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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 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,...
Osteochondrosis is considered to be one of the most important problems in European sport horse breeding, as the frequency of OC(D) reaches 25% or more of investigated populations. The present article provides an overview of the genetic background of OC(D) evaluated in different countries. Heritability is low (0.1-0.3) and contemporary selection methods seem not to be sufficiently effective.New approaches...
Lactoferrin is an iron-binding protein present in many mammalian biological fluids, such as tears, saliva and milk, widely investigated due to its multiple activities. Human milk contains 1 to 5 mg of lactoferrin /ml, contrary to bovine milk, where lactoferrin concentration reaches maximum level of 0.1 mg/ml. Dramatic increase of lactoferrin content has been noticed in colostrum, mammary gland secretion...
Milk from cows with sub-clinical mastitis accidentally mixed into bulk milk enters food chain and poses a threat to human health. Milk and other dairy products are reported to be frequently infected with Staphylococcus aureus. Also Streptococcus agalactiae has been described as one of the most common agents of invasive infections. The present study was aimed at discussing the economy and public health...
Genes of retinol-binding protein 4 (RBP4), epidermal growth factor (EGF) and prostaglandin-endoperoxide synthase 2 (PTGS2) were examined as candidate genes for reproductive traits in sows. The material included a total of 300 sows of the Polish Landrace (n=86), Polish Large White (n=64)and commercial Line 990 (n=150). Included in the study was the total number of piglets born (TNB),number of piglets...
In 53 F1 sows (Zlotnicka Spotted boars × Polish Large White sows) the insulin-like growth factor 1 (IGF1) and estrogen receptor (ESR) genes were assessed as candidate genes for total number of piglets born (TNB), number of piglets born alive (NBA), litter weight at birth (LWB), litter weight at weaning (LWW), number of piglets weaned (NPW), average piglet weight at weaning (AWW) and gestation length...
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