Back to Search
Start Over
Morphofunctional diversity of equine of varied genetic compositions raised in the Pantanal biome of Brazil
- Source :
- Tropical Animal Health and Production. 50:1033-1040
- Publication Year :
- 2018
- Publisher :
- Springer Science and Business Media LLC, 2018.
-
Abstract
- Evaluating phenotypic diversity makes it possible to identify discrepancies in aptitudes among animals of different genetic bases, which is an indicator of adaptive or selective differences between populations. The objective of this work was to evaluate the morphofunctional diversity of 452 male and female adult equines (Arabian, Quarter Mile, Pantaneiro, and Criollo breeds, and undefined crossbreeds of horses and mules) raised in the Pantanal biome (Brazil). Linear measurements were performed to estimate conformation indexes. Initially, a discriminant analysis was performed, regardless of the animal's size, followed by factor analysis. The factors were characterized and used as new variables. The diversity among equines and their relationship with the factors were evaluated using multivariate analysis. The factors were classified according to their decreasing importance: balance, rusticity, and robustness for the measurement factors; and load, ability, conformation, and equilibrium for the index factors. The genetic groups of equines have well-defined morphofunctional characteristics. The main differences are based on the rusticity and ability typologies in relation to those based on performance. Equines introduced to the Pantanal biome presented a more robust and compact body with good conformation. As a result, these horses may have superior athletic performance during equestrian activities when compared to the Pantaneiro local breed. However, this biotype may represent less rusticity (less adaptive capacity). Therefore, the regional breed can be equal or better in equestrian activities than breeds introduced to the Pantanal biome. Thus, breeders may cross horses from local breeds as an alternative to those introduced. Undefined crossbred male equines presented a different profile from the Pantaneiro breed, which may indicate little use of crossbreeds in breeding.
- Subjects :
- Male
Multivariate analysis
Biome
Zoology
Breeding
Crossbreed
Food Animals
Genetic variation
Animals
Horses
Ecosystem
Analysis of Variance
biology
0402 animal and dairy science
Discriminant Analysis
Genetic Variation
04 agricultural and veterinary sciences
biology.organism_classification
040201 dairy & animal science
Equus
Breed
Genetics, Population
Multivariate Analysis
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Criollo tobacco
Female
Animal Science and Zoology
Brazil
Software
Subjects
Details
- ISSN :
- 15737438 and 00494747
- Volume :
- 50
- Database :
- OpenAIRE
- Journal :
- Tropical Animal Health and Production
- Accession number :
- edsair.doi.dedup.....7b0ffe4dd55514ff74f81f39044fb352