Prediction of Topcross Performance from Inbred Performance in Poultry ,
Year: 1967
Type: article
Abstract: INTRODUCTION TOPCROSSING is one method considered by poultry breeders as a tool to evaluate the general combining ability of inbred lines. Topcrossing is defined here as the mating of males of an inbred line to females from a non-inbred tester line. This method has been studied in corn breeding (Jenkins and Brunson, 1932). Differences between the sire inbred lines in topcross combination provide information on general combining ability variation (Nordskog et al., 1959). Glazener and Blow (1951) found significant differences among inbred lines and tester lines in topcross combination for ten-week body weight and rate of feathering, but not for hatchability and juvenile mortality. The inbred line X tester interaction was significant for ten-week body weight and hatchability but not for mortality and rate of feathering. The tester females utilized were commercial strains. The data of Wyatt (1953) showed no significant differences between the inbred lines studied in topcrosses for …
Source: Poultry Science
DOI: 10.3382/ps.0460195
Authors: E.J. Eisen, B.B. Bohren, H.E. McKean, S.C. King
Language: English
Subfield: Genetics
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
Estimated APC paid: $2,600
OpenAlex ID: W2325299138