Factors influencing multiple ovulation in dairy cows from Latvian brown, Latvian blue, and Danish red breeds at risk in Latvia

Antane, V.; Lusis, I.; Sematovica, Ilga; Waldmann, A.; Kanska, I.; Mangale, M.; Ringa-Osleja, G.; Lidaks, M.

doi:10.1016/j.livsci.2020.104379

Cited by 2 publications

(1 citation statement)

References 39 publications

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“…MO is achieved by using follicle-stimulating gonadotropins, FSH and LH hormones to promote the development of subordinate follicles, which results in the development of multiple ovum and multiple CL in ovaries. However, there are many factors, such as environment, management, genetics, nutrition, applied hormones, and the scheme of insemination, that may influence how a particular cow responds to hormonal stimulations (Antane et al, 2021). In our study, hormonal stimulation in the MO group was successful in 58% of cases (7 cows out of 12), confirmed by ultrasound examination of multiple CL in ovaries.…”

Section: Discussionmentioning

confidence: 47%

Histological Characteristics of the Endometrium and its Affecting Factors in Dairy Cattle (Bos taurus) on Embryo Transfer Day

Pigiņka-Vjačeslavova,

Ponomarjova,

Lacberga

et al. 2023

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

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In cows embryo transfer occurs on the 7th day of the oestrous cycle. Embryo survival and successful pregnancy depend on many factors, including early interaction between embryo and endometrium. Therefore, the aim of our research was to describe histo-morphological characteristics of endometrium in donor and recipient cows on obtaining and transfer day, respectively (7th day of the oestrus cycle). In addition, progesterone and oestradiol levels, the ipsilateral and contralateral corpus luteum, animal age, lactation number and days postpartum were determined. The results of the study revealed a significant difference in endometrial gland cell size, vacuolisation of glandular epithelium cytoplasm, and stromal oedema in the donor and recipient cows. However, these parameters were related only to the level of progesterone in the blood, and no other investigated factors in this study.

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Section: Discussionmentioning

confidence: 47%