EurekaMag.com logo
+ Site Statistics
References:
48,253,228
Abstracts:
22,798,842
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ 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

+ 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

Close
Close

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:
Close
Close

Other references

Eustis, H.S.; Leoni, R., 2001: Early reoperation after vertical rectus muscle surgery. Adjustable suture strabismus surgery has a success rate between 90% and 94%. In some patients, undesirable deviations are noted in the first week after surgery. In this article, we describe a method of reoperation in the first week of the initial...

Ruddy, T.D.; Kearns, S.A.n; Aung, M.; Gulenchyn, K.Y., 1992: Antimyosin imaging in unstable angina. Circulation 86(4 SUPPL 1): I797

Davallou, H. H., 1998: Body waste detection and alarm system. Official Gazette of the United States Patent & Trademark Office Patents 1206(3): 1900, Jan 20

Wagatsuma, A.; Azami, S.; Sakura, M.; Hatakeyama, D.; Aonuma, H.; Ito, E., 2006: De Novo synthesis of CREB in a presynaptic neuron is required for synaptic enhancement involved in memory consolidation. Interaction between the activator type of cyclic AMP response element binding protein (CREB1) and the repressor type (CREB2) results in determining the emergence of long-lasting synaptic enhancement involved in memory consolidation. However, we st...

Lim, G.M.F.; Roubie, J.M., 1997: Process for preparing cephalosporin intermediates. Official Gazette of the United States Patent & Trademark Office Patents 1194(2): 1278, Jan 14

Marzluff, JM.; Balda, RP., 1990: Pinyon jays: making the best of a bad situation by helping. Unknown

Wardlaw Norman C., 1983: Rock texture, pore structure and wettability; neglected parameters in well log interpretations of fluid saturations?. Journal - Canadian Well Logging Society 12(1): 89-98

Kummeneje, K.; Krogsrud, J., 1979: Contagious ecthyma (orf) in reindeer (Rangifer tarandus). Cauliflower-like papilloma appeared on the oral mucocutaneous junction of reindeer of various ages at the Reindeer Research Station, at Lodingen, Northern Norway. They disappeared without treatment within 3-4 weeks. Electron microscopy revealed a...

Petreniuk, L.M., 1971: Treatment of chronic acquired toxoplasmosis. Klinicheskaia Meditsina 49(4): 116-121

Peng, Y.; Chen, J.; Shao, W.; Wang, F.; Dai, H.; Cheng, P.; Xia, J.; Wang, F.; Huang, R.; Zhu, Q.; Qi, Z., 2012: Xenoreactive CD4+ memory T cells resist inhibition by anti-CD44 mAb and reject islet grafts via a Th2-dependent pathway. Memory T cells are a significant barrier to the induction of transplant tolerance. Our previous study demonstrated that multiple applications of anti-CD44 monoclonal antibody (mAb) could significantly inhibit CD4+ memory T cells from mediating rej...