Intramammary Infections in Primigravid Heifers Near Parturition
نویسندگان
چکیده
منابع مشابه
Intramammary infections during the periparturient period in Argentine dairy heifers.
Prevalence of intramammary infections at prepartum and postpartum in primigravid heifers from five dairy herds located in the central dairy area of Argentina was determined. Mammary secretion samples from 140 heifers (560 mammary quarters) were obtained 14 days prior to the expected calving day and within 7 days after parturition and subjected to bacteriological analysis. No clinical mastitis c...
متن کاملChanges in Pelvic Area and Cervical Dilation near Parturition in Brahman Cows and First-calf Heifers
متن کامل
Pregnancy, parturition, and lactation in hypophyseal stalk-transected beef heifers.
Progesterone secretion is crucial for maintaining pregnancy to parturition in mammalian species, and in cattle the corpus luteum is the primary source of this hormone. This study determined the roles of prolactin (PRL), growth hormone (GH) and luteinizing hormone (LH) in the luteotropic process in beef heifers hypophyseal stalk-transected (HST, n=7) or sham operated (sham operated controls, SOC...
متن کاملHost adapted intramammary infections in pregnant heifers which were co-housed and reared on fresh milk as calves
BACKGROUND Heifers can calve down with intramammary infections (IMI) and udder damage. This will have a negative impact on their longevity, future milk yield and financial return. Co-housed pre-weaned calves that are fed fresh milk have the opportunity to suckle each other's teats and may infect udders of fellow heifer calves with pathogens present in milk. The prevalence of IMI in pregnant hei...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1983
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(83)81916-x