000135971 001__ 135971
000135971 005__ 20240704095849.0
000135971 0247_ $$2doi$$a10.1016/j.animal.2024.101206
000135971 0248_ $$2sideral$$a138967
000135971 037__ $$aART-2024-138967
000135971 041__ $$aeng
000135971 100__ $$aRuzzon, A.
000135971 245__ $$aMaternal genetic effects throughout the life of the dam in Pirenaica beef cattle. a random regression model approach
000135971 260__ $$c2024
000135971 5060_ $$aAccess copy available to the general public$$fUnrestricted
000135971 5203_ $$aIn beef cattle, dams play a crucial role in shaping the pre- and postnatal environment for the growth of their offspring. Acknowledging the substantial impact of maternal influence on the early development of calves, researchers utilize maternal animal models. These models take into account both maternal genetic and permanent environmental effects, operating under the assumption that these influences remain constant throughout the productive life of the cow. Nevertheless, it cannot be ruled out that these genetic and environmental effects may evolve throughout the lifespan of the cows. Therefore, this study aims to describe the changes in genetic and environmental maternal effects over the productive lifespan of cows. To accomplish this goal, we utilized random regression models, incorporating the age of the dam effect, maternal genetic effects, and environmental permanent effects using Legendre orthogonal polynomials. Additionally, the analytical model incorporated a covariate to adjust for the calf’s age at recording, a two-level sex effect, a random herd-year-season effect, and an additive direct genetic effect associated linked to the calf. The dataset comprised information from dams aged between 2 and 16 years, resulting in a final database that comprised weight records of 58 332 calves from 21 673 dams. The average weight at 90 days was 135.0 ± 39.3 kg, and the mean age of the dam at calving was 7.03 ± 3.41 years. We evaluated models incorporating 2, 3, 4, 5, and 6 orthogonal polynomials alongside the standard maternal animal model. Afterward, we selected the model with five orthogonal polynomials based on the Akaike Information Criteria. The Restricted Maximum Likelihood estimates within this model indicated a direct heritability of around 0.50, and a maternal heritability ranging between 0.15 and 0.25, exhibiting a consistent increase between 4, 5 to 13 years. The genetic correlation estimates between direct and maternal genetic effects remained stable at approximately −0.55 across the lifespan of the cows. Furthermore, maternal genetic correlations between different ages of the dam decreased to around 0.7 for more distant age points. The maternal permanent correlations were notably lower, occasionally even reaching negative values, suggesting variability in environmental influence on maternal effects over the productive lifespan of the cow. Finally, the model enables the prediction of breeding values for the maternal genetic effects of the cow across its lifespan, providing opportunities for innovative selection strategies on the maternal side.
000135971 536__ $$9info:eu-repo/grantAgreement/EC/H2020/801586/EU/International Doctoral Programme for Talent Attraction to the Campus of International Excellence of the Ebro Valley/IberusTalent$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 801586-IberusTalent$$9info:eu-repo/grantAgreement/EUR/INTERREG VI-POCTEFA/EFA077-01-PASTORCLIM
000135971 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000135971 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000135971 700__ $$aLópez-Carbonell, D.$$uUniversidad de Zaragoza
000135971 700__ $$aHervás-Rivero, C.$$uUniversidad de Zaragoza
000135971 700__ $$aSrihi, H.
000135971 700__ $$aMantovani, R.
000135971 700__ $$0(orcid)0000-0002-3042-2250$$aAltarriba, J.$$uUniversidad de Zaragoza
000135971 700__ $$0(orcid)0000-0001-6256-5478$$aVarona, L.$$uUniversidad de Zaragoza
000135971 7102_ $$11001$$2420$$aUniversidad de Zaragoza$$bDpto. Anatom.,Embri.Genét.Ani.$$cÁrea Genética
000135971 773__ $$g18, 7 (2024), 101206 [11 pp.]$$pAnimal$$tANIMAL$$x1751-7311
000135971 8564_ $$s2079281$$uhttps://zaguan.unizar.es/record/135971/files/texto_completo.pdf$$yVersión publicada
000135971 8564_ $$s2672052$$uhttps://zaguan.unizar.es/record/135971/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000135971 909CO $$ooai:zaguan.unizar.es:135971$$particulos$$pdriver
000135971 951__ $$a2024-07-04-07:59:20
000135971 980__ $$aARTICLE