Estimation of Variance Component of Micro-environmental Sensitivity of Milk Yield and Somatic Cell Score 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.

Ehsaninia Jamshid; GHAVI HOSSEIN ZADEH NAVID

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

Journal Paper

Paper Information

Journal: Animal Science Journal Year:2020 | Volume:32 | Issue:125 Page(s): 121-130

Download Full-Text

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

Persian Verion

View:

244

Download:

Cites:

Information Journal Paper

Title

Estimation of Variance Component of Micro-environmental Sensitivity of Milk Yield and Somatic Cell Score in Iranian Holstein cows

Author(s)

Ehsaninia Jamshid | GHAVI HOSSEIN ZADEH NAVID | Issue Writer Certificate

Keywords

Residual varianceQ1

Dairy cowQ2

HeritabilityQ2

Genetic coefficient of variationQ1

UniformityQ1

Abstract

The genetic difference in micro-environmental sensitivities are measurable through the heterogeneity of the Residual variance between animals and it can be seemed that these differences could be inherited. The objective of current study was to estimate the genetic variance components and Heritability of micro-environmental sensitivities for milk yield and somatic cell score (SCS) traits in the first lactation of Iranian Holstein cows. Data included the 1, 466, 498 and 875, 416 test day records for milk yield and somatic cell score, respectively, that were collected by the Animal Breeding Center and Promotion of Animal Products of Iran from 1987 to 2015. The GLM procedure of SAS software was used to determine the fixed effects which were fitted in the statistical model of analysis. Estimation of variance components and genetic parameters of micro-environmental sensitivity was performed using ASReml software, applying the double hierarchical generalized linear model (DHGLM). Heritability of micro-environmental sensitivity for milk yield (0. 00201± 0. 00014) and somatic cell score (0. 00188± 0. 00018) was lower compared with the Heritability of milk yield (0. 16± 0. 08) and somatic cell score (0. 034± 0. 007). However, the genetic coefficient variation (GCV) for Residual variance of the mentioned traits was estimated to be 0. 18 and 0. 16, respectively, which indicating a substantial potential for selection responses in both traits. The results of this study indicate that heterogeneity of residual variation in milk yield and somatic cell score of Iranian Holstein cows was partly under genetic control and therefore Uniformity of these traits could be improved by selection for residual variance.

Cites

No record.

References

No record.

Cite

APA: Copy

Ehsaninia, Jamshid, & GHAVI HOSSEIN ZADEH, NAVID. (2020). Estimation of Variance Component of Micro-environmental Sensitivity of Milk Yield and Somatic Cell Score in Iranian Holstein cows. ANIMAL SCIENCES JOURNAL (PAJOUHESH & SAZANDEGI), 32(125 ), 121-130. SID. https://sid.ir/paper/383395/en

Vancouver: Copy

Ehsaninia Jamshid, GHAVI HOSSEIN ZADEH NAVID. Estimation of Variance Component of Micro-environmental Sensitivity of Milk Yield and Somatic Cell Score in Iranian Holstein cows. ANIMAL SCIENCES JOURNAL (PAJOUHESH & SAZANDEGI)[Internet]. 2020;32(125 ):121-130. Available from: https://sid.ir/paper/383395/en

IEEE: Copy

Jamshid Ehsaninia, and NAVID GHAVI HOSSEIN ZADEH, “Estimation of Variance Component of Micro-environmental Sensitivity of Milk Yield and Somatic Cell Score in Iranian Holstein cows,” ANIMAL SCIENCES JOURNAL (PAJOUHESH & SAZANDEGI), vol. 32, no. 125 , pp. 121–130, 2020, [Online]. Available: https://sid.ir/paper/383395/en

Related Journal Papers