Veterinaria Medika
ISSN 1979-1305
Vol. 4 / No. 1 / Published : 2011-02
Order : 9, and page :49 - 52
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Original Article :
Identification of pregnancy associated glycoprotein (pag) from milk of pregnant dairy cattle
Author :
- Samik, Abdul*1
- Fakultas Kedokteran Hewan Universitas Airlangga
Abstract :
The sustainability of livestock sources is related to birth rate increase and the shortening of calving interval. One of the efforts to shorten the calving interval in dairy cattle is by conducting early diagnosis of pregnancy after mating. The development of early pregnancy diagnosis method in livestock can be undertaken by observing specific substance presents in the milk of pregnant livestock, i.e. the Pregnancy Associated Glycoprotein (PAG). The objective of this study was to isolate PAG protein from milk of pregnant dairy cattle as the base for developing one of early pregnancy test in cattle.This study was conducted by following these stages: 1) Isolation milk protein and 2) Identification of PAG protein from the milk of pregnant dairy cattle by SDS-PAGE and Western Blot method. The results of SDS-PAGE ofmilk pregnant dairy cattle PAG isolate revealed 10 protein bands with molecular weights between 37.85 and 210.51kDa. Specificity test with Western blot indicated protein band recognized by anti-PAG monoclonal antibody, believedt o be PAG protein with molecular weight of 66,41 kDa. Based on the results, it can be concluded that milk of pregnant dairy cattle express PAG protein with molecular weight 66,41 kDa.
Keyword :
Milk of dairy cattle, Milk protein, Pregnancy associated glycoprotein, ., .,
References :
Sousa, N.M., B. Remy, B. El Amiri, J.R. de Figueiredo, H. Banga mboko, P. B. D. Goncalves a n d,(2002) Characterization of Pregnancy Associated Glycoprotein Extracted from Zebu (Bos indicus) Placental Removed at Different Gestational Periods United States : Reprod.Nutr.Dev. 42, 227-241.
El Amiri B, B Remy, NM De Sousa and JF Beckers.,(2004) Isolation and characterization of eight pregnancy-associated glycoproteins present at hight level ovine placenta between day 60 and day 100 of gestation. United States : Reprod. Nutr. Dev. 44:169-181
Aulani'am,(2005) Protein & Analisisnya Malang : Citra Mentari Goup
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