Comparison of selected data acquisition models using on-farm production records on qualitative parameters of oocytes in dairy cows

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985904%3A_____%2F24%3A00583333" target="_blank" >RIV/67985904:_____/24:00583333 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41210/24:98484

Result on the web

<a href="https://cjas.agriculturejournals.cz/artkey/cjs-202401-0005_comparison-of-selected-data-acquisition-models-using-on-farm-production-records-on-qualitative-parameters-of-oo.php" target="_blank" >https://cjas.agriculturejournals.cz/artkey/cjs-202401-0005_comparison-of-selected-data-acquisition-models-using-on-farm-production-records-on-qualitative-parameters-of-oo.php</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17221/156/2023-CJAS" target="_blank" >10.17221/156/2023-CJAS</a>

Result language

angličtina

Original language name

Comparison of selected data acquisition models using on-farm production records on qualitative parameters of oocytes in dairy cows

Original language description

Dairy cows enter the negative energy balance in the early post-partum period, which negatively affects milk yield, health status and reproduction. This study aimed to determine if milk yield (MY) and fat/protein (F/P) ratio could be used as reliable indicators for predicting the quality of aspirated oocytes and their further use for in vitro fertilisation. A secondary goal was to compare different periods before oocyte aspiration to determine which period had the most significant impact on the oocyte development in donor cows. All tested Holstein cows were at their first lactation (n = 68). The first ultrasound-guided follicular aspiration in donor cows was done on average at 58.7 days in milk (DIM). Usually, a second aspiration followed a week later if no problems were detected. In total, 102 aspirations were performed. Three model equations with different F/P ratio distributions and variant s of MY production were tested in statistical evaluation. On average, 3.6 oocytes were retrieved per donor per aspiration, with a minimum of 1 and a maximum of 12. The maturation rate was 62.2%, with a high probability of reaching metaphase II (90.45%). The highest number of oocytes was obtained from low-yielding cows with a low F/P ratio in all evaluated periods (P < 0.01). The quality and expansion of cumulus-oocyte complexes were unaffected by the metabolic status. However, a tendency for better quality oocytes in donors with lower MY and F/P ratios was observed in all models. Our preliminary results showed that the prediction of oocyte quality in a homogeneous group of the first-lactation cows was related to the chosen data acquisition model. Data about milk yield and F/P ratio obtained from onfarm systems provide a valuable source of information for the selection of oocyte donors.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10605 - Developmental biology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Czech Journal of Animal Science

ISSN

1212-1819

e-ISSN

1805-9309

Volume of the periodical

69

Issue of the periodical within the volume

1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

10

Pages from-to

1-10

UT code for WoS article

001165187000001

EID of the result in the Scopus database

2-s2.0-85185573063