Results 131 to 140 of about 2,080 (181)

Embryo production by ovum pick up from live donors

Theriogenology, 2001
Embryo production by in vitro techniques has increased steadily over the years. For cattle where this technology is more advanced and is applied more, the number of in vitro produced embryos transferred to final recipients was over 30,000 in 1998. An increasing proportion of in vitro produced embryos are coming from oocytes collected from live donors ...
C, Galli, G, Crotti, C, Notari, P, Turini, R, Duchi, G, Lazzari   +5 more
openaire   +2 more sources

Long term effect of Ovum Pick-up in buffalo species

Animal Reproduction Science, 2011
The aim of this study was to evaluate the effect of an Ovum Pick-up (OPU) treatment carried out for 9 months in buffalo (Bubalus bubalis) species. Eight pluriparous non-lactating buffalo cows underwent OPU for 9 months. Recovered cumulus enclosed oocytes (COCs) were classified and COCs suitable for in vitro embryo production (IVEP) were in vitro ...
NEGLIA, GIANLUCA, GASPARRINI, BIANCA, VECCHIO, DOMENICO, BOCCIA, LUCIA, Varricchio E., DI PALO, ROSSELLA, ZICARELLI, LUIGI, CAMPANILE, GIUSEPPE   +7 more
openaire   +4 more sources

Perurethral ultrasound-guided ovum pickup

Journal of In Vitro Fertilization and Embryo Transfer, 1988
Either a percutaneous-transvesical, a transvaginal, or a perurethral-transvesical approach can be used for oocyte recovery under ultrasound guidance in an in vitro fertilization and embryo transfer program. After having experienced these three different approaches in our program, we preferentially used the perurethral-transvesical approach as our ...
Wisanto, Arjoko, Braeckmans, Patty, Camus, Michel, Devroey, Paul, Khan, Iqbal, Staessen, Catherine, Smitz, Johan, Van Waesberghe, Linda, Van Steirteghem, Andre   +8 more
openaire   +3 more sources

Ovum Pick-Up (OPU) in Cattle: An Update

2020
The technique of ultrasound-guided transvaginal follicular aspiration for ovum pick-up (OPU) is a non-invasive procedure for recovering oocytes from antral follicles in live animals, especially in cows and mares. It was originally developed for assisted reproduction in the human species to assist infertility and was used for the first time in cattle in
openaire   +1 more source

159 TECHNIQUES FOR OVUM PICK-UP IN GONADOTROPIN-TREATED ALPACAS

Reproduction, Fertility and Development, 2007
The objective of the present study was to evaluate the quantity and quality of oocytes collected when using 2 methods for ovum pick-up and 2 different regimens for ovarian stimulation in live alpaca donors. Thirty-four non-pregnant female alpacas of 3 to 5 years of age maintained at 4100 m elevation in southern Peru were randomly distributed into 4 ...
G. Gamarra, A. Gallegos, E. Alvarado, M. Asparrin, W. Vivanco   +4 more
openaire   +1 more source

Repeated endoscopic ovum pick-up in hormonally untreated ewes: a new technique

Theriogenology, 1997
Multiple ovulation and embryo transfer (MOET) are cumbersome and may not be used in all animals. An alternative method for obtaining embryos is to harvest ova and subject them to in vitro maturation/fertilization (IVM/IVF). We tested a modified endoscopic technique designed to allow repeated recovery of oocytes from donor ewes without any hormonal ...
B, Kühholzer, S, Müller, A, Treuer, J, Seregi, U, Besenfelder, G, Brem   +5 more
openaire   +2 more sources

Ovum Pick‐up in Dairy Heifers: Does it Affect Animal Well‐being?

Reproduction in Domestic Animals, 2007
ContentsThe aim of the present study was to assess the effects of the ovum pick‐up (OPU) technique on animal well‐being. Eight dairy heifers were subjected to 4 months of twice‐weekly OPU. The physiological response to OPU was recorded in four heifers at two sessions, at the beginning (time 1) and at the end (time 2) of the 4‐month period.
S, Petyim, R, Båge, A, Madej, B, Larsson   +3 more
openaire   +2 more sources

Repeated ovum pick up in Italian buffalo cows

1996
The potential of the ovum pick-up technique, used over a long period, was evaluated in 6 Italian Mediterranean buffalo cows that had more than 500 d open. The cows were submitted to ovum pick-up twice weekly for 2 mo. An additional 2-mo cycle of ovum pick-up was performed in 3 of the buffalo.
BONI R., ROVIELLO S., ZICARELLI, LUIGI
openaire   +1 more source

Ovum Pick Up in Thai native calf(Ovum Pick Up ในลูกโคพื้นเมืองไทย)

The Thai Journal of Veterinary Medicine, 1995
Chainarong Lohachit, Mongkol Techakumphu, Wichai Tantasuparak, Kaywalee Chatdarong, Siriwat Suadsong   +4 more
openaire   +1 more source

Tonic prime-boost of STING signalling mediates Niemann–Pick disease type C

Nature, 2021
Xintao Tu, Kun Yang, Jianjun Wu
exaly