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Comparing the genotype and phenotype of different beef quality traits and influences and the genetic reliability between different breeds of Bos Taurus cattle [electronic resource] / Niamh Sullivan

By: Sullivan, Niamh [author].
Material type: Computer fileComputer filePublisher: Galway : Galway-Mayo Institute of Technology, 2019Description: 1 online resource (36 pages) : figures, tables.Content type: text Media type: computer Carrier type: online resourceSubject(s): Galway-Mayo Institute of Technology (2019) -- Dissertations | Beef industry -- Ireland | Cattle -- Genetics | Beef cattle -- IrelandOnline resources: eThesis - click to view Dissertation note: BSc (Hons) in Agriculture and Environmental Management. Galway-Mayo Institute of Technology, 2019 Summary: Genetically testing animals for traits is getting more common and important for agriculture to predict the animal’s performance to be able to identify a more profitable animal. We hypothesise that there will be similarities between the genotype and the phenotype between (Bos Taurus) traits, breeds such as Hereford (HEX) and Angus (AAX) will have better meat-eating quality traits than the Charolais (CHX) and Limousin (LMX). 20 crossbred heifers of suckler type were used, five HEX, five AAX, five CHX and five LMX. Trial was a 90-day feeding trial given the same amount of concentrates and given silage ad lib. They were gnomically tested, and tests done on certain traits. Profit made on the animal was also assessed. No significant difference was observed between the genotype and the phenotype for docility (F (1, 4) = 6.411, p = 0.065), tenderness (F (1, 4) = 0.580, p = 0.147) and profit (F (3, 12) = 0.327, p = 0.806), but there was a significance in carcase weight (F (1, 4) = 10.64, p = 0.031), ADG (F (1, 4) = 8.132, p = 0.046), marbling(F (1, 4) = 18.778, p = 0.012), rib-eye area (F (1, 4) = 10.712, p = 0.031) and fat thickness (F (1, 4) = 21.122, p = 0.10). There was no significance between breeds at for any trait. Therefore, it can be concluded that there is no guarantee that the genetically testing will be fully correct, there is no significant differences among the breeds or profit.
List(s) this item appears in: Theses: Agriculture and Environmental Management
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Thesis Thesis GMIT Galway
Theses
eThesis (Browse shelf) Available eThesis - click link above to access eth265181

BSc (Hons) in Agriculture and Environmental Management. Galway-Mayo Institute of Technology, 2019

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Genetically testing animals for traits is getting more common and important for agriculture to predict the animal’s performance to be able to identify a more profitable animal. We hypothesise that there will be similarities between the genotype and the phenotype between (Bos Taurus) traits, breeds such as Hereford (HEX) and Angus (AAX) will have better meat-eating quality traits than the Charolais (CHX) and Limousin (LMX). 20 crossbred heifers of suckler type were used, five HEX, five AAX, five CHX and five LMX. Trial was a 90-day feeding trial given the same amount of concentrates and given silage ad lib. They were gnomically tested, and tests done on certain traits. Profit made on the animal was also assessed. No significant difference was observed between the genotype and the phenotype for docility (F (1, 4) = 6.411, p = 0.065), tenderness (F (1, 4) = 0.580, p = 0.147) and profit (F (3, 12) = 0.327, p = 0.806), but there was a significance in carcase weight (F (1, 4) = 10.64, p = 0.031), ADG (F (1, 4) = 8.132, p = 0.046), marbling(F (1, 4) = 18.778, p = 0.012), rib-eye area (F (1, 4) = 10.712, p = 0.031) and fat thickness (F (1, 4) = 21.122, p = 0.10). There was no significance between breeds at for any trait. Therefore, it can be concluded that there is no guarantee that the genetically testing will be fully correct, there is no significant differences among the breeds or profit.

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