EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

The use of inbreeding for obtaining dairy bulls






Osobennosti plemennoi raboty s sel' skokhozyaistvennymi zhivotnymi: 51-54

The use of inbreeding for obtaining dairy bulls

For outbred and inbred progeny-tested bulls at a farm in the Moscow region of the former USSR in 1980-87, data are tabulated on body weight, body measurements, semen characters, CR achieved and milk yield. There were 15-24 and 232-335 bulls per trait in the 2 groups respectively.


Accession: 002530375



Related references

Flade D.; Zeller K., 1988: Changes in inbreeding intensities and effect of different degrees of inbreeding on body weight and semen production in black pied dairy bulls. Inbreeding intensities were studied in 17,796 young bulls of Black-Pied dairy breed (born between 1974 and 1985) from various bull raising stations. The results revealed that about 9% of the bulls were almost only moderately inbred, although the p...

Flade, D.; Zeller, K., 1988: Changes in inbreeding intensity and effect of different degrees of inbreeding on body weight and semen production of German Black Pied Dairy bulls. Data on 17 795 young bulls born between 1974 and 1985 were analysed. 1564 (8.9%) were inbred: 278 (1.6%) had an inbreeding coefficient of 12.5%, 564 (3.2%) were 6.25% and 722 (4.1%) were 3.125% inbred. The overall av. coefficient was 0.53%, and in...

Weigel, K.A., 2001: Relationships and inbreeding among young dairy bulls entering AI progeny test programs. Journal of Dairy Science 84(Supplement 1): 412

Flade, E.; Zeller, K., 1988: Effect of a high degree of inbreeding (25%) on body weight and semen production of young German Black Pied Dairy bulls. The performance was compared of 21 inbred and 17 non-inbred (control) German Black Pied Dairy bulls. There were differences (all P<0.01) between inbred and control bulls in body weight at 365 days (403.8 vs. 430.8 kg), daily gain during the fat...

Yin, T.; Wensch-Dorendorf, M.; Simianer, H.; Swalve, H.H.; König, S., 2015: Assessing the impact of natural service bulls and genotype by environment interactions on genetic gain and inbreeding in organic dairy cattle genomic breeding programs. The objective of the present study was to compare genetic gain and inbreeding coefficients of dairy cattle in organic breeding program designs by applying stochastic simulations. Evaluated breeding strategies were: (i) selecting bulls from convent...

Hanset, R., 1968: The problem of inbreeding in planned artificial insemination. Inbreeding and relationship among A.I. bulls of the Central and Upper Belgian breed. After general consideration of the less desirable aspects of inbreeding likely to result from A.I., the situation within the Central and Upper Belgian breeding area is investigated. The bulls used at 5 provincial A.I. centres in 1957, 1960 and 196...

Hanset R., 1968: Problem of inbreeding within the framework of artificial insemination inbreeding and relationship of artificially inseminated bulls in the bovine race of central and upper belgium. Annales de Medecine Veterinaire 112(1): 3-24

Flade D.; Zeller K., 1986: Studies on the influence of moderate inbreeding on inbreeding conditions culling ratio and causes the development of body mass and the sperm production and sperm quality of young bulls. The inbreeding analysis of 13,076 young bulls from the 1974-1982 age classes from the East German Central Bull Breeding Station yielded a mean inbreeding coefficient of only 0.5% (inbreeding rate = 0.25%). In 93 (F = 12.5%) and 239 (F = 6.25%) inb...

Panetto, J.C.C.; Gutiérrez, J.P.; Ferraz, J.B.S.; Cunha, D.G.; Golden, B.L., 2010: Assessment of inbreeding depression in a Guzerat dairy herd: effects of individual increase in inbreeding coefficients on production and reproduction. Influences of inbreeding on daily milk yield (DMY), age at first calving (AFC), and calving intervals (CI) were determined on a highly inbred zebu dairy subpopulation of the Guzerat breed. Variance components were estimated using animal models in...

Vasconcelos, J.; Martins, A.; Ferreira, A.; Pinto, S.; Carvalheira, J., 2005: Inbreeding and inbreeding depression in Portuguese dairy cattle. The Holstein national pedigree file with 1 197 384 animals was investigated for the occurrence of inbreeding. 40% of the population in this pedigree file had at least one missing parent. The proportion of inbred animals was 8.6% with an average in...