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| rdf:type
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| Description
| - Environmemtal influences, such as chronic and acute changes in dietary intake and body composition can have a profound effect on fertility and, specifically, ovarian function in all mammalian species. Therefore, the relationships between nutrition and reproduction in cattle have been extensively studied. The aim of our study was to evaluate the influence of body condition score (BCS) on oocyte yield and embryo development in vitro. Each of 163 dairy cows used as a source of ovaries, were given a BCS using a scale of 1 (emaciated) to 5 (obese) before slaugther and a total of 326 ovaries from cows with BCS 1 - 4 were collected. The ovarian characteristics: the mean number of follicles, yield and quality of oocytes as well as embryo development were evaluated. The mean number of follicles per ovary was significantly lowest (P<0.001) in the BCS 4 (5.19 ± 1.24) compared to BCS 1(13.33 ± 1.31), BCS 2 (15.33 ± 2.06) and BCS 3 (18.04 ± 2.66) respectively. The quality of oocytes (maturation grade) recovered from BCS 3 cows (61.27%) was significantly higher (P<0.001) compared to oocytes from BCS 4 (35.48 %) and higher (P<0.05) compared to BCS 1(45.27 %) and BCS 2 (48.97 %) cows. In the BCS 3 group the most of matured oocytes (96.13 % ) were fertilized. There were no differences in cleavage and blastocyst rate among BCS 1(50.47 and 24.07 %), BCS 2 (42.7 and 26.7 %) and BCS 3 (46.6 and 24.30 %) categories, respectively. Our results indicate that cows tended to emaciation (BCS 1) and those tended to obesity (BCS 4) has significantly lower prematuration oocyte quality. The oocytes recovered from the cows with average body condition (BCS 3) have an optimal oocyte quality suitable for in vitro embryo production. Maturation rate of oocytes and in vitro embryo development are not greatly influenced by BCS, but are rather a function of in vitro conditions.
- Environmemtal influences, such as chronic and acute changes in dietary intake and body composition can have a profound effect on fertility and, specifically, ovarian function in all mammalian species. Therefore, the relationships between nutrition and reproduction in cattle have been extensively studied. The aim of our study was to evaluate the influence of body condition score (BCS) on oocyte yield and embryo development in vitro. Each of 163 dairy cows used as a source of ovaries, were given a BCS using a scale of 1 (emaciated) to 5 (obese) before slaugther and a total of 326 ovaries from cows with BCS 1 - 4 were collected. The ovarian characteristics: the mean number of follicles, yield and quality of oocytes as well as embryo development were evaluated. The mean number of follicles per ovary was significantly lowest (P<0.001) in the BCS 4 (5.19 ± 1.24) compared to BCS 1(13.33 ± 1.31), BCS 2 (15.33 ± 2.06) and BCS 3 (18.04 ± 2.66) respectively. The quality of oocytes (maturation grade) recovered from BCS 3 cows (61.27%) was significantly higher (P<0.001) compared to oocytes from BCS 4 (35.48 %) and higher (P<0.05) compared to BCS 1(45.27 %) and BCS 2 (48.97 %) cows. In the BCS 3 group the most of matured oocytes (96.13 % ) were fertilized. There were no differences in cleavage and blastocyst rate among BCS 1(50.47 and 24.07 %), BCS 2 (42.7 and 26.7 %) and BCS 3 (46.6 and 24.30 %) categories, respectively. Our results indicate that cows tended to emaciation (BCS 1) and those tended to obesity (BCS 4) has significantly lower prematuration oocyte quality. The oocytes recovered from the cows with average body condition (BCS 3) have an optimal oocyte quality suitable for in vitro embryo production. Maturation rate of oocytes and in vitro embryo development are not greatly influenced by BCS, but are rather a function of in vitro conditions. (en)
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| Title
| - Effect of body condition score on oocyte yield and in vitro embryo development
- Effect of body condition score on oocyte yield and in vitro embryo development (en)
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| skos:prefLabel
| - Effect of body condition score on oocyte yield and in vitro embryo development
- Effect of body condition score on oocyte yield and in vitro embryo development (en)
|
| skos:notation
| - RIV/49608851:_____/12:#0000557!RIV13-MZE-49608851
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/49608851:_____/12:#0000557
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - cow; body condition score (BCS); oocyte yield; in vitro embryo development (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| |
| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
| |
| http://linked.open...iv/tvurceVysledku
| - Bezdíček, Jiří
- Hegedüšová, Zdeňka
- Kubovičová, Elena
- Makarevič, Alexander
- Slezáková, Milena
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| issn
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| number of pages
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