Economic selection index development for Beefmaster cattle I: Terminal breeding objective

Ochsner, Kathleen P; MacNeil, M. D.; Lewis, Ronald M.; Spangler, Matthew L

doi:10.2527/jas2016.1231

Cited by 2 publications

(4 citation statements)

References 23 publications

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“… Brumatti et al (2011) , using a bioeconomic model with five characteristics, weighted weight at weaning and the weight at 18 months as the least relevant within the index. In the Beefmaster breed, Ochsner et al (2017) weighted the weaning weight as the most important within the index and found that W720 represented a negative economic impact for the evaluated systems. In Colombia, Amaya et al (2020) , using a bioeconomic index, found that the W240 and IBC were the most important in the Simmental production systems.…”

Section: Discussionmentioning

confidence: 99%

“…This concept is also referred to as desired gain ( Pesek and Baker, 1970 ). This methodology uses phenotypic and genetic correlations to calculate a single number that represents the added genetic value of each animal ( Ochsner et al, 2017 ), thus simplifying and optimizing selection by multiple characters (Ramirez et al, 2020). The objective of the present study was to propose selection indices with different weights to be used in the BON breed that maximize genetic progress for various productive and reproductive traits.…”

Section: Introductionmentioning

confidence: 99%

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Genetic selection indices for growth traits in Blanco-Orejinegro cattle

Toro

Mourão

Sarmiento

et al. 2021

Translational Animal Science

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Selection indices are used in genetic improvement programs, with the purpose of selectins simultaneous for several economically important traits. The objective of this study was to construct equations for selection indices in the Blanco-Orejinegro (BON) breed and to determine the index that would generate the greatest genetic progress. The information used included birth weight (BW), body weights adjusted to 120, 240, 480, and 720 days old (W120, W240, W240, 480 and W720, respectively), age at first calving (AFC) and interval between first and second calving (IBC) estimated breeding values. Two Smith and Hazel indices were calculated using variances (I1) and literature (I2), with a part two indices designed using information from experts and breeders (I3 and I4). Las características de mayor peso fueron para a*=W120, a**, a****=W720 y a***=W240 respectivamente. In general, the estimated indices obtained similar reliability and expected genetic differences I1 generated a decrease in direct BW. I2 generated the largest increases in BW and AFC. I3 and I4 generated positive changes in growth and reproductive traits, with I3 generating the greatest genetic gains in the population, especially for W240.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic selection indices for growth traits in Blanco-Orejinegro cattle

Toro

Mourão

Sarmiento

et al. 2021

Translational Animal Science

View full text Add to dashboard Cite

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“…According to Ochsner et al . (), the prioritization must be based on their economic relative importance. In this regard, there are two approaches to deriving economic values:…”

Section: Definition Of Breeding Objectivementioning

confidence: 99%

“…A common problem in programmes including multi-trait selection has been the prioritization of the traits to be improved. According to Ochsner et al (2017), the prioritization must be based on their economic relative importance. In this regard, there are two approaches to deriving economic values:…”

Section: Definition Of Breeding Objectivementioning

confidence: 99%

Advances in genetic improvement for salmon and trout aquaculture: the Chilean situation and prospects

Lhorente

Araneda

Neira

et al. 2019

Reviews in Aquaculture

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Genetic improvement is key to the development of a more efficient aquaculture industry. By 2010, there were 104 breeding programmes for aquaculture species in the world, most of them for fish species. Usually, the breeding goals include traits such as growth rate, disease resistance, maturation and carcass quality. Resistance to specific pathogens has been one of the main objectives of research and development in the genetic improvement programmes of salmonids in Chile and worldwide. In Chile, trait selection has been conducted through the application of selection indexes. New technologies like next generation sequencing and genotyping have helped disentangle the genetic basis and enhance genetic evaluation methods of economically important traits. This work aims to review the advances in genetic improvement for salmon and trout aquaculture with emphasis on the Chilean experience. We focus on the implementation of breeding programmes in the country, definition of breeding objectives, results on genetic parameters and response to selection and incorporation of genomics. Future challenges and opportunities regarding genotype‐by‐environment interactions, climate change and research and development, plus the demonstration of the economic benefit of breeding programmes are also addressed.

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Economic selection index development for Beefmaster cattle I: Terminal breeding objective

Cited by 2 publications

References 23 publications

Genetic selection indices for growth traits in Blanco-Orejinegro cattle

Genetic selection indices for growth traits in Blanco-Orejinegro cattle

Advances in genetic improvement for salmon and trout aquaculture: the Chilean situation and prospects

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