Derivation of economic values for important production traits in Atlantic salmon

Atlantic salmon breeding programs selected several traits simultaneously. Lack of economic values may lead to inappropriate relative weighting of the traits selected for and with a suboptimal long-term genetic gain of the traits. Derivation of reliable economic values for important traits in Atlanti...

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Bibliographic Details
Main Author: Wu, Liyasu
Other Authors: Gjerde, Bjarne, Lillehammer, Marie
Format: Master Thesis
Language:English
Published: Norwegian University of Life Sciences, Ås 2020
Subjects:
Online Access:https://hdl.handle.net/11250/2726654
id ftunivmob:oai:nmbu.brage.unit.no:11250/2726654
record_format openpolar
institution Open Polar
collection Open archive Norwegian University of Life Sciences: Brage NMBU
op_collection_id ftunivmob
language English
topic Atlantic salmon
economic value
selection program
economic response
spellingShingle Atlantic salmon
economic value
selection program
economic response
Wu, Liyasu
Derivation of economic values for important production traits in Atlantic salmon
topic_facet Atlantic salmon
economic value
selection program
economic response
description Atlantic salmon breeding programs selected several traits simultaneously. Lack of economic values may lead to inappropriate relative weighting of the traits selected for and with a suboptimal long-term genetic gain of the traits. Derivation of reliable economic values for important traits in Atlantic salmon is therefore necessary to optimize the economic benefits of the breeding program. The objective of the thesis was to firstly to derive economic values for six important production traits of Atlantic salmon in the grow-out phase in seawater, and secondly to predict the genetic gain for each trait, and thirdly to calculate the relative contribution of each trait to the overall economic genetic gain. The studied traits were harvest body weight (HBW), feed conversion ratio (FCR), early sexual maturity (ESM), general mortality (GM), specific mortality (SP) and fillet yield (FY). Harvest body weight was modeled through the growth factor. The economic values for the traits were expressed as NOK/trait unit/kg round body weight produced. HBW was the most important trait with an economic value of 1.95 NOK/kg; followed by the correlated trait FCR with -11.8 NOK/kg feed, FY with 0.82 NOK/%-unit; GM with -0.26 NOK/%-unit; SM with -0.37 NOK/%-unit, and ESM with -0.22 NOK/%-unit. The magnitude of their contribution to the overall economic genetic gain was 48 % (HBW), 47 % (FCR), 5.3 % (FY), 0.9 % (GM), 0.1 % (SM) and -1.6 % (ESM). Given that records of feed intake could be obtained, the contribution of FCR to the overall genetic gain increased by 11 %- units while that of HBW decreased by 10 %-units. The overall economic genetic gain per generation was estimated to NOK 2.20 and NOK 2.45 per kg fish produced without and with feed intake records, respectively. This is the first reported study on the derivation of economic value for traits in Atlantic salmon. The predicted genetic gains for the studied traits and their relative contribution to the overall economic gain relies on reliable genetic parameters for the traits that are missing for most of the traits. Nevertheless, the results give some insight about the expected genetic gain of each trait their relative contribution to the overall economic gain. I avlsprogrammer for atlantisk laks blir det selektert for flere egenskaper trekk samtidig. Mangel på økonomiske vekter kan føre til ugunstig relativ vekting av egenskapene og dermed med en ikke optimal langsiktig genetisk endring av egenskapene. Pålitelige økonomiske vekter for viktige egenskaper hos laks er derfor nødvendig for å optimalisere et avlsprogram. Målet med oppgaven var for det første å regne ut økonomiske verdier for seks viktige produksjonsegenskaper hos atlantisk laks i vekstfasen i sjøen, og for det andre å estimere den genetiske framgangen for hver egenskap, og for det tredje å beregne det relative bidraget av hver egenskap til den totale økonomiske framgangen for alle egenskapene. De studerte egenskapene var tilvekst fram til slakting (HBW), fôrutnytting (FCR), tidlig kjønnsmodning (ESM), generell dødelighet (GM), spesifikk dødelighet (SM) og filetutbytte (FY). Tilvekst ble modellert ved bruk av vekstfaktoren. De økonomiske verdiene for egenskapene ble uttrykt som NOK/enhet/kg produsert rund kroppsvekt. submittedVersion M-ABG
author2 Gjerde, Bjarne
Lillehammer, Marie
format Master Thesis
author Wu, Liyasu
author_facet Wu, Liyasu
author_sort Wu, Liyasu
title Derivation of economic values for important production traits in Atlantic salmon
title_short Derivation of economic values for important production traits in Atlantic salmon
title_full Derivation of economic values for important production traits in Atlantic salmon
title_fullStr Derivation of economic values for important production traits in Atlantic salmon
title_full_unstemmed Derivation of economic values for important production traits in Atlantic salmon
title_sort derivation of economic values for important production traits in atlantic salmon
publisher Norwegian University of Life Sciences, Ås
publishDate 2020
url https://hdl.handle.net/11250/2726654
op_coverage Norway
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geographic Norway
Føre
Verdier
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geographic_facet Norway
Føre
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genre Atlantic salmon
genre_facet Atlantic salmon
op_relation Nofima: 11262
https://hdl.handle.net/11250/2726654
op_rights Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no
op_rightsnorm CC-BY-NC-ND
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spelling ftunivmob:oai:nmbu.brage.unit.no:11250/2726654 2023-05-15T15:30:54+02:00 Derivation of economic values for important production traits in Atlantic salmon Utrekning av økonomiske vekter for viktige produksjonsegenskaper hos laks Wu, Liyasu Gjerde, Bjarne Lillehammer, Marie Norway 2020 application/pdf https://hdl.handle.net/11250/2726654 eng eng Norwegian University of Life Sciences, Ås Nofima: 11262 https://hdl.handle.net/11250/2726654 Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no CC-BY-NC-ND Atlantic salmon economic value selection program economic response Master thesis 2020 ftunivmob 2021-09-23T20:14:40Z Atlantic salmon breeding programs selected several traits simultaneously. Lack of economic values may lead to inappropriate relative weighting of the traits selected for and with a suboptimal long-term genetic gain of the traits. Derivation of reliable economic values for important traits in Atlantic salmon is therefore necessary to optimize the economic benefits of the breeding program. The objective of the thesis was to firstly to derive economic values for six important production traits of Atlantic salmon in the grow-out phase in seawater, and secondly to predict the genetic gain for each trait, and thirdly to calculate the relative contribution of each trait to the overall economic genetic gain. The studied traits were harvest body weight (HBW), feed conversion ratio (FCR), early sexual maturity (ESM), general mortality (GM), specific mortality (SP) and fillet yield (FY). Harvest body weight was modeled through the growth factor. The economic values for the traits were expressed as NOK/trait unit/kg round body weight produced. HBW was the most important trait with an economic value of 1.95 NOK/kg; followed by the correlated trait FCR with -11.8 NOK/kg feed, FY with 0.82 NOK/%-unit; GM with -0.26 NOK/%-unit; SM with -0.37 NOK/%-unit, and ESM with -0.22 NOK/%-unit. The magnitude of their contribution to the overall economic genetic gain was 48 % (HBW), 47 % (FCR), 5.3 % (FY), 0.9 % (GM), 0.1 % (SM) and -1.6 % (ESM). Given that records of feed intake could be obtained, the contribution of FCR to the overall genetic gain increased by 11 %- units while that of HBW decreased by 10 %-units. The overall economic genetic gain per generation was estimated to NOK 2.20 and NOK 2.45 per kg fish produced without and with feed intake records, respectively. This is the first reported study on the derivation of economic value for traits in Atlantic salmon. The predicted genetic gains for the studied traits and their relative contribution to the overall economic gain relies on reliable genetic parameters for the traits that are missing for most of the traits. Nevertheless, the results give some insight about the expected genetic gain of each trait their relative contribution to the overall economic gain. I avlsprogrammer for atlantisk laks blir det selektert for flere egenskaper trekk samtidig. Mangel på økonomiske vekter kan føre til ugunstig relativ vekting av egenskapene og dermed med en ikke optimal langsiktig genetisk endring av egenskapene. Pålitelige økonomiske vekter for viktige egenskaper hos laks er derfor nødvendig for å optimalisere et avlsprogram. Målet med oppgaven var for det første å regne ut økonomiske verdier for seks viktige produksjonsegenskaper hos atlantisk laks i vekstfasen i sjøen, og for det andre å estimere den genetiske framgangen for hver egenskap, og for det tredje å beregne det relative bidraget av hver egenskap til den totale økonomiske framgangen for alle egenskapene. De studerte egenskapene var tilvekst fram til slakting (HBW), fôrutnytting (FCR), tidlig kjønnsmodning (ESM), generell dødelighet (GM), spesifikk dødelighet (SM) og filetutbytte (FY). Tilvekst ble modellert ved bruk av vekstfaktoren. De økonomiske verdiene for egenskapene ble uttrykt som NOK/enhet/kg produsert rund kroppsvekt. submittedVersion M-ABG Master Thesis Atlantic salmon Open archive Norwegian University of Life Sciences: Brage NMBU Norway Føre ENVELOPE(14.465,14.465,68.663,68.663) Verdier ENVELOPE(-60.883,-60.883,-66.033,-66.033) Sjøen ENVELOPE(9.917,9.917,63.467,63.467)