Publication date: February 2017
Source:Cryobiology, Volume 74
Author(s): Reza Masoudi, Ahmad Zare Shahneh, Armin Towhidi, Hamid Kohram, Abbas Akbarisharif, Mohsen Sharafi
The aim of this study was to evaluate the fertility response of artificial insemination (AI) methods with fresh and frozen sperm in sheep. In experiment 1, one hundred and fifty fat tailed Zandi ewes were assigned into 3 equal groups and inseminated with three AI methods consisting of vaginal, laparoscopic and trans-cervical AI with fresh semen. In experiment 2, a factorial study (3 AI methods × 2 extenders) was used to analyze the effects of three AI methods and two freezing extenders containing soybean lecithin (SL) or Egg yolk (EY) on reproductive performance of 300 fat tailed Zandi ewes. Also, total motility, progressive motility, viability and lipid peroxidation of semen were evaluated after freeze-thawing in two extenders. In result, there was no significant difference among three AI methods when fresh semen was used. In experiment 2, the highest percentage of pregnancy rate, parturition rate and lambing rate were obtained in laparoscopic AI group (P < 0.05). Although pregnancy rate, parturition rate and lambing rate in trans-cervical group were higher (P < 0.05) than vaginal group, the results were not as high as laparoscopic group. No difference was observed between SL and EY extenders and their performance was close to each other. It can be concluded that although no difference was observed on reproductive performance for fresh semen, trans-cervical AI was more efficient than vaginal method when frozen-thawed semen was used, but its efficiency was not as high as laparoscopic method. Also, SL extender can be an efficient alternative extender to preserve ram sperm during cryopreservation procedure without adverse effects of EY.
from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/2kuoa8n
via IFTTT
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Δημοφιλείς αναρτήσεις
-
Publication date: October 2017 Source: International Journal of Biological Macromolecules, Volume 103 Author(s): Mingan Yu, Duqiang Liu, ...
-
Abstract Endurance exercise generates CO 2 via aerobic metabolism; however, its role remains unclear. Exogenous CO 2 by transcutaneous d...
-
FS Teni, AS Surur, A Hailemariam, A Aye, G Mitiku, AE Gurmu, B Tessema Annals of Medical and Health Sciences Research 2015 5(6):454-460 ...
-
Abstract Background Studies exploring the association between physical activity, screen time and sleep and pain usually focus on a limit...
-
RT @caonline : The role of extranodal extension in staging head and neck cancers: http://ift.tt/2qV1As1 #hncsm https://t.co/MxlLX4Olo6 f...
-
One third of adult patients with orthognathic surgery of a prognathic or retrognathic mandible show relapse. The sagittal split osteotomy of...
-
Abstract Wheat germ has an important enzymatic activity, being lipases the enzymes which cause the highest impact in the reduction of shelf...
-
Medicine by Alexandros G. Sfakianakis BioMed Research International BioMed Research InternationalTanshinone IIA Alleviates CCL2-Induced Le...
-
We present a small-scale fading analysis of the vehicular-to-vehicular (V2V) propagation channel at 5.9 GHz when both the transmitter (Tx) a...
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου