Results 161 to 170 of about 137,178 (218)
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Intermittent breeding is associated with breeding group turnover in a cooperatively breeding bird
Oecologia, 2020Intermittent breeding, in which an adult skips a breeding opportunity, can represent a non-adaptive constraint or an adaptive response to the tradeoff between current and future reproduction. In group-living animals, the social group may also affect the frequency of reproduction, but this possibility has received little attention.
Maria G, Smith, Christina, Riehl
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2018
In this chapter we discuss the history of the breeding of domesticated animals and how this practice produced varieties of animals with ‘breeding’, and that since the late-eighteenth century have been termed ‘breeds’. We consider the evolution of ideas on selective breeding through the nineteenth century and end with an assessment of the impact of the ...
Worboys, Michael +2 more
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In this chapter we discuss the history of the breeding of domesticated animals and how this practice produced varieties of animals with ‘breeding’, and that since the late-eighteenth century have been termed ‘breeds’. We consider the evolution of ideas on selective breeding through the nineteenth century and end with an assessment of the impact of the ...
Worboys, Michael +2 more
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BREEDS COMPOSITION IN THE BREEDING MEAT CATTLE BREEDING IN RUSSIA
Molochnoe i miasnoe skotovodstvo, 2021Изучен породный состав и численность племенного скота мясного направления продуктивности в Российской Федерации. На долю мясных пород в мире приходится 40% от всего поголовья крупного рогатого скота. В России специализированное мясное скотоводство как самостоятельную отрасль животноводства начали создавать в начале 30-х годов прошлого века.
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Acta agriculturae Slovenica. Suplement, 2001
Definitions of the term breed differ and are usually very general. They do not include any objective measurement to undoubtedly define any group of domestic animals as a breed. Also information on the origin of breeds is often very superficial; and data on the origin of the Lipizzan horse presented in the article prove that.
Andrej ŠALEHAR +3 more
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Definitions of the term breed differ and are usually very general. They do not include any objective measurement to undoubtedly define any group of domestic animals as a breed. Also information on the origin of breeds is often very superficial; and data on the origin of the Lipizzan horse presented in the article prove that.
Andrej ŠALEHAR +3 more
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, 2018 Abstract This chapter describes the main and minor cultivars, as well as other species and botanical varieties, of pineapple. The genetics and breeding system, including cytogenetics, selection, and rogueing, are discussed. Considerations in hand pollination, seed handling, germination and nursery management are also mentioned.
Sanewski, G. M. +2 more
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To breed, or not to breed? Predation risk induces breeding suppression in common voles
Oecologia, 2012Breeding suppression hypothesis (BSH) predicts that, in several vole species, females will suppress breeding in response to high risk of mustelid predation; compared to breeding females, suppressing females would gain higher chances of survival. Seminal evidence for BSH was obtained in the laboratory, but attempts to replicate breeding suppression ...
Jochym, M., Halle, S.
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Trends in Plant Science, 2003
Breeding by Design is a concept that aims to control all allelic variation for all genes of agronomic importance. This concept can be achieved through a combination of precise genetic mapping, high-resolution chromosome haplotyping and extensive phenotyping. Thanks to marker technology, software tools and the know-how available today, this goal can now
Johan D, Peleman +1 more
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Breeding by Design is a concept that aims to control all allelic variation for all genes of agronomic importance. This concept can be achieved through a combination of precise genetic mapping, high-resolution chromosome haplotyping and extensive phenotyping. Thanks to marker technology, software tools and the know-how available today, this goal can now
Johan D, Peleman +1 more
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Science, 2014
I read with interest the In Depth story “Racing for disaster?” (A. Gibbons, 13 June, p. [1213][1]) on breeding thoroughbreds for speed, and the concerns about inbreeding and the resulting shrinkage of the gene pool. As Gibbons points out, such selection for speed generally involves putting 3-year-old stallions out to stud after winning one or more high-
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I read with interest the In Depth story “Racing for disaster?” (A. Gibbons, 13 June, p. [1213][1]) on breeding thoroughbreds for speed, and the concerns about inbreeding and the resulting shrinkage of the gene pool. As Gibbons points out, such selection for speed generally involves putting 3-year-old stallions out to stud after winning one or more high-
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2018
Abstract This chaptr focuses on the achievements of tomato breeding in the past century and the developments in fundamental and applied tomato research, breeding goals and the importance of biotechnology in the development of transgenic lines.
van Heusden, S., Lindhout, P.
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Abstract This chaptr focuses on the achievements of tomato breeding in the past century and the developments in fundamental and applied tomato research, breeding goals and the importance of biotechnology in the development of transgenic lines.
van Heusden, S., Lindhout, P.
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2008
The olive (Olea europaea L.) is, at the same time, one of the most ancient domesticated fruit trees and the most extensively cultivated fruit crop in the world, covering an area of about 7.5 million hectares. The recent diffusion of olive outside its traditional area of cultivation, the Mediterranean basin, together with a continu- ous trend in the ...
Andrea Fabbri +2 more
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The olive (Olea europaea L.) is, at the same time, one of the most ancient domesticated fruit trees and the most extensively cultivated fruit crop in the world, covering an area of about 7.5 million hectares. The recent diffusion of olive outside its traditional area of cultivation, the Mediterranean basin, together with a continu- ous trend in the ...
Andrea Fabbri +2 more
openaire +3 more sources