Milk progesterone levels in relation to conception, repeat breeding and factors influencing acyclicity in dairy cows
نویسندگان
چکیده
منابع مشابه
: examining l2 teachers’ corrective feedback types in relation to learners’ uptake, proficiency levels, and context types
abstract this study investigates the teachers’ correction of students’ spoken errors of linguistic forms in efl classes, aiming at (a) examining the relationship between the learners’ proficiency level and the provision of corrective feedback types, (b) exploring the extent to which teachers’ use of different corrective feedback types is related to the immediate types of context in which err...
Effect of Milk Urea Nitrogen of Dairy Cows in Relation to Breed
Milk urea nitrogen (MUN) of dairy cows was determined in relation to breed. A total of forty (40) Pabna and red Chittagong dairy cattle each of twenty (20) were selected to know the milk composition, nutritional status and milk urea nitrogen. Live weight of Pabna Cattle (187±14 kg) was higher than that of red Chittagong cattle (174±4 kg). In Pabna cattle milk yield (4.94 kg), minerals (0.15%) a...
متن کاملTreatment of Repeat Breeding in Dairy Cows with Lugol’s Iodine
This study was carried out to see whether the uteri of dairy cows suffering from repeat breeder syndrome are infected with bacteria or not. Furthermore, the efficacy of intra-uterine infusion of diluted Lugol’s iodine to treat this syndrome was tested by studying two reproductive traits, the rate of service per conception and the length of the days open (DO). Sixty cross-bred dairy cows that we...
متن کاملExcretion rate of progesterone in milk and faeces in lactating dairy cows with two levels of milk yield.
This study was conducted to measure the effect of the level of daily milk yield on the excretion rate of progesterone (P4) in milk and faeces in high-producing (HP) and low-producing (LP) lactating dairy cows. A GnRH-agonist was implanted to block endogenous production of P4. A CIDR device was inserted into the vagina and left in place for 11 days. The average and peak milk yields were greater ...
متن کاملEffects of milk urea nitrogen and other factors on probability of conception of dairy cows.
The objective of this study was to evaluate the relationships between milk urea nitrogen (MUN) and other factors and the probability of conception in dairy cows. Data were retrieved from the Lancaster Dairy Herd Improvement Association (DHIA). A total of 713 dairy herds and 10,271 dairy cows were included in the study. Logistic regression was used to determine the within-herd effects of MUN, mi...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1978
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.0540447