Effects of summer and winter temperature– humidity index on performance of some reproductive traits of high producing 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.

Dashti Hadi; RIASI AHMAD; Edris Mohammad Ali; GHORBANI GHOLAM REZA; Omidi Mirzaei Hossein

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

Journal Paper

Paper Information

Journal: Iranian Journal of Animal Science Year:2016 | Volume:47 | Issue:2 Page(s): 321-327

Download Full-Text

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

Persian Verion

View:

808

Download:

Cites:

Information Journal Paper

Title

Effects of summer and winter temperature– humidity index on performance of some reproductive traits of high producing dairy cows

Author(s)

Keywords

Lactating dairy cowQ2

progesteroneQ1

reproductive performanceQ1

seasonQ2

THIQ2

Abstract

The aim of THIs study was to consider reproductive performance parameters and blood progesterone concentration changes in high-producing dairy cows (39± 2 kg per day) after artificial insemination, in summer and winter. 270 heads of Holstein dairy cattle were choose in three big dairy farms, and blood samples were collected at days seven, ten and fourteen after artificial insemination. Temperaturehumidity index was calculated according to one proposed formula (Dikmen and Hansen, 2009). The results showed that the maximum temperature– humidity index (THI) was 77. 35 and 57. 47 in summer and winter respectively. Pregnancy rates in cows inseminated during the winter months was significantly higher (p<0. 01) than cows inseminated during the summer, and the effects of lactation on conception rate was significant in both seasons (p<0. 01). Open days (101. 18 vs. 165. 07) and number of services per conception (2. 05 vs. 3/48) in the winter were significantly lower than cows inseminated during the summer (p<0. 01). In day 14 after insemination, blood serum progesterone concentration in cows inseminated in the winter was significantly higher (p<0. 01) than summer. Results of THIs study showed that summer heat stress has significantly affects reproductive performance of dairy cows in central of Iran.

Cites

No record.

References

No record.

Cite

APA: Copy

Dashti, Hadi, RIASI, AHMAD, Edris, Mohammad Ali, GHORBANI, GHOLAM REZA, & Omidi Mirzaei, Hossein. (2016). Effects of summer and winter temperature– humidity index on performance of some reproductive traits of high producing dairy cows. IRANIAN JOURNAL OF ANIMAL SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 47(2 ), 321-327. SID. https://sid.ir/paper/193558/en

Vancouver: Copy

Dashti Hadi, RIASI AHMAD, Edris Mohammad Ali, GHORBANI GHOLAM REZA, Omidi Mirzaei Hossein. Effects of summer and winter temperature– humidity index on performance of some reproductive traits of high producing dairy cows. IRANIAN JOURNAL OF ANIMAL SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2016;47(2 ):321-327. Available from: https://sid.ir/paper/193558/en

IEEE: Copy

Hadi Dashti, AHMAD RIASI, Mohammad Ali Edris, GHOLAM REZA GHORBANI, and Hossein Omidi Mirzaei, “Effects of summer and winter temperature– humidity index on performance of some reproductive traits of high producing dairy cows,” IRANIAN JOURNAL OF ANIMAL SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 47, no. 2 , pp. 321–327, 2016, [Online]. Available: https://sid.ir/paper/193558/en

Related Journal Papers