Conception rate and estrous return detection after TAI in Holstein cows
نویسندگان
چکیده
منابع مشابه
Comparing First Service Conception Rate Before and After Milking in Holstein Cows
The objective of this study was to comparing first service conception rate before and after milking and changes in metabolite and hormones during four times realted to milking in lactating dairy cow. High producing Holstein cows (> 30 Kg/d and BCS) were randomlly selected and assigned into two groups: 1- insemination before morning milking (0700 a.m, n = 150) and 2- insemination after morni...
متن کاملInsemination factors affecting the conception rate in seasonal calving Holstein-Friesian cows.
Differences in conception rate to first service between artificial inseminations (AI) carried out by commercial AI operators (CAI) or do-it-yourself operators (DIY), between natural service (NAT) and AI, between different AI sires, and between fresh and frozen-thawed semen, on Irish commercial dairy farms, were studied using logistic regression. The study comprised 12,933 potential first insemi...
متن کاملEffect of Flushed Feeding and Age on Estrus Synchronization and Conception Rate of Holstein × Local Crossbred Cows After Using Analogue GnRH and Prostaglandin F2α Hormone
The study was conducted to know the effect of flushed feeding on estrus synchronization and conception rate of Holstein ÍLocal crossbred cow’s after using the GnRH (fertagyl) and PGF2α hormone. As a representative sample 20 Holstein ÍLocal crossbred cows were chosen from Chittagong Cantonment Military Dairy Farm in Bangladesh and the experimental work was carried out for 60 days. Ten cows were ...
متن کاملConception rate of artificially inseminated Holstein cows affected by cloudy vaginal mucus, under intense heat conditions
The objective of this work was to obtain prevalence estimates of cloudy vaginal mucus in artificially inseminated Holstein cows raised under intense heat, in order to assess the effect of meteorological conditions on its occurrence during estrus and to determine its effect on conception rate. In a first study, an association was established between the occurrence of cloudy vaginal mucus during ...
متن کاملComparative cervical cytology and conception rate in postpartum dairy cows
During the early postpartum period, multiple bacterial species invade the uterus of cows. Phagocytosis by polymorphonuclear cells is a primary mechanism involved in the elimination of bacteria and improvement of conception rate. Therefore, a relationship could exist between endometrial cytology and conception rate of postpartum dairy cows. In this study 50 postpartum healthy Holstein Frisian da...
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ژورنال
عنوان ژورنال: Semina: Ciências Agrárias
سال: 2015
ISSN: 1679-0359,1676-546X
DOI: 10.5433/1679-0359.2015v36n3supl1p1945