Relationship between the duration of the parturition phases of dairy cows, body condition and the postpartum uterine inflammations
2000
Dimitrov, M. | Vasilev, N. (Thracian University, Stara Zagora (Bulgaria)) | Mitev, J. | Gergovska, Z. | Miteva, T.
The study encompasses 761 calving of dairy cows - 195 from the Bulgarian Black and White cattle and 566 from the Bulgarian Brown cattle.All cows have been given equal rations.The high body condition score of cows before calving - above 4 points results in prevailing afternoon calving and extended second phase of parturation.In thin cows - below 2.5 points slight increase the duration of parturition is observed but night calving do prevail.Cows that had extended second phase of parturition are also accompanied by a delayed placenta discharge.In calving that had taken place without assistance the discharge of placenta occurs approximately in 5.7h., while in those with obstetric aid - in about 11.7 h.The delayed discharge of placenta more than 10 h after the end of the second phase of parturition presupposes a significant increase in postpartum uterine inflamatory cases.
Показать больше [+] Меньше [-]Ключевые слова АГРОВОК
Библиографическая информация
Эту запись предоставил Institute of Agricultural Economics