The breeding data relating to Hariana herd spread over 18 years (1979-96) were analysed to estimate genetic, phenotypic and environmental changes in characters of economic importance which might have taken place during the several years of selective breeding practiced in the herd. The average genetic changes in a given character were estimated by four methods. The phenotypic trends observed for...

Shun Han Rebekah Wong is Assistant Librarian in the Multimedia Services Section and T.D. Webb is previous University Librarian, both at Hong Kong Baptist University Library; e-mail: rebekahw@hkbu. edu.hk, [email protected]. Sincere thanks go to Dr. Tong Chong Sze (previous Academic Registrar, HKBU) and Mr. Manson Yiu (Executive Officer, Academic Registry, HKBU). Without their cooperation, thi...

Weaning weight records of 27,774 Angus calves in 13 herds and 14,738 Hereford calves in 11 herds born during 1953 through 1983 in Virginia were analyzed using regression techniques and maximum likelihood (ML) procedures to estimate phenotypic and genetic trends for adjusted weaning weight (AWWT), weaning weight ratio (WWR) and deviations of AWWT from the mean AWWT of the contemporary group (DEV...

genetic parameters were estimated in a base and closed population of iranian honeybee colonies. data were obtained on 500-700 iranian native population of honey­bee colonies (honeybee breeding project in central region of iran) subject to 9 successive generation of selection. these populations had been selected for honey production, swarming behavior, and defense behavior. heritability of honey...