Results 211 to 220 of about 2,840 (237)
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Reproduction in Domestic Animals, 2020
AbstractThe aim of the present study was to compare the endometrial gene expression of epidermal growth factor receptor (EGFR), nodal growth differentiation factor (NODAL), prostaglandin‐endoperoxide synthase 2 (PTGS2), oestrogen receptor 1 (ESR1) and progesterone receptor (PGR) in repeat breeder cows (RBC) and non‐RBC during diestrus.
María Jaureguiberry +9 more
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AbstractThe aim of the present study was to compare the endometrial gene expression of epidermal growth factor receptor (EGFR), nodal growth differentiation factor (NODAL), prostaglandin‐endoperoxide synthase 2 (PTGS2), oestrogen receptor 1 (ESR1) and progesterone receptor (PGR) in repeat breeder cows (RBC) and non‐RBC during diestrus.
María Jaureguiberry +9 more
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The Bovine Practitioner, 1999
Cows that fail to become pregnant after 3 inseminations may be termed repeat breeders (RBs).This paper reviews the incidence, economics, etiology and management of the RB cow. The incidence of RB in U.S. dairy herds is approximately 20% and depends on herd conception rate. Factors resulting in repeat breeding are discussed.
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Cows that fail to become pregnant after 3 inseminations may be termed repeat breeders (RBs).This paper reviews the incidence, economics, etiology and management of the RB cow. The incidence of RB in U.S. dairy herds is approximately 20% and depends on herd conception rate. Factors resulting in repeat breeding are discussed.
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The Bovine Practitioner, 1976
400 Friesian cows were clinically examined 1 day after their 4th insemination. Diagnoses of management errors, anatomical defects, abnormal vaginal discharge, cystic follicles and delayed ovulation were made in 5, 19, 16, 10 and 2% resp. of cows, the remainder appearing to be clinically normal.
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400 Friesian cows were clinically examined 1 day after their 4th insemination. Diagnoses of management errors, anatomical defects, abnormal vaginal discharge, cystic follicles and delayed ovulation were made in 5, 19, 16, 10 and 2% resp. of cows, the remainder appearing to be clinically normal.
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Chlamydiae in oviducts and uteri of repeat breeder pigs
Theriogenology, 2006Chlamydial infections of the genital organs cause reproductive failure in female pigs, and the uterus is recognized a target tissue for an infection. In contrast, information on the effect of chlamydiae on the porcine oviduct is patchily and inconclusive, although the bacteria are known to cause severe tubal defects in humans and laboratory animals ...
Johannes, Kauffold +5 more
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Practice Tips for the "Normal" Repeat Breeder
American Association of Bovine Practitioners Conference Proceedings, 1986In dairy practice many of my most frustrating cases used to be cows that cycle regularly (every 20-22 days), palpate normal on rectal exam, show dramatic and appropriate length heats, but fail to conceive after repeated inseminations. Many times dairymen will ask me about these cows when I am at the farm for another reason and the problem cow has just "
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Intraperitoneal insemination in repeat-breeder cows: A preliminary report
Theriogenology, 1995Intraperitoneal insemination of 62 repeat-breeder dairy cows resulted in 9 pregnancies. The pregnancy rate was not different for intraperitoneal or uterine inseminations. In nonpregnant cows, reproductive variables such as the percentage of cows returning to estrus, the average interval from insemination to the next estrus, and the pregnancy rate ...
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Treatment of the repeat breeder cow syndrome in Kenya
Tropical Animal Health and Production, 1978One hundred repeat breeder dairy cows have been studied in detail. Although clinically 60 per cent of them were normal bacteria were isolated from the uteri of the majority (90 per cent). Thirty per cent of these isolates were mixed. Intra-uterine infusion of the uteri with diluted Lugol's Iodine solution, supplemented in a few cases by antibiotic ...
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Characteristics of embryos from repeat breeder and virgin heifers
Theriogenology, 1985The characteristics of 7-day-old embryos non-surgically collected from 35 repeat breeder heifers (RBH) and 24 virgin heifers (VH) were compared by repeated observations within each animal. A higher incidence of the embryos collected from the VH was classified as normal and had reached a more advanced developmental stage than embryos from the RBH ...
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Successful, repeated non-surgical collection of blastocysts from virgin and repeat breeder heifers
Veterinary Science Communications, 1980A total of 55 non-surgical collections, 7 days after spontaneous heat, was made in 19 heifers. Recovery rate was 57% (17/30) from 10 repeat breeder heifers and 72% (18/25) from 9 virgin heifers, this difference was not significant. Fertilization rate in both groups was 94%. The eggs were always recovered in the first 100 ml of flushing medium.
T. Linares +4 more
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ALTERATION OF PHYSIOLOGICAL PARAMETERS IN REPEAT BREEDER COWS
2022Repeat breeding is a significant reproductive problem to develop in a cattle industry in developing country. In this study, we demonstrated physiological alterations in terms of hematological, biochemical and hormonal profile being developed in repeat breeder cows.
Sultana, Jabin +6 more
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