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Effect of post artificial insemination treatment with two different progesterone intravaginal devices on conception and synchronization of the returning estrus in Japanese Black cows. 2018

Naoki Yamamoto, and Ryo Nishimura, and Yosuke Gunji, and Makoto Saneshige, and Kensuke Kiriki, and Mitsugu Hishinuma
United Graduate School of Veterinary Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan.

The objective of this study was to evaluate the effects of post artificial insemination (AI) treatment with intravaginal progesterone device (P4 device) on conception rate, synchronization of returning estrus and plasma P4 concentration in Japanese Black cows. Nineteen cows were treated with DIB (1.0 g P4) from Day 12 to 19 (Day 0=day of the first AI), 27 cows were treated with a CIDR (1.9 g P4) from Day 12 to 19, and 33 cows were not treated after the first AI (control). Estrous behavior was daily examined between Day 20 and 25, and cows returning to estrus were inseminated (the second AI). On Day 19, plasma P4 concentration was not different among DIB, CIDR and control groups. There was no significant difference in conception rate after the first AI among three groups (DIB: 63.2%, CIDR: 66.7% and control: 72.7%). In non-pregnant cows, there was no significant difference in the proportion of cows showed returning estrus between Day 20 and 25 (DIB: 57.1%, CIDR: 22.2% and control: 44.4%), and day of returning estrus was not synchronized. The overall conception rate after the first and second AI was not different among the groups. In conclusion, post-AI treatment with intravaginal devices containing 1.0 and 1.9 g P4 from Day 12 to 19 neither increased plasma P4 concentration nor improved fertility and synchronization of the returning estrus in Japanese Black cows.

UI MeSH Term Description Entries
D007315 Insemination, Artificial Artificial introduction of SEMEN or SPERMATOZOA into the VAGINA to facilitate FERTILIZATION. Artificial Insemination,Eutelegenesis,Artificial Inseminations,Eutelegeneses,Inseminations, Artificial
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D011270 Pregnancy, Animal The process of bearing developing young (EMBRYOS or FETUSES) in utero in non-human mammals, beginning from FERTILIZATION to BIRTH. Animal Pregnancies,Animal Pregnancy,Pregnancies, Animal
D011374 Progesterone The major progestational steroid that is secreted primarily by the CORPUS LUTEUM and the PLACENTA. Progesterone acts on the UTERUS, the MAMMARY GLANDS and the BRAIN. It is required in EMBRYO IMPLANTATION; PREGNANCY maintenance, and the development of mammary tissue for MILK production. Progesterone, converted from PREGNENOLONE, also serves as an intermediate in the biosynthesis of GONADAL STEROID HORMONES and adrenal CORTICOSTEROIDS. Pregnenedione,Progesterone, (13 alpha,17 alpha)-(+-)-Isomer,Progesterone, (17 alpha)-Isomer,Progesterone, (9 beta,10 alpha)-Isomer
D002417 Cattle Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor. Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D004343 Drug Implants Small containers or pellets of a solid drug implanted in the body to achieve sustained release of the drug. Drug Implant,Drug Pellet,Pellets, Drug,Drug Pellets,Implant, Drug,Implants, Drug,Pellet, Drug
D005260 Female Females
D005306 Fertilization The fusion of a spermatozoon (SPERMATOZOA) with an OVUM thus resulting in the formation of a ZYGOTE. Conception,Fertilization, Delayed,Fertilization, Polyspermic,Conceptions,Delayed Fertilization,Delayed Fertilizations,Fertilizations,Fertilizations, Delayed,Fertilizations, Polyspermic,Polyspermic Fertilization,Polyspermic Fertilizations
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D018873 Pregnancy Rate The ratio of the number of conceptions (CONCEPTION) including LIVE BIRTH; STILLBIRTH; and fetal losses, to the mean number of females of reproductive age in a population during a set time period. Live-Birth Pregnancy Rate,Pregnancy Rate, Live-Birth,Pregnancy Rates,Rate, Pregnancy,Rates, Pregnancy,Live Birth Pregnancy Rate,Live-Birth Pregnancy Rates,Pregnancy Rate, Live Birth,Pregnancy Rates, Live-Birth,Rate, Live-Birth Pregnancy,Rates, Live-Birth Pregnancy

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