Simmentaler cross (SX), Bonsmara cross (BX) and Nguni (NG) steers were raised on natural sweet veld pastures and slaughtered at 18 or 30 months of age. Slaughtering occurred at the end of the wet summer season. Live weight and carcass traits were significantly influenced by breed and slaughter age. The amount as well as percentage kidney and omental fat differed significantly between the respec...

Cannon et al. (1995) describe pork “quality” as being associated with such characteristics as freshness, wholesomeness, grade, color (appearance), eating satisfaction and processing attributes (functionality). Grandin (1994) reported that ultimate pork quality is the responsibility given 50% to the producer and 50% to the packer. The producer is responsible for selection of swine genotypes that...

Twenty-four Swiss Large White barrows from six litters (four pigs per litter) had either ad libitum (A) or restrictive (R) access to a grower and finisher diet from 20 to 60 and from 60 to 100 kg BW, respectively. Two littermates from both feeding regime were slaughtered at 61 (A60 and R60) or 101 kg BW (A100 and R100). The histochemical properties of myofibers as well as meat quality traits of...

The effect of implants containing anabolic steroid (Synovex) on testis function, feedlot performance, and carcass traits was evaluated in bulls, steers, and bulls actively immunized against gonadotropin-releasing hormone (GnRH). Ninety-one Hereford or Hereford x Red Angus bull calves were randomly assigned to a 3 x 2 factorial experiment. The treatments were: 1) unimmunized control (n = 30), 2)...

This study was aimed at determining the relationship between live body weight and carcass traits in Arbor Acre broiler chicken. Fifty day-old broiler chicks were purchased and raised on deep litter system until 56 days of age. At maturity, ten birds were randomly selected for carcass evaluation. The analyzed data showed that live weight has statistically significant (P<0.01) positive phenotypic...

This study investigated the association between both polymorphisms and metabolic marker changes of leptin gene, body weight, weight gain, carcass traits, feed intake, conversion ratio. Blood samples were collected from 60 V-line Baladi Black rabbits for DNA extraction biochemical analysis. sequencing (202-bp) revealed four non-synonymous single nucleotide polymorphism (SNPs) that characterized ...

Broiler meat quality is one of the primary factors considered by the poultry industry. This study was conducted to estimate heritability and genetic correlation coefficients for meat quality traits in a single male broiler line. The meat ultimate pH (24 h after slaughter) and lightness presented the highest heritability estimates. Given the estimated genetic correlations, the pH measured at 15 ...

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...

Our objectives were to estimate genetic parameters for carcass traits and evaluate the influence of slaughter end point on estimated breeding values (BV). Data provided by the American Simmental Association were divided into three sets: 1) 9,604 records of hot carcass weight (CW) and percentage retail cuts (PRC), 2) 6,429 records of CW, PRC, and marbling score (MS), and 3) 1,780 records of CW, ...