About: Associations between passive immunity and morbidity and mortality in dairy heifers in Florida, USA

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About: Associations between passive immunity and morbidity and mortality in dairy heifers in Florida, USA Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : wasabi.inria.fr associated with source document(s)

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	Associations between passive immunity and morbidity and mortality in dairy heifers in Florida, USA
Creator	Dohoo, Ian Montgomery, David Bennett, Fred Donovan, G
Source	Elsevier; Medline; PMC
abstract	Abstract A prospective cohort study was undertaken to determine calf-level factors that affected calf health status between birth and 6 months of age. A convenience sample of approximately 3300 female Holstein calves born in 1991 on two large Florida dairy farms was used for the study. Data collected on each calf at birth included farm of origin, weight, height at the pelvis, birth date, and serum total protein (a measure of colostral immunoglobulin absorption). Birth season was dichotomized into summer and winter using meteorological data collected by University of Florida Agricultural Research Stations. Health data including date of initial treatment and number of treatments were collected for the diseases diarrhea, omphalitis, septicemia and pneumonia. All calves were followed for 6 months. Cumulative incidences of mortality and occurrence of diarrhea, omphalitis, septicemia and pneumonia were 0.12, 0.35, 0.11, 0.24 and 0.21, respectively. Serum total protein (TP) was a significant risk factor for mortality. The association of TP and mortality was quadratic and showed a dramatic decrease in mortality as TP increased from 4.0 to 5.0 g/dl, a small improvement from 5.0 to 6.0 g/dl and virtually no improvement in mortality rates as TP increased over 6.0 g/dl. The hazard mortality ratio was constant from birth to six months, indicating that the increased risk of mortality associated with low levels of TP was evident through six months of age. No interactions between TP, farm, season, or birth weight were found in these analyses. Serum total protein concentration was a significant risk factor for the occurrences, age of onset and severity of septicemia and pneumonia. The association between TP and septicemia was linear and an interaction with birth season was found. The association between TP and pneumonia was quadratic, and in contrast to the TP-and-septicemia relationship, the morbidity hazard ratio for pneumonia was not constant over the time measured; that is, colostral immunity protected the calf from developing pneumonia early in life, but this effect disappeared as the calf got older. Total protein was not a significant risk factor for diarrhea or omphalitis.
has issue date	1998-02-06(xsd:dateTime)
bibo:doi	10.1016/s0167-5877(97)00060-3
bibo:pmid	9541949
has license	els-covid
sha1sum (hex)	03aa0556aa6d712feb40fd557a3c0fd98338beda
schema:url	https://doi.org/10.1016/s0167-5877%2897%2900060-3
resource representing a document's title	Associations between passive immunity and morbidity and mortality in dairy heifers in Florida, USA
has PubMed Central identifier	PMC7134088
has PubMed identifier	9541949
schema:publication	Preventive Veterinary Medicine
resource representing a document's body	covid:03aa0556aa6d712feb40fd557a3c0fd98338beda#body_text
is schema:about of	named entity 'FLORIDA' named entity 'early' named entity 'meteorological' named entity 'morbidity' named entity 'IMPROVEMENT' named entity 'INTERACTIONS' named entity 'OCCURRENCES' named entity 'CONTRAST' named entity '0.24' named entity 'DEVELOPING' named entity 'PROTEIN ' named entity 'APPROXIMATELY' named entity 'LEVEL' named entity 'HOLSTEIN' named entity 'FOLLOWED' named entity 'LINEAR' named entity 'FARM' named entity 'VETERINARY MEDICINE' named entity 'PROTEIN CONCENTRATION' named entity '3300' named entity 'DETERMINE' named entity 'FOUND' named entity 'DAIRY' named entity 'PELVIS' named entity 'COLLECTED' named entity 'DATA COLLECTED' named entity 'DATE OF INITIAL TREATMENT' named entity 'WINTER' named entity 'FLORIDA' named entity 'STUDY' named entity 'AFFECTED' named entity 'RELATIONSHIP' named entity 'OMPHALITIS' named entity 'INDICATING' named entity 'TIME' named entity 'THE CALF' named entity 'ASSOCIATIONS' named entity '0.12' named entity 'HAZARD' named entity 'ABSORPTION' named entity 'MORTALITY RATES' named entity 'RISK FACTOR' named entity 'TOTAL PROTEIN' named entity 'DIARRHEA' named entity 'RISK OF' named entity 'DAIRY' named entity 'DISEASES' named entity 'SMALL' named entity 'FEMALE' named entity 'PNEUMONIA' named entity 'IMMUNOGLOBULIN' named entity 'BORN' named entity 'AT BIRTH' named entity 'USA' named entity 'MORBIDITY AND MORTALITY' named entity 'ORIGIN' named entity 'INCLUDED' named entity 'CALF' named entity 'ASSOCIATION' named entity 'WAS A' named entity 'EFFECT' named entity 'QUADRATIC' named entity 'BIRTH DATE' named entity 'RATIO' named entity 'WEIGHT' named entity 'IMMUNITY' named entity 'SERUM TOTAL PROTEIN' named entity 'INCREASED RISK' named entity 'AGE OF ONSET' named entity 'SUMMER' named entity 'EARLY' named entity 'LEVELS' named entity 'SCIENCE' named entity '0.35' named entity 'INTERACTION' named entity 'NUMBER OF TREATMENTS' named entity 'AGRICULTURAL' named entity 'MORBIDITY'

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