Results 21 to 30 of about 3,562,262 (302)

Genetic parameters and litter trait trends of Danish pigs in South Vietnam [PDF]

Animal Bioscience, 2021
Objective The objective of this study was to estimate the genetic parameters and various litter trait trends of Danish pigs in South Vietnam, including the number born alive (NBA), number weaned (NW), and litter weight at the 21st day (LW21).
Nguyen Huu Tinh, Tran Van Hao, Anh Phu Nam Bui   +2 more
doaj   +1 more source

Genetic Trend Estimators

Journal of Dairy Science, 1974
Abstract Five estimators of intraherd genetic trend were compared in 13,615 Holstein first lactations from 220 progeny test herds. The preferred method estimated the trend as minus twice the regression of deviated production on time of freshening within sire-herd subclasses. Estimates of annual intraherd genetic trend from this approach were 82 kg of
R.L. Powell, A.E. Freeman
openaire   +1 more source

Genetic parameters and trends for production and reproduction traits of a Landrace herd in China

Journal of Integrative Agriculture, 2016
The objectives of this study were to estimate the genetic parameters and the breeding progress in a Landrace herd in China, and to predict the potential benefits by applying new breeding technology.
Zhe ZHANG, Hao ZHANG, Rong-yang PAN, Long WU, Ya-lan LI, Zan-mou CHEN, Geng-yuan CAI, Jia-qi LI, Zhen-fang WU   +8 more
doaj   +1 more source

Measurement of Genetic Trend

Journal of Dairy Science, 1961
Summary A method for estimating trend in genetic merit is described for a population consisting of animals sired by artificial insemination and of animals sired naturally. The contemporary comparison of unselected progeny of an artificially used sire and their naturally sired contemporaries making first records under the same conditions constitutes a
L.D. Van Vleck, C.R. Henderson
openaire   +1 more source

Estimation of variance components, genetic parameters and genetic trends for litter size of swines Estimação de parâmetros genéticos, componentes de variância e tendências genéticas em tamanho de leitegada de suínos

Revista Brasileira de Zootecnia, 2010
Records of Large White breed animals were used to estimate variance components, genetic parameters and trends for the character total number of born piglets (TNBP) as measure of litter size.
Leandro Barbosa, Paulo Sávio Lopes, Adair José Regazzi, Robledo de Almeida Torres, Mário Luiz Santana Júnior, Renata Veroneze   +5 more
doaj   +1 more source

Direct and maternal genetic trend estimates for body weight traits of Iran-Black Sheep using multivariate animal models [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2016
The objective of the present study was to estimate direct and maternal genetic trends for body weight traits in IranBlack sheep using data which were collected for 24 years.
Javad Ahmadpanah, Hasan Baneh, Chia Kohnepoushi   +2 more
doaj  

Genetic evaluation of clinical mastitis traits in Holstein cattle

Czech Journal of Animal Science, 2018
The results obtained from different models for predicting breeding values for clinical mastitis (CM) in Holstein cattle were compared. CM was recorded in 30 882 lactations of 12 793 cows in 8 herds from 1996 to 2016. CM was considered either as an all-or-
Eva Kašná, Ludmila Zavadilová, Miloslava Štípková   +2 more
doaj   +1 more source

Single-step prediction of genomic breeding value in a small dairy cattle population with strong import of foreign genes

Czech Journal of Animal Science, 2012
The breeding value (EBV) of Holstein cattle milk performance from the first lactation was evaluated using a regular Animal Model or by Single-Step Prediction of the genomic breeding value (GEBV).
J. Přibyl, J. Haman, T. Kott, J. Přibylová, M. Šimečková, L. Vostrý, L. Zavadilová, V. Čermák, Z. Růžička, J. Šplíchal, M. Verner, J. Motyčka, L. Vondrášek   +12 more
doaj   +1 more source

Daftar Isi [PDF]

, 2016
Daftar Isi MediaTrend Vol. XI No.
Trend, Media
core   +1 more source