Results 11 to 20 of about 54,642 (306)

The Population History of Domestic Sheep Revealed by Paleogenomes

open access: yesMolecular Biology and Evolution
Abstract Sheep was one of the first domesticated animals in Neolithic West Eurasia. The zooarchaeological record suggests that domestication first took place in Southwest Asia, although much remains unresolved about the precise location(s) and timing(s) of earliest domestication, or the post-domestication history of sheep.
Damla Kaptan   +38 more
core   +14 more sources

Spatial Associations of Livestock Guardian Dogs and Domestic Sheep

open access: yesHuman-Wildlife Interactions, 2019
Livestock guardian dogs (Canis lupus familiaris; LGDs) have been used for centuries to protect livestock, primarily domestic sheep (Ovis aries), from depredation by large carnivores.
Julie Young   +2 more
doaj   +3 more sources

Genetic diversity of domestic sheep [PDF]

open access: yes, 2017
Domestic sheep are raised for meat, milk and fibre production and are found all around the world in many types of environments. Sheep have been shown to be genetically diverse but this genetic diversity has not been fully described: there are still many sheep populations which have not yet been studied.
Rochus, Christina Marie
openaire   +2 more sources

Mitochondrial DNA diversity of modern, ancient and wild sheep(Ovis gmelinii anatolica) from Turkey: new insights on the evolutionary history of sheep. [PDF]

open access: yesPLoS ONE, 2013
In the present study, to contribute to the understanding of the evolutionary history of sheep, the mitochondrial (mt) DNA polymorphisms occurring in modern Turkish native domestic (n = 628), modern wild (Ovis gmelinii anatolica) (n = 30) and ancient ...
Sevgin Demirci   +8 more
doaj   +1 more source

Evidence for independent domestication of sheep mtDNA lineage A in India and introduction of lineage B through Arabian sea route

open access: yesScientific Reports, 2021
India ranks the second in the world in terms of its sheep population with approximately 74.26 million represented by 44 well-described breeds in addition to several non-descript populations.
Ranganathan Kamalakkannan   +8 more
doaj   +1 more source

Behavioural Indicators of Intra- and Inter-Specific Competition: Sheep Co-Grazing with Guanaco in the Patagonian Steppe

open access: yesAnimals, 2021
In extensive livestock production, high densities may inhibit regulation processes, maintaining high levels of intraspecific competition over time. During competition, individuals typically modify their behaviours, particularly feeding and bite rates ...
Tomás Fernández   +5 more
doaj   +1 more source

Rumen protozoa in South African sheep with a summary of the worldwide distribution of sheep protozoa

open access: yesOnderstepoort Journal of Veterinary Research, 2011
Protozoa species were identified in rumen contents of four domestic sheep (Ovis aries) from South Africa. All animals were fed a forage diet which consisted of 50% lucerne and 50% teff hay.
Dirk Booyse, Burk A. Dehority
doaj   +1 more source

First Report of Chlamydia Seroprevalence and Risk Factors in Domestic Black-Boned Sheep and Goats in China

open access: yesFrontiers in Veterinary Science, 2020
The Gram-negative bacteria of the genus Chlamydia cause a wide range of diseases in humans and animals. The seroprevalence of Chlamydia in domestic black-boned sheep and goats in China is unknown.
Li-Xiu Sun   +6 more
doaj   +1 more source

Incorporating foray behavior into models estimating contact risk between bighorn sheep and areas occupied by domestic sheep

open access: yesWildlife Society Bulletin, 2014
Respiratory disease epidemics are considered a primary factor limiting bighorn sheep (Ovis canadensis) populations in most of the western United States. Diverse sources of evidence indicate that domestic sheep harbor pathogens that cause fatal pneumonia ...
Joshua M. O'brien   +3 more
doaj   +1 more source

Deep Genome Resequencing Reveals Artificial and Natural Selection for Visual Deterioration, Plateau Adaptability and High Prolificacy in Chinese Domestic Sheep

open access: yesFrontiers in Genetics, 2019
Sheep were one of the earliest domesticated animals. Both artificial and natural selection during domestication has resulted in remarkable changes in behavioral, physiological, and morphological phenotypes; however, the genetic mechanisms underpinning ...
Weimin Wang   +13 more
doaj   +1 more source

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