+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Genetic and phenotypic relationships between conformation and production traits in Ayrshire heifers



Genetic and phenotypic relationships between conformation and production traits in Ayrshire heifers



Animal Production 58(3): 335-338



First lactation records for production traits (milk, fat and protein yields) and 17 linear type traits for 7169 Ayrshire heifers were analysed to estimate genetic parameters for type traits and to examine the relationship between type and production traits. A multivariate restricted maximum likelihood procedure fitting a sire model with sire relationships included was used for all analyses. Heritabilities for production traits were approximately 0.3 and genetic correlations among them were high ( gt 0.84). The estimates of heritabilities for type traits were mainly low to moderate ranging from 0.04 to 0.42. Angularity (0.80), beef shape (0.49), foot angle (0.53) and stature (0.46) had higher heritabilities. Generally phenotypic correlations among type traits were lower than the genetic correlations. The highest negative genetic correlation was between rear legs side and rear legs rear (-0.95) and the highest positive correlation between chest width and beef shape (0.93). Genetic correlations between type and production were low to moderate and were similar for milk, fat and protein yields. The genetic correlations between the production traits and chest width, udder depth and beef shape were negative but were positive between production and angularity, rear udder width and teat placement side.

(PDF emailed within 0-6 h: $19.90)

Accession: 002390387

Download citation: RISBibTeXText

DOI: 10.1017/S0003356100007261


Related references

Phenotypic and genetic analyses of body conformation traits in German Black Pied Dairy heifers. Archiv fur Tierzucht 32(3): 203-213, 1989

Phenotypic and genetic relationships of residual feed intake with performance and ultrasound carcass traits in Brangus heifers. Journal of Animal Science 87(12): 3887-3896, 2010

Genetic and phenotypic parameters for production and reproduction traits in holstein heifers and cows. Canadian Journal of Animal Science 67(2): 596-597, 1987

Genetic and phenotypic relationships among endocrine and traditional fertility traits and production traits in Holstein-Friesian dairy cows. Journal of Dairy Science 85(4): 958-967, 2002

Genetic relationships between feed intake efficiency and production traits in growing bulls, growing heifers and lactating heifers. Livestock Production Science 32(3): 189-202, 1992

Phenotypic and genetic relationships between age at first calving, its component traits, and survival of heifers up to second calving. Journal of Dairy Science 101(1): 425-432, 2017

Genetic and phenotypic correlations among feed efficiency, production and selected conformation traits in dairy cows. Animal 10(03): 381-389, 2016

Genetic and phenotypic correlations among feed efficiency, production and selected conformation traits in dairy cows. Animal 10(3): 381-389, 2015

Genetic and phenotypic correlations between milk production and body conformation traits in Black-and-White cows in Poland. Prace i Materialy Zootechniczne (9): 31-41, 1975

Heritabilities of and genetic and phenotypic correlations between condition score and production and conformation traits in Black-and-White cows. Animal Science Papers and Reports 23(1): 33-41, 2005

Genetic and phenotypic relationships between McNally model parameters and egg production traits. 2007

Phenotypic and genetic relationships between milk production traits of cows and their progeny. 1972

Genetic parameters for claw health and feet and leg conformation traits in Finnish Ayrshire cows. Journal of Animal Breeding and Genetics 130(2): 89-97, 2013

Estimation of genetic parameters for conformation traits assessed on a linear scale in ayrshire cattle. Animal Production 54(3): 481, 1992

Genetic and phenotypic parameters estimates for body weight, conformation, production and reproduction traits of PD1 (Vanaraja male line) during different periods. Indian Journal of Animal Sciences 85(8): 67-72, 2015