight ◽  
Muscle Area ◽  
Eye Muscle ◽  
Fat Thickness ◽  
Breed Crosses

The effect of sire breed on the growth and development of carcass characteristics was examined in 104 steer carcasses, over the weight range of c. 300 to 600 kg liveweight. The carcasses were obtained from 28 straightbred Hereford, 27 Brahman x Hereford, 23 Simmental x Hereford and 26 Friesian x Hereford steers, which were grown on pasture and slaughtered in four groups when the Herefords weighed c. 270, 370, 470 and 570 kg liveweight. Changes in carcass characteristics with weight were examined by using the linear form of the allometric equation (log10Y = log10A+blog10X). As liveweight increased, the proportion of carcass in the body increased (b = 1.152). At the same liveweight, Brahman cross steers had heavier carcasses than the Hereford steers, which were heavier than either the Simmental or Friesian cross steers (P < 0.05). Fat thickness at the 12th-13th rib site, and kidney and channel fat weight both increased at a proportionally faster rate than carcass weight (b = 1.511 and 1 567 respectively). At the same carcass weight, Hereford and Brahman cross carcasses had a greater fat thickness than Simmental and Friesian cross carcasses (P i 0.05). Differences between sire breeds in kidney and channel fat weight were not significant (P > 0.05). C:rcass length and eye muscle area increased at a proportionally slower rate than carcass weight (b = 0.268 and 0.466 respectively). At the same carcass weight, Friesian cross carcasses were longer, and Simmental cross carcasses had a larger eye muscle area than the other breed crosses (P < 0.05). As total side weight increased, the proportions of subcutaneous and intermuscular fatAincreased (b = 1.554 and 1.535 respectively), and the proportions of muscle and bone decreased (b = 0.938 and 0.676 respectively). At the same side weight, the Hereford and Brahman cross carcasses had more subcutaneous fat than the Simmental and Friesian cross carcasses (P < 0.05). The Hereford carcasses had more intermuscular fat than the Simmental cross carcasses, which had more muscle than the other breed crosses (P < 0.05). Friesian cross carcasses had more bone than the Simmental crosses, with Brahman cross and Hereford carcasses having the least bone (P < 0.05). Brahman cross carcasses had a higher conformation score than the Simmental cross and Hereford carcasses, the Friesian cross carcasses having the lowest (P < 0.05). Samples of the M. longissimus from Brahman cross carcasses had a higher Warner-Bratzler shear force than samples from the other breed crosses (P < 0.05).

Relationships among carcass quality characteristics between and within carcass quartering sites

1998 ◽  
Vol 49 (2) ◽  
pp. 285 ◽  
Author(s):  
S. Baud ◽  
C. M. Wade ◽  
M. E. Goddard
Keyword(s):  
Water Content ◽  
Subcutaneous Fat ◽  
Intramuscular Fat ◽  
Quality Characteristics ◽  
Carcass Quality ◽  
Longissimus Muscle ◽  
Fat Percentage ◽  
Muscle Area ◽  
Intermuscular Fat ◽  
Fat Thickness

Carcass quality characteristics were measured on 511 steers of 4 breeds that were destined for the Japanese market. All steers had carcass measurements taken at the 10th/11th rib interface, while 103 steers had additional measurements made on the same characteristics at the 5th/6th rib interface. Australian marbling score, longissimus muscle area, intramuscular fat percentage, intramuscular water content, Japanese intermuscular fat thickness, Japanese subcutaneous fat thickness, Japanese rib thickness, and meat pH were measured in the study. These measurements allowed the phenotypic relationships between the different carcass quality traits measured at the 10th/11th rib interface to be calculated. Significant positive correlations were observed among measurements of carcass fatness, and significant negative correlations were observed between carcass fatness and carcass water content. Angus and Murray Grey cattle had higher levels of marbling and intramuscular fat than Hereford and Poll Hereford cattle The data enabled Australian, USDA, and Japanese marbling standards to be compared on the basis of intramuscular fat percentage determined by an ether extraction process. Differences between the same carcass characteristics taken at 5th/6th and 10/11th rib interfaces of the longissimus dorsi were estimated from the 103 steers measured at both sites. Correlations between the rib sites were high for marbling, intramuscular fat, and intramuscular water, but low for longissimus muscle area, intermuscular fat thickness, and pH.

scholarly journals Effect of Breed Types and Castration on Carcass Characteristics of Boer and Large Frame Indigenous Veld Goats of Southern Africa

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1884 ◽  
Author(s):  
Gertruida L. van Wyk ◽  
Louwrens C. Hoffman ◽  
Phillip E. Strydom ◽  
Lorinda Frylinck
Keyword(s):  
Subcutaneous Fat ◽  
Live Weight ◽  
Intramuscular Fat ◽  
Muscle Area ◽  
Eye Muscle ◽  
Significant Difference ◽  
Kidney Fat ◽  
Pelleted Diet ◽  
The Right ◽  
Boer Goats

Weaner male Boer Goats (BG; n = 36; 21 bucks and 15 wethers) and large frame Indigenous Veld Goats (IVG; n = 41; 21 bucks and 20 wethers) were raised on hay and natural grass ad libitum and the recommended amount of commercial pelleted diet to a live weight between 30 and 35 kg. Carcass quality characteristics (live weight, carcass weights, dressing %, chilling loss and eye muscle area) were measured. The right sides of the carcasses were divided into wholesale cuts and dissected into subcutaneous fat, meat and bone. Large frame Indigenous Veld Goat (IVG) wethers were slightly lighter than the IVG bucks with no significant difference observed between BG. Wethers compared to bucks had higher dressing %, subcutaneous fat % in all primal cuts, intramuscular fat %, kidney fat % and, overall, slightly less bone %. Some breed–wether interactions were noticed: IVG wethers were slightly lighter than the IVG bucks, but the IVG bucks tended to produce higher % meat compared to other test groups. Judged on the intramuscular fat % characteristics, it seems as if wethers should produce juicier and more flavorsome meat compared to bucks.

Prediction of carcass composition in heavy-weight grass-fed and grain-fed beef cattle

1993 ◽  
Vol 57 (1) ◽  
pp. 65-72 ◽  
Author(s):  
R. Priyanto ◽  
E. R. Johnson ◽  
D. G. Taylor
Keyword(s):  
Subcutaneous Fat ◽  
Carcass Composition ◽  
Muscle Area ◽  
Muscle Weight ◽  
Eye Muscle ◽  
Heavy Weight ◽  
Beef Carcasses ◽  
Feeding Regimes ◽  
Fat Thickness ◽  
Regression Slopes

AbstractThe effects of breed and feeding on the prediction of carcass fat and carcass muscle using rump ‘P8’ subcutaneous fat thickness were investigated in heavy-weight beef carcasses (277 to 512 kg). Hot side weight, eye muscle area and their combination added to fat thickness were evaluated as additional predictors. The predictions of carcass composition from grass-fed steers were validated on data from grain-fed steer carcasses. There were differences between breeds and feeding regimes in the level of tissue proportions at a given fat thickness, but no differences in regression slopes. Fat thickness alone was, therefore, not an accurate indicator of the proportions of side fat or side muscle in heavy-weight carcasses. In the grain-fed steers, the correlations between P8 and tissue proportions were relatively strong, and the addition of hot side weight and eye muscle area, alone or in combination, did not significantly improve the predictions. Conversely, in grass-fed steers where the relationships between carcass composition and fat thickness were weaker, the addition of hot side weight and eye muscle area made a significant contribution to prediction. In the predictions of tissue weights, hot side weight and eye muscle area when added to fat thickness, significantly contributed to the prediction of side muscle weight for both feeding systems. These three variables did not account for the observed differences between breeds or feeding regimes in the proportion or weight of fat, nor in the proportion of muscle; but they effectively eliminated these groups' differences in the estimation of muscle weight.

Identification of a Brahman sire whose progeny have high marbling scores and high intramuscular fat content

1998 ◽  
Vol 38 (8) ◽  
pp. 785 ◽  
Author(s):  
C. Gazzola ◽  
C. J. O'Neill ◽  
J. E. Frisch
Keyword(s):  
Bos Indicus ◽  
Subcutaneous Fat ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Beef Industry ◽  
Muscle Area ◽  
Lower Growth ◽  
Eye Muscle ◽  
Tropical Adaptation ◽  
Intramuscular Fat Content

Summary. A Brahman sire (Select Brahman) whose steer progeny had both high marbling scores and high intramuscular fat content has been identified. The effect was independent of dam breed (5 different dam breeds were analysed), was present in both grain-finished and pasture-finished progeny, and was independent of hormone growth promotant treatment. From pasture, over twice as many progeny from the Select sire (62.5%) had high marbling scores as progeny from 10 other Brahman sires (25.9%). The effect was not as marked in grain-finished steers but the Select sire still produced one-third more high marbling progeny (84.6%) than the other sires (63.6%). The Select sire’s progeny were equal to or better than progeny from Tuli sires in producing high marbling scores. The intramuscular fat content (3.5 ± 0.3 g/100 g) of the progeny from the Select sire was greater than double that of progeny from other Brahman sires (1.9 ± 0.2 g/100 g; P<0.0001) and higher than progeny from Tuli sires (2.3 ± 0.1 g/100 g; P<0.0001). The increased marbling and intramuscular fat content were not associated with increased subcutaneous fat deposition, decreased muscle deposition, lower growth rate or smaller mature size since there were no differences in age, hot standard carcass weight, rump fat depth and rib eye muscle area between the Select sire’s progeny and those of other Brahman sires. The identification of a high marbling trait in a Bos indicus sire is of considerable significance to the northern Australian beef industry because it enables markets requiring marbled carcasses to be targeted while maintaining the advantages of tropical adaptation.

Maternal body composition in seedstock herds. 2. Relationships between cow body composition and BREEDPLAN EBVs for Angus and Hereford cows

2018 ◽  
Vol 58 (1) ◽  
pp. 125
Author(s):  
S. J. Lee ◽  
K. A. Donoghue ◽  
W. S. Pitchford
Keyword(s):  
Body Composition ◽  
Maternal Effect ◽  
Milk Fat ◽  
Subcutaneous Fat ◽  
Intramuscular Fat ◽  
The Body ◽  
Muscle Area ◽  
Eye Muscle ◽  
Estimated Breeding Values ◽  
Do So

Relationships between BREEDPLAN estimated breeding values (EBVs) for 600-day weight, maternal effect on calf weaning weight (Milk), fat depth at P8 site (Rump), 12/13th rib fat depth (Rib), eye muscle area (EMA), and intramuscular fat (IMF) with body composition measures in first- and second-parity Angus and Hereford cows were investigated. More than 4000 Angus and 1000 Hereford cows were measured for weight, height, ultrasound P8 fat depth (P8), 12/13th rib fat depth (RIB), loin EMA and IMF (%) at pre-calving and weaning. The body composition measurements were then regressed against mid-parent BREEDPLAN EBVs. Increased 600-day weight EBV was associated with increased weight and height but decreased P8 and rib fat depths and EMA when considered on a weight-constant basis. BREEDPLAN EBVs for Rump, Rib, EMA and IMF were closely related to the equivalent ultrasound measure in Angus and Hereford cows at pre-calving and weaning in the first two parities. These results indicate that current BREEDPLAN carcass EBVs are associated with cow body composition, so if producers want to change the body composition of their cows, they can do so using existing BREEDPLAN carcass EBVs, and there appears no requirement for additional EBVs to describe cow body-composition traits for subcutaneous fat, EMA and IMF.

A comparison of Charolais × Jersey and Friesian animals for vealer and steer beef production

1978 ◽  
Vol 18 (93) ◽  
pp. 505
Author(s):  
FJ Mickan ◽  
SA Spiker ◽  
RH Hallett
Keyword(s):  
Milk Intake ◽  
Local Market ◽  
Beef Production ◽  
Eye Muscle ◽  
Breed Difference ◽  
Significant Difference ◽  
Fat Thickness ◽  
Dressing Percentage

Charolais sires were mated to Jersey dams and the progeny compared with Friesians for vealer (33 weeks) and steer (90 weeks) beef production. Nurse cows double-suckled one vealer of each breed. No significant difference in growth to slaughter between the Charolais x Jersey (C x J) and Friesian (0.79, 0.70 kg day-1 respectively) was recorded. The C x J vealers produced a significantly heavier carcase. Neither breed had sufficient fat cover (< 0.3 mm) for vealer production. No breed difference existed in the edible meat and fat proportions but the Friesian carcase had a larger percentage of bone. C x J had a significantly greater proportion of hindquarter in the carcase than the Friesian but no breed difference was recorded for either high or low priced cuts. Plunketting showed no difference in milk intake between breeds, but 24-hourly observations revealed that the C x J animals were usually the first to arrive at and last to leave the suckled cow. Steers double-suckled to weaning (1 2 weeks) and then run together until slaughtering gained 0.56 kg animal-1 day-1. There was no breed difference in carcase weights but the C x J had a significantly higher dressing percentage (53.1 vs. 50.5) and 25.3 per cent greater area of eye muscle. Again, fat thickness of the C x J (2.1 mm) and Friesian (1.8 mm) was far below the optimum (7-10 mm) required for the local market.

scholarly journals Effect of heat stress on carcass and meat quality of indigenous sheep of Bangladesh

2014 ◽  
Vol 43 (2) ◽  
pp. 147-153 ◽  
Author(s):  
MS Rana ◽  
MA Hashem ◽  
S Akhter ◽  
M Habibullah ◽  
MH Islam ◽  
...  
Keyword(s):  
Heat Stress ◽  
Meat Quality ◽  
Carcass Characteristics ◽  
Muscle Area ◽  
Eye Muscle ◽  
Treatment Groups ◽  
Indigenous Sheep ◽  
Heat Treated ◽  
Significant Difference

The research was conducted to study the effect of heat stress on carcass characteristics and meat quality in indigenous sheep. Nine sheep were divided into three groups which were almost similar in age, sex and weight. Three groups were divided as zero hour (T0), four hours (T4) and eight hours (T8) heat exposure to direct sunlight. During experimental period temperature–humidity index (THI) value was calculated as 27.09 which indicated T4 and T8 groups were subjected to heat stress condition for at least four hours and eight hours respectively every day. Slaughter weight, body length and heart girth had no significant difference among the treatment groups. Dry matter, ash and ether extract had no significant difference (p>0.05) among the treatment groups but crude protein were increased with the increase of heat stress from T0 to T8 group (p<0.05). Drip loss was increased (p<0.05) in non-exposure group than treated groups but there is no significant result (p>0.05) found in pH and cooking loss. Carcass weight and eye muscle area had no significant difference (p>0.05) among the treatment groups but dressing percentage was decreased with the increase of time in heat treated groups (p<0.01). Significant difference (p<0.05) were found in weight of heart, kidney, lung + trachea and pluck between control and heat treated groups. The significant difference (p>0.05) in empty gut was found in gut with content and gut fill in heat treated groups. It can be concluded that heat stress had significant changes on carcass characteristics and meat quality of indigenous sheep.DOI: http://dx.doi.org/10.3329/bjas.v43i2.20717 Bang. J. Anim. Sci. 2014. 43 (2): 147-153

scholarly journals Selection for higher body weight in Nelore cattle is effective in achieving an increase of longissimus muscle area without reducing subcutaneous fat thickness

2012 ◽  
Vol 41 (6) ◽  
pp. 1426-1432 ◽  
Author(s):  
Tiago Roque Pinheiro ◽  
Maria Eugênia Zerlotti Mercadante ◽  
Lucia Galvão de Albuquerque ◽  
Sarah Figueiredo Martins Bonilha ◽  
Fábio Morato Monteiro
Keyword(s):  
Body Weight ◽  
Subcutaneous Fat ◽  
Longissimus Muscle ◽  
Muscle Area ◽  
Subcutaneous Fat Thickness ◽  
Fat Thickness ◽  
Selection For ◽  
Nelore Cattle
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