Investigating post-partum ovarian cyclicity following various treatments in dairy cows

Sharma, A., CSK Himachal Pradesh Agricultural Univ., Palampur . DGCN College of Veterinary and Animal Sciences; Singh, M., CSK Himachal Pradesh Agricultural Univ., Palampur . DGCN College of Veterinary and Animal Sciences; Kumar, P., CSK Himachal Pradesh Agricultural Univ., Palampur . DGCN College of Veterinary and Animal Sciences; Dogra, P.K., CSK Himachal Pradesh Agricultural Univ., Palampur . DGCN College of Veterinary and Animal Sciences

Investigating post-partum ovarian cyclicity following various treatments in dairy cows

2019

Sharma, A., CSK Himachal Pradesh Agricultural Univ., Palampur (India). DGCN College of Veterinary and Animal Sciences | Singh, M., CSK Himachal Pradesh Agricultural Univ., Palampur (India). DGCN College of Veterinary and Animal Sciences | Kumar, P., CSK Himachal Pradesh Agricultural Univ., Palampur (India). DGCN College of Veterinary and Animal Sciences | Dogra, P.K., CSK Himachal Pradesh Agricultural Univ., Palampur (India). DGCN College of Veterinary and Animal Sciences

The present study envisages the effect of PGF2α and antibiotic treatment on ovarian cyclic activity and regression of corpus luteum verum in post-partum dairy cows. Cows were divided into three treatment (PG8, PG25, antibiotic) and a control group. Ovarian activity was studied by examining follicular dynamics up to 42 days post-partum in which diameter of dominant follicle before first ovulation, the number of days to first ovulation and complete regression of corpus luteum verum were evaluated. Body condition score was recorded for all the cows in different groups. Also, ovulation on ovary ipsilateral or contralateral to previous gravid uterine horn was noted. On transrectal ultrasonography at a 3-day interval, dominant follicle diameter prior to ovulation was significantly higher (p is less than 0.01) in PG8 group. The mean time required for complete regression of CL verum was not significantly (p is greater than 0.05) lower in PG8 group i.e. 24.33±1.48 days in comparison to PG25, antibiotic and control group (26.67±1.48, 29.00±1.81and 27.60±1.40 days post-partum, respectively). A subsequent ovarian activity was affected as 70.83 and 66.33% 1st and 2nd ovulations occurred on the ovary contralateral to corpus luteum verum. In conclusion, contralateral ovary was more active in terms of ovulation whereas presence of corpus luteum verum had no effect on post-partum ovarian cyclic activity.

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Mots clés AGROVOC

antibiotics antibiotique body condition corps jaune corpus luteum dairy cows follicule ovarien inde india latvia letonia lettonie ovaire ovarian follicles ovaries ovarios ovulation perinatal period pgf 2 alfa pgf 2 alpha terapia therapy ultrasonografia ultrasonographie ultrasonography vacas lecheras

Informations bibliographiques

Publié dans

Rural Sustainability Research (Electronic resource) (Latvia) | Scientific journal of Latvia University of Life Sciences and Technologies

Volume 41 Numéro 336 ISSN 2256-0939

Pagination

p. 22–25

D'autres materias

Periode perinatale; Ovulacion; Cuerpo luteo; Ovarian cyclicity; Vache laitiere; Therapeutique; Condicion corporal; Etat corporel; Antibioticos; Periodo perinatal; Foliculos ovaricos

Langue

anglais

Note

Summary (En)

2 tables, 6 fig., 11 ref.

Continues edition: Proceedings of the Latvia University of Agriculture, ISSN 2255-8535 (Online), ISSN 1407-4427 (Print)

Type

Web Site; As

Sur AGRIS depuis: 2019-09-15

Format: AGRIS AP

Fournisseur de données

Cette notice bibliographique a été fournie par Fundamental Library of Latvia University of Life Sciences and Technologies