Sequential changes in ovarian follicular dynamics in Bos indicus heifers before and after nutritional anoestrus
نویسندگان
چکیده
منابع مشابه
Candidate Gene Expression in Bos indicus Ovarian Tissues: Prepubertal and Postpubertal Heifers in Diestrus
Growth factors such as bone morphogenetic proteins 6, 7, 15, and two isoforms of transforming growth factor-beta (BMP6, BMP7, BMP15, TGFB1, and TGFB2), and insulin-like growth factor system act as local regulators of ovarian follicular development. To elucidate if these factors as well as others candidate genes, such as estrogen receptor 1 (ESR1), growth differentiation factor 9 (GDF9), follicl...
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The objectives of Experiment 1 were to determine the interval from ovulation to deviation, and diameter of the dominant follicle (DF) and largest subordinate follicle (SF) at deviation in Nelore (Bos indicus) heifers by two methods (observed and calculated). Heifers (n = 12) were examined ultrasonographically every 12 h from ovulation (Day 0) to Day 5. The time of deviation and diameter of the ...
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The objective of this study was to characterize the patterns of ovarian follicular waves, and FSH and P4 concentration during estrous cycle in Thai native cattle (Bos indicus). Transrectal ultrasound examination of ovaries was performed daily using a 7.5 MHz transducer and blood samples were collected after the ultrasound examination during May to August, 2010. There were 1-, 2or 3-follicular w...
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Factors affecting pregnancy rate of 5627 Zebu embryos in crossbred females with unknown proportions of Holstein and Zebu breeding were examined. After evaluation for developmental stage, quality, and viability, embryos were immediately transferred to recipients. Pregnancy diagnosis was conducted approximately 53 d after transfer; pregnancy rate was coded as a binomial event and analyzed using l...
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The aim of this study was to evaluate the effects of GnRH, LH, hCG or exogenous progesterone administration on plasma progesterone concentrations and pregnancy rates following embryo transfer in Bos taurus x Bos indicus cross-bred heifers. In Experiment 1, animals with body condition scores 3.5 (1 to 5 scale) were synchronized with two injections of a prostaglandin F2 analog 13 days apart. He...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1995
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.1040041