ESTIMATION OF GENETIC PARAMETERS FOR FIRST LACTATION PRODUCTION AND REPRODUCTION TRAITS IN IRANIAN HOLSTEIN COWS

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.

TOGHYANI S.; SHADPARVAR A.A.; MORADI SHAHRBABAK M.; DADPASAND TAROMSARI M.

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

Journal Paper

Paper Information

Journal: Iranian Journal of Animal Science Year:2009 | Volume:40 | Issue:2 Page(s): 69-76

Download Full-Text

Persian Verion

View:

745

Download:

Cites:

Information Journal Paper

Title

ESTIMATION OF GENETIC PARAMETERS FOR FIRST LACTATION PRODUCTION AND REPRODUCTION TRAITS IN IRANIAN HOLSTEIN COWS

Author(s)

TOGHYANI S. | SHADPARVAR A.A. | MORADI SHAHRBABAK M. | DADPASAND TAROMSARI M. | Issue Writer Certificate

Keywords

GENETIC PARAMETERQ2

YIELD TRAITSQ2

FERTILITY TRAITSQ2

ANIMAL MODELQ3

IRANIAN HOLSTEIN COWSQ2

Abstract

To estimate the GENETIC PARAMETERs for production and reproduction traits in Holstein cows, information from 15 herds recorded by Animal Breeding Center of Iran during 1980–2004, were employed. Estimations were made using restricted maximum likelihood method under an ANIMAL MODEL ranging DF-REML and MATVEC software. Estimates of heritabilities for YIELD TRAITS were moderate and ranged from 0.15 (fat yield) to 0.26 (milk yield). Heritabilities for FERTILITY TRAITS were low, and varied between 0.04 (interval from calving to first service) to 0.07 (gestation period length). Genetic correlations between YIELD TRAITS were form -0.5 (milk yield and protein percentage) to 0.81 (milk yield along with fat yield). Most genetic correlations between FERTILITY TRAITS were close to zero. Genetic correlation estimates among YIELD TRAITS and FERTILITY TRAITS varied from -0.51 (open days and protein yield) to 0.96 (protein yield and calving interval). Due to antagonistic genetic correlations between FERTILITY TRAITS and production traits, both these traits need to be taken into account in a selection program.

Cites

No record.

References

No record.

Cite

APA: Copy

TOGHYANI, S., SHADPARVAR, A.A., MORADI SHAHRBABAK, M., & DADPASAND TAROMSARI, M.. (2009). ESTIMATION OF GENETIC PARAMETERS FOR FIRST LACTATION PRODUCTION AND REPRODUCTION TRAITS IN IRANIAN HOLSTEIN COWS. IRANIAN JOURNAL OF ANIMAL SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 40(2), 69-76. SID. https://sid.ir/paper/193623/en

Vancouver: Copy

TOGHYANI S., SHADPARVAR A.A., MORADI SHAHRBABAK M., DADPASAND TAROMSARI M.. ESTIMATION OF GENETIC PARAMETERS FOR FIRST LACTATION PRODUCTION AND REPRODUCTION TRAITS IN IRANIAN HOLSTEIN COWS. IRANIAN JOURNAL OF ANIMAL SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2009;40(2):69-76. Available from: https://sid.ir/paper/193623/en

IEEE: Copy

S. TOGHYANI, A.A. SHADPARVAR, M. MORADI SHAHRBABAK, and M. DADPASAND TAROMSARI, “ESTIMATION OF GENETIC PARAMETERS FOR FIRST LACTATION PRODUCTION AND REPRODUCTION TRAITS IN IRANIAN HOLSTEIN COWS,” IRANIAN JOURNAL OF ANIMAL SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 40, no. 2, pp. 69–76, 2009, [Online]. Available: https://sid.ir/paper/193623/en

Related Journal Papers