Zobrazeno 1 - 10
of 60
pro vyhledávání: '"J. S. Brinks"'
Publikováno v:
Nigerian Journal of Animal Production; Vol 8, No 1 (1981); 97-111
Selection intensity and generation interval were evaluated in a Hereford cattle herd made up of 14 inbred lines and 14 linecross groups corresponding to the lines of inbred sires at the Suan Juan Basin Research Center, Hesperus, Colorado. Selection i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ec81e7411b635c2aaf87d4710892083
https://doi.org/10.51791/njap.v8i2.1929
https://doi.org/10.51791/njap.v8i2.1929
Publikováno v:
Nigerian Journal of Animal Production. 8:112-125
Data from 14 inbred lines and 14 linecross groups of Hereford cattled at the San Juan Basin Research Centre, Hesperus, were used to evaluate expected and realized response in birth and weapling fraits and post weaning traits in males and females over
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a224f9904959577bbadf3a5d1631c567
https://doi.org/10.51791/njap.v8i2.1934
https://doi.org/10.51791/njap.v8i2.1934
Publikováno v:
Journal of Animal Science. 72:2247-2253
An algorithm for estimating variance components (Method R) based on the linear regression coefficient (R) of recent (more accurate) on previous (less accurate) individual genetic predictions is presented. The previous prediction is obtained by analyz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35cf22d5d52f6fc1289275c68a43775a
https://doi.org/10.2527/1994.7292247x
https://doi.org/10.2527/1994.7292247x
Publikováno v:
Journal of Animal Science. 72:34-37
The theoretical development of a procedure to detect bias in genetic predictions is presented. The procedure is based on the expectation of three statistics. These statistics detect bias by identifying systematic, unexpected change in subsequent anal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::530e085df834055c3d056f9e15080d5c
https://doi.org/10.2527/1994.72134x
https://doi.org/10.2527/1994.72134x
Publikováno v:
Journal of animal science. 80(8)
Information on mature weight, hip height, and body condition score from Angus cows was analyzed to estimate variance components and compare prediction models. Observations from repeated measures were analyzed with animal models with or without condit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4e96ca3fa845157d1da238c5bf977c3
https://pubmed.ncbi.nlm.nih.gov/12211374
https://pubmed.ncbi.nlm.nih.gov/12211374
Publikováno v:
Journal of animal science. 78(8)
A primary objective of this study was to determine whether the binary traits heifer pregnancy (HP) and subsequent rebreeding (SR) were heritable in an experimental population of Angus cattle. A second objective was to determine the nature of the addi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33af1c94b221fda6bc31257b1e0000d5
https://pubmed.ncbi.nlm.nih.gov/10947093
https://pubmed.ncbi.nlm.nih.gov/10947093
Publikováno v:
Journal of animal science. 72(9)
An algorithm for estimating variance components (Method R) based on the linear regression coefficient (R) of recent (more accurate) on previous (less accurate) individual genetic predictions is presented. The previous prediction is obtained by analyz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::0b999066769f99748571a4efb2083d46
https://pubmed.ncbi.nlm.nih.gov/8002443
https://pubmed.ncbi.nlm.nih.gov/8002443
Publikováno v:
Journal of animal science. 70(12)
Significant genetic variation exists within and between breeds of beef cattle for age at puberty (AP). In general, faster-gaining breed groups of larger mature size reach puberty at a later age than do slower-gaining breed groups of smaller mature si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c739e05b544373bf168e331e1612dba1
https://pubmed.ncbi.nlm.nih.gov/1474037
https://pubmed.ncbi.nlm.nih.gov/1474037
Publikováno v:
Journal of animal science. 69(9)
Coefficients of inbreeding are commonly used in mixed-model methods for forming inverses of Wright's numerator relationship matrix and transformation matrices used in variance component estimation and national cattle evaluation. Computation of exact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8c894fc3140b574addd31b756e7c419
https://pubmed.ncbi.nlm.nih.gov/1938642
https://pubmed.ncbi.nlm.nih.gov/1938642
Publikováno v:
Journal of Animal Science. 68:330
Performance records on 41,184 Red Angus cattle were analyzed and estimates of parameters calculated for absolute growth rate, relative growth rate and restricted selection indices. Heritability estimates for birth weight, 205-d weight, 365-d weight a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82274b8869b4daa884c4b19b62192309
https://doi.org/10.2527/1990.682330x
https://doi.org/10.2527/1990.682330x