Technical and economic assessment of cattle herds of some experimental research stations in Egypt [electronic resource]
Language: English Summary language: Arabic Description: p. 73 - 80Other title:- علاقة الارتباط بين الشكل المطاطي والتوصيل الكهربائي وتبلور مخاط عنق الرحم ومعدل الحمل في الأبقار البلدي المصرية [Added title page title]
- Mansoura university journal of animal and poultry production, 2022 v.13 (5) [electronic resource].
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Main | ART MUJAPP V13 No6 1 (Browse shelf(Opens below)) | Available |
Includes bibliographic reference
Alteration of the biophysical and biochemical characteristics of cervical mucus (CM) due to differences in steroid hormones through
the estrus cycle leads to different pregnancy rates. This investigation aims to study the possible relationship between CM properties
with biochemical profiles, macro-mineral levels, and steroid hormones concentrations, in reference with pregnancy rates of Egyptian Baladi cows.
Fourteen Baladi cows were used and synchronized. The model log-likelihood ratio was highly significant (P=0.0009), and reported that the spinnbarkeit (SPK),
electrical conductivity (EC), and crystallization (CRS) had significant effect on pregnancy rate. The 3rd level of SPK (>13.5 cm) and EC (>15 mS/cm)
showed significantly the highest effect (P=0.0016 & 0.0517, respectively) and a clear positive of estimate marginal effect (20.2543 & 10.6192, respectively)
attitude towards the pregnancy rate. However, in case of the CRS, the significant effect was in the first two levels (P=0.0321 & 0.0425, respectively)
with pregnancy rate, reverse the last 2 levels. Total proteins, cholesterol, glucose, potassium, and chloride levels, and estradiol concentrations
were increased with increasing levels of SPK and EC, and appearance of typical fern patterns (first two levels of CRS), in contrast to sodium level
and progesterone (P4) concentrations that decreased with elevating levels of SPK and EC and appearance of atypical fern patterns (last two levels of CRS).
There was a close correlation between CM properties and steroid hormones (P4 & E2). So, alterations in CM properties, especially SPK, EC, and CRS,
can be utilized to foresee estrus time and, as a result, insemination time.
Keywords: Cervical mucus, spinnbarkeit, conductivity, crystallization, pregnancy rate
Summary in Arabic
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