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Genetic assessment of residual feed intake as a feed efficiency trait in the Pacific white shrimp Litopenaeus vannamei
- Source :
- Genetics, Selection, Evolution : GSE, Genetics Selection Evolution, Vol 49, Iss 1, Pp 1-9 (2017), Genetics Selection Evolution, Genetics Selection Evolution, BioMed Central, 2017, 49 (1), pp.61. ⟨10.1186/s12711-017-0334-1⟩
- Publication Year :
- 2017
- Publisher :
- BioMed Central, 2017.
-
Abstract
- Background Residual feed intake (RFI) was investigated as a measure of feed efficiency in a breeding population of Litopenaeus vannamei. Shrimp from 34 families were housed individually and feed efficiency and growth traits were recorded during two successive growth periods. The objectives of this study were (1) to estimate the heritability of RFI and related traits, including feed efficiency ratio (FER), average daily gain (ADG) and daily feed intake (DFI), (2) to determine the relationships between RFI and other traits, and (3) to evaluate the variation of these traits across two growth periods. Results Shrimp displayed large inter-individual variation in RFI, FER, ADG and DFI during each growth period. Heritability estimates of all these traits during both periods reached high values (0.577 ± 0.232 to 0.707 ± 0.252). RFI showed weak and no genetic correlations with ADG during the two growth periods between days 1 to 21 (0.135 ± 0.204) and 22 to 42 (–0.018 ± 0.128), respectively, but high positive genetic correlations with DFI (>0.8). Weak and moderate negative genetic correlations were observed between RFI and FER during the two periods (–0.126 ± 0.208 and –0.387 ± 0.183). As evidenced by the high genetic correlations between the two periods for each trait (>0.6), trait performance of the shrimp tended to be consistent across periods. Conclusions For the first time, accurate measurement of individual feed efficiency on a large scale was achieved in shrimp. Although the estimated heritability reported here for RFI may be overestimated, it is a heritable trait in L. vannamei that can be improved by genetic improvement. For L. vannamei, the biggest potential advantage in using RFI as a measure of feed efficiency is that it is independent of growth rate, and thus genetic selection on RFI has the potential to improve feed efficiency and reduce feed intake, without compromising growth performance. Electronic supplementary material The online version of this article (doi:10.1186/s12711-017-0334-1) contains supplementary material, which is available to authorized users.
- Subjects :
- SELECTION
Animal breeding
Dairy & Animal Science
[SDV]Life Sciences [q-bio]
Breeding
Eating
10 Technology
lcsh:SF1-1100
Genetics & Heredity
CARCASS TRAITS
education.field_of_study
NILE TILAPIA
Agriculture
04 agricultural and veterinary sciences
General Medicine
Shrimp
Phenotype
BEEF-CATTLE
Agriculture, Dairy & Animal Science
Life Sciences & Biomedicine
Research Article
PENAEUS-MONODON
lcsh:QH426-470
Animal feed
Population
RAINBOW-TROUT
Biology
Feed conversion ratio
Genetic correlation
PARAMETERS
Animal science
Penaeidae
Genetics
Animals
DUROC PIGS
14. Life underwater
Selection, Genetic
education
Ecology, Evolution, Behavior and Systematics
Science & Technology
business.industry
0402 animal and dairy science
GROWTH-RATE
Heritability
06 Biological Sciences
040201 dairy & animal science
Animal Feed
Biotechnology
OREOCHROMIS-NILOTICUS
lcsh:Genetics
040102 fisheries
0401 agriculture, forestry, and fisheries
Animal Science and Zoology
lcsh:Animal culture
Residual feed intake
business
Subjects
Details
- Language :
- English
- ISSN :
- 0999193X and 12979686
- Database :
- OpenAIRE
- Journal :
- Genetics, Selection, Evolution : GSE, Genetics Selection Evolution, Vol 49, Iss 1, Pp 1-9 (2017), Genetics Selection Evolution, Genetics Selection Evolution, BioMed Central, 2017, 49 (1), pp.61. ⟨10.1186/s12711-017-0334-1⟩
- Accession number :
- edsair.doi.dedup.....a0c7b2207826f783cb9042c099b315b0