Characterization of feed intake patterns during lactation in commercial swine herds

This study created and used a database containing 25,719 farrowing and 19,393 subsequent litter records abstracted from the PigCHAMP records of 30 commercial farms and daily feed intake records of 25,040 of these lactating sows. Each lactation feed record was categorized into one of six patterns: RA...

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Bibliographic Details
Published in:Journal of animal science 1996-06, Vol.74 (6), p.1202-1210
Main Authors: Koketsu, Y. (University of Minnesota, St. Paul, MN.), Dial, G.D, Pettigrew, J.E, Marsh, W.E, King, V.L
Format: Article
Language:English
Subjects:
Animal Husbandry - statistics & numerical data
Animal productions
Animal reproduction
Animals
Biological and medical sciences
CERDAS
COMPORTEMENT ALIMENTAIRE
Computer Simulation
Databases, Factual
DURACION DE LA LACTANCIA
DUREE DE LA LACTATION
Eating - physiology
EPOCA DE APAREAMIENTO
Feeding Behavior - physiology
Feeds
Female
Fundamental and applied biological sciences. Psychology
GESTATION MULTIPLE
HABITOS ALIMENTARIOS
Hogs
Information Systems
INGESTION DE PIENSOS
IOWA
LACTACION
LACTATION
Lactation - physiology
LARD GRAS
Litter Size
MINNESOTA
Models, Biological
NUMERO DE LACTACION
NUMERO DE LACTATION
Parity
PARTO
PARTOS MULTIPLES
PARTURITION
PESO
POIDS
PRISE ALIMENTAIRE (ANIMAUX)
Records - veterinary
Regression Analysis
Risk Factors
SAISON D'ACCOUPLEMENT
Seasons
Swine - physiology
TAILLE DE LA PORTEE
TAMANO DE LA CAMADA
Temperature
Terrestrial animal productions
TOCINO DORSAL
TRUIE
Vertebrates
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Summary:This study created and used a database containing 25,719 farrowing and 19,393 subsequent litter records abstracted from the PigCHAMP records of 30 commercial farms and daily feed intake records of 25,040 of these lactating sows. Each lactation feed record was categorized into one of six patterns: RAPID, rapid increase in feed intake following farrowing; MAJOR, major drop in feed intake during lactation; MINOR, minor drop; LLL, low feed intake throughout lactation; LHH, low feed intake during the first week then increasing for the remainder of lactation; and GRADUAL, gradual increase in feed intake throughout lactation. At the herd level, patterns RAPID, MAJOR, MINOR, LLL, LHH, and GRADUAL were observed in 22.8%, 32.9%, 27.8%, 1.0%, 0.8%, and 14.7% of sows, respectively. On a sow basis, across all feed intake records of all farms, patterns RAPID, MAJOR, MINOR, LLL, LHH, and GRADUAL were observed at frequencies of 17.8%, 38.3%, 25.8%, 1.2%, 1.5%, and 15.4%, respectively. Using logistic regression, the risk factors affecting the occurrence of MAJOR and MINOR patterns were lower parity, thicker backfat, higher room temperature, and greater feed intake during early lactation. Average daily feed intake and the day of peak intake were 5.2 (1.4 SD) kg/sow and 12.6 (4.6 SD) d after farrowing. Regression coefficients of factors affecting ADFI derived from multiple regression analyses were 247 g for parity, 9 g for weaning litter weight (kg), -13 g for room temperature (degrees C), 62 g for lactation length (d), and -.4 g for energy density (kcal/kg). This study demonstrated substantial individual sow and farm variation in overall feed intake and pattern of feed intake during lactation. It also identified key risk factors (i.e., parity, lactation length, room temperature, weaning litter weights, energy density) for ADFI and pattern of feed intake on commercial farms
ISSN:0021-8812
1525-3163
0021-8812
DOI:10.2527/1996.7461202x