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Quantitative genetics of growth, carcass-quality traits, and disease resistance in hybrid striped bass (Morone chrysops [female] x Morone saxatilis [male])Wang, Xiaoxue 15 May 2009 (has links)
A 10 x 10 factorial mating design and a ‘common-garden’ rearing approach were
employed to examine genetic effects and heritability of growth, carcass-quality traits,
and disease resistance, important production traits in the aquaculture of hybrid striped
bass (♀ white bass, Morone chrysops, crossed with ♂striped bass, Morone saxatilis).
Genotypes at four to ten nuclear-encoded microsatellites were used for parentage
assignment and a general, linear-mixed model and a Restricted Maximum Likelihood
(REML) algorithm were used to estimate variance components associated with dam, sire,
and dam x sire interaction effects.
Dam and sire effect on juvenile growth (weight, length and growth rates) were
significant, whereas dam by sire interaction effect was not. Estimates of broad-sense
heritability for growth, based on family means (h2
f), in dams ranged from 0.60 ± 0.20 to
0.82 ± 0.10 and in sires ranged from 0.43 ± 0.20 to 0.75 ± 0.18. High correlations were
found between growth rates measured at two time intervals. Estimates of general
combining ability for growth rates differed significantly among dams and among sires,
whereas estimates of specific combining ability for each dam × sire combination did not differ significantly from zero. These results suggest that additive-effect genes
contributed to the differences in juvenile growth.
Dam and sire effect on fillet weight were significant; dam effect on liver weight
and sire effect on total viscera weight were also significant. Dam and sire effect on
hepatosomatic index and viscerasomatic index were significant, as was dam and sire
interaction effect on viscerasomatic index. Phenotypic and genetics correlations between
body weight and carcass-quality traits were high (0.85 - 1.00). Phenotypic correlations
between body weight and standardized carcass-quality traits were positive but low,
ranging from 0.07 to 0.19.
Resistance to S. iniae was assessed in a challenge experiment, using the 10 dam x
10 sire factorial mating design. A significant effect of sire on resistance to S. iniae was
found, and offspring from one sire had a 2.4 times higher probability of dying than
offspring from the ‘average’ sire. Genetic effects on the immune-response parameters
and on stress-response parameters assessed were non-significant.
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Evaluation of various dietary supplements and strategies to enhance growth and disease management of hybrid striped bass Morone chrysops x M. saxatilisLi, Peng 12 April 2006 (has links)
The US hybrid striped bass (Morone chrysops x M. saxatilis) industry has been
negatively impacted by infectious diseases because there are very few approved drugs
and vaccines. Therefore, a series of experiments was conducted to explore the potential
use of various dietary supplements including autolyzed brewers yeast, the commercial
prebiotic GroBiotic®, oligonucleotides and levamisole for improvement of hybrid
striped bass growth, immunity and resistance to disease caused by various pathogenic
bacteria.
In two trials with brewers yeast, fish fed diets supplemented with yeast at 2%
generally showed enhanced weight gain and feed efficiency compared with those fed a
basal diet. Brewers yeast also positively influenced resistance to S. iniae infection. In
addition, results of immune response assays demonstrated that brewers yeast can be
administered for relatively long periods without causing immunosuppression.
GroBiotic® (Grobiotic) also resulted in significantly enhanced weight
gain, innate immune responses and resistance of juvenile hybrid striped bass to S. iniae
infection. An additional experiment with sub-adult fish showed significantly reduced
mortality of fish fed a diet supplemented with GroBiotic® at 2% when subjected to an in-situ Mycobacterium marinum challenge. This is the first report of positive effects from
dietary prebiotics for fish health management, although many fundamental questions
should be pursued further.
Dietary supplementation of a commercial oligonucleotide product (Ascogen P®)
at 0.5% of the diet was shown to enhance resistance of hybrid striped bass against S. iniae
infection and increased their neutrophil oxidative radical production. However, the effect
on growth was marginal.
Dietary levamisole supplementation at a low level (100 mg/kg) enhanced the
growth and feed efficiency of juvenile hybrid striped bass. However, an elevated dosage
(1000 mg/kg diet) strongly suppressed growth, feed intake and feed efficiency.
Hypothesized beneficial influences, including antibody production and resistance to S.
iniae and A. hydrophila were not substantiated. Although dietary levamisole increased
fish macrophage respiratory burst, an in vitro study failed to show a direct effect on
cultured macrophages.
This suite of studies demonstrated the potential use of some dietary supplements
to enhance hybrid striped bass production. Thus, immunonutrition represents a valuable
strategy to apply in aquaculture.
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Overwintering abundance and distribution of striped bass (Morone saxtilis) in the Hudson River Estuary using hydroacoustic techniquesNagy, Brian W. January 1900 (has links)
Thesis (M.S.)--West Virginia University, 2002. / Title from document title page. Document formatted into pages; contains viii, 113 p. : ill. (some col.), col. map. Vita. Includes abstract. Includes bibliographical references.
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Doctoral thesis recital (bass trombone)Workman, Darren 27 July 2012 (has links)
Reciprocity / James Meador --Sang till Lotta / Jan Sandstrom -- Tuba concerto / John Williams -- Vier ernste Gesange / Johannes Brahms -- The dern / Dennis Llinas. / text
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Doctoral thesis recital (lecture) bass trumpetMarks, Jeremy 24 February 2014 (has links)
"The orchestral trombonist's guide to the bass trumpet and its excerpts." / text
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Doctoral thesis recital (double bass)Kwak, Se Hyun 25 March 2014 (has links)
Suite for violin and double bass / Reinhold Gliere ; transscribed by Frank Proto -- Duet for cello and double bass in D major / Gioacchino Rossini -- Piano trio no. 39 in G major : "Gypsy" / Joseph Haydn / text
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The Preparation and Performance of Selected Schubert Songs for Bass Trombone and PianoCamp, Douglas Wayne January 2007 (has links)
This document will examine how Schubert's songs can be used to increase the existing bass trombone solo literature. The primary focus is on the process of selecting, organizing, and arranging songs for the purpose of creating an original instrumental performance edition. The document will discuss elements that influence individual song selection, compositional attributes of the music, the drama represented through the text, and the boundaries these expressive components impose on the arranging process. The arranging process is discussed for nine individual songs including compositional elements which might influence the ordering of songs in a specific performance. A brief historic discussion overviews the role of the bass trombone in early nineteenth-century classical music, Schubert's life in regards to his contribution to song literature, and the influence of politics and economics during Schubert's life. An extensive Appendices contains a recommended list of Schubert lieder recordings, detailed text translations, bass trombone solo parts and full piano scores for all nine songs arranged for this document.
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Replacement of fish meal by alternative protein sources in diets for juvenile black sea bassSullivan, Katherine B. January 2008 (has links) (PDF)
Thesis (M.S.)--University of North Carolina Wilmington, 2008. / Includes appendix. Title from PDF title page (viewed May 27, 2009) Includes bibliographical references (p. 69-73)
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Feeding ecology of age-o smallmouth bass in the New River, West Virginia /Easton, Robert S., January 1992 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 88-94). Also available via the Internet.
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Landscape and inchannel factors affecting the distribution and abundance of riverine smallmouth bass in MissouriBrewer, Shannon K., January 2008 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2008. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on July 22, 2009) Includes bibliographical references.
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