Results 1 to 10 of about 418,825 (313)

Genetic parameters of eventing horse competition in France [PDF]

Genetics Selection Evolution, 2001
Genetic parameters of eventing horse competitions were estimated. About 13 000 horses, 30 000 annual results during 17 years and 110 000 starts in eventing competitions during 8 years were recorded. The measures of performance were logarithmic transformations of annual earnings, annual earnings per start, and annual earnings per place, and underlying ...
Ricard, Anne, Chanu, Isabelle
openaire   +6 more sources

Genetic Parameters of Bovine Serum Immunoglobulins

Journal of Dairy Science, 1985
Radial immunodiffusion techniques were used to determine serum concentrations of immunoglobulins G1, G2, M, and A in 1,293 daughters of 282 Holstein-Friesian sires from 31 herds in southwestern Ontario, Canada. Mean serum immunoglobulin concentrations (mg/100 ml) were 2,163, 2,409, 531, and 107 for immunoglobulins G1, G2, M, and A, respectively.
K E, Mazengera, B W, Kennedy, E B, Burnside, B N, Wilkie, J H, Burton   +4 more
openaire   +2 more sources

On the estimation of genetic parameters via variance components [PDF]

Genetics Selection Evolution, 1983
Summary Variance components have been estimated by three methods using two different but overlapping data sets from a dairy cattle breeding scheme. The methods were H method III, MINQUE and a new method proposed by H in 1980. Two different statistical models of grouping sires were considered.
Schneeberger M, Hagger C, Dempfle L
openaire   +4 more sources

Estimation of Genetic Parameters of Reproductive Traits in Holstein Cattle from Southern China

Animals
Reproductive performance is a critical determinant of dairy farm productivity and profitability. This study aimed to estimate genetic parameters for key reproductive traits in Holstein cattle from southern China.
Wenjie Li, Shuwen Xia, Yanming Quan, Yangyang Shen, Weining Li, Kunlin Chen, Zhenjiang An, Yingying Jiang, Zengxiang Pan, Huili Wang   +9 more
doaj   +1 more source

Genetic Association of Test-day Milk Urea Concentration with Milk Yield in Primiparous Holstein Fresian Cows

Scientific Papers Animal Science and Biotechnologies, 2023
The aim of this study was to estimate genetic parameters of milk urea concentration (MUC) and the relationships with milk yield (MY) in the first lactation of Holstein Friesian cows.
Constantin Găvan, Vergil Motorga, Florica Colă, Mihaela Oprea, Florian Drăgan   +4 more
doaj  

Genetic parameters for earnings in Quarter Horse

Genetics and Molecular Research, 2014
In this study, we estimated the heritability (h(2)) of earnings in the Quarter Horse in order to evaluate the inclusion of this trait in breeding programs. Records from 14,754 races of 2443 horses from 1978-2009 were provided by Sorocaba Hippodrome, São Paulo, Brazil.
Silva, A. P. A., Curi, Rogerio Abdallah, Langlois, B., Silva, J. A. H. V.   +3 more
openaire   +5 more sources

Quantitative Genetics of Feed-Efficiency-Related Traits for the Pacific Whiteleg Shrimp Penaeus vannamei in a Plant-Based Diet Environment

Biology
Selecting shrimp strains that perform well on a plant-based diet holds promise for solving the fishmeal (FM) shortage issue, with genetic improvement of feed efficiency (FE) being a key focus. This study compared a plant-based (fishmeal-free) diet with a
Ping Dai, Xiangyan Zhu, Sheng Luan, Juan Sui, Xianhong Meng, Jiawang Cao, Jian Tan, Jie Kong   +7 more
doaj   +1 more source

Genetic variability of the length of postpartum anoestrus in Charolais cows and its relationship with age at puberty

Genetics Selection Evolution, 2000
Fertility records (n = 1 802) were collected from 615 Charolais primiparous and multiparous cows managed in an experimental herd over an 11-year period.
Ménissier François, Krauss Daniel, Renand Gilles, Mialon Marie-Madeleine   +3 more
doaj   +1 more source

Genomic Region Containing Toll-Like Receptor Genes Has a Major Impact on Total IgM Antibodies Including KLH-Binding IgM Natural Antibodies in Chickens

Frontiers in Immunology, 2018
Natural antibodies (NAb) are antigen binding antibodies present in individuals without a previous exposure to this antigen. Keyhole limpet hemocyanin (KLH)-binding NAb levels were previously associated with survival in chickens.
Tom V. L. Berghof, Tom V. L. Berghof, Marleen H. P. W. Visker, Joop A. J. Arts, Henk K. Parmentier, Jan J. van der Poel, Addie L. J. Vereijken, Henk Bovenhuis   +7 more
doaj   +1 more source

Genetic Selection Approach for Semen Characteristics in Thai Native Grandparent Roosters (Pradu Hang Dum) Using Random Regression Test-Day Models and Selection Indices

Animals
The aim of this study was to analyze suitable genetic models and selection indices to estimate the genetic parameters and breeding values of native Thai roosters. A total of 3475 records of seven semen traits (mass movement, semen pH, semen color, volume,
Iin Mulyawati Daryatmo, Jiraporn Juiputta, Vibuntita Chankitisakul, Wuttigrai Boonkum   +3 more
doaj   +1 more source