Previous research indicates that high blood urea nitrogen (BUN) concentrations are associated with decreased fertility in lactating dairy cows.This experiment was done to evaluate the effects of equine chorionic gonadotropin (eCG) administration (with or without eCG) on fertility of lactating dairy cows with different levels of BUN subjected to fixed-time artificial insemination (FTAI).Ovulatio...

Feed intake and nutrient digestibility, rumen fermentation profiles, milk yield compositions of lactating dairy cows fed with Flemingia macrophylla pellet (FMP) were evaluated. Four crossbred in early lactation randomly allocated into a 2×2 factorial arrangement 4×4 Latin square design (LSD). The first factor was protein level concentrate mixtures consisted two levels, i.e., 14% 16%. second sup...

The purpose of this work was to study the effect changing way keeping and milking equipment on ergonomic economic indicators. research carried out at «Ostriykivske» LLC, Bilotserkivskyi district, Kyiv region, where herd transferred from a capital-type room with tethered housing into milk pipeline an easy-to-assemble loose in hall «Carousel» plant. material for lactating cows Ukrainian black-spo...

Abstract Milk fat synthesis of ruminants can be inhibited by intermediates of ruminal fatty acid biohydrogenation including trans-10, cis-12 conjugated linoleic acid (CLA). These biohydrogenation intermediates signal a coordinated downregulation of genes involved in mammary FA synthesis, transport, and esterification. We have previously reported decreased mammary expression of sterol response e...

Background: The primary aim of the present study is to evaluate effect chelated organic mineral mixture “HimChelate” (Developed by Himalaya Wellness Company) on milk production, fat percentage, solids not (SNF) and somatic cell counts in lactating dairy cows. Methods: A total eight cows were randomly selected one group (G) supplemented with HimChelate mixed concentrate feed water at a dose 30 g...

Transiently increased teat wall thickness in response to machine milking has been documented by various methods, including ultrasound. However, correlative ultrasonography and histology detect the origin of this phenomenon is lacking. The first goal present study was evaluate compare milking-related changes tissue 2 breeds dairy cows (11 Simmental 3 Holstein) using B-mode ultrasonography. Addit...

The objective of this study was to measure the effect of feeding two total mixed rations (TMRs), differing in their roughage content and in vitro dry matter (DM) digestibility, on the physiological response and energy balance of lactating cows. The partitioning of metabolizable energy intake (MEI) between heat production (HP) and retained energy (RE) of cows held under hot weather conditions an...

Reproductive failure in inseminated cattle results from poor fertilization and embryo survival. Recent studies utilizing dairy and beef cattle indicate that fertilization rates are higher for nulliparous dairy and beef heifers and nonlactating beef cows than lactating beef and dairy cows and nonlactating dairy cows. Several factors affect fertilization rates, but the greatest impact was observe...

The objective of this study was to examine the effect of an excess intake of quickly degradable nitrogen (QDN) on ovarian follicle development. Twenty lactating dairy cows were fed mixed silage and concentrates twice daily. The control diet was a typical ration for high producing dairy cows in the United Kingdom (crude protein (CP)=17.5%; metabolizable energy (ME)=11.8 MJ/kg DM). The cows were ...

This study investigated the effect of Rumex Sc (commercial product which includes of Saccharomyces cervisiae, saponin and essential oils) on rumen fermentation, blood glucose, urea, milk yield and milk composition. Animals were offered a basal diet containing alfalfa hay (15.5%), corn silage (24%), beet pulp (7%) and concentrate (53.5%). Additionally, Rumex Sc was included in the experimental d...