INVESTIGATION OF CULLING REASONS IN HOLSTEIN COMMERCIAL DAIRY HERDS IN ZANJAN PROVINCE

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.

SHAH MORADI M.; AMANLOU H.; HAGH NAZARI A.

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

Journal Paper

Paper Information

Journal: Journal of Agricultural Sciences and Natural Resources Year:2008 | Volume:15 | Issue:4 Page(s): 154-162

Download Full-Text

Persian Verion

View:

7,874

Download:

Cites:

Information Journal Paper

Title

INVESTIGATION OF CULLING REASONS IN HOLSTEIN COMMERCIAL DAIRY HERDS IN ZANJAN PROVINCE

Author(s)

SHAH MORADI M. | AMANLOU H. | HAGH NAZARI A. | Issue Writer Certificate

Keywords

CULLING REASONSQ3

HOLSTEIN DAIRY COWSQ3

SEASONQ3

ZANJANQ3

Abstract

In order to investigate reasons of culling cows in the commercial dairy herds of ZANJAN province in Iran, nine groups of causes have been investigated in this study. These reasons were; dairy purposes selling, fertility and problems in reproductive organs, low milk production, mastitis and udder conformation, leg and feet problems, diseases, displaced abomasum and nutritional problems, death, and other. CULLING REASONS of 2796 HOLSTEIN DAIRY COWS in eight herds have been studied. Data were analyzed by least square means, GLM proc of SAS software considering herd size with two levels (fewer than 100 & more than 100), SEASON with four levels and their interaction all as fixed effects. The most important reasons for culling were selling for dairy purposes, reproduction and low milk production with 228, 120, 66 cows from 587 heads culled, respectively. The next reason was other cases with frequency of 51 cows which 11 of them were resulted of foreign bodies in the stomach, 12 by dislocation of feet and legs, and the rest were due to age, Freemartin, and organs inflation. Forty five cases of culling were caused by displaced abomasums and gastrointestinal disorders. Total number of sold cows due to dairy purposes and low milk production is called voluntary culling which the rate was 50% in average. The most involuntary culling were due to infertility and reproduction problems which allocated 20.44% of total culling rate and 40.96% of involuntary culling. Small herds had higher percentage of leaving for reproduction and cow left herds for the reasons increased in the autumn (P<0.05).

Cites

No record.

References

No record.

Cite

APA: Copy

SHAH MORADI, M., AMANLOU, H., & HAGH NAZARI, A.. (2008). INVESTIGATION OF CULLING REASONS IN HOLSTEIN COMMERCIAL DAIRY HERDS IN ZANJAN PROVINCE. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 15(4), 154-162. SID. https://sid.ir/paper/8904/en

Vancouver: Copy

SHAH MORADI M., AMANLOU H., HAGH NAZARI A.. INVESTIGATION OF CULLING REASONS IN HOLSTEIN COMMERCIAL DAIRY HERDS IN ZANJAN PROVINCE. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2008;15(4):154-162. Available from: https://sid.ir/paper/8904/en

IEEE: Copy

M. SHAH MORADI, H. AMANLOU, and A. HAGH NAZARI, “INVESTIGATION OF CULLING REASONS IN HOLSTEIN COMMERCIAL DAIRY HERDS IN ZANJAN PROVINCE,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 15, no. 4, pp. 154–162, 2008, [Online]. Available: https://sid.ir/paper/8904/en

Related Journal Papers