Results 1 to 10 of about 220 (158)

Embryo transfer as an option to improve fertility in repeat breeder dairy cows [PDF]

Journal of Veterinary Research, 2021
Repeat breeding is a serious reproductive disorder in dairy cattle. The causes of repeat breeding are multifactorial and there are two main mechanisms: failure of fertilisation or early embryo death, mainly due to poor quality of oocytes and an ...
Nowicki Arkadiusz
doaj   +3 more sources

TREATMENT OF REPEAT BREEDER BUFFALO-COWS [PDF]

Assiut Veterinary Medical Journal, 1983
In this study, eleven antibiotics were tested against the bacteria isolated from cer. vical samples of 200 buffalo-cows suffering from repeat breeder.
M.A. EL-NAGAAR, A.M. OSMAN, B.H. SERUR, A.A.M. EL-TIMAWY   +3 more
doaj   +2 more sources

Follicular growth patterns in repeat breeder cows [PDF]

Veterinární Medicína, 2003
The aim of this study was to examine follicular development patterns in eighteen repeat breeder cows through natural oestrus cycles. Ovarian ultrasonographic examinations over 32 days after artificial insemination revealed that two follicular waves were ...
C.C. Pérez, I. Rodríguez, F. Espańa, J. Dorado, M. Hidalgo, J. Sanz   +5 more
doaj   +2 more sources

Effect of seminal plasma infusion into the vagina on the normalization of endometrial epidermal growth factor concentrations and fertility in repeat breeder dairy cows

Journal of Reproduction and Development, 2020
Epidermal growth factor (EGF) concentrations in the uterus show two peaks on days 2–4 and 13–14 during the estrous cycle in fertile cows. Loss of the two peaks has been linked to reduced fertility in repeat breeder cows.
Yojiro Yanagawa, Masashi Nagano, Seiji Katagiri   +2 more
exaly   +3 more sources

The prevalence of subclinical endometritis and intrauterine infections in repeat breeder cows

Theriogenology, 2015
The objectives of this study were to assess the prevalence of subclinical endometritis and the presence of common uterine pathogens in repeat breeder cows. A total of 121 cows with three or more consecutive artificial inseminations without conception and no clinical signs of disease were defined as repeat breeder cows and were enrolled in this trial ...
K Wagener, M Jauréguiberry, R L De La Sota   +2 more
exaly   +4 more sources

BACTERIOLOGICAL STUDIES OF THE REPEAT BREEDER BUFFALO COWS IN UPPER EGYPT [PDF]

Assiut Veterinary Medical Journal, 1983
Bacteriological examination of cervical samples were obtained from El-Hawatka buffalo farm (82 repeat breeder and 36 normal breeder buffaloes), Assiut Agriculture school (9 repeat breeder) and from 9 villages in Assiut and Abutig (109 repeat breeder ...
A.M.H. OSMAN, M.A. EL-NAGGAR, A.A.M. EL-TIMAWY, B.H. SERUR   +3 more
doaj   +2 more sources

Evaluation of the effect of sustained‐release progesterone injection on the expression of interferon‐related genes in repeat‐breeder dairy cows

Veterinary Medicine and Science
Background Repeat‐breeder cows repeatedly fail to conceive after at least three attempts and return to oestrus at apparently normal intervals. Repeat‐breeder cows cause economic losses in dairy farms in different ways.
Jahangir Modaresi, Ali Kadivar, Naser Shams-Esfandabadi   +2 more
exaly   +2 more sources

Repeat Breeder Syndrome Therapies in Dairy Cows: A Review

Reproduction in Domestic Animals
ABSTRACTRepeat breeder (RB) cows are clinically healthy animals with regular oestrous cycles that do not become pregnant after three or more services. This syndrome has an incidence ranging between 10.1% and 24%. Repeat breeder syndrome (RBS) in dairy cows leads to economic losses to dairy farmers by increasing the calving interval and consequently ...
Alice Carbonari, Matteo Burgio, Lorenza Frattina   +2 more
exaly   +4 more sources

Detection of bacterial biofilm in uterine of repeat breeder dairy cows

Asian Pacific Journal of Reproduction, 2017
Objective: To determine the possibility of presence of bacterial biofilm in the uterus of repeat breeder cows and to evaluate the effect of mucolytic agent in cleanup of uterus from biofilm.Methods: Twenty repeat breeder cows were selected from a large ...
Mohammad Rahim Ahmadi, Abdollah Derakhshandeh, Sadegh Shirian, Yahya Daneshbod, Maryam Ansari-Lari, Saeid Nazifi   +5 more
doaj   +2 more sources

Inflammatory uterine microenvironment in long-term infertility repeat breeder cows compared with normal fertile cows

Veterinary and Animal Science
The reproductive performance of lactating dairy cows is gradually declining, and one of the causes of this problem is the presence of long-term infertility repeat breeder cows (RBCs).
Ryotaro Miura, Koumei Shirasuna
exaly   +3 more sources