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Factors affecting expression of estrus measured by activity monitors and conception risk of lactating dairy cows
(Elsevier B.V., 2015-10-01)
The objective of this study was to determine risk-factors affecting increase in physical activity during estrus and pregnancy per artificial insemination (P/AI) in lactating dairy cows. Cows were monitored continuously by ...
Expression of estrus modifies the gene expression profile in reproductive tissues on Day 19 of gestation in beef cows
(Elsevier B. V., 2015-10-14)
The aim of this study was to test the effect of expression of estrus at artificial insemination (AI) on endometrium, conceptus, and CL gene expression of beef cows. Thirty-six multiparous nonlactating Nelore cows were ...
Autoclaved, previously used intravaginal progesterone devices induces estrus and ovulation in anestrous Toggenburg goats
(Elsevier B.V., 2011-11-01)
Intravaginal progesterone devices are used worldwide for estrus induction in goats. Reused devices are able to induce estrus; however, this can be a health risk within a flock. The objective was to compare new and previously ...
Características clínicas del estro inducido con hormonas y su relación con el porcentaje de gestación en búfalas de río nulíparas
(2016-01-01)
An amount of 82 nulliparous female water buffaloes were studied to compare the signs of induced estrus with hormone protocols (P). Treatments PI (n=29), PII (n=28) and PIII (n=25) received 2.0 mg of estradiol benzoate and ...
Ovarian remnant syndrome in small animals
(Universidade Estadual de Londrina (UEL), 2012-01-01)
The ovarian remnant syndrome (ORS) is an iatrogenic disorder in bitches and queens, which is characterized by recurrence of estrus following surgical spay, due to the presence of a piece of ovarian tissue within the abdominal ...
Effects of gonadotropin-releasing hormone at initiation of the 5-d timed artificial insemination (AI) program and timing of induction of ovulation relative to AI on ovarian dynamics and fertility of dairy heifers
(ELSEVIER SCIENCE INC, 2011)
Two experiments evaluated the effects of the first GnRH injection of the 5-d timed artificial insemination (AI) program on ovarian responses and pregnancy per AT (P/AI), and the effect of timing of the final GnRH to induce ...
In utero and lactational exposure to fipronil in female rats: Pregnancy outcomes and sexual development
(2016-03-18)
Fipronil, a phenylpyrazole insecticide, is used in agriculture, veterinary medicine, and public health. Because this insecticide is considered a potential endocrine disruptor, the aim of this study was to examine the ...