A Investigation And Study On Subclinical Mastitis And Major Pathogenic Bacteria From Dairy Cow In Different Feeding Plan

As a result of the regional disparity and the cultivation custom and investment scale's difference, creates, even if in the identical area, cow's cultivation pattern is different. Present paper main research under Jinan Licheng area different raising pattern, mastitis's morbidity situation and main pathogenic bacteria situation, and pathogenic bacteria to antibiotic drug resistance research.Raising manages, the sole ownership large-scale scale cattle farm like Weiwei dairying pasture, the Yellow River pasture and so on, their cultivation environmental sanitation, the raising management level is in the advanced standard in the Licheng area, has the reasonable athletic field, and has the strict disinfection medicinal bath measure, has stably skilled, the technical quality high milker troop, and to secretes the cow to carry on the DHI determination. The large-scale cow plot or the cow cultivation specialized cooperative society, the environmental sanitation, the raising management are the medium levels basically, some non-athletic field, somewhat has, but the athletic field is generally small or the athletic field is unreasonable, the thick green fodder supplies are non-uniform, and transforms, the quantity to be also few frequently, milks when the personnel has exchanges, milks the horizontal ataxia. The cow plot frees-rang the peasant household pasture the environmental sanitation, the raising management level to be irregular, does not have the athletic field, some peasant households match the concentrated feed by the dried egg yolk corn straw, does not feed the thick green fodder, or unusual thick green fodder supplies, and transforms frequently, the non-medicinal bath measure, milks in the personnel besides the family member stable, other also when has exchanges, milks the horizontal ataxia. The cow mastitis puzzles one of cow industry economic efficiency primary causes. This sickness causes cow's performance trait to reduce, the dairy product qualitative change difference, the cow use age limit reduction and so on.This research is to discuss the course area different type cow breeding farm mastitis's morbidity condition and the main cause of disease regularity of epidemic, provides the science for mastitis's prevention and the treatment the basis. Through secretes the young herd to the Licheng area cattle farm to carry on the recessive mastitis HMT examination and the clinical mastitis's statistics, finally demonstrated: (1) Licheng area cow recessive mastitis masculine cow 1725 heads, masculine gender rate 47.5%; Masculine young area several 4280, young area masculine gender rate 29.8%. Clinical mastitis masculine cow 51 heads, masculine gender rate 1.4%; Masculine young area several 70, the young area masculine gender rate 0.5%, clinical the proportion which occupies in the mastitis is 1.6%; (2) the sole ownership large-scale formalization pasture recessive mastitis's head masculine gender rate (35.3%), the young area masculine gender rate (16.9%) obviously extremely (P < 0.01) is lower than the large-scale cow plot (67.4%, 42.9%), the cow plot to disperse the keeper of livestock pasture (64.0%, 46.8%), its clinical mastitis's young area masculine gender rate also with during latter the two difference remarkable (P < 0.05); Then between two pastures recessive mastitis's young area masculine gender rate difference remarkable (P < 0.05), masculine gender rate and clinical mastitis not obvious difference (P > 0.05). (3) besides the third quarter (guard period), second quarter's disease incidence rate extremely obviously is lower than other two quarters (P < 0.01), what moreover the new infection percentage is highest is the first quarter (56.4%, 32.6%) and the fourth quarter (52.8%, 34.7%). (4) the sole ownership large-scale scale pasture and the large-scale cow plot, the cow plot disperse between the keeper of livestock pasture the recessive mastitis's response intensity to have the extremely remarkable relations (P< 0.01), then the two also has extremely remarkable or the remarkable level (P < 0.05). (5) the recessive mastitis's formation rate and the raising management, the milking operation procedure, the environmental sanitation and the age, the lactation period, the birth rank, the milk production quantity has the very close relationship. And assumes the strong masculine young type and the clinical mastitis's young type to three kind of cultivation pattern cattle farm recessive mastitis HMT carries on the main disease germ's separation appraisal and the medicine sensitive experiment. Result demonstration: The sole ownership large-scale scale pasture, the large-scale cow plot, the cow plot disperse the keeper of livestock pasture the bacterium detection rate respectively are 75.7%, 68.2% and 71.4%, before only, the two difference remarkable (P < 0.05); And the sole ownership large-scale scale pasture's infectious bacterium, the environment bacterium and the large-scale cow plot, the cow plot disperse between the keeper of livestock pasture the difference extremely to be remarkable (P < 0.01), other bacteria and latter the two difference remarkable (P < 0.05). The large-scale cow plot, the cow plot disperse between the keeper of livestock pasture the above main germ not to achieve the remarkable level (P > 0.05); Simultaneously three pasture's infectious bacterium accounts for the proportion to be high, respectively is 37.7%, 48.5%, 46.3%, mainly causes by the golden yellow staphylococcus; Licheng area recessiveness, the clinical mastitis germ's detection rate respectively is 75.7%, 71.6%, both not remarkable (P > 0.05). Recessiveness with clinical mastitis's infectious bacterium, coagulative ferment negative staphylococcus infection percentage disparity not obvious (P > 0.05), the environment originates main cause of disease detection rate difference remarkable (P < 0.05), other bacterium's detection rate difference extremely is remarkable (P < 0.01); The sole ownership large-scale scale pasture (11.3%), the large-scale cow plot (17.2%) mixes the infection percentage difference obviously (P < 0.05), but they disperse the keeper of livestock pasture with the cow plot (13.7%) to mix the infection percentage not remarkable change (P > 0.05). Recessiveness (14.1%) with clinical mastitis (17.0%) the mixed infection also not obvious change (P > 0.05), both overwhelming majority purely causes by some kind of disease germ, the mixed infection situation is not serious. The medicine sensitive test result indicated that three kind of cultivation pattern cattle farm mastitis's main disease germ to the medicine sensitivity basic quite, to clinical use many penicillin, the chain mildew element, ammonia animal pen Xilin and compound prescription new Ming has the very big drug resistance, already basic invalid.