EurekaMag
+ Most Popular
Cunninghamia lanceolata plantations in China
Mammalian lairs in paleo ecological studies and palynology
Studies on technological possibilities in utilization of anhydrous milk fat for production of recombined butter-like products
Should right-sided fibroelastomas be operated upon?
Large esophageal lipoma
Apoptosis in the mammalian thymus during normal histogenesis and under various in vitro and in vivo experimental conditions
Poissons characoides nouveaux ou non signales de l'Ilha do Bananal, Bresil
Desensitizing efficacy of Colgate Sensitive Maximum Strength and Fresh Mint Sensodyne dentifrices
Administration of fluid by subcutaneous infusion: revival of a forgotten method
Tundra mosquito control - an impossible dream?
Schizophrenia for primary care providers: how to contribute to the care of a vulnerable patient population
Geochemical pattern analysis; method of describing the Southeastern limestone regional aquifer system
Incidence of low birth weights in a hospital of Mexico City
Tabanidae
Graded management intensity of grassland systems for enhancing floristic diversity
Microbiology and biochemistry of cheese and fermented milk
The ember tetra: a new pygmy characid tetra from the Rio das Mortes, Brazil, Hyphessobrycon amandae sp. n. (Pisces, Characoidei)
Risk factors of contrast-induced nephropathy in patients after coronary artery intervention
Renovation of onsite domestic wastewater in a poorly drained soil
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Systolic blood pressure in a population of infants in the first year of life: the Brompton study
Haematological studies in rats fed with metanil yellow
Studies on pasteurellosis. I. A new species of Pasteurella encountered in chronic fowl cholera
Dormancy breaking and germination of Acacia salicina Lindl. seeds
therapy of lupus nephritis. a two-year prospective study

Feeding behavior of growing and finishing pigs fed different dietary threonine levels in a group-phase feeding and individual precision feeding system


Feeding behavior of growing and finishing pigs fed different dietary threonine levels in a group-phase feeding and individual precision feeding system



Translational Animal Science 4(4): txaa177



ISSN/ISBN: 2573-2102

PMID: 33196014

DOI: 10.1093/tas/txaa177

Feeding behavior is an important aspect of pig husbandry as it can affect protein deposition (PD) in pigs. A decrease in plasma threonine (Thr) levels may influence feed intake (FI) due to amino acid imbalance. We set out to study whether different Thr inclusion rates of 70%, 85%, 100%, 115%, and 130% of the ideal Thr:lysine (Lys) ratio of 0.65 in two different feeding programs (individual precision feeding and group-phase feeding could affect pig feeding behavior and consequently PD. Two 21-d trials were performed in a 2 x 5 factorial setup (feeding systems x Thr levels) with 110 pigs in the growing phase [25.0 +/- 0.8 kg of body weight (BW)] and 110 pigs in the finishing phase (110.0 +/- 7.0 kg BW), which correspond to 11 pigs per treatment in each trial. Pigs were housed in the same room and fed using computerized feeding stations. The total lean content was estimated by dual x-ray absorptiometry at the beginning (day 1) and the end (day 21) of the trial. Multivariate exploratory factor analysis was performed to identify related variables. Confirmatory analysis was performed by orthogonal contrasts and Pearson correlation analysis. Graphical analysis showed no difference in feeding patterns between feeding systems during the growing or finishing phase. Pigs exhibited a predominant diurnal feeding, with most meals (73% on average) consumed between 0600 and 1800 h. Exploratory factor analysis indicated that feeding behavior was not related to growth performance or PD in growing or finishing pigs. Changes in feeding behavior were observed during the growing phase, where increasing dietary Thr resulted in a linear increase in the FI rate (P < 0.05). During the finishing phase, the duration of the meal and FI rate increased linearly as dietary Thr increased in the diet (P < 0.05). These changes in feeding behavior are, however, correlated to BW. In conclusion, the exploratory factor analysis indicated that feeding behavior had no correlation with growth performance or protein and lipid deposition in growing or finishing pigs. Dietary Thr levels and feeding systems had no direct effect on FI.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 071094052

Download citation: RISBibTeXText

Related references

The Ideal Dietary Protein Profile for Finishing Pigs in Precision Feeding Systems and Phase Feeding Systems: Threonine. Journal of Animal Science 96: 110, 2018

The Ideal Dietary Protein Profile for Finishing Pigs in Precision Feeding Systems and Phase Feeding Systems: Threonine. Journal of Animal Science 96: 110-110, 2018

Feeding behavior of growing-finishing pigs reared under precision feeding strategies. Journal of Animal Science 94(7): 3042-3050, 2016

Pigs receiving daily tailored diets using precision-feeding techniques have different threonine requirements than pigs fed in conventional phase-feeding systems. Journal of Animal Science and Biotechnology 10: 16, 2019

The feeding behavior of group-housed pigs using a computerized individual feeding system. Animal Science and Technology 64(5): 455-461, 1993

Effect of dietary energy levels and phase feeding by protein levels on growth performance, blood profiles and carcass characteristics in growing-finishing pigs. Journal of Animal Science and Technology 58: 37, 2016

Effect of dietary energy levels and phase feeding by protein levels on growth performance, blood profiles and carcass characteristics in growing-finishing pigs. Journal of Animal Science and Technology 58(10): 1-10, 2016

The impact of feeding growing-finishing pigs with daily tailored diets using precision feeding techniques on animal performance, nutrient utilization, and body and carcass composition. Journal of Animal Science 92(9): 3925-3936, 2014

A comparison between feeding a single diet or phase feeding a series of diets, with either the same or reduced crude protein content, to growing finishing pigs. Animal Science 81: 297-303, 2005

Digestible lysine levels for growing-finishing pigs based on split-sex and phase feeding. Canadian Journal of Animal Science 75(4): 650, 1995

The ideal protein profile for late-finishing pigs in precision feeding systems: Threonine. Animal Feed Science and Technology 265: 114500, 2020

Effect of pelleting and feeding level on apparent digestibility and feeding value of diets for growing-finishing pigs. Animal Feed Science and Technology 45(3/4): 349-362, 1993

Effects of fixed level or restricted feeding compared to ad libitum feeding on growing/finishing pigs. Journees de la Recherche Porcine en France 31: 239-247, 1999

Feeding behaviour and zootechnical results in two housing systems with liquid feeding for growing-finishing pigs. Journees de la Recherche Porcine en France 28: 181-188, 1996

Effect of pelleting and feeding level on apparent digestibility and feeding value of diets for growing-finishing pigs. Animal Feed Science and Technology 45(3-4): 349-362, 1994