Livestock mature at different rates depending, in part, on their genetic merit; therefore, the optimal age at slaughter for progeny of certain sires may differ. The objective of the present study was to examine sire-level genetic profiles for carcass weight, carcass conformation, and carcass fat in cattle of multiple beef and dairy breeds, including crossbreeds. Slaughter records from 126,214 h...

We examined differences in slaughter performance and meat quality of Honghe yellow cattle different ages. randomly selected nine bulls for at 12 (12M), 36 (36M), 60 (60M) months age. There were significant antemortem live weight, carcass net weight among the three groups, all which increased with Backfat thickness 36M (4.77±0.25 mm) 60M (5.50±0.50 was significantly higher than 12M (3.00±0.00 mm...

Estimates of genetic/phenotypic covariances and economic values for slaughter weight, growth, feed intake and efficiency, and three potential methane traits were compiled to explore the effect of incorporating methane measurements in breeding objectives for cattle and meat sheep. The cost of methane emissions was assumed to be zero (scenario A), A$476/t (based on A$14/t CO equivalent and methan...

Forty male twin kids of the Majorera breed were used in a 2×2 design, in which the diet, suckled on dam (SD) or milk replacer (MR) and live weight at slaughter (6 or 10kg) were the main variables. Muscle pH and colour (CIE, L*a*b*) were determined in the longissimus (LD), semimembranosus (SM) and triceps brachii (TB) muscles, immediately after slaughter and chilling (24h). Water-holding capacit...

This study examined the histological properties of Semimembranosus and Triceps brachii muscle in two different bovine breeds, Maremmana (Ma) (an autochthonous breed from Tuscany, Italy) and Limousine (Lm). The animals were grazed in two adjoining pastures, received the same feed supplementation, and were weighed monthly. The experimental period lasted from weaning (6 months old) to slaughter (1...

The objective of this study was to quantify the effect of heat stress during the life of a pig on its final weight, as a first step toward a genetic evaluation for heat tolerance. Data included carcass weights of 23,556 crossbred pigs [Duroc x (Landrace x Large White)] raised on 2 farms in North Carolina and slaughtered from May 2005 through December 2006. Weather data were available from a nea...

The most valuable lean cuts from Iberian pigs are the hams, forelegs, and loins, which yield high quality cured meat products. This study aimed to assess the correlation between body composition measurements taken in vivo by ultrasonography in Iberian pigs and those taken on the carcass, which were then used to develop predictive models to estimate the weight and yield of these cuts. Before sla...

The article presents the data on a comparative research study of the beef production of Kalmyk steers of compact (Group I), medium (Group II) and tall (Group III) body types. It has been found that the steers of a tall body type had higher pre-slaughter weight at the age of 16 months than steers of compact and medium types by 24.7 and 12.1 kg, respectively; the weight of hot carcasses by 15.9 a...