Ranking of ecuadorian sires by best linear unbiased prediction

Ranking of ecuadorian sires by best linear unbiased prediction

First and second lactation records from 785 Ecuadorian Holsteins distributed in four altitude areas, three "year" groups and six "season” groups were analyzed with the objective of ranking sires. BLUP approach was used to rank sires from three models and computer programs from Genstat were used to assist the analysis. Results show that sires did not rank the same in first and second lactation records.R^2 statistics were obtained for each model; the highest value, 0.50, was obtained with a model (iii) which includes herd, year group, season group, and sire as sources of variation in first lactation milk yield.

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Bibliographic Details
Main Author: Hervas Ordoñez, Thelmo Aurelio
Format: Tesis biblioteca
Language:English
Published: Michigan: Michigan State University, Department of Dairy Science, 1982. 92 p. 1982
Subjects:GANADO BOVINO, GANADERÍA, ECUADOR, MAG. SC. THESIS,
Online Access:http://repositorio.iniap.gob.ec/jspui/handle/41000/342
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spelling dig-iniap-41000-3422023-11-19T14:29:17Z Ranking of ecuadorian sires by best linear unbiased prediction Hervas Ordoñez, Thelmo Aurelio GANADO BOVINO GANADERÍA ECUADOR MAG. SC. THESIS First and second lactation records from 785 Ecuadorian Holsteins distributed in four altitude areas, three "year" groups and six "season” groups were analyzed with the objective of ranking sires. BLUP approach was used to rank sires from three models and computer programs from Genstat were used to assist the analysis. Results show that sires did not rank the same in first and second lactation records.R^2 statistics were obtained for each model; the highest value, 0.50, was obtained with a model (iii) which includes herd, year group, season group, and sire as sources of variation in first lactation milk yield. 2015-05-14T20:19:16Z 2015-05-14T20:19:16Z 1982 Tesis *EC-INIAP-BEESC-MGC. Quito (T/H577r) http://repositorio.iniap.gob.ec/jspui/handle/41000/342 en 2 p. application/pdf E. E. Santa Catalina Michigan: Michigan State University, Department of Dairy Science, 1982. 92 p.
institution INIAP
collection DSpace
country Ecuador
countrycode EC
component Bibliográfico
access En linea
databasecode dig-iniap
tag biblioteca
region America del Sur
libraryname Biblioteca INIAP
language English
topic GANADO BOVINO
GANADERÍA
ECUADOR
MAG. SC. THESIS
GANADO BOVINO
GANADERÍA
ECUADOR
MAG. SC. THESIS
spellingShingle GANADO BOVINO
GANADERÍA
ECUADOR
MAG. SC. THESIS
GANADO BOVINO
GANADERÍA
ECUADOR
MAG. SC. THESIS
Hervas Ordoñez, Thelmo Aurelio
Ranking of ecuadorian sires by best linear unbiased prediction
description First and second lactation records from 785 Ecuadorian Holsteins distributed in four altitude areas, three "year" groups and six "season” groups were analyzed with the objective of ranking sires. BLUP approach was used to rank sires from three models and computer programs from Genstat were used to assist the analysis. Results show that sires did not rank the same in first and second lactation records.R^2 statistics were obtained for each model; the highest value, 0.50, was obtained with a model (iii) which includes herd, year group, season group, and sire as sources of variation in first lactation milk yield.
format Tesis
topic_facet GANADO BOVINO
GANADERÍA
ECUADOR
MAG. SC. THESIS
author Hervas Ordoñez, Thelmo Aurelio
author_facet Hervas Ordoñez, Thelmo Aurelio
author_sort Hervas Ordoñez, Thelmo Aurelio
title Ranking of ecuadorian sires by best linear unbiased prediction
title_short Ranking of ecuadorian sires by best linear unbiased prediction
title_full Ranking of ecuadorian sires by best linear unbiased prediction
title_fullStr Ranking of ecuadorian sires by best linear unbiased prediction
title_full_unstemmed Ranking of ecuadorian sires by best linear unbiased prediction
title_sort ranking of ecuadorian sires by best linear unbiased prediction
publisher Michigan: Michigan State University, Department of Dairy Science, 1982. 92 p.
publishDate 1982
url http://repositorio.iniap.gob.ec/jspui/handle/41000/342
work_keys_str_mv AT hervasordonezthelmoaurelio rankingofecuadoriansiresbybestlinearunbiasedprediction
_version_ 1787226574396850176

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