DETERMINATION OF THE BEST BIRTH WEIGHT FOR SURVIVAL TO WEANING IN KARAKUL BREED LAMBS

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.

BAHRI BINABAJ F.; TAHMOORESPUR M.; ASLAMINEJAD A.A.; VATANKHAH M.

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

Journal Paper

Paper Information

Journal: Animal Production Research Year:2013 | Volume:2 | Issue:1 Page(s): 53-63

Download Full-Text

Persian Verion

View:

5,129

Download:

Cites:

Information Journal Paper

Title

DETERMINATION OF THE BEST BIRTH WEIGHT FOR SURVIVAL TO WEANING IN KARAKUL BREED LAMBS

Author(s)

BAHRI BINABAJ F. | TAHMOORESPUR M. | ASLAMINEJAD A.A. | VATANKHAH M. | Issue Writer Certificate

Keywords

KARAKUL BREEDQ2

LAMB SURVIVALQ2

OPTIMUM BIRTH WEIGHTQ2

Abstract

To study the effect of non-genetic factors on survival of Karakul lambs from birth to weaning age 6, 426 records collected from year 1992 through 2009 were used. Traits under study were cumulative survival from birth to 14, 30, 60 and 90 days of age. For each trait a linear model fitted which included the factors of lambs' year and month of birth, type of birth, sex, age of dam and birth weight (as linear and quadratic covariates). The GLM procedure of SAS software was applied. All the factors except for age of dam had significant effects (P<0.001) on traits. Mortality to weaning age in total, single and twins were 8%, 5.87% and 17.79% respectively. Hazard ratio of death from birth to 30d of age had increasing trend and after that till weaning showed decreasing one. In males and twins hazard of death was higher compared to females and single lambs.Average birth weight in singles and twins were 5.32 (0.67) and 4.25 (0.65) kg respectively. OPTIMUM BIRTH WEIGHT in which survival would be maximum in 14, 30, 60 and 90 days of age in singles and twins were 5.78, 4.68; 5.88, 4.86; 5.93, 5.03 and 5, 5.93 kg respectively. OPTIMUM BIRTH WEIGHT in which survival would be maximum in 14, 30, 60 and 90 days of age in male and female lambs were 5.9, 5.4; 6.1, 5.6; 6.4, 5.6 and 5.9, 5 kg respectively. It can be suggested that in order to develop the survival of Karakul lambs we select lambs on the basis of the optimal birth weight instead of the higher one.

Cites

No record.

References

No record.

Cite

APA: Copy

BAHRI BINABAJ, F., TAHMOORESPUR, M., ASLAMINEJAD, A.A., & VATANKHAH, M.. (2013). DETERMINATION OF THE BEST BIRTH WEIGHT FOR SURVIVAL TO WEANING IN KARAKUL BREED LAMBS. ANIMAL PRODUCTION RESEARCH, 2(1), 53-63. SID. https://sid.ir/paper/237184/en

Vancouver: Copy

BAHRI BINABAJ F., TAHMOORESPUR M., ASLAMINEJAD A.A., VATANKHAH M.. DETERMINATION OF THE BEST BIRTH WEIGHT FOR SURVIVAL TO WEANING IN KARAKUL BREED LAMBS. ANIMAL PRODUCTION RESEARCH[Internet]. 2013;2(1):53-63. Available from: https://sid.ir/paper/237184/en

IEEE: Copy

F. BAHRI BINABAJ, M. TAHMOORESPUR, A.A. ASLAMINEJAD, and M. VATANKHAH, “DETERMINATION OF THE BEST BIRTH WEIGHT FOR SURVIVAL TO WEANING IN KARAKUL BREED LAMBS,” ANIMAL PRODUCTION RESEARCH, vol. 2, no. 1, pp. 53–63, 2013, [Online]. Available: https://sid.ir/paper/237184/en

Related Journal Papers