ESTIMATES OF GENETIC PARAMETERS FOR PREWEANING GROWTH TRAITS IN KERMANI SHEEP

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.

BARAZANDEH A.; VAEZ TORSHIZI R.; SAFI JAHANSHAHI A.

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

Journal Paper

Paper Information

Journal: Year:2008 | Volume:13 | Issue:2 Page(s): 349-355

Download Full-Text

Persian Verion

View:

1,189

Download:

Cites:

Information Journal Paper

Title

ESTIMATES OF GENETIC PARAMETERS FOR PREWEANING GROWTH TRAITS IN KERMANI SHEEP

Author(s)

BARAZANDEH A. | VAEZ TORSHIZI R. | SAFI JAHANSHAHI A. | Issue Writer Certificate

Keywords

MATERNAL EFFECTSQ3

ANIMAL MODELQ4

REMLQ3

EARLY GROWTH TRAITSQ3

KERMANI SHEEPQ2

Abstract

Data on 1253 records of Kemani lambs, collected from 1993 to 2004 by the KERMANI SHEEP Breeding and Rearing Station located in Sharebabak, were used to estimate genetic parameters of birth weight, weaning weight and average daily gain from birth to weaning.Variance and covariance components and genetic parameters were obtained with six different ANIMAL MODELs using Restricted Maximum Likelihood procedure.Likelihood ratio tests were conducted to determine the most appropriate model for each trait. Genetic and phenotypic correlations were estimated through multivariate analysis using the most appropriate model obtained from univariate analysis.Comparison of different ANIMAL MODELs indicated that maternal additive genetic effects was important for birth weight and maternal permanent environmental effects for weaning weight and average daily gain from birth to weaning.Estimates of direct additive genetic correlations were positive and moderate to high, ranging from 0.39 (between birth weight and average daily gain from birth to weaning) to 1 (between weaning weight and average daily gain from birth to weaning). The corresponding estimates for phenotypic correlations were lower than the genetic correlations.The results of this study indicated that the MATERNAL EFFECTS were important sources of variation for the EARLY GROWTH TRAITS of KERMANI SHEEP breed and thus their ignorance will be led to biased estimates of direct additive genetic variance and their corresponding heritabilities.

Cites

No record.

References

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

Cite

APA: Copy

BARAZANDEH, A., VAEZ TORSHIZI, R., & SAFI JAHANSHAHI, A.. (2008). ESTIMATES OF GENETIC PARAMETERS FOR PREWEANING GROWTH TRAITS IN KERMANI SHEEP. JOURNAL OF AGRICULTURAL SCIENCES, 13(2), 349-355. SID. https://sid.ir/paper/7613/en

Vancouver: Copy

BARAZANDEH A., VAEZ TORSHIZI R., SAFI JAHANSHAHI A.. ESTIMATES OF GENETIC PARAMETERS FOR PREWEANING GROWTH TRAITS IN KERMANI SHEEP. JOURNAL OF AGRICULTURAL SCIENCES[Internet]. 2008;13(2):349-355. Available from: https://sid.ir/paper/7613/en

IEEE: Copy

A. BARAZANDEH, R. VAEZ TORSHIZI, and A. SAFI JAHANSHAHI, “ESTIMATES OF GENETIC PARAMETERS FOR PREWEANING GROWTH TRAITS IN KERMANI SHEEP,” JOURNAL OF AGRICULTURAL SCIENCES, vol. 13, no. 2, pp. 349–355, 2008, [Online]. Available: https://sid.ir/paper/7613/en

Related Journal Papers