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Effects of polymorphism in the bovine PTPRQ gene on the expression of MYF6 and MYF5 genes in skeletal muscle and on meat production traits in beef bulls
receptor-type III PTP with phosphatidylinositol phosphatase activity genotype muscle regulatory factors bovine meat traits
2016/6/3
The aim of the study was to characterize nucleotide sequence polymorphisms in the bovine PTPRQ gene, to search for their possible effect on the expression of myogenic factor 6 (MYF6; MRF4) and myogeni...
Genetic correlations between type traits of young Polish Holstein-Friesian bulls and their daughters
dairy cattle conformation traits
2015/7/7
The objective of this study was to evaluate the usefulness of young bulls’ conformation scores
in a national type evaluation system. For this purpose the genetic correlations between conformation tr...
Association of heat shock protein 70 with motility of frozen-thawed sperm in bulls
gene expression cryopreservation
2015/7/7
Heat shock protein 70 (HSP70) is considered as a gene which affects semen quality traits. The present study attempted to investigate the relationship between the HSP70 expression level and motility of...
Growth performance, carcass traits and meat quality of bulls and heifers slaughtered at different ages
meat quality Growth performance
2015/6/23
Older animals were generally fatter and their carcasses contained lower proportions of high-priced meat (P <
0.01) and bones (P < 0.05). Bulls exhibited lower contents of dry matter (P < 0...
Testicular Cell Indices and Peripheral Blood Testosterone Concentrations in Relation to Age and Semen Quality in Crossbred (Holstein Friesian×Tharparkar) Bulls
Fine Needle Aspiration Cytology Testicular Cytogram Testicular Cell Indices Crossbred Bulls
2016/5/17
Present study analyzed the changes in peripheral blood testosterone concentrations and testicular cytogram in relation to age and semen quality in crossbred males. Three different age groups of crossb...
Subfertility Problems Leading to Disposal of Breeding Bulls
Bull Disposal Subfertility Semen Quality Semen Freezability Prediction Equation
2016/5/11
Subfertility problems are encountered frequently in the cattle and buffalo bulls commercially maintained for semen production in dairy farms and under field conditions for natural insemination. Report...
The Effect of Various Concentrations of Taurine during In vitro Fertilization on the Development of Bovine Embryos Fertilized with Spermatozoa from Three Different Bulls
Taurine In vitro Fertilization Embryonic Development Bull Variation
2016/5/5
We investigated the effect of various concentrations of taurine during in vitro fertilization (IVF) on the embryonic development up to the blastocyst stage of bovine oocytes fertilized with three diff...
Muscle Fiber Characteristics and Their Relationship to Water Holding Capacity of Longissimus dorsi Muscle in Brahman and Charolais Crossbred Bulls
Cattle Brahman Charolais Muscle Fiber Characteristics Water Holding Capacity
2016/5/4
Muscle fiber characteristics and their relationship to water-holding capacity of longissimus dorsi (ld) muscle were studied in Brahman (BRA) and Charolais (CHA) crossbred bulls fattened under practica...
Carcass Characteristics and Chemical Composition of the Longissimus Muscle of Purunã and 1/2 Purunã vs. 1/2 Canchin Bulls Meat Quality of Bulls
Cattle, Crossbreed Fatty Acids Longissimus Muscle Meat Quality
2016/4/28
This work was conducted to study the performance, carcass characteristics, chemical composition and fatty acid profile of the Longissimus muscle (LM) of first-generation Purunã (n = 7, PUR1), sec...
A comparison of carcass proportions in Czech Pied and Montbeliarde bulls with a high carcass weight
Czech Pied Montbeliarde beef carcass value carcass composition
2015/6/1
The aim of the experiment was to compare the carcass composition of 20 Montbeliarde bulls (M) and 20 Czech Pied bulls (C). The carcass weight of the animals in one group varied minimally and was about...
Sub-indexes for bulls ofHolsteinbreed in theCzechRepublic
Holstein cattle bulls selection index sub-indexes production reproduction longevity fitness reliability genetic gain
2015/6/1
Sub-indexes were constructed for bulls of the Holstein breed according to groups of production traits – production index for milk (IPH), sub-indexes for reproduction (IRH), longevity (IDH), health res...