scholarly journals EFFECTS OF BREED OF SIRE AND BREED OF DAM OF COW ON CARCASS CHARACTERISTICS OF THREE-WAY CROSS BEEF CATTLE REARED AT TWO LOCATIONS

1983 ◽  
Vol 63 (4) ◽  
pp. 791-802 ◽  
Author(s):  
G. W. RAHNEFELD ◽  
H. T. FREDEEN ◽  
G. M. WEISS ◽  
J. A. NEWMAN ◽  
J. E. LAWSON
Keyword(s):  
Beef Cattle ◽  
Key Words ◽  
Carcass Characteristics ◽  
Carcass Weight ◽  
Cattle Breeds ◽  
Kidney Fat ◽  
Dressing Percentage ◽  
Carcass Cuts

Carcass characteristics of 3673 steers and heifers born over a 6-yr period 1973–1978 at Brandon, Manitoba (farm conditions) and Manyberries, Alberta (range conditions) were compared. Calves weaned at Manyberries were fed and evaluated at Lacombe. The progeny were out of 10 specific F1 crosses of dams mated to bulls of the Charolais (C), Simmental (S), Limousin (L) and Chianina (Chi) breeds. Dam crosses included the Hereford × Angus (HA) and crosses sired by C, S and L sires out of H, A and Shorthorn (N) dams. Breed of sire of dam effects indicated that progeny from S cross cows generally had the heaviest carcasses S = C > L, the greatest carcass weight per day of age S = C > L, the highest percentage of dissected bone of the round S > C > L and rib S > C = L, the highest proportions of brisket S > L > C and flank S > L = C, and carried more kidney fat (percent liveweight) S > C = L and average rib fat S > C = L. Progeny from Limousin and Charolais cross cows had the highest dressing percentage [Formula: see text] and rib eye area/100 kg carcass wieght L > C > S while those from Limousin cross cows had the highest proportion of long loin and the combined lean cuts (rib, round and long loin) a higher percentage of dissected lean in the round L > C > S and the highest lean-to-bone ratio L > C > S. Progeny from dams of Shorthorn breeding generally had the heaviest carcasses, the greatest carcass weight per day of age, the highest percentage kidney fat and at Brandon the greatest proportions of plate and brisket. Hereford cross dams consistently produced progeny with the highest percentage head H = A > N, hide [Formula: see text], feet H > A = N, percentage bone in the long loin [Formula: see text], round [Formula: see text], and rib [Formula: see text], and the highest percentage lean in the long loin H > N (Brandon) and chuck H > N (Brandon). The progeny from Angus cross dams carried the greatest average rib fat [Formula: see text], had the greatest rib eye area/100 kg carcass weight [Formula: see text], the highest percentage lean in the round [Formula: see text], and the highest lean to bone ratio A > H = N. Key words: Cattle, breeds, carcass, cuts, composition

CARCASS CHARACTERISTICS OF THREE-WAY CROSS PROGENY FROM CHAROLAIS-, SIMMENTAL- AND LIMOUSIN-SIRED F1 DAMS VS. HEREFORD × ANGUS DAMS

1984 ◽  
Vol 64 (3) ◽  
pp. 597-611
Author(s):  
G. W. RAHNEFELD ◽  
H. T. FREDEEN ◽  
G. M. WEISS ◽  
J. A. NEWMAN ◽  
J. E. LAWSON
Keyword(s):  
Key Words ◽  
Genetic Interaction ◽  
Carcass Characteristics ◽  
The Other ◽  
Carcass Weight ◽  
Cattle Breeds ◽  
Dressing Percentage ◽  
Carcass Cuts

Carcass characteristics of 3673 steers and heifers born over a 6-yr period from 1973 to 1978 at Brandon, Manitoba (farm conditions) and Manyberries, Alberta (range conditions) were compared. Calves weaned at Manyberries were fed and evaluated at Lacombe, Alberta. The progeny produced were out of 10 specific F1 crosses of dam mated to bulls of the Charolais (C), Simmental (S), Limousin (L) and Chianina (Chi) breeds. Dam crosses included the Hereford × Angus (HA) and crosses sired by C, S and L sires out of H, A and Shorthorn (N) dams. The progeny from SN dams (Brandon) and the three S-cross dams (Lacombe) had the highest carcass weight per day of age and the progeny from LH dams (Brandon) and L dams (Lacombe) the lowest and equal to progeny from HA dams. The progeny from LN dams (Brandon) and the three L-cross dams (Lacombe) had the highest dressing percentage and the progeny from the SH dams the lowest and equal to the HA progeny. The progeny from HA dams at both locations had greater levels of average rib fat than progeny from the exotic-cross dams. At both locations, the largest rib eye area/wt (cm2/kg) was recorded by progeny from the LA dams and the smallest by progeny from the SN and CN dams and they did not differ from the HA progeny. The progeny from all exotic-cross dams at both locations recorded a higher proportion of round than progeny from the HA dams with the highest proportions being recorded by the progeny from LH dams (Brandon) and progeny from CH, CN and SN dams (Lacombe). The progeny from HA dams (Lacombe) exceeded the progeny from all exotic-cross dams in the proportion of long loin while the progeny from HA dams (Brandon) exceeded the progeny from CA, CN and SN dams. In percentage of lean in the round, the progeny from CN, SH and SN dams (Brandon) and SN dams (Lacombe) were the lowest and equal to progeny from the HA dams. The progeny from HA dams at both locations generally had the lowest percentage of bone in the long loin with progeny from the SN dams (Brandon) and progeny from CH dams (Lacombe) recording the highest percentage. The progeny from the SN and CH dams (Brandon) and the progeny from the SH and SN dams (Lacombe) recorded the highest percentage bone in the round with the progeny from CA, CN and LN dams (Brandon) and progeny from CA, SA, LH and LN dams (Lacombe) the lowest and equal to the progeny from HA dams. The progeny from exotic cross dams at both locations exceeded the progeny from HA dams in percentage lean per day of age for the combined trait long loin and round. The progeny from L-cross dams (Lacombe) had the highest lean-to-bone ratio of the combined trait long loin and round with the progeny from HA dams intermediate and equal to the progeny from the other dam crosses. At Brandon, the progeny from the LA dams had the highest lean-to-bone ratio with the progeny from the CH, CA, CN, SA and LH the lowest and equal to the HA progeny. Dam by year, dam by sex, year by sex and the genetic interaction involving breed of sire and breed of dam were not statistically significant. Key words: Cattle, breeds, carcass, cuts, composition

BREED OF TERMINAL SIRE EFFECTS ON CARCASS CHARACTERISTICS OF THREE-WAY CROSS BEEF CATTLE REARED AT TWO LOCATIONS

1983 ◽  
Vol 63 (3) ◽  
pp. 523-549 ◽  
Author(s):  
G. W. RAHNEFELD ◽  
H. T. FREDEEN ◽  
G. M. WEISS ◽  
J. A. NEWMAN ◽  
J. E. LAWSON
Keyword(s):  
Beef Cattle ◽  
Key Words ◽  
Degrees Of Freedom ◽  
Carcass Characteristics ◽  
Carcass Weight ◽  
Paired Comparisons ◽  
Breed Differences ◽  
Terminal Sire ◽  
Sire Breed ◽  
Carcass Cuts

Carcass characteristics of 3673 steers and heifers born over a 6-yr period (1973–1978) at Brandon, Manitoba (farm conditions) and Manyberries, Alberta (range conditions) were compared. Calves weaned at Manyberries were fed and evaluated at Lacombe. The progeny produced were out of 10 specific F1 crosses of dams mated to bulls of the Charolais (C), Simmental (S), Limousin (L) and Chianina (Chi) breeds. Dam crosses included the Hereford × Angus (HA) and crosses sired by C, S and L sires out of H, A and Shorthorn (N) dams. Terminal sire breed differences in the paired comparisons involving progeny of the Chi (the comparisons with maximum degrees of freedom) indicated that their carcass weight per day of age averaged 1.1% greater than C, 3.6% greater than S and 6.4% greater than L at both locations [Formula: see text]. Simmental progeny had significantly heavier (P = 0.0001) hide weights as a percentage of liveweight and significantly lower (P = 0.0001) dressing percentages than the progeny from C, L and Chi sires. Limousin and Chi-sired progeny had the lowest percentage of hide weight and the highest dressing percentage. Limousin progeny averaged 5.2% greater rib eye area/wt (cm2/kg) than Chi progeny P = 0.0001). Chianina progeny had the lowest proportions (percent of hot carcass weight) of long loin, rib, brisket and flank and the highest proportions of round and the combined trait of rib, round and long loin (P < 0.05). Chianina progeny had the highest percentage of lean in the rib, chuck and long loin while L-sired progeny had the highest percentage lean in the round. Chianina progeny had the highest and L progeny the lowest percentage bone in the rib, chuck, round and long loin. Limousin progeny had the highest lean:bone ratios but least percent lean per day of age at the long loin and round. At both locations significant terminal sire breed by year interactions were observed for all traits. The interactions of breed of dam by year, by sex, and by breed of sire and the interaction of year by sex were nonsignificant. Key words: Cattle, breeds, carcass, cuts, composition

The effect of castration age, method and implant regime on growth and carcass traits of male beef cattle

1991 ◽  
Vol 71 (2) ◽  
pp. 301-309 ◽  
Author(s):  
R. D. H. Cohen ◽  
B. D. King ◽  
H. H. Nicholson ◽  
E. D. Janzen
Keyword(s):  
Beef Cattle ◽  
Key Words ◽  
Carcass Traits ◽  
Carcass Characteristics ◽  
Carcass Weight ◽  
Feedlot Performance ◽  
Weaning Weight ◽  
Growing Period

In 1984–1985 and 1985–1986 groups of 136 and 127 male calves were used to assess the effects of multiple implants (Ralgro and Steeroid), castration time (early and late) and castration method (surgical and chemical) on growth to weaning and feedlot performance and carcass characteristics. Ralgro increased calf rate of gain to weaning (P < 0.05) and adjusted weaning weight (P < 0.01) but did not affect rate of gain during the feedlot period. Although Ralgro increased (P < 0.001) weight at slaughter, it took longer (P < 0.05) for implanted cattle to reach Canada A1 than unimplanted cattle. Steeroid did not affect rate of gain to weaning but did increase (P < 0.05) adjusted weaning weight. Steeroid increased (P < 0.05) rate of gain relative to unimplanted cattle during the growing period in the feedlot and cattle implanted four times from birth to slaughter gained more (P < 0.05) than cattle implanted twice (birth and weaning). For the entire feedlot period, bulls receiving Steeroid gained faster (P < 0.05) than unimplanted bulls with no difference (P > 0.05) between implant groups (two or four implants). Ralgro implants increased (P < 0.05) carcass weight, rib-eye area and cutability while Steeroid increased (P < 0.05) only carcass weight. However, when rib-eye area was adjusted for carcass weight, the effect of Ralgro was not significant (P > 0.05). Bulls had greater (P < 0.05) shipping weight, carcass weight, rib-eye area, dressing percent and cutability than steers. Age at castration (early or late) had no effect on feedlot performance or carcass traits while method of castration (surgical or chemical) had some effects (P < 0.05) on ADG, liveweight, carcass weight and rib-eye area. Key words: Castration, Ralgro, Steeroid, beef, growth, carcass

CARCASS CHARACTERISTICS OF BISON (Bison bison) STEERS

1986 ◽  
Vol 66 (1) ◽  
pp. 293-295 ◽  
Author(s):  
A. W. L. HAWLEY
Keyword(s):  
Body Weight ◽  
Key Words ◽  
Carcass Characteristics ◽  
Total Body Weight ◽  
Fat Deposition ◽  
Carcass Weight ◽  
Bison Bison ◽  
Dressing Percentage ◽  
Total Body

Six bison (Bison bison) steers, slaughtered at 2.5 yr of age after receiving a finishing ration for 78 days, averaged 444 kg total body weight with a dressing percentage of 60%. Approximately 46% of the carcass was in the hindquarter. The carcasses averaged 3.1 cm fat depth at the top of the ribeye and 1.1 cm at the bottom. Fat deposition was localized to the top of the shoulder and loin and around the kidneys. The yield of marketable meat averaged 77% of cold carcass weight. Key words: Bison, carcass characteristics

scholarly journals Analysis of Growth Intensity and Carcass Characteristics of Wagyu‑Aberdeen Angus Crossbred Steers

2018 ◽  
Vol 66 (4) ◽  
pp. 897-903 ◽  
Author(s):  
Renáta Toušová ◽  
Jaromír Ducháček ◽  
Matúš Gašparík ◽  
Martin Ptáček ◽  
Lubor Kitzler
Keyword(s):  
Carcass Characteristics ◽  
Mean Value ◽  
Carcass Weight ◽  
Average Weight ◽  
Marbling Score ◽  
Average Value ◽  
Dressing Percentage ◽  
Beef Marbling ◽  
Growth Ability ◽  
Carcass Cuts

The aim of this study was to evaluate growth ability (weight, daily weight gains) and selected carcass characteristics during fattening period of Wagyu × Aberdeen Angus crossbred steers (F1). A total of 72 animals were evaluated over a period of 4 years. The observed animals were monitored from rearing (8 months) to slaughter (30 months). Statistical evaluation was performed by SAS 9.3 (GLM procedure); variables were corrected for effects of the year, season of birth and sire effect. Sire effect proved to be the most significant in our evaluation. Offsprings sired by Bull 1 had significantly (P < 0.05) better growth ability than offsprings of other two tested bulls. Slaughter analysis of tested steers showed, that mean value of dressing percentage was 55.61 %. Significantly highest dressing percentage was found for Bull 1 offsprings (56.72 %, P < 0.05). The average carcass weight of tested steers was 443.46 kg and the highest carcass weight was again achieved by offsprings of Bull 1 (486.39 kg; P < 0.05). Average value of beef marbling score was 5.21. Slaughter analyses of carcass cuts (cut‑out, round, chuck, rump, tenderloin, shank, flank) and tallow showed that average weight of these lean cuts was 127.32 kg and tallow content was 39.31 kg at average. The highest values of these parameters were observed in offspring of bulls Bull 1 (P < 0.05).

SEX AND YEAR EFFECTS ON CARCASS CHARACTERISTICS OF THREE-WAY CROSS BEEF CATTLE REARED AT TWO LOCATIONS

1983 ◽  
Vol 63 (2) ◽  
pp. 285-298 ◽  
Author(s):  
G. W. RAHNEFELD ◽  
H. T. FREDEEN ◽  
G. M. WEISS ◽  
J. A. NEWMAN ◽  
J. E. LAWSON
Keyword(s):  
Sex Differences ◽  
Beef Cattle ◽  
Key Words ◽  
Carcass Characteristics ◽  
Unit Weight ◽  
Sex Effects ◽  
Kidney Fat ◽  
Slaughter Age ◽  
Location Interaction ◽  
Good Agreement

From 1973 to 1978, 3673 steers and heifers sired by Charolais (C), Simmental (S), Limousin (L) or Chianina (Chi) were born to first-cross dams under farm (Brandon, Man.) and range (Manyberries, Alta.) conditions. Dam crosses included the Hereford × Angus (HA) and crosses sired by C, S or L sires and out of H, A or Shorthorn (N) dams. All calves entered the feedlot at approximately 206 days of age. Brandon calves, fed at that location were brought to full feed (100% grain concentrate) by 220 days of age. Manyberries calves, fed at Lacombe, received a ration of cereal silage and grain concentrate with the silage component reducing from 70% to 30% over a period of 5 mo. The minimum slaughter age was 13.5 mo at both locations but age alone (13.5 and 15 mo) was the slaughter criterion at Brandon whereas Lacombe employed the dual criteria of liveweight and degree of finish. These location differences in feeding and slaughter criteria resulted in greater slaughter weights (278 vs. 265 kg), greater rib fat (1.61 and 1.09 cm) and a higher percentage of kidney fat (2.09 vs. 1.75%) for the Brandon animals. They were also reflected in the sex differences for age at slaughter (sexes equal at Brandon; heifers > steers at Lacombe) and degree of finish (sexes equal in rib fat at Lacombe; steers > heifers at Brandon). Heifers at Brandon had a larger percentage of hide (P < 0.0001) and lower dressing percentage (P < 0.0001) than steers. Percentage of head, front feet and hind feet were also less for heifers than steers at this location. Rib eye was greater for steers but heifers had greater rib eye area per unit weight (P < 0.0001) and a higher percentage of kidney fat (P < 0.0001). The sex ranking for percentage chuck, shank and flank was steers > heifers (P < 0.0001) and the reverse for percentages of rib, long loin and the combined cuts of rib, round and long loin (P < 0.0001). For percentages of lean in the long loin, rib and chuck the ranking was steers > heifers (P < 0.0001) with heifers > steers for percentage lean of round (P < 0.0001). Heifers relative to steers had significantly (P = 0.0001) lower percentages of bone in the round, rib and chuck and greater (P = 0.0001) lean to bone ratios for the combined trait of long loin and round. The sex differences observed at Lacombe for these traits were in good agreement with Brandon although sex by location interaction was not tested. Year differences were large but year-by-sex interactions were non-existent for virtually all carcass traits evaluated at both locations (P ≤ 0.05). Sire-by-sex and dam-by-sex interactions were also absent. Key words: Beef cattle, crossbreeding, carcass characteristics, year effects, sex effects

Prediction of lean content in the carcasses of beef cattle. II. From measurements of specific cuts

1992 ◽  
Vol 72 (3) ◽  
pp. 517-524 ◽  
Author(s):  
L. O. Fan ◽  
J. W. Wilton ◽  
W. R. Usborne ◽  
I. McMillan
Keyword(s):  
Beef Cattle ◽  
Key Words ◽  
Stepwise Regression ◽  
Important Predictor ◽  
Carcass Weight ◽  
Backfat Thickness ◽  
Prediction Equations ◽  
Beef Carcasses ◽  
Lean Weight ◽  
Carcass Cuts

Carcass data on 304 steers and 320 heifers from seven breed of dam groups were analyzed to test equations for predicting weight and proportion of lean content in beef carcasses from measurements of specific cuts. All dams were bred to Angus sires for first calving and to a Simmental sire for second and third calvings. Cattle by Angus sires were slaughtered at 10-mm backfat thickness evaluated ultrasonically; those by the Simmental sires at 7 mm. One side of each carcass was cut into eight cuts and separated into fat, lean and bone. Data were analyzed by multiple stepwise regression procedures. Prediction equations from each cut were obtained from the overall data and subpopulations by breed of sire, by sex and by breed of dam group. Cold-carcass weight accounted for the highest proportion of variation of lean weight in the side of the carcass, but it accounted for no more than 3% of the variation of proportion lean. Lean weight in hip and chuck, particularly in hip, was a most important predictor for estimating lean weight of the side. Total weights of each cut were also important predictors. Proportion lean in each cut alone was the strongest predictor of proportion lean in the carcass. Proportions of weights of cut in the carcass were also important predictors. Predictions of lean content (weight and proportion) in the carcass from dissected cuts of chuck and hip provided the most precise estimates. Average biases for breed of sire–degree of finish combinations, sex or breed of dam group were relatively small when an overall equation based on information from the hip was used. Key words: Beef, prediction of lean content, carcass, cuts, breed, sex

Growth and carcass characteristics of ram, cryptorchid and wether Border Leicester x Merino lambs: effects of increasing carcass weight.

1986 ◽  
Vol 26 (2) ◽  
pp. 153 ◽  
Author(s):  
GJ Lee
Keyword(s):  
Growth Rate ◽  
Carcass Characteristics ◽  
The Other ◽  
Carcass Weight ◽  
Consumer Acceptability ◽  
Cross Border ◽  
Ad Libitum ◽  
Dressing Percentage ◽  
Fat Score ◽  
Score Distributions

The growth and carcass characteristics of first-cross Border Leicester x Merino ram, cryptorchid and wether lambs were compared over a range of slaughter weights (35-55 kg). Lambs were offered feed ad libitum after weaning. The growth rate of wether lambs (221 g/day) was less (P< 0.01) than that of rams and cryptorchids (308 and 280 g/day respectively, P = 0.076). The dressed carcasses of the wether lambs were approximately 2 percentage units heavier than those of the ram and cryptorchids, but this difference was partly due to the weight of the testes. Across all sex groups, dressing percentage increased by 0.46 percentage units per kg increase in carcass weight. The carcasses of rams and cryptorchid lambs tended to be leaner than those of wethers. Fat score distributions, based on export standards, were such that wethers scored higher (fatter) than rams and cryptorchids (P< 0.05). There was a significant sexx carcass weight interaction with GR tissue depths. Above 17 kg carcass weight, tissue depth of wether lambs was greater than those of the other sex types. Of 12 families assessing consumer acceptability (taste, smell, size, fatness and tenderness) of leg roasts, the majority showed no preference for any of the sexes.

Effects of sex and year on growth and live assessment of carcass characteristics of lambs grazing annual pastures

1991 ◽  
Vol 31 (3) ◽  
pp. 307 ◽  
Author(s):  
LP Thatcher ◽  
B Warren ◽  
PJ Nicholls
Keyword(s):  
Growth Rate ◽  
Repeated Measures ◽  
Subcutaneous Fat ◽  
Carcass Characteristics ◽  
Carcass Weight ◽  
Condition Score ◽  
Second Year ◽  
Dressing Percentage ◽  
Fat Score ◽  
Clover Content

Lambs from the Poll Dorset x (Border Leicester x Merino) cross were raised from a late lambing in 1983 (a year when pastures grew unchecked and had high clover content) and 1984 (a year with intermittent dry periods and a low clover content in pastures). Multivariate repeated measures analyses were used to compare growth rates for rams, wethers and ewes within 2 periods of growth in 1983, and 4 in 1984. In all stages rams grew significantly faster than wethers and ewes, whereas wether growth rate exceeded that of ewes in only 3 stages. In general, when pasture availability and quality was high, rams grew faster than wethers by 0.3 kg/week and ewes by 0.5 kg/week. The rams grew 0.16 kg/week faster when pasture availability was limiting for a period in winter but lost significant (P<0.01) body condition, whilst ewes maintained both weight and condition. When good quality feed was again available, rams gained more weight than wethers, as did wethers compared with ewes, while rams and wethers gained more condition than ewes. Carcass weight and fatness, measured either as indicators of fat (GR measurement or fat score) or as total subcutaneous fat, could be predicted from assessments made on live lambs. Full liveweight, sex and year explained 41% of variation in GR, 48% in fat score and 79% in subcutaneous fat. Condition score, sex and year explained 45% of variation in GR, 52% in fat score and 57% in subcutaneous fat. Full liveweight, condition score, sex and year explained 80% of the variation in subcutaneous fat, 47% in GR and 57% in fat score. An interaction of sex with full liveweight in predicting carcass weight and subcutaneous fat indicated that as carcass size increased, the sex of the lamb became an increasingly important consideration when assessing characteristics important in describing lamb carcasses. Dressing percentage decreased by 0.08/kg as liveweight increased. This result was consistent over the 2 years, with opportunities for error being assessed and eliminated in the second year. Notwithstanding that this was an unimportant loss in real terms, published information showed an increase in dressing percentage with liveweight.

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