+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
EurekaMag PDF Full Text Supply ServicePDF Full Text Supply Service
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn
Follow on LinkedInFollow on Tumblr

+ Translate

Estrus characterization in superovulated cattle

, : Estrus characterization in superovulated cattle. Theriogenology 40(6): 1243-1250

Based on frequent examinations per rectum and on external signs of estrus, the intensity of estrus was characterized in 107 superovulated dairy cows and heifers. Three intensity groups were defined: strong (n=57), moderate (n=34), and weak (n=16). Frequent blood samples were obtained for analyses of estradiol-17-beta and LH. The ovaries were exposed through surgery at various intervals after the time of prostaglandin administration, and ovarian findings (follicles, premature ovulations) were described. A total of 527 oocytes was recovered from 998 follicles aspirated, and, of these, 420 were processed for chromosomal evaluation of their nuclear maturational stage. The weak estrus intensity group differed from the strong and moderate groups in several ways. Cows and heifers in the weak intensity group had more frequent deviations in plasma hormonal patterns, a higher proportion of animals with only a few follicles, and more animals exhibiting premature ovulations. The mean oocyte recovery rate was lower in the weak group as compared with that of the other 2 groups, since more oocytes could not be accounted for in this group during the evaluation process, indicating a higher degree of oocyte fragility. Furthermore, a larger number of oocytes in the weak group displayed no identifiable chromosomes, than in the remaining 2 groups. However, apparently normal oocytes were also found in the weak group.

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 002373583

DOI: 10.1016/0093-691x(93)90294-f

PDF Full Text: Estrus characterization in superovulated cattle

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Sieswerda, PL., 1981: The captive propagation of marine fish. Aazpa (American Association Of Zoological Parks And Aquariums) Annual Proceedings: 99-102

Hatip-Al-Khatib, Izzettin; Bolukbasi, Funda; Mishima, Kenichi; Egashira, Nobuaki; Iwasaki, Katsunori; Fujiwara, Michihiro, 2001: Role of dopaminergic system in core part of nucleus accumbens in hyperlocomotion and rearing induced by MK-801 in rats: A behavioral and in vivo microdialysis study. We investigated modification of the MK-801 effect on motor activity and extracellular amines concentration by 6-hydroxydopamine (6-OHDA)-induced lesion of core nucleus accumbens (cACC) of rats. In vivo microdialysis-HPLC showed that the concentrat...

Wang, Z-fei.; Zhao, W.; Zhang, Y.; Xie, Y-ming., 2016: Analysis of influencing factors on adverse reaction of Shengfu injection based on prospective active safety monitoring. This study collected demographic data, past history, personal history, family history, dosage, solvent, combined medication information of adverse reaction cases from a prospective, multi center, large sample intensive hospital monitoring, and fou...

Anonymous, 2012: STAT1-regulated lung MDSC-like cells produce IL-1 and efferocytose apoptotic neutrophils with relevance in resolution of bacterial pneumonia. Bacterial pneumonia remains a significant burden worldwide. Although an inflammatory response in the lung is required to fight the causative agent, persistent tissue-resident neutrophils in non-resolving pneumonia can induce collateral tissue dama...

Ford, H.C.; Lim, W.C.; Crooke, M.J., 1987: Hemoglobin A1 and serum fructosamine levels in hyperthyroidism. The severity, prevalence and pathogenesis of abnormalities of carbohydrate metabolism in hyperthyroidism are incompletely defined. The extent of glycosylation of proteins provides an objective, retrospective index of glycemic control. We have meas...

Masuki, S.; Mori, M.; Tabara, Y.; Sakurai, A.; Hashimoto, S.; Morikawa, M.; Miyagawa, K.; Sumiyoshi, E.; Miki, T.; Higuchi, K.; Nose, H., 2015: The factors affecting adherence to a long-term interval walking training program in middle-aged and older people. No long-term exercise training regimen with high adherence and effectiveness in middle-aged and older people is broadly available in the field. We assessed the adherence to, and effects of, our long-term training program comprising an interval wal...

Muittari, A., 1968: Atropine methonitrate in bronchial asthma. Annales Medicinae Internae Fenniae 57(4): 193-196

Moldenhauer, I.; Hirschelmann, R.; Kurowski, M., 1991: Pharmacokinetic investigations with dexamethasone megadoses in rats. Die Pharmazie 46(6): 468-468

Vaz, F.M.; Fouchier, S.W.; Ofman, R.; Sommer, M.; Wanders, R.J., 2000: Molecular and biochemical characterization of rat gamma-trimethylaminobutyraldehyde dehydrogenase and evidence for the involvement of human aldehyde dehydrogenase 9 in carnitine biosynthesis. The penultimate step in carnitine biosynthesis is mediated by gamma-trimethylaminobutyraldehyde dehydrogenase (EC, a cytosolic NAD(+)-dependent aldehyde dehydrogenase that converts gamma-trimethylaminobutyraldehyde into gamma-butyrobetai...

Jenny, J., 1979: A humanistic strategy for patient teaching. Health Values 3(3): 175-180