Skip to main content Accessibility help
×
Home
Hostname: page-component-55597f9d44-mzfmx Total loading time: 0.3 Render date: 2022-08-13T01:24:46.042Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "useRatesEcommerce": false, "useNewApi": true } hasContentIssue true

Effect of dietary energy concentrations during the peri-ovulatory period on the in vivo and in vitro development of fertilized sheep ova

Published online by Cambridge University Press:  20 November 2017

N.M. Al-Khozam
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
J.J. Robinson
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
T.G. McEvoy
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
R.P. Aitken
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
P.A. Findlay
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
I.S. Robertson
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
Get access

Extract

Results from a series of recent experiments involving superovulated ewes demonstrate the important influence of nutritionally-induced alterations in preovulatory progesterone concentrations on the subsequent in vivo and in vitro development of their fertilized ova (McEvoy et al, 1993 and 1995; Creed et al, 1994). In essence, these show that high-plane feeding can suppress preovulatory progesterone concentrations to such an extent that the subsequent development of the ova is impaired both in vivo and during in vitro culture. An important practical question however remains unanswered in that no attempt has been made to study the effects of dietary energy concentrations, as opposed to plane-of-nutrition, on progesterone concentrations and ovum development. As a result, recommendations regarding which energy sources should be used as supplements to pasture around mating time are a matter of conjecture. Furthermore, in arid environments, roughage feeds are often in short supply and therefore command a much higher price per unit of energy than concentrate diets. Under these conditions it is not unusual to feed all-concentrate diets at mating, yet there are no published data for their effects on ovum development and embryo survival.

Type
Sheep Nutrition
Copyright
Copyright © The British Society of Animal Science 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

*

Present address: Scottish Agricultural College, 581 King Street, Aberdeen AB9 1UD

References

Creed, J., McEvoy, T.G., Robinson, J.J., Aitken, R.P., Palmer, R.M. & Robertson, I. (1994) Animal Prod. 58: 447.Google Scholar
McEvoy, T.G., Robinson, J.J., Aitken, R.P., Kyle, C.E. & Robertson, I.S. (1993) Animal Prod. 56: 432.Google Scholar
McEvoy, T.G., Robinson, J.J., Aitken, R.P., Findlay, P.A. & Robertson, I.S. (1995) Theriogenology (in press). Research supported by Scottish Office Agriculture and Fisheries Department.Google Scholar

Save article to Kindle

To save this article to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Effect of dietary energy concentrations during the peri-ovulatory period on the in vivo and in vitro development of fertilized sheep ova
Available formats
×

Save article to Dropbox

To save this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Dropbox account. Find out more about saving content to Dropbox.

Effect of dietary energy concentrations during the peri-ovulatory period on the in vivo and in vitro development of fertilized sheep ova
Available formats
×

Save article to Google Drive

To save this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Google Drive account. Find out more about saving content to Google Drive.

Effect of dietary energy concentrations during the peri-ovulatory period on the in vivo and in vitro development of fertilized sheep ova
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *