COMPARISON OF PROGENY’S PRODUCTION PERFORMANCE FROM INTERNAL AND EXTERNAL HOLSTEIN BULLS IN DIFFERENT CLIMATIC CONDITIONS OF IRAN

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.

EGHBALSAIED SH.; MORADI SHAHRBABAK M.; MIRAEI ASHTIANI S.R.

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

Journal Paper

Paper Information

Journal: JOURNAL OF RESEARCH IN AGRICULTURAL SCIENCE Year:2009 | Volume:5 | Issue:1 Page(s): 113-121

Download Full-Text

Persian Verion

View:

1,743

Download:

Cites:

Information Journal Paper

Title

COMPARISON OF PROGENY’S PRODUCTION PERFORMANCE FROM INTERNAL AND EXTERNAL HOLSTEIN BULLS IN DIFFERENT CLIMATIC CONDITIONS OF IRAN

Author(s)

EGHBALSAIED SH. | MORADI SHAHRBABAK M. | MIRAEI ASHTIANI S.R. | Issue Writer Certificate

Keywords

HOLSTEINQ3

GENETIC PARAMETERSQ3

GENOTYPE AND ENVIRONMENT INTERACTIONQ3

IRANIAN CLIMATESQ3

Abstract

To investigate progeny’s production performance of Iranian and foreign HOLSTEIN bulls in different Iranian climatic conditions, 9673 first lactation records of milk and fat yield in 13 Herds from 1985 to 2005 were used. Based on Extended Demarton Method herds were grouped into 4 climates including of Dry cold, Ultra-Dry cold, Humid Temperate, and Sub-Dry cold. Cow's performances in different climates were considered as separate traits. Using a multivariate animal model, (co) variance components and GENETIC PARAMETERS were estimated. Heritability of milk and fat yield ranged from 17 to 33 percent and from 9 to 14 percent, respectively.Genetic correlations for milk and fat yield in different mentioned climates varied from 0.55 to 0.98 and from 0.22 to 0.94, respectively. Genetic correlations for both traits between Humid Temperate and other climates were lower than 0.80, indicating the presence of GENOTYPE AND ENVIRONMENT INTERACTION between them. Genetic correlations between Dry-Cold and Ultra-Dry cold for both traits were more than 0.90, indicating that we could consider performances of dairy cows in these two climates as one trait. Comparison of daughter's estimated breeding values (EBVs) of sires from different sources showed that the lowest (except in Sub-Dry cold) and the highest daughters EBVs for both traits were belonged to Iranian and New Zealand bulls, respectively.

Cites

No record.

References

No record.

Cite

APA: Copy

EGHBALSAIED, SH., MORADI SHAHRBABAK, M., & MIRAEI ASHTIANI, S.R.. (2009). COMPARISON OF PROGENY’S PRODUCTION PERFORMANCE FROM INTERNAL AND EXTERNAL HOLSTEIN BULLS IN DIFFERENT CLIMATIC CONDITIONS OF IRAN. JOURNAL OF RESEARCH IN AGRICULTURAL SCIENCE, 5(1), 113-121. SID. https://sid.ir/paper/115261/en

Vancouver: Copy

EGHBALSAIED SH., MORADI SHAHRBABAK M., MIRAEI ASHTIANI S.R.. COMPARISON OF PROGENY’S PRODUCTION PERFORMANCE FROM INTERNAL AND EXTERNAL HOLSTEIN BULLS IN DIFFERENT CLIMATIC CONDITIONS OF IRAN. JOURNAL OF RESEARCH IN AGRICULTURAL SCIENCE[Internet]. 2009;5(1):113-121. Available from: https://sid.ir/paper/115261/en

IEEE: Copy

SH. EGHBALSAIED, M. MORADI SHAHRBABAK, and S.R. MIRAEI ASHTIANI, “COMPARISON OF PROGENY’S PRODUCTION PERFORMANCE FROM INTERNAL AND EXTERNAL HOLSTEIN BULLS IN DIFFERENT CLIMATIC CONDITIONS OF IRAN,” JOURNAL OF RESEARCH IN AGRICULTURAL SCIENCE, vol. 5, no. 1, pp. 113–121, 2009, [Online]. Available: https://sid.ir/paper/115261/en

Related Journal Papers