nlwxpearo
Joined: 13 Dec 2010
Posts: 520
Read: 0 topics
Warns: 0/5
Location: England
|
 Posted: Sat 22:07, 12 Feb 2011 Post subject: Two dairy farm analysis of clinical mastitis _345 |
|
|
,[link widoczny dla zalogowanych]
Two dairy farm analysis of clinical mastitis
Send brand-rate gradually increased (RR = 24). Although the area after which milk more than the previous incidence of breast area, but the difference from the first birth to second child, the fastest rate of increase (RR = no significant difference (P> 0.05). Executive theory, after I , 4). Seven fifty-sixth parity parity than low. More susceptible than B mammary inflammation. This is because their field of lactation second child, A market on the third, five-parity cows, the high, cold and other environmental factors of poor tolerance, and cattle in the first month of lactation has a high The clinical type of milk, and from the ground near to stain and damage. The incidence of urogenital room to death. Road and pollution is caused by the secretions of the digestive tract after the S & P Ho mammary infection results showed that about 55% of the cows CMT rate is another factor. On the open barn, each and bacteriology have maintained negative. 33% of the bovine mammary CMT a chance of contamination is equal, especially as B is positive (CMT + was 3l%, CMT + + 2), field like cattle pens. In the rainy season, but common throughout Dounong bacteriological negative. l2% positive bacteriology (4 colon pole of the mud. bacterium Streptococcus environment of 3%, 5% for other bacteria). Journal of the chain and the environment of E. coli bacteria in the clinical type} 42 {= m ~ amidships;. m buck one who Treatment of milk as the main measure of inflammation in the control experiment, Eberhart and Bucka | ew that the environment of E. coli and 68 caused by the temporary adoption of Streptococcus inflammation; by the Streptococcus agalactiae or Staphylococcus aureus clinical type caused by inflammation of 104. Smith et al study that eliminated in a herd of Streptococcus agalactiae, 62} J bed-type inflammation by E. coli or Streptococcus environmental health over No. J, the two share more than a fine Wei talk about equal. 3 cases by the coagulase-positive staphylococci E.coIi. was isolated from a clinical-type inflammation to the most common E. coli. This result consistent with many other reports. but there are K._P possession reports of common bacteria (Eberhart,[link widoczny dla zalogowanych], etc.). Pumping% of the clinical type of inflammation of dairy bacteriology weak,[link widoczny dla zalogowanych], similar to this and previous reports. 65 of these cases found in the beginning of the first three months of lactation. It was explained that these bacteria can not fish out the prevalence of mammary stem most of the large intestine caused by bacteria. Because these bacteria have been thrown against a small number of clear or the system can not be detected by conventional methods. Small number of cases may be caused by non-bacterial factors gi from (such as yeast, viruses). Lactation cows occurred in the same environment of two E. coli or Streptococcus mutans is a rare type of inflammation. Gonzalez so that this does not make hair j garland re-infection in cows more susceptible to calving or early lactation, cows are more prone to E. coli or Streptococcus agalactiae infection. This high susceptibility is due to neutrophil mobilization appears to lower the ability of the mother calving opsonic activity in milk is low, so that pathogens can include a large number of breeding. Late in the dry milk and colostrum period, low content of lactoferrin, neutral since phagocytosis may be low, which also contributed to the first 15 days of lactation-prone one of the factors with clinical inflammation. California dairy farm managers and veterinarians have reported that E. coli inflammation in the autumn and winter rainy multiple,[link widoczny dla zalogowanych], this study confirmed this. A recent report from Pennsylvania, that summer-type E. coli clinical inflammation in a closed herd of cattle is higher than the open. This difference is due to the litter closed barn contains large amounts of E. coli. Higher levels in somatic cells (> 7OO, 000 / ml) in cattle, Streptococcus agalactiae or Staphylococcus aureus clinical type caused by inflammation without seasonal phenomenon. From this research and the history of the two fields can be seen, long-term practice for infectious pathogens, Streptococcus agalactiae and Staphylococcus aureus control measures,[link widoczny dla zalogowanych], can lead to changes in the major pathogens. In the cattle farm, due to inflammation caused by environmental pathogens increase in infectious pathogens to replace the previous. Caused by environmental pathogens Wei-Yan-type embedded in a variety of clinical proportion has reached 60. Therefore, we must not forget that when dealing with the environment to consider microbial ecology knowledge Crown. E. coli for the control of inflammation, in addition to continuing efforts to reduce the number of pathogens in the environment, we must also consider other control measures, such as milk before dipping, vaccination health. coti. Vaccine, etc. Quoted} ~ JournalofDairyScience ~ Vo1.73, No. 3,1990 of: R. N. GONZALEZ, etc. Translator: surprised Songhua
The post has been approved 0 times
|
|
