title: Relationships among bovine male and female reproductive traits.
abstract: No significant relationship (p greater than 0.05) was found between age at puberty in heifers and the age and scrotal circumference at puberty in related bulls. There was a significant effect (p less than 0.01) of genotype and sire on age at puberty of heifers and a significant effect (p less than 0.05) of genotype on weight at puberty in heifers. There was a significant effect of genotype on age (p less than 0.01) and weight (p less than 0.05) at puberty of bulls. A significant difference (p less than 0.05) in age at puberty of bulls was found between the 2 methods of assessing puberty. It is possible that the assessment of puberty of heifers at 2-month intervals may not have been precise enough to detect such a relationship and/or that the variation in genotypes and ages in this study were too great to establish such a relationship.
authors.affiliation: Department of Farm Animal Medicine and Production, University of Queensland, Goondiwindi.
authors.forename: V
authors.initials: V
authors.lastname: Perry
authors.forename: R K
authors.initials: RK
authors.lastname: Munro
authors.forename: P J
authors.initials: PJ
authors.lastname: Chenoweth
authors.forename: D
authors.initials: D
authors.lastname: Bodero
authors.forename: T B
authors.initials: TB
authors.lastname: Post
mesh_terms: D000367:Age Factors; D000704:Analysis of Variance; D000818:Animals; D001835:Body Weight; D002417:Cattle / Q000235:genetics / Q000502:physiology*; D005260:Female; D005838:Genotype; D008297:Male; D012611:Scrotum / Q000033:anatomy & histology; D012737:Sex Factors; D012741:Sexual Maturation