Results 11 to 20 of about 816,699 (265)

Quantile regression under random censoring [PDF]

Journal of Econometrics, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Honoré, B, Khan, S, Powell, JL
openaire   +3 more sources

Inclusion of bioclimatic variables in genetic evaluations of dairy cattle [PDF]

Animal Bioscience, 2021
Objective Considering the importance of dairy farming and the negative effects of heat stress, more tolerant genotypes need to be identified. The objective of this study was to investigate the effect of heat stress via temperature-humidity index (THI ...
Renata Negri, Ignacio Aguilar, Giovani Luis Feltes, Juliana Dementshuk Machado, José Braccini Neto, Fabiana Martins Costa-Maia, Jaime Araújo Cobuci   +6 more
doaj   +1 more source

LOGISTIC REGRESSION WITH RANDOM COEFFICIENTS [PDF]

ETS Research Report Series, 1993
ABSTRACTAn approximation to the likelihood for the generalized linear models with random coefficients is derived and is the basis for an approximate Fisher scoring algorithm. The method is illustrated on the logistic regression model for one‐way classification, but it has an extension to the class of generalized linear models and to more complex data ...
openaire   +1 more source

Estimation of genetic parameters for milk yield using a random regression test-day model in first parity dairy cows under pasture-based systems of Los Ríos region in Chile

Austral Journal of Veterinary Sciences, 2020
In dairy cattle, genetic selection for milk yield was generally based on 305 days lactation records that were calculated from available monthly test-day milk yield records.
Héctor Uribe, Felipe Lembeye
doaj   +1 more source

Genomic and phenotypic selection indices for decreased birth weight, shortening fattening period, and regulating total weight gain in beef cattle [PDF]

Animal Bioscience
Objective This study aimed to develop genomic and phenotypic indices for beef cattle selection that afford progeny with reduced birth weight and fattening period.
Kenji Togashi, Atsushi Ogino, Toshio Watanabe, Masakazu Shinomiya, Masashi Kinukawa, Kazuhito Kurogi, Masanobu Nurimoto   +6 more
doaj   +1 more source

Models for evaluation of growth of performance tested bulls

Czech Journal of Animal Science, 2008
Before being used for insemination, young bulls of Czech Fleckvieh (CF) are tested for growth at performance-test stations. While at stations, the bulls are weighed monthly. Evaluation included 7 448 bulls with 82 676 records of weight measured from 6 to
J. Přibyl, H. Krejčová, J. Přibylova, I. Misztal, S. Tsuruta, N. Mielenz   +5 more
doaj   +1 more source

Simultaneous estimation of daily weight and feed intake curves for growing pigs by random regression

Animal, 2012
In this study, random regression models were used to estimate covariance functions between feed intake and BW in boars from the two breeds: the Norwegian Landrace and the Norwegian Duroc.
M. Wetten, J. Ødegård, O. Vangen, Th.H.E. Meuwissen   +3 more
doaj   +1 more source

Analysis of feed intake and energy balance of high-yielding first lactating Holstein cows with fixed and random regression models

Animal, 2009
At the dairy research farm Karkendamm, the individual roughage intake was measured since 1 September 2005 using a computerised scale system to estimate daily energy balances as the difference between energy intake and calculated energy requirements for ...
H. Hüttmann, E. Stamer, W. Junge, G. Thaller, E. Kalm   +4 more
doaj   +1 more source

Genetic correlations between production and disease traits during first lactation in Holstein cows

Animal, 2014
The aim of this study was to estimate genetic correlations between milk yield, somatic cell score (SCS), mastitis, and claw and leg disorders (CLDs) during first lactation in Holstein cows by using a threshold–linear random regression test-day model.
K. Hagiya, T. Yamazaki, Y. Nagamine, K. Togashi, S. Yamaguchi, Y. Gotoh, T. Kawahara, Y. Masuda, M. Suzuki   +8 more
doaj   +1 more source

Genetics of heat tolerance for milk yield and quality in Holsteins

Animal, 2017
Tropical and sub-tropical climates are characterized by high temperature and humidity, during at least part of the year. Consequently, heat stress is common in Holstein cattle and productive and reproductive losses are frequent.
M.L. Santana, Jr, A.B. Bignardi, R.J. Pereira, G. Stefani, L. El Faro   +4 more
doaj   +1 more source