منابع مشابه
Resolving the evolution of extant and extinct ruminants with high-throughput phylogenomics.
The Pecorans (higher ruminants) are believed to have rapidly speciated in the Mid-Eocene, resulting in five distinct extant families: Antilocapridae, Giraffidae, Moschidae, Cervidae, and Bovidae. Due to the rapid radiation, the Pecoran phylogeny has proven difficult to resolve, and 11 of the 15 possible rooted phylogenies describing ancestral relationships among the Antilocapridae, Giraffidae, ...
متن کاملSmall Ruminants
END MARKET OPPORTUNITIES MARKET OVERVIEW Throughout Africa and in humid West Africa in particular, small ruminants must be considered primarily as sources of meat and meat products. There is ample evidence from several African regions that demand for meat is strong and increasing. This reflects greater urbanization and associated higher incomes, which have led to large domestic and internationa...
متن کاملResolving the relationships of resolving enzymes.
H junction-resolving enzymes are metal ion-dependent endonucleases that recognize and cleave four-way DNA junctions arising during recombination (reviewed in ref. 1). Examples include RuvC in eubacteria (2, 3), Cce1 in fungal mitochondria (4), Hjc in archaea (5, 6), and three enzymes in bacteriophage [RusA (7), T4 endonuclease VII (8), and T7 endonuclease I (9, 10)]. These six nucleases display...
متن کاملNutrition of ruminants
Developing production systems for ruminants using tropical feed resources requires an understanding of the relative roles and nutrient needs of the two-compartment system represented by the symbiotic relationship between rumen micro-organisms and the host animal. Fibre-rich, low-protein forages and crop residues are the most abundant and appropriate feeds for ruminants in the tropics. Strategie...
متن کاملFeed resources for ruminants
Treatment with urea, feeding of multi-nutritional blocks and high-offer level feeding are the interventions most likely to increase the potential nutritive value of fibrous crop residues. The exploitation of this potential will be determined by the level of supplementation with "bypass" nutrients, especially protein. The optimum level of supplementation will depend on the cost of the supplement...
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ژورنال
عنوان ژورنال: Science
سال: 2019
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.aay2379