GENETIC VARIABILITY AND POPULATION STRUCTURE OF RAEINI CASHMERE GOATS DETERMINED BY PEDIGREE ANALYSIS

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MOKHTARI M.S.; MOGHBELI DAMANEH M.; GUTIERREZ J.P.

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Journal: JOURNAL OF LIVESTOCK SCIENCE AND TECHNOLOGIES Year:2017 | Volume:5 | Issue:1 Page(s): 43-50

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Title

GENETIC VARIABILITY AND POPULATION STRUCTURE OF RAEINI CASHMERE GOATS DETERMINED BY PEDIGREE ANALYSIS

Author(s)

MOKHTARI M.S. | MOGHBELI DAMANEH M. | GUTIERREZ J.P. | Issue Writer Certificate

Keywords

GENEALOGICAL PARAMETERS

INBREEDING

EFFECTIVE POPULATION SIZE

GOAT

Abstract

Pedigree information collected from 1979 to 2012 were used to study the genetic variability and population structure of Raeini Cashmere GOATs, taking kids born from 2009 to 2012 into account as the reference population. The mean INBREEDING coefficients in the whole and inbred populations were computed to be 0.04% and 4.41%, respectively. Considering the reference population, the average INBREEDING coefficient and average relatedness were 0.14 % and 0.11%, respectively. The mean of generation interval, computed from four gametic pathways (sire-son, sire-daughter, dam-son and dam-daughter), was 3.72 years, with a longer interval from dam-progeny pathways relative to sire-progeny ones. In the reference population, the average equivalent complete generation, as a measure of pedigree completeness, was 1.25. The EFFECTIVE POPULATION SIZEs estimated from the individual rate in coancestry and from the individual increase in INBREEDING were 332 and 229, respec-tively. The effective numbers of founders (fe) and the effective numbers of ancestors (fa) were estimated at 240 and 137, respectively. Approximately, 50% of the total genetic variations were explained by the first 57 influential ancestors, with a maximum individual contribution of 3.94%. The ratio of fe to fa, as measure of bottleneck, was 1.75. The results revealed the evidences for occurrence of bottlenecks in the population, mainly because of unbalanced contribution of breeding animals to the gene pool of the studied population of Raeini Cashmere GOAT.

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APA: Copy

MOKHTARI, M.S., MOGHBELI DAMANEH, M., & GUTIERREZ, J.P.. (2017). GENETIC VARIABILITY AND POPULATION STRUCTURE OF RAEINI CASHMERE GOATS DETERMINED BY PEDIGREE ANALYSIS. JOURNAL OF LIVESTOCK SCIENCE AND TECHNOLOGIES, 5(1), 43-50. SID. https://sid.ir/paper/265589/en

Vancouver: Copy

MOKHTARI M.S., MOGHBELI DAMANEH M., GUTIERREZ J.P.. GENETIC VARIABILITY AND POPULATION STRUCTURE OF RAEINI CASHMERE GOATS DETERMINED BY PEDIGREE ANALYSIS. JOURNAL OF LIVESTOCK SCIENCE AND TECHNOLOGIES[Internet]. 2017;5(1):43-50. Available from: https://sid.ir/paper/265589/en

IEEE: Copy

M.S. MOKHTARI, M. MOGHBELI DAMANEH, and J.P. GUTIERREZ, “GENETIC VARIABILITY AND POPULATION STRUCTURE OF RAEINI CASHMERE GOATS DETERMINED BY PEDIGREE ANALYSIS,” JOURNAL OF LIVESTOCK SCIENCE AND TECHNOLOGIES, vol. 5, no. 1, pp. 43–50, 2017, [Online]. Available: https://sid.ir/paper/265589/en

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