Effect of age at feedlot entry on performance and carcass characteristics of bulls and steers

2002 ◽  
Vol 80 (9) ◽  
pp. 2247 ◽  
Author(s):  
J. P. Schoonmaker ◽  
S. C. Loerch ◽  
F. L. Fluharty ◽  
H. N. Zerby ◽  
T. B. Turner
Keyword(s):  
Carcass Characteristics ◽  
Effect Of Age

scholarly journals Effect of age at slaughter on carcass characteristics and carcass composition in lambs of mountain Greek breeds

2011 ◽  
Vol 51 (No. 7) ◽  
pp. 311-317 ◽  
Author(s):  
B. Skapetas ◽  
E. Sinapis ◽  
J. Hatziminaouglou ◽  
A. Karalazos ◽  
J. Katanos
Keyword(s):  
Subcutaneous Fat ◽  
Age Groups ◽  
Carcass Characteristics ◽  
Carcass Composition ◽  
Age Group ◽  
Negative Effects ◽  
Slaughter Age ◽  
Total Fat ◽  
Effect Of Age

Forty male lambs of the mountain Greek breed were used to evaluate the effect of age at slaughter on carcass characteristics and composition. The slaughter of lambs was carried out at the age of 30, 45, 60, 75 and 90 days. The slaughter procedure, carcass dissection and carcass composition were realized according to the standard method of CIHEAM-AGRIMED programme. The results of this work showed that the lambs of different age groups did not differ in dressing percentage significantly. The proportion of muscles showed a tendency of increase with the increasing slaughter age but the differences were not significant. The proportion of total fat in carcass increased with the increasing slaughter age from 20.84 to 23.59% for the age group of 30 and 90 days, respectively (P < 0.05). On the contrary, as the age at slaughter increased, the proportion of bones decreased (P < 0.05). Subcutaneous, intermuscular, perinephric and pelvic fats increased with the slaughter age, but only the subcutaneous fat was influenced significantly (P < 0.05). Among the different commercial cuts proportions of long leg, first 5 ribs and shoulder decreased, while those of last 8 ribs-loin and breast-flank increased (P < 0.05). The overall results suggest that the slaughter age of lambs of the mountain Greek breed should be increased from the present ~45 days to more advanced age of 75 or 90 days in order to improve the farmers’ profits without serious negative effects on the quality of carcasses or meat of lambs.    

FEEDLOT PERFORMANCE AND CARCASS COMPOSITION OF CULL COWS OF DIFFERENT AGES

1982 ◽  
Vol 62 (3) ◽  
pp. 845-854 ◽  
Author(s):  
W. C. GRAHAM ◽  
M. A. PRICE
Keyword(s):  
Compensatory Growth ◽  
Initial Level ◽  
Age Groups ◽  
Carcass Characteristics ◽  
Carcass Composition ◽  
Apparent Effect ◽  
Feedlot Performance ◽  
Cull Cows ◽  
Effect Of Age ◽  
Two Age Groups

Two experiments were conducted to study the effect of age on the feedlot performance and carcass characteristics of cull range cows. In the first experiment, 87 cull cows of three breed-types (Hereford, Beef Composite and Dairy Composite) and three age groups (young, intermediate and mature) were fed a grain diet for 0, 8 or 16 wk. Rate of gain was higher (P < 0.01) in the first than in the second 8 wk (1.80 vs. 1.13 kg−1∙head−1∙day−1). This was accompanied by an increase (P < 0.01) in feed:gain ratio (6.9 vs. 12.8). There were no significant differences among breeds or age groups in feedlot performance or carcass characteristics. Carcass weight increased with age (P < 0.01) and length (P < 0.01). When adjusted to a common carcass length, mature cows had smaller rib eye areas than the other cows. In the second experiment, 37 cull range cows of predominantly Angus breeding, and representing two age groups (young and mature) were used. Twenty-nine of these cows were fed a grain diet ad libitum for 8 wk before slaughter. Young cows gained 1.61 kg∙head−1∙day−1 compared with 1.29 kg∙head−1∙day−1 for the mature cows. The initial level of body fat had no apparent effect on subsequent feedlot performance. The 9th- 10th- 11th rib joints of the younger cows contained less bone (P < 0.01), and had higher muscle:bone ratios (P < 0.01) than those from the mature cows. Key words: Cull cows, feedlot performance, compensatory growth, carcass composition

Effect of age at feedlot entry on performance and carcass characteristics of bulls and steers1

2002 ◽  
Vol 80 (9) ◽  
pp. 2247-2254
Author(s):  
J. P. Schoonmaker ◽  
S. C. Loerch ◽  
F. L. Fluharty ◽  
H. N. Zerby ◽  
T. B. Turner
Keyword(s):  
Carcass Characteristics ◽  
Effect Of Age

The effect of age and energy level on the growth potential of Sangsary female lambs in Iran

1999 ◽  
Vol 1999 ◽  
pp. 112-112
Author(s):  
Y. Rouzbehan ◽  
A. Shabani ◽  
R. Assadi Moghadam ◽  
A. Nik-khah
Keyword(s):  
Dry Matter ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Growth Potential ◽  
Dry Matter Intake ◽  
Initial Weight ◽  
Production Potential ◽  
Metabolisable Energy ◽  
Ad Libitum ◽  
Effect Of Age

A study was undertaken to evaluate the performance of male and female of Sangsary sheep, a native Iranian breed. Rouzbehan et al. (1996) detailed the growth rate and body composition of male lamb of this breed. In this summary, the production potential and carcass characteristics of female lamb were reported.Forty four 9 month (m) old female lambs, mean initial weight 22.9 kg (±2.5) were used. The two diets, which consisted of concentrae and roughage, had a similar protein content (150 g/ CP/kg DM) and metabolisable energy of either 10.6 MJ/ kg DM (diet A) or 9.2 MJ/kg DM (diet B) were each fed ad libitum to 22 lambs. The animals were grouply penned. At the start and end of the study, the animals were weighed on two consecutive days. Throughout the study, live weight gain (LWG) and dry matter intake (DMI) were recorded weekly.

scholarly journals Effect of age of feed restriction and microelement supplementation to control ascites on production and carcass characteristics of broilers

2004 ◽  
Vol 83 (4) ◽  
pp. 526-532 ◽  
Author(s):  
M.A. Camacho ◽  
M.E. Suárez ◽  
J.G. Herrera ◽  
J.M. Cuca ◽  
C.M. García-Bojalil
Keyword(s):  
Carcass Characteristics ◽  
Feed Restriction ◽  
Effect Of Age

scholarly journals The effect of age, birth weight and milk suction time on some carcass characteristics and load distribution ratio (LDR): Eastern Anatolian red cattle example in Turkey

2021 ◽  
Vol 66 (1) ◽  
pp. 53-65
Author(s):  
Sadrettin Yüksel ◽  
Alpay Karaçuhalılar ◽  
Burcuhan Balta ◽  
Usame Şimşek ◽  
Fatma Yüksel ◽  
...  
Keyword(s):  
Birth Weight ◽  
Load Distribution ◽  
Carcass Characteristics ◽  
Quality Parameters ◽  
Age Group ◽  
Marbling Score ◽  
Carcass Characteristic ◽  
Fat Thickness ◽  
Effect Of Age ◽  
Intensive System

The aim of this research is to evaluate the current situation and create a model for some countries involved in animal production. Eastern Anatolian Red (EAR) breed that adapts to arid and barren areas has been raised in Turkey. The experimental animals comprised 31 head of EAR cows of different ages, fed on pastures and in the barn. This study determined the effects of age, birth weight and suction time on carcass characteristics of EAR cows. The animals were divided into 6 groups based on birth weight, 4 groups based on age and 6 groups based on milk suction time. They were reared under a conventional system that was based on grazing during summer and a semi-intensive system during winter. Carcass length, fat thickness over longissimus dorsi, marbling score, and LDR were significantly (P< 0.05) affected by age group. Significant (P< 0.05) differences were noted for carcass length, fat thickness over LD, and marbling score among animals with different birth weights. The milk suction time had a significant (P< 0.05) effect on all the parameters measured. In this research, the 4th age group was seen advantageous based on carcass characteristics and LDR and resembled other groups. As indicated in the study, the carcass characteristic output from the 2nd birth weight group shows that carcass length was a far more important output than other carcass portions or carcass quality parameters. Similarly, the 1st group based on milk suction time came to the forefront for some carcass characteristic, although it indicated partial similarity with other groups.

Effect of Age in Methylphenidate-Induced Taste Avoidance and Related BDNF/Trkb in the Insular Cortex

2014 ◽  
Author(s):  
Bradley Wetzell ◽  
Mirabella M. Muller ◽  
Jennifer L. Cobuzzi ◽  
Zachary E. Hurwitz ◽  
Kathleen Decicco-Skinner ◽  
...  
Keyword(s):  
Insular Cortex ◽  
Taste Avoidance ◽  
Effect Of Age
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