Article
Effects of ractopamine, genotype, and growth phase on finishing performance and carcass value in swine: II. Estimation of lean growth rate and lean feed efficiency.
Journal of animal science - 1 Jul 1991
Gu Y, Schinckel A P, Forrest J C, Kuei C H, Watkins L E
Abstract excerpt
A replicated factorial experiment using 183 individually fed crossbred barrows was conducted. The pigs were fed an 18.5% CP (.95% lysine) diet with 3.594 kcal of ME/kg. The effects of five genotypes (GT): 1) Hampshire (H) X (H X Duroc [D]), 2) synthetic terminal sire line, 3) (H X D) X (Landrace [L] X [Yorkshire (Y) X D]), 4) L X (Y X D), and 5) Y X L; two levels of ractopamine (RAC) treatment: 0 and 20 ppm; and...
Topics
- Animals
- Breeding
- Genotype
- Least-Squares Analysis
- Male
- Meat
- Muscle Development
- Muscles
- Phenethylamines
- Random Allocation
- Regression Analysis