. . . . . "102219" . . . "Relationships among the cervical mucus urea and acetone, accuracy of insemination timing, and sperm survival in Holstein cows" . "Holstein, reproduction, acetone, urea, sperm survival, cervical mucus"@en . "The objectives of study were to evaluate the relationships among urea and acetone content in cows\u2019 cervical mucus (CM), its crystallization type (CT) and sperm survival (SS) after timed AI. Samples of CM were collected from 192 Holstein cows treated by Ovsynch\u00AE protocol. Analysis of the urea and acetone content for identification of the metabolic status, the arborization test for evaluation of insemination timing and the short-term heat test of SS for assessment of its suitability as a biological matrix were performed. The data set was analyzed by the GLM procedure using SAS\u00AE. The results documented the existence of substantial differences in individual response to the Ovsynch\u00AE protocol causing insemination of 55.21% cows at an inappropriate time. The urea content was found as a possible indicator of a cow\u2019s metabolism resp. of insemination timing, when level lower than 500 mg.l-1 corresponded (P < 0.05 \u2013 0.01) to the cows\u2019 expected response to timed AI. The higher the urea content, the higher propor"@en . "P(QI91A061), P(QJ1210109), S" . "1-2" . . . . "The objectives of study were to evaluate the relationships among urea and acetone content in cows\u2019 cervical mucus (CM), its crystallization type (CT) and sperm survival (SS) after timed AI. Samples of CM were collected from 192 Holstein cows treated by Ovsynch\u00AE protocol. Analysis of the urea and acetone content for identification of the metabolic status, the arborization test for evaluation of insemination timing and the short-term heat test of SS for assessment of its suitability as a biological matrix were performed. The data set was analyzed by the GLM procedure using SAS\u00AE. The results documented the existence of substantial differences in individual response to the Ovsynch\u00AE protocol causing insemination of 55.21% cows at an inappropriate time. The urea content was found as a possible indicator of a cow\u2019s metabolism resp. of insemination timing, when level lower than 500 mg.l-1 corresponded (P < 0.05 \u2013 0.01) to the cows\u2019 expected response to timed AI. The higher the urea content, the higher propor" . "Dole\u017Ealov\u00E1, Martina" . . . "Animal Reproduction Science" . . "7"^^ . . "St\u00E1dn\u00EDk, Lud\u011Bk" . . "142" . "7"^^ . . "Okrouhl\u00E1, Monika" . . "41210" . . "0378-4320" . "Relationships among the cervical mucus urea and acetone, accuracy of insemination timing, and sperm survival in Holstein cows" . "[45F1E197CAAF]" . "7"^^ . . "000326558900004" . . "RIV/60460709:41210/13:61178!RIV14-MSM-41210___" . . . "RIV/60460709:41210/13:61178" . . . "NL - Nizozemsko" . . "Duch\u00E1\u010Dek, Jarom\u00EDr" . . . "Beran, Jan" . "Kadlecov\u00E1, Veronika" . "Relationships among the cervical mucus urea and acetone, accuracy of insemination timing, and sperm survival in Holstein cows"@en . "Relationships among the cervical mucus urea and acetone, accuracy of insemination timing, and sperm survival in Holstein cows"@en . "Pt\u00E1\u010Dek, Martin" .