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Staphylococci are the main aetiological factor of bovine mastitis in many dairy herds. Traditionally, coagulase-negative staphylococci (CNS) were considered a normal skin microbiota. Lately the role of CNS in bovine mastitis has increased, as in some countries these pathogens had started to outnumber other mastitis aetiological factors. Given the scale of mastitis problems, the intensive use of antibiotics...
The aim of this study was to evaluate the trend of adrenocorticotrophic hormone (ACTH) and cortisol levels in mares during peripartum period. Twelve pregnant mares (Group A) were weekly monitored from the last 6 weeks before foaling (6BF-1BF) until the first 3 weeks after foaling (1AF-3AF). Twelve non-pregnant non-lactating mares constituted the control (Group B). Jugular blood samples were analyzed...
In the future an approach incorporating cows’ measured phenotypes and marker genotypes of cows and bulls within a single model can be applied. The most important advantage of such a model is the simultaneous use of pedigree and marker-based genomic relationship data. Such a solution allows the use of both genotyped and non-genotyped animals in the prediction procedure. This pilot study is aimed towards...
Reproduction is one of the basic biological functions in animals and humans. Due to the high biological relevance of reproduction and energy investment in their rearing offspring need to be of the best genetic quality and fitness to ensure preservation of the species. Both males and females employ mating strategies that would promote reproduction success and survival of their offspring. Choosing a...
Genetic parameters and genetic trends for the number of kits born alive (NBA), number of kits born dead (NBD) and the total number of born kits were estimated in Pannon Large rabbits. Using the REML method 12 single trait models were examined. Heritability estimates were low for all traits and ranged between 0.07-0.08 (with standard errors 0.018-0.021) for NBA (5830 records), 0.01-0.02 (0.009-0.009)...
In the future an approach incorporating cows’ measured phenotypes and marker genotypes of cows and bulls within a single model can be applied. The most important advantage of such a model is the simultaneous use of pedigree and marker-based genomic relationship data. Such a solution allows the use of both genotyped and non-genotyped animals in the prediction procedure. This pilot study is aimed towards...
The aim of the current study was to provide the updated knowledge about the influence of supplementation of pig diets with oil plants on the quality and nutritive value of pork meat. The use of feed rich in PUFAs in pig diet including plant oils, such as linseed, rapeseed or sunflower is beneficial for consumers health since these acids improve the dietetic value of meat. They especially increase...
The aim of the study was to determine the effect of two feeding systems (TMR - group I, pasture - group II) on physicochemical properties of milk, its suitability for making rennet cheese and butter, and sensory properties of these products. The study was conducted with second and third lactation Simmental cows between 30 and 200 days of lactation. Total milk yield for the lactation period was 6000...
The aim of this study was to examine whether and how different odorants placed on the bodies of female mice, but having no reward value for the males, affect courtship and mating behaviour of male mice towards females in oestrus and thus emitting female pheromones. In this manner, certain consequences of concurrent activation of the main olfactory system and the vomeronasal system were investigated...
Commercially available OptiXcell® extender was compared with conventional extenders for freezability and in vivo fertility of bull semen. Semen was collected from three Friesian bulls for five weeks (replicate) and qualifying ejaculates (motility >60%, concentration >0.5 billion/mL, volume >lmL) were diluted (37°C; 50 x 10⁶ spermatozoa/ml) with OptiXcell®, tris-citric egg yolk and egg yolk-citrate...
The effects of genetically modified (GM) soybean meal (SBM) and maize on the diversity and activity of microbiota inhabiting terminal gut segments in broiler chickens Were studied. Eight diets were prepared, based on conventional or GM SBM combined with maize cvs Clarica or PR39 F58, or their isogenic MON 810 counterparts cvs Bacilla or PR39 F56. Diets were fed from age 1 to 28 days to 144 Ross broilers,...
The objective of this study was to estimate genetic correlations of lactose percentage and urea concentration in milk with conformation traits related to udder and legs of Polish Holstein-Friesian cows. Data consisted of 5,813 test-day records and type scores of 791 primiparous cows. The analysis involved two descriptive traits (udder, feet and legs, scored from 50 to 100) and 11 linearly scored traits...
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