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	Provedor de dados 106 (1) 74 (1) Autor Choak Bulakul (1) Cobuci,Jaime Araujo (1) Costa,Claudio Napolis (1) Euclydes,Ricardo Frederico (1) Lopes,Paulo Sávio (1) Monchai Duangjinda (1) Pakanit Kuppitayanant (1) Pereira,Carmen Silva (1) Phakphume Saowaphak (1) Pongchan Na-Lampang (1) Torres,Robledo de Almeida (1) Mais... Palavra-chave Genetic evaluation (2) Persistency of lactation (2) Primiparous crossbred Holstein-Friesian dairy cattle (1) Random regression model (1) Random regression models (1) Rank correlation (1) การประเมินพันธุกรรม (1) ความคงทนของการให้นํ้านม (1) ค่าการผสมพันธุ์ (1) พันธุ์ลูกผสมโฮลสไตน์-ฟรีเชียน (1) โคนม (1) โมเดลรีเกรซชันสุ่ม (1) Mais... Tipo do documento Collection (1) Info:eu-repo/semantics/article (1) Ano 2011 (1) 2007 (1) País Brazil (1) Thailand (1) Idioma Inglês (1) Thailandês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Genetic evaluation for persistency of lactation in Holstein cows using a random regression model 74 Cobuci,Jaime Araujo; Euclydes,Ricardo Frederico; Costa,Claudio Napolis; Torres,Robledo de Almeida; Lopes,Paulo Sávio; Pereira,Carmen Silva. A model for analyzing test day records including both fixed and random coefficients was applied to the genetic evaluation of first lactation data for Holstein cows. Data comprising 87045 test-day milk yield records from calving between 1997 and 2001 from Holstein herds in 10 regions of the Brazilian state of Minas Gerais. Six persistency of lactation measures were evaluated using breeding values obtained by random regression analyses. The Wilmink function was used to model the additive genetic and permanent environmental effects. Residual variance was constant throughout lactation. Ranking for animals did not change among criteria for persistency measurements, but ranking changes were observed when the estimated breeding value (EBV) for persistency of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic evaluation; Persistency of lactation; Rank correlation; Random regression models. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300009 การประเมินพันธุกรรมความคงทนของการให้นํ้านมในโคนมลูกผสมโฮลสไตน์-ฟรีเชียนที่ให้ลูกครั้งแรกโดยใช้โมเดลรีเกรซชันสุ่ม 106 Phakphume Saowaphak; Monchai Duangjinda; Pongchan Na-Lampang; Pakanit Kuppitayanant; Choak Bulakul. Objectives of this study were to 1) determine the appropriate Covariance Function Coefficient (CFC) number of Modified Normalized Legendre Polynomial (MNLP) using in Random Regression Models (RRLP) and 2) mathematical equation for calculate Persistency of Lactation (PL) value. All 9 RRLPs with different 3 to 5 CFC number nested within additive genetics and permanent environmental random effects were used to analyze total 25,845 test-day milk yield records of primiparous crossbred Holstein-Friesian dairy cattle from Chokchai farm. Variance components were estimated by average information-restricted maximum likelihood algorithm and predicted random effects with best linear unbiased prediction method. The results found that RRLP using 3 and 4 CFC numbers... Tipo: Collection Palavras-chave: Persistency of lactation; Genetic evaluation; Random regression model; Primiparous crossbred Holstein-Friesian dairy cattle; โคนม; พันธุ์ลูกผสมโฮลสไตน์-ฟรีเชียน; การประเมินพันธุกรรม; โมเดลรีเกรซชันสุ่ม; ความคงทนของการให้นํ้านม; ค่าการผสมพันธุ์. Ano: 2011 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5268 Registros recuperados: 2 Primeira ... 1 ... Última

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