Results 51 to 60 of about 9,447 (188)

Analysis of Levels of Inbreeding and Inbreeding Depression in Jersey Cattle

open access: yesJournal of Dairy Science, 1992
A pedigree file of 157,015 male and female Jersey cattle (born after 1955) from the Canadian herdbooks was investigated for the occurrence of inbreeding. A large proportion of Jersey bulls and cows were inbred (32.4 and 36.3% for bulls and cows, respectively). However, average inbreeding coefficients of these inbred cows and of all cows were low. First
F, Miglior, B, Szkotnicki, E B, Burnside
openaire   +2 more sources

Inbreeding depression in a parasitoid wasp with single-locus complementary sex determination. [PDF]

open access: yesPLoS ONE, 2014
Inbreeding and inbreeding depression are key processes in small or isolated populations and are therefore central concerns for the management of threatened or (re)introduced organisms.
Chloé Vayssade   +5 more
doaj   +1 more source

Museomics Deciphers the Phylogeographic Differentiation and Conservation Status of a Montane Pheasant

open access: yesIntegrative Zoology, EarlyView.
Museum specimens provide a rich source of historical DNA, enabling insights into phylogenetic relationships and demographic history of the endangered Koklass Pheasant. Our findings uncovered a previously unrecognized population in Guizhou province and highlighted elevated extinction risk in populations from Anhui province and Southern China, informing ...
Zhiyong Jiang   +9 more
wiley   +1 more source

The Size, Demography, and Distribution of Cambodia's Largest Elephant Population Revealed Using Traditional Genetic Tools and a Novel SNP Panel

open access: yesIntegrative Zoology, EarlyView.
Asian elephant population parameters were assessed using microsatellite, SNP, and sex determination DNA markers. This represents one of the first studies in mainland Asia to demonstrate that integrating microsatellite and SNP data enhances genotyping success from degraded fecal samples, increases the number of useable samples and markers, and ...
Rachel Crouthers   +5 more
wiley   +1 more source

Optimizing genetic diversity in Australian Holsteins and Jerseys: A comparative analysis of whole-genome and regional inbreeding depression effects

open access: yesJournal of Dairy Science
: Homozygosity, which can arise from several genetic mechanisms including inbreeding, is frequently observed in the offspring of related parents. This inbreeding can lead to a reduced performance, owing to a phenomenon known as inbreeding depression ...
B.A. Scott   +5 more
doaj   +1 more source

Effect of recent and ancient inbreeding on production and fertility traits in Canadian Holsteins

open access: yesBMC Genomics, 2020
Background Phenotypic performances of livestock animals decline with increasing levels of inbreeding, however, the noticeable decline known as inbreeding depression, may not be due only to the total level of inbreeding, but rather could be distinctly ...
Bayode O. Makanjuola   +4 more
doaj   +1 more source

Inbreeding evaluation using microsatellite confirmed inbreeding depression in growth in the Fenneropenaeus chinensis natural population

open access: yesFrontiers in Genetics, 2023
Understanding inbreeding depressions (IBDs), the effect on the phenotypic performance of inbreeding, is of major importance for evolution and conservation genetics.
Ding Lyu   +7 more
doaj   +1 more source

Burrow Persistence and Spatial Distribution of Federally and State‐Protected Gopher Tortoise (Gopherus polyphemus) Populations in Southwest Alabama

open access: yesAnimal Conservation, EarlyView.
The gopher tortoise (Gopherus polyphemus), a keystone species and ecosystem engineer, has declined by ~80% over the past century due to primarily habitat loss. In a 28‐year resurvey of federally protected Mobile County and state‐protected Baldwin County, we found tortoise populations persisted at ~59% and ~31% of sites, respectively, with significant ...
Robin B. Lloyd Jr.   +4 more
wiley   +1 more source

Inferences About Inbreeding Depression Based on Changes of the Inbreeding Coefficient [PDF]

open access: yesEvolution, 1990
In a mixed-mating population, the fitness of selfed individuals, relative to outcrossed individuals, can be estimated from observed changes of the inbreeding coefficient F. In general, three measurements of F, or two measurements of F and one of the selfing rate, spanning two generations are needed.
openaire   +2 more sources

Inbreeding depression for producer-recorded udder, metabolic, and reproductive diseases in US dairy cattle

open access: yesJournal of Dairy Science
: This study leveraged a growing dataset of producer-recorded phenotypes for mastitis, reproductive diseases (metritis and retained placenta), and metabolic diseases (ketosis, milk fever, and displaced abomasum) to investigate the potential presence of ...
Emmanuel A. Lozada-Soto   +7 more
doaj   +1 more source

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