Selection with inbreeding control in simulated young bull schemes for local dairy cattle breeds
نویسندگان
چکیده
منابع مشابه
Inbreeding in Danish dairy cattle breeds.
The purpose of this study was to monitor current and predict future rates of inbreeding in the Danish dairy breeds. Calves born from 1999 until 2003 and registered as Danish Holstein (1,883,983), Danish Jersey (336,966), or Danish Red (261,047) were reference populations. Average complete generation equivalent was approximately 7. For calves born in 2003, average inbreeding was 3.9, 3.4, and 1....
متن کاملInbreeding in Dairy Cattle
Inbreeding is defined as half of the genetic relationship between an animal’s parents. For example, the offspring from a mating of animals A and B, which have the same father, will have 12.5 percent inbreeding, because the genetic relationship between A and B is 25 percent. Statistical methods to select the best sires of each generation have been developed, making it feasible to achieve any pos...
متن کاملGenomic inbreeding estimation in small populations: evaluation of runs of homozygosity in three local dairy cattle breeds.
In the local breeds with small population size, one of the most important problems is the increase of inbreeding coefficient (F). High levels of inbreeding lead to reduced genetic diversity and inbreeding depression. The availability of high-density single nucleotide polymorphism (SNP) arrays has facilitated the quantification of F by genomic markers in farm animals. Runs of homozygosity (ROH) ...
متن کاملIdentification of selection signatures in cattle breeds selected for dairy production.
The genomics revolution has spurred the undertaking of HapMap studies of numerous species, allowing for population genomics to increase the understanding of how selection has created genetic differences between subspecies populations. The objectives of this study were to (1) develop an approach to detect signatures of selection in subsets of phenotypically similar breeds of livestock by compari...
متن کاملIdentification of Selection Signatures in Cattle Breeds Selected for Dairy Production 1 2
Identification of Selection Signatures in Cattle Breeds Selected for Dairy Production 1 2 Alessandra Stella, Paolo Ajmone-Marsan, Barbara Lazzari and Paul Boettcher 3 Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche, Milan, Italy 4 20133 5 Istituto di Zootecnica, Università Cattolica del Sacro Cuore, Piacenza, Italy 29100 6 Parco Tecnologico Padano, Lodi, Italy 2...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2014
ISSN: 0022-0302
DOI: 10.3168/jds.2013-7184