| 1. |
- Dürr, João, et al.
(författare)
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Interbull survey on parentage verification
- 2011
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Ingår i: Bulletin / International Bull Evaluation Service. - 1011-6079. ; 44, s. xiv-xvii
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 2. |
- Dürr, João, et al.
(författare)
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Interbull survey on sequencing of cattle
- 2011
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Ingår i: Bulletin / International Bull Evaluation Service. - 1011-6079. ; 44, s. xviii-xxii
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 3. |
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| 4. |
- Forabosco, Flavio, et al.
(författare)
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Evaluation of genetic variation in the international Brown Swiss population
- 2013
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Ingår i: Animal. - 1751-7311 .- 1751-732X. ; 7, s. 1060-1066
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Tidskriftsartikel (refereegranskat)abstract
- The international Brown Swiss cattle population pedigree was studied to measure genetic variations and to identify the most influential animals. Twenty-two countries provided pedigree information on 71 497 Brown Swiss bulls used for artificial insemination (AI). The total number of animals with the pedigree is 181 094. The mean inbreeding coefficient for the pedigree population was 0.77%. There was, in most cases, an increase in the mean inbreeding coefficient, with the highest value at 2.89% during the last 5-year period (2000 to 2004). The mean average relatedness for the pedigree population was 1.1%. The effective population size in 2004 was 204. There was notable variation between average generation intervals for the four parental pathways. The longest average generation interval, at 8.73 years, was observed in the sire son pathway. The average generation interval for the whole population was 6.53 years. Most genetically influential individuals were sires. The highest contributing founder was a sire with a 3.22% contribution, and the highest contributing founder dam made a contribution of 1.75%. The effective number of founders and the effective number of ancestors were 141 and 88, respectively. The study showed that genetic variation within the pedigree population has been decreasing over recent years. Increasing the number of AI bulls with a low individual coefficient of inbreeding could help to maintain a good level of genetic variation in the Brown Swiss population.
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| 5. |
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| 6. |
- Jorjani, Hossein, et al.
(författare)
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Joint genomic evaluation of BSW populations
- 2011
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Ingår i: Bulletin / International Bull Evaluation Service. - 1011-6079. ; 41, s. 8-13
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 7. |
- Lundgren, Helena, et al.
(författare)
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Genetic analysis of reproductive performance in Landrace sows and its correlation to piglet growth
- 2010
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Ingår i: Livestock Science. - : Elsevier BV. - 1871-1413 .- 1878-0490. ; 128, s. 173-178
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to investigate the reproductive performance of sows, including the interval from weaning to service after 1st litter and litter size in the following (2nd) parity, as well as the direct and maternal genetic effects of piglet growth on these reproduction traits. Data on 15 946 Norwegian Landrace sows' 1st and 2nd parity, and on 106,962 piglets born in 11,323 1st parity litters were included in the analyses, in total, five traits were analysed. Weaning-to-service interval was based on a 1- to 7-day interval (WS17) or a transformed 1- to 50-day interval (WS150). A third reproduction trait was total number of piglets born in 2nd parity (NBTnext). Piglet weight was included in the analyses, either as average piglet weight in the litter at 3 weeks of age (meanW3) or as individual piglet weight gain during the first 3 weeks of life (IWG03). Genetic parameters were estimated with animal models, including both direct and maternal effects for IWG03. Heritability estimates for WS17, WS150 and NBTnext were 0.08, 0.03 and 0.09 respectively. For meanW3. the heritability estimate was 0.21. For IWG03, the direct and maternal heritability estimates were 0.15 and 0.10 respectively. Negative and unfavourable genetic correlations were estimated between meanW3 and NBTnext (r(g) = -0.37), and between IWG03(maternal) and NBTnext (r(g) = -0.39). The ability to raise fast growing, heavy piglets seems to have an unfavorable effect on total number born in next litter but not on the weaning-to-service interval. (C) 2009 Elsevier B.V. All rights reserved.
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| 8. |
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| 9. |
- Lundgren, Helena, et al.
(författare)
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Shoulder sores are inherited
- 2009
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Ingår i: Book of abstracts of the ... Annual meeting of the European Association for Animal Production. - 1382-6077. ; 15, s. 481-
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 10. |
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