Retained bovine placenta – various treatments and their effects

Abstract

Given the influence of retentio secundinarum (RS) on the reproductive performance of cows, the current work aimed to assess the effect of various approaches to the treatment of retained placenta on the main reproductive parameters, primarily on the interval from parturition to the first service, and the insemination index. The trial involved 120 dairy cows in which the placenta was not expelled within 24 h postpartum. The first group (G1, n=60) contained cows in which the retained placenta was not extirpated, but they were administered antibiotics. The second group (G2, n=60) comprised cows in which the placenta was removed manually, and were also administered antibiotics. At the end of the study, 53 cows remained in G1 and 54 cows in G2. According to medicament therapy, both groups were divided into three sub-groups treated with: procaine benzylpenicillin, chlortetracycline hydrochloride or ceftiofur. Comparison of the performance of G1 and G2 cows showed significantly better fertility parameters occurred in the animals from which the retained placenta was extracted manually. The pregnancy rate in the G2 group was remarkably higher than in the G1 group. The average service interval was significantly lower (p<0.05) in the G2 group compared to the G1 group. The best results were obtained with the i.m. administration of ceftiofur after the removal of the placenta.

Uzimajući u obzir uticaj RS (retentio secundinarum) na reproduktivne performanse krava, cilj ovog rada je bio da se proceni efekat različitih pristupa lečenju zadržane posteljice na glavne reproduktivne parametre, pre svega na interval od porođaja do koncepcije i indeks osemenjavanja. U ispitivanju je učestvovalo 120 muznih krava kod kojih nije došlo do izbacivanja posteljice 24 sata nakon porođaja. Prva grupa (G1, n = 60) uključivala je krave kod kojih zadržana placenta nije manuelno uklanjana, već je terapija podrazumevala samo aplikaciju antibiotika. Drugu grupu (G2, n = 60) činile su krave kojima je posteljica odstranjena manuelno i uz to primenjena antibiotska terapija. Do kraja eksperimenta je u prvoj oglednoj grupi ostalo 53 krave, a u drugoj grupi 54 krave. Prema vrsti medikamentozne terapije, obe grupe su podeljene u tri podgrupe i lečene su prokain-benzilpenicilinom, hlortetraciklin hidrohloridom i ceftiofurom. Upoređivanjem reproduktivnih performansi prve i druge grupe krava, primetni su značajno bolji parametri plodnosti kod životinja kojima je manuelno izvađena zadržana posteljica i kojima su uz to aplikovani antibiotici. Broj gravidnih životinja u G2 grupi bio veći u odnosu na G1 grupu. Prosečno trajanje servis perioda bilo je statistički značajno kraće (p<0,05) u G2 grupi u poređenju sa G1 grupom. Najbolji rezultati postignuti su i.m. primenom ceftiofura nakon uklanjanja placente.