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Relationships among body condition score, milk yield and reproduction in Czech Fleckvieh cows
Czech Fleckvieh body condition score milk yield reproduction indicators BCS development
2015/6/5
The objective of this study was to confirm the relationship among body condition score at the time around parturition, milk yield in subsequent lactation, reproductive efficiency and BCS development i...
Study of an association between SNP 775C>T within the bovine ITBG2 gene and milk performance traits in Black and White cows
BLAD carriers point mutation lethal genes milk performance traits QTL marker
2015/6/4
The exclusive pre-selective effect of BLAD carriers reproducing in the exposed Holstein-Friesian cattle population prompted to search for the candidate gene variants of high quality of milk performanc...
Relationships between the incidence of health disorders and the reproduction traits of Holstein cows in the Czech Republic
health fertility parameters dairy cows
2015/6/4
The objective of this study was to evaluate the relationships between several health disorders: milk fever (MF; hypocalcaemia and parturient paresis), retained placenta (RP; retained foetal membranes)...
Effects of high air temperatures on milk efficiency in dairy cows
dairy cows milk production milk composition high air temperatures elevation housing breed cooling
2015/6/2
26 herds with 71 586 individual records were used. We tested a hypothesis that milk efficiency was influenced by the elevation of the farm, housing system, breed, area of altitude, and by the cooling ...
Responses of milk urea nitrogen content to dietary crude protein level and degradability in lactatingHolsteindairy cows
protein level protein degradability milk urea N lactating cos
2015/6/2
Two experiments were conducted to investigate the effects of dietary crude protein level and degradability on milk urea nitrogen (MUN) content. In experiment 1, twelve multiparous lactating cows avera...
Change of amino acid profile in Charolais cows’ colostrum and transient milk during the first week post partum
Charolais cows colostrum transient milk amino acids
2015/6/2
In this study the change in amino acid profile in cow’s colostrum and transient milk during the first week after parturition was examined in a Hungarian Charolais herd. Experiments were carried out wi...
Relationships between conformation traits and longevity of Holstein cows in the Czech Republic
Holstein cows longevity type traits correlations
2015/6/2
The relationships between conformation traits and longevity traits were analyzed in 41 489 Holstein cows born in the years 1994–1999 which were culled by 30th June 2005. Pearson correlation coefficien...
The relationship between linear type traits and stayability of Czech Fleckvieh cows
cattle stayability type traits correlation
2015/6/2
The relationship between linear type traits and stayability was analyzed in 34 492 Czech Fleckvieh cows. Pearson correlation coefficients were calculated between linear type traits and stayability of ...
Effects of fat-protein supplementation of diets for cows in early lactation on milk yield and composition
dairy cows CaFA salts milk composition yield
2015/6/2
An experiment was performed on 37 Holstein-Friesian cows during the first 120 days of lactation. The cows were fed balanced diets composed of haylage and maize silage (together 52% dry mater) and a co...
Passage of nutrients into the duodenum and their postruminal digestion in cows fed crushed and ground maize
crushed maize ground maize degradation of nutrients
2015/6/1
In an in vivo experiment the 2 ?2 Latin square method and Cr as a marker were used to determine ruminal degradation and postruminal digestion of nutrients from a feed ration containing 3 kg of crushed...
Effects of rearing, sire and calving season on growth and milk efficiency in dairy cows
dairy cows rearing sire
2015/6/1
32 primiparous cows were used. We tested the hypotheses that live weight and milk efficiency were influenced by the system of rearing from the second week of life to weaning, by the sire, and by the s...
Effects of different forage-containing rations on metabolic parameters and milk yield in the peripartum of Holstein cows
hay silage forage
2015/6/1
To evaluate the forage effects on performance and metabolic parameters, 24 Holsteins were randomly fed one of the diets containing a forage mixture with majority of alfalfa hay (AH), alfalfa silage (A...
Sampling factors causing variability in milk constituents in early lactation cows
milk composition somatic cell count
2015/5/25
This study was conducted to evaluate effects of breed, parity, sampling day, and sampling time on
somatic cell count (SCC) and milk lipid and protein profiles in intra-mammary infection-free early l...
Feasibility of Miscanthus as alternative bedding for dairy cows
bedding material cow comfort bacterial load
2015/5/25
Despite dairy farmers’ awareness of the importance of correct bedding for the health and comfort
of their cows, they are often frugal with respect to these bedding materials in order to reduce costs...
Effects of season on plasma progesterone profiles in repeat breeding cows
embryonic death luteal function season cows
2015/5/25
Twenty eight (60.9%) and 18 (39.1%) cows were followed in summer (June–August)
and winter (December–February), respectively. In the summer season, the total progesterone concentrations were
higher...