Offspring sex ratio in domestic goats: Trivers-Willard out of natural selection
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10301885" target="_blank" >RIV/00216208:11310/15:10301885 - isvavai.cz</a>
Alternative codes found
RIV/00023752:_____/15:43914774
Result on the web
<a href="http://dx.doi.org/10.17221/8170-CJAS" target="_blank" >http://dx.doi.org/10.17221/8170-CJAS</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.17221/8170-CJAS" target="_blank" >10.17221/8170-CJAS</a>
Alternative languages
Result language
angličtina
Original language name
Offspring sex ratio in domestic goats: Trivers-Willard out of natural selection
Original language description
The Trivers-Willard hypothesis (TWH) predicts the ability of mothers to adaptively adjust off-spring sex ratio through differential maternal investment based on their relative body condition. In the present study we have analyzed an extensive data set onthe secondary sex ratio (SSR) including 59 335 goat kids born in 30 633 litters to 11 644 mothers on farms all over the Czech Republic during the years 1992-2004. We found a male-biased SSR 0.568, which significantly deviates from the predicted balancedFisherian equilibrium 1:1 (P < 0.0001). A generalized estimating equation model controlled for mother's identity revealed a significant effect of maternal age and season of conception (P < 0.001). Conversely, neither paternal age, gestation length, norlitter size were found to explain the sex ratio variation. We also failed to prove any effect of variables associated with maternal condition, particularly her body weight, breed, arbitrary ranking of genetic quality, and hornedness that
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EG - Zoology
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Czech Journal of Animal Science
ISSN
1212-1819
e-ISSN
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Volume of the periodical
60
Issue of the periodical within the volume
5
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
8
Pages from-to
208-215
UT code for WoS article
000357483200002
EID of the result in the Scopus database
2-s2.0-84929620058