THE STUDY OF MATERNAL EFFECTS ON ESTIMATION OF HERITABILITIES AND DETERMINATION OF ENVIRONMENTAL FACTORS ON EARLY GROWTH TRAITS IN KERMANISHEEP

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

BAHREINI BEHZADI M.R.; EFTEKHARI SHAHROUDI F.; VAN VLECK L. D.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Journal of Water and Soil Science Year:2005 | Volume: | Issue: Page(s): 203-213

Download Full-Text

Persian Verion

View:

3,232

Download:

Cites:

Information Journal Paper

Title

THE STUDY OF MATERNAL EFFECTS ON ESTIMATION OF HERITABILITIES AND DETERMINATION OF ENVIRONMENTAL FACTORS ON EARLY GROWTH TRAITS IN KERMANISHEEP

Author(s)

BAHREINI BEHZADI M.R. | EFTEKHARI SHAHROUDI F. | VAN VLECK L. D. | Issue Writer Certificate

Keywords

MATERNAL EFFECTQ4

ENVIRONMENTAL FACTORSQ3

GENETIC PARAMETERSQ3

EARLY GROWTH TRAITSQ4

ANIMAL MODELQ3

KERMANI SHEEPQ3

Abstract

Data from the birth weight (BW), the average daily gain from birth to weaning (ADG) and the weaning weight (WW) of 1182, 1099 and 1099 lambs were respectively collected and applied to estimate the MATERNAL EFFECTs on heritabilities as well as on the determination of the ENVIRONMENTAL FACTORS. The data were collected from Shahrbabak Sheep Breeding Research Station within five year, from 1993 to 1998. The effects of the year of birth, the age of the dam and its sex on all the traits were significant The type of birth had no effect on BW but it was significant for the other two traits. Estimates of (co)variance components and GENETIC PARAMETERS were obtained by restricted maximum likelihood, using single and two-trait ANIMAL MODELs. Based on the most appropriate fitted model, direct heritability of BW, ADG and WW were estimated at 0.10±0.06, 0.21±0.08 and 0.22±0.09, respectively. The maternal heritability for the three traits was also estimated at 0.27±0.04, 0.15±0.05 and 0.19±0.05, respectively. Direct genetic and phenotypic correlations between BW and ADG; BW and WW; ADG and WW were estimated at 0.85 and 0.41; 0.82 and 0.48 and 0.99 and 0.99, respectively. Ignoring maternal effects in ANIMAL MODEL caused overestimation of direct heritability. Thus MATERNAL EFFECTs are significant sources of variation for EARLY GROWTH TRAITS and their ignorance in the ANIMAL MODEL causes inaccurate genetic evaluation of the lambs.

Cites

ESTIMATES OF GENETIC PARAMETERS FOR PREWEANING GROWTH TRAITS IN KERMANI SHEEP

References

Cite

APA: Copy

BAHREINI BEHZADI, M.R., EFTEKHARI SHAHROUDI, F., & VAN VLECK, L. D.. (2005). THE STUDY OF MATERNAL EFFECTS ON ESTIMATION OF HERITABILITIES AND DETERMINATION OF ENVIRONMENTAL FACTORS ON EARLY GROWTH TRAITS IN KERMANISHEEP. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 9(1), 203-213. SID. https://sid.ir/paper/361930/en

Vancouver: Copy

BAHREINI BEHZADI M.R., EFTEKHARI SHAHROUDI F., VAN VLECK L. D.. THE STUDY OF MATERNAL EFFECTS ON ESTIMATION OF HERITABILITIES AND DETERMINATION OF ENVIRONMENTAL FACTORS ON EARLY GROWTH TRAITS IN KERMANISHEEP. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2005;9(1):203-213. Available from: https://sid.ir/paper/361930/en

IEEE: Copy

M.R. BAHREINI BEHZADI, F. EFTEKHARI SHAHROUDI, and L. D. VAN VLECK, “THE STUDY OF MATERNAL EFFECTS ON ESTIMATION OF HERITABILITIES AND DETERMINATION OF ENVIRONMENTAL FACTORS ON EARLY GROWTH TRAITS IN KERMANISHEEP,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 9, no. 1, pp. 203–213, 2005, [Online]. Available: https://sid.ir/paper/361930/en

Related Journal Papers