Genetic Parameters of Linear Type Traits Scored at 30 Months in Italian Heavy Draught Horse

The Italian Heavy Draught Horse (IHDH) breed is selected based on linear type traits (LTT) evaluated at young age on six-month-old foals. However, animals retained for reproduction are scored also at adults age (about 30 months), and the evaluation is mandatory for the final official admission to th...

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Main Authors: Fabio Folla, Cristina Sartori, Enrico Mancin, Giuseppe Pigozzi, Roberto Mantovani
Format: Article
Language:English
Published: MDPI AG 2020-06-01
Series:Animals
Subjects:
Online Access:https://www.mdpi.com/2076-2615/10/6/1099
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spelling doaj-bdc0b576040c4e70aa87fff97913918e2020-11-25T03:14:19ZengMDPI AGAnimals2076-26152020-06-01101099109910.3390/ani10061099Genetic Parameters of Linear Type Traits Scored at 30 Months in Italian Heavy Draught HorseFabio Folla0Cristina Sartori1Enrico Mancin2Giuseppe Pigozzi3Roberto Mantovani4Department of Agronomy, Food, Natural Resources, Animals and Environment—DAFNAE, University of Padova, Viale dell’Università 16, 35020 Legnaro (PD), ItalyDepartment of Agronomy, Food, Natural Resources, Animals and Environment—DAFNAE, University of Padova, Viale dell’Università 16, 35020 Legnaro (PD), ItalyDepartment of Agronomy, Food, Natural Resources, Animals and Environment—DAFNAE, University of Padova, Viale dell’Università 16, 35020 Legnaro (PD), ItalyItalian Heavy Draught Horse Breeders Association (ANACAITPR), 37068 Vigasio (VR), ItalyDepartment of Agronomy, Food, Natural Resources, Animals and Environment—DAFNAE, University of Padova, Viale dell’Università 16, 35020 Legnaro (PD), ItalyThe Italian Heavy Draught Horse (IHDH) breed is selected based on linear type traits (LTT) evaluated at young age on six-month-old foals. However, animals retained for reproduction are scored also at adults age (about 30 months), and the evaluation is mandatory for the final official admission to the stud book of candidate mares and stallions. This study aimed to estimate genetic parameters of LTT scored at 30 months to consider if they are feasible for selection instead of using foal data and to reduce costs of selection plan. Data included 19 years of evaluation for 14 LTT and an overall score. Analyses were performed on 5835 females and 856 males via animal model. The heritability ranged from 0.03 (upper line length) to 0.40 (frame size). Traits of selection interest (head size and expression; temperament/movement; fleshiness; fore diameter; rear diameter) reported heritability between 0.21 and 0.31. High genetic correlations were obtained among traits related to muscular development, 0.73 on average. Positive genetic trends were found in traits of selection interest, already selected from foal type trait data. Accounting for genetic parameters estimated in adult animals instead in foals is feasible in IHDH selection.https://www.mdpi.com/2076-2615/10/6/1099horselinear type traitsgenetic evaluationselectionItalian Heavy Draught Horse
collection DOAJ
language English
format Article
sources DOAJ
author Fabio Folla
Cristina Sartori
Enrico Mancin
Giuseppe Pigozzi
Roberto Mantovani
spellingShingle Fabio Folla
Cristina Sartori
Enrico Mancin
Giuseppe Pigozzi
Roberto Mantovani
Genetic Parameters of Linear Type Traits Scored at 30 Months in Italian Heavy Draught Horse
Animals
horse
linear type traits
genetic evaluation
selection
Italian Heavy Draught Horse
author_facet Fabio Folla
Cristina Sartori
Enrico Mancin
Giuseppe Pigozzi
Roberto Mantovani
author_sort Fabio Folla
title Genetic Parameters of Linear Type Traits Scored at 30 Months in Italian Heavy Draught Horse
title_short Genetic Parameters of Linear Type Traits Scored at 30 Months in Italian Heavy Draught Horse
title_full Genetic Parameters of Linear Type Traits Scored at 30 Months in Italian Heavy Draught Horse
title_fullStr Genetic Parameters of Linear Type Traits Scored at 30 Months in Italian Heavy Draught Horse
title_full_unstemmed Genetic Parameters of Linear Type Traits Scored at 30 Months in Italian Heavy Draught Horse
title_sort genetic parameters of linear type traits scored at 30 months in italian heavy draught horse
publisher MDPI AG
series Animals
issn 2076-2615
publishDate 2020-06-01
description The Italian Heavy Draught Horse (IHDH) breed is selected based on linear type traits (LTT) evaluated at young age on six-month-old foals. However, animals retained for reproduction are scored also at adults age (about 30 months), and the evaluation is mandatory for the final official admission to the stud book of candidate mares and stallions. This study aimed to estimate genetic parameters of LTT scored at 30 months to consider if they are feasible for selection instead of using foal data and to reduce costs of selection plan. Data included 19 years of evaluation for 14 LTT and an overall score. Analyses were performed on 5835 females and 856 males via animal model. The heritability ranged from 0.03 (upper line length) to 0.40 (frame size). Traits of selection interest (head size and expression; temperament/movement; fleshiness; fore diameter; rear diameter) reported heritability between 0.21 and 0.31. High genetic correlations were obtained among traits related to muscular development, 0.73 on average. Positive genetic trends were found in traits of selection interest, already selected from foal type trait data. Accounting for genetic parameters estimated in adult animals instead in foals is feasible in IHDH selection.
topic horse
linear type traits
genetic evaluation
selection
Italian Heavy Draught Horse
url https://www.mdpi.com/2076-2615/10/6/1099
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