Fertility
- Economic Feeding for High Fertility11 January 10
An examination of scientific evidence relating to nutrition and fertility was undertaken with the overall objective of producing a review of key factors in nutritional related infertility and to highlight nutritional strategies to improve reproductive performance in high yielding Holstein dairy cows. - Genetics of Health and Fertility in Dairy Cattle11 January 10
The MDC-funded research addressed several issues that are vital to halting the decline in genetic merit for health and fertility in the UK dairy herd. - Improving Reproductive Performance of Dairy Cows11 January 10
This project used milk progesterone data to assess the heritability of fertility traits in UK dairy cattle. The advantage of fertility traits based on hormone data is that they are not biased by management decisions as are other ‘traditional’ fertility parameters such as calving interval, conception to first service etc. - Milk Urea and Fertility in Dairy Cows11 January 10
This report gives the results of three studies in which the relationship between fertility and the urea content of bulk milk, or milk from individual cows taken five days after service were examined. - Neospora Abortion in Dairy Cows11 January 10
The aims of this project were to improve diagnosis of infected cattle, to increase our understanding of how the infection is transmitted and to determine what factors lead to abortion. - Priorities for Dairy Cattle Reproduction11 January 10
A desktop review of fertility information leading to a list of priorities for MDC research funding. These included fertilities indices for genetic selection, nutritional and metabolic interactions in high yeilding cows. - Reproductive Performance of the High Genetic Cow11 January 10
To investigate the extent to which fertility is compromised in high genetic merit cows by detailed monitoring of ovarian function. - A cost-benefit study on the use of vasectomised bulls as an aid to heat detection11 January 10
The study was conducted on the basis of alternate 28 day periods, with and without the bull, over a 24 week period. Bulls were fitted with a chin ball harness, so that bulling cows were marked, if oestrus activity was not observed. - Online Milk Progesterone18 January 10
It is now well established that milk progesterone analysis can provide a valuable tool in reproductive management of the dairy cow. Automatic measurement in the parlour would remove the need for additional labour input and would provide instant information at the point of use for the farmer. - BVDV & Conception Rate in Cattle15 January 10
BVDV and its effect on conception rates in dairy cattle.
