TITLE

POSTPARTUM OVARIAN FOLLICULAR DYNAMICS AND ESTRUS ACTIVITY USING PROSTAGLANDIN F2A IN DAIRY COWS

AUTHOR(S)
Rutkauskas, Arūnas; Ž1inskas, Henrikas
PUB. DATE
September 2005
SOURCE
Veterinarija ir Zootechnika;2005, Vol. 31 Issue 53, p43
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The objective of performed study was to characterize postpartum follicular dynamics of corpus luteum persistens using prostaglandins F2α in dairy cows. Twenty Lithuanian Black and White breed 3-7 year old cows were divided into three groups: two experimental — Group 1(n=13) and Group 2 (n=4), and control — Group 3 (n=3). Before and after treatment with two different prostaglandin F2α commercial formations — Dalmazin® (Group 1) and Estron® (Group 2) ovaries, corpus luteum and follicles were examined by ultrasonography and blood level of progesterone was determined. It was estimated that after treatment with Dalmazin (Group 1) follicle have grown 2.03 mm per day and estrus signs was shown by 92.3 % of animals. In Group 1 follicle were on 2.35 mm larger, estrus signs increased by 17.3 % cows, artificial insemination rates were on 16.6 % higher compared animals in the Group 2 treated with Estron (P<0.05). In conclusion, Dalmazin have shown significantly higher efficiency for treatment of corpus luteum persistens compared to Estron.
ACCESSION #
18619086

 

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