GIVING RESPONSE GNRH HORMONE, ESTROGEN, PROGESTERONE AND PROSTAGLANDIN IN ESTRUS SYNCHRONIZATION IMPLEMENTATION ESTROUS COW RECIPIENT FRIESIAN HOLSTEIN
Main Article Content
This study aimed to test the effectiveness of the injection of a combination hormone GnRH, estrogen, progesterone and prostaglandin on response of estrus, onset estrus and duration estrus FriesianHolstain (FH) recipient dairy cattle. This study was used 15 recipient cows not pregnant, were divided into three treatment methods of synchronization of estrus and each treatment consisted of 5 cattle. Recipient cow estrus response after injection of the hormone combination estrus synchronization with all three treatments show symptoms of estrous. The percentage of estrous cows FH overall recipient reaches 100%, showed that the treatment effect is very good and effective way to bully the onset of estrous cows recipient FH. The results of data analysis using Chi-Square showed no significant difference among all treatments. It was concluded, that synchronization of estrous FHcow recipients using GnRH hormone, estrogen, progesterone and prostaglandin as good in all of the parameters.
Keywords: estrous synchronization, GnRH, estrogen, progesterone, prostaglandin.
Proposed Policy for Journals That Offer Delayed Open Access
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication, with the work [SPECIFY PERIOD OF TIME] after publication simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
Goff AK. 2004. Steroid hormon modulation of prostaglandin secretion the ruminant endometrium during the estrous cycle. J. Of Biology Reproduction 71: 11 – 16.
Hafez B. 2000. Reproduction In Farm Animal. 7th edition. Leafebiger. Philadelphia.
Hardjopranjoto S. 1995. Ilmu Kemajiran pada Ternak. Airlangga University Press. Surabaya.
Mcdonald LE.1990. Veterinary Endocrinology and Reproduction, Lea & Febringer, Philadelphia.
Mcdougall, Willamson NB. 1995. Follicle pattern during extended periods of postpartum ovulation in pasture-fed dairy cows. Research Veterinary Science 58: 212.
Moreira, Thatcher WW. 2000. Effect of day of the estrous cycle at the initiation of a timed artificial insemination protocol on reproductive responses in dairy heifers. J. Anim. Sci. 78: 1568 – 1576.
Murray RK. 2009. Biokimia harper (27 ed.). Jakarta.
Stevenson JS, Phatak AP. 2010. Rates of luteolysis and pregnancy in dairy cows after treatment with cloprostenol or dinoprost. Theriogenology 73: 1127 – 1138.
Wodzicka TM, Sutama IK, PutuIG, Chaniago TD. 1991. Reproduksi Tingkah Laku dan Produksi Ternak Indonesia. Penerbit Gramedia Pustaka Utama. Jakarta.