EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ 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
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Reproductive activity in dairy cows post partum 2. ovarian and sexual activity






Zimbabwe Journal of Agricultural Research 18(2): 71-80

Reproductive activity in dairy cows post partum 2. ovarian and sexual activity

Ovarian and estrous activity were studied in 415 cows that calved in 4 dairy herds over 1 yr. Palpations per rectum were carried out twice a week for over 100 days post partum. During this period data were collected on uterine involution, ovulation incidence estrus and inseminations. In most cows, ovarian function was apparent before estrus was shown. Uterine involution was estimated to occur in 2 stages, the 1st by 17 days .+-. 6.4 and the 2nd by 28 days .+-. 10.1 post partum. The interval post partum to 1st ovulation was 41 days .+-. 20.8; to 1st estrus 49 days .+-. 23.4; and to 1st ovulation with estrus 58 days .+-. 23.0. Significant improvements in fertility could be made as a result of changes in management, including time of service post partum and improvements in efficiency and reliability of estrus detection.


Accession: 006316135



Related references

Reproductive activity in dairy cows post partum 4. factors affecting sexual activity. Zimbabwe Journal of Agricultural Research 18(2): 89-94, 1980

Reproductive activity of dairy cows post partum 3. sequential relations between ovarian cycles. Zimbabwe Journal of Agricultural Research 18(2): 81-87, 1980

Effect of ovarian activity and endogenous reproductive hormones on gonadotropin releasing hormone induced ovarian cycles in post partum dairy cows. Journal of Animal Science 50(3): 508-513, 1980

Reproductive activity of post partum dairy cows. 11th International Congress on Animal Reproduction and Artificial Insemination, University College Dublin, Ireland, June 26-30-1988 Volume 2 Brief communications (Paper 28): 3, 1988

Factors influencing ovarian activity in post-partum dairy cows. British Society of Animal Production Paper summaries Winter Meeting 1978: Paper No. 5, 2, 1978

Factors influencing ovarian activity in dairy cows post partum. Animal Production 26(3): 357, 1978

Post-partum and post-conceptional ovarian activity of dairy cows: evaluation based on progesterone profiles. Acta Veterinaria Scandinavica 32(3): 377-386, 1991

Effect of ovarian activity and endogenous reproductive hormones on gonadotropin releasing hormone induced ovarian cycles in post partum cows. Journal of Animal Science 49(SUPPL 1): 351, 1979

Follicular and ovarian activity in the early post partum period of dairy cows. Biology of Reproduction 40(SUPPL 1): 52, 1989

Several factors affecting restoration of ovarian activity in post-partum dairy cows. Journal of Zhejiang Agricultural University 23(5): 573-576, 1997