Service cock only indirectly affects hatchability in laying hens
Journal Title: Animal Science Papers and Reports - Year 2010, Vol 28, Issue 2
Abstract
The purpose of the study was to investigate the effect of service sire on fertilization rate and loses during hatching as a way of increasing the accuracy of breeding value estimation of layers for hatchability. Layers from five generations of two breeds – Rhode Island White and Rhode Island Red – were individually recorded for fertilization rate, percentage of chicks hatched from eggs laid, set, and fertilized. Two statistical models, both fitting random animal additive genetic and permanent environment effects along with fixed joint effect of hatch-year × hatch-number, differed with regard to presence or absence of random effect of service sire. Of the traits studied fertilization rate is least influenced by service sire which can be neglected when evaluating fertilization. Although service sire effect is small, both absolutely and relatively, failing to account for it in a model evaluating number of chicks hatched may result in substantial overestimation of heritability. Service sire effect accounted for in the model can also add to the accuracy of the hens’ proofs for hatchability. Correlation between direct additive and service sire effects may be dependent on the population it is estimated in.
Authors and Affiliations
Iwona Rozempolska-Rucińska, Grzegorz Zięba, Marek Łukaszewicz
Keywords
Related Articles
- EP ID EP71428
- DOI -
- Views 137
- Downloads 0
Effect of exogenous glutathione in extender on the freezability of Nili-Ravi buffalo (Bubalus bubalis) bull spermatozoa
The study was designed to investigate the effect of exogenous glutathione supplementation (0.0, 0.5, 1.0, 2.0 and 3.0 mM) in tris-citric acid extender on post-thaw sperm motility, viability, plasma membrane and acrosomal...
Polymorphism in troponin T gene (TNNT3) and its effect on gene expression level and production traits in pigs of selected breeds
The aim of the study was to investigate the T2 fragment of TNNT3 gene, identify its polymorphism and evaluate the elation between that polymorphism and TNNT3 expression level and production traits in most common pig bre...
The genetic relationship between reproduction traits and milk urea concentration
The aim of this research was to investigate the genetic relationship between reproduction traits and milk urea concentration (MU) during the first lactation of Polish Holstein-Friesian cows. The following reproduction tr...
Genotype-environment interaction between Chile and North America and between Chilean herd environmental categories for milk yield traits in Black and White cattle
In order to evaluate the expression of sire genetic evaluations obtained in North America for Chilean Black and White Cattle, genetic correlations were estimated for milk (MY), fat (FY) and protein (PY) yields, and for f...
Expression profile of MYF5 and MYF6 genes in skeletal muscles of young growing gilts of five breeds at different ages, based on the most stable reference genes
The expression profile was evaluated of MYF5 and MYF6 genes in skeletal muscles of young growing Polish Large White (PLW), Polish Landrace (PL), Pietrain (PIE), Duroc (DUR) and Pulawska (PUL) gilts at different ages. Nor...