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| Herold, Pera; Bürstel, Daniela; Domes, Ursula; Spengler, Dieter; Mendel, Christian; Wenzler, Johann-Georg; Rogg, Rudolf; Hamann, Henning; Valle Zárate, Anne. |
| Within organic livestock farming, the use of AI versus natural mating is under steady discussion. However, no special organic breeding programs without AI are set in place so far. The present study takes goat breeding in Germany as an example to show how an organic breeding program without biotechnology could be organised. As basis, breeding planning on different breeding plans is carried out: the breeding program in place, a breeding program with buck rotation within “buck circles” and a breeding program with AI are evaluated. It can be shown that within smaller populations (here: goat breeding in South Germany) a buck rotation scheme with progeny testing is superior in genetic gain than the actual and a breeding program based on AI. In a second step, in... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding and genetics. |
| Ano: 2013 |
URL: http://orgprints.org/21338/1/21338_Herold.pdf |
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| Herold, Pera; Keller, Monika; Valle Zárate, Anne. |
| Dairy goat keeping is a growing business in Germany since the 1980ies. So far, there is little knowledge on the structure of these goat farms and their husbandry and breed-ing management. Aim of this study was to get an overview on dairy goat husbandry and breeding in Baden-Württemberg and Bavaria. For this, a structured questionnaire was developed to investigate operational characteristics and basic data on dairy goat husbandry and breeding. The addresses of commercial dairy goat farms where ob-tained from goat breeders associations. The feedback from goat farmers was very high (94%). Most dairy goat farms are organic farms and belong to specific certifying organisations. Most farms (87%) farm less than 50 ha of agricultural land and keep between 60 and... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Sheep and goats. |
| Ano: 2007 |
URL: http://orgprints.org/9420/1/9420_Herold_Poster.pdf |
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| Kerp, M.; Herold, Pera. |
| Different traits have been defined to describe the performance of dairy animals during their lifetime: productive lifetime, lifetime production, life efficiency and contribution trouble-free cows that reach the performance optimum of lactations. This continuous performance should be on basis of good roughage feed efficiency. Within the present total merit indices it is not possible to determine which cow fulfils these demands on longevity, health, performance and cost reduction. Further research is necessary to investigate the suitability of this trait for breeding value estimation or if the calculation of an index may be more useful. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Beef cattle; Breeding and genetics. |
| Ano: 2017 |
URL: http://orgprints.org/31782/1/Lebensleistung%20tierz%C3%BCchterisch%20abbilden.pdf |
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