Productive and reproductive risk factors affecting the culling of Holstein dairy 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.

Bahrampour Jamil; Sataei mokhtari Morteza

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

Journal Paper

Paper Information

Journal: JOURNAL OF ANIMAL ENVIRONMENT Year:2020 | Volume:11 | Issue:4 Page(s): 39-46

Download Full-Text

Persian Verion

View:

598

Download:

Cites:

Information Journal Paper

Title

Productive and reproductive risk factors affecting the culling of Holstein dairy cows

Author(s)

Bahrampour Jamil | Sataei mokhtari Morteza | Issue Writer Certificate

Keywords

Risk factorsQ1

Holstein cowsQ1

ProductiveQ2

fertilityQ1

CullingQ1

Abstract

Culling of dairy cows causes financial losses and a higher cost of replacing the culled cows, therefore quantification of the association between Risk factors and Culling is useful for Reduce costs and increase profitability. The present study was conducted to evaluate the association between Productive and reProductive Risk factors which may affect Culling of the dairy cows. The data were collected from2003 to 2012. The Logistic regression model was applied to investigate the associations between the response variable, the risk of Culling, and predictor variables including parity, calving ease, standardized 305-d milk yield, age at the first calving, calving interval, day to first and last service and numbers of inseminations per conception. The risk of Culling increased (P< 0. 001) with parity. The odds ratio (OR) increased with increasing in calving difficulty score except for the farmer-assisted cows. Risk of Culling (P< 0. 001) decreased with increases in the standardized 305d milk yield. Cows that calved first at about 24 months of age had a lower risk of Culling. The ORs were 1. 28, 1. 67 and 2. 21 for cows with 349 to 385, 385 to 442 and ≥ 442 (d) calving intervals, and the risk of Culling was increased with increases in the day to last service and insemination but days to first service had no significant effects on Culling of dairy cow. Results showed that the studied Risk factors significantly affected the Culling rate in cows, and can be used as management tools for decreasing the risk of Culling and increasing the profitability of the enterprise.

Cites

No record.

References

No record.

Cite

APA: Copy

Bahrampour, Jamil, & Sataei mokhtari, Morteza. (2020). Productive and reproductive risk factors affecting the culling of Holstein dairy cows. JOURNAL OF ANIMAL ENVIRONMENT, 11(4 ), 39-46. SID. https://sid.ir/paper/206599/en

Vancouver: Copy

Bahrampour Jamil, Sataei mokhtari Morteza. Productive and reproductive risk factors affecting the culling of Holstein dairy cows. JOURNAL OF ANIMAL ENVIRONMENT[Internet]. 2020;11(4 ):39-46. Available from: https://sid.ir/paper/206599/en

IEEE: Copy

Jamil Bahrampour, and Morteza Sataei mokhtari, “Productive and reproductive risk factors affecting the culling of Holstein dairy cows,” JOURNAL OF ANIMAL ENVIRONMENT, vol. 11, no. 4 , pp. 39–46, 2020, [Online]. Available: https://sid.ir/paper/206599/en

Related Journal Papers