PSIV-B-29 Evaluating the effect of different feeding strategies in feeding behavior through a novel behavior index integrating several components of the feeding behavior of finishing pigs

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 224-224
Author(s):  
Hector H Salgado ◽  
Steve Méthot ◽  
Aline Remus ◽  
Marie-Pierre Letourneau-Montminy ◽  
Candido Pomar
Keyword(s):  
Feeding Behavior ◽  
Analysis Of Variance ◽  
Feed Intake ◽  
Regression Line ◽  
Feeding Strategies ◽  
Finishing Pigs ◽  
Behavioral Sciences ◽  
The Impact ◽  
Effect Of Feeding ◽  
Behavior Index

Abstract Feeding behavior is an area of study that links the nutritional and behavioral sciences. However, describing the feeding behavior of pigs is difficult given the diversity of variables available and the large day-to-day intra-animal variation. The objectives of this study were to create an index integrating information from several components of feeding behavior that accounts for intra-animal variation, and to evaluate the capability of this index to study the impact of different feeding strategies in pigs’ feeding behavior. Feed intake information from 160 pigs during the last 28 days of the finishing phase from 3 datasets was used. For each pig, the sum of the absolute values of the deviation areas between the regression line of the relative cumulative feed intake and the observed cumulative feed intake was used to calculate the weekly index measuring the irregularity of feed intake (IIFI). Spearman’s correlations of IIFI with the number of daily meals (r = -0.42; P < 0.001), meal duration (r = 0.38; P < 0.01), and feed intake per meal (r = 0.41; P < 0.01) indicate that pigs with high IIFI have fewer meals of longer duration and higher feed intake compared to pigs with low IIFI. Analysis of variance in datasets 1 and 2 showed that moving from conventional to feeding precision systems does not interfere with the feeding behavior of finishing pigs (P > 0.05). In dataset 3, pig feeding behavior was more regular in control diets than for pigs fed fibrous diets (IIFI; 164 vs. 197, respectively; P < 0.05). Additionally, IIFI was smaller in pigs fed canola than in pigs fed wheat by-product diets. These results indicate that IIFI integrates information from several components of the feeding behavior of pigs and demonstrates its potential to evaluate the effect of feeding strategies on feeding behavior.

scholarly journals Elucidating the Impact of Feeding Behaviour on Body Composition in Finishing Pigs Fed Ad Libitum Using an Integrative Feeding Behaviour Index

2021 ◽  
Author(s):  
Hector Hernando Salgado ◽  
Steve Méthot ◽  
Aline Remus ◽  
Marie-Pierre Létourneau-Montminy ◽  
Candido Pomar
Keyword(s):  
Body Composition ◽  
Feeding Behavior ◽  
Feed Intake ◽  
Feeding Behaviour ◽  
Energy Regulation ◽  
Finishing Pigs ◽  
Large Variability ◽  
Ad Libitum ◽  
And Performance ◽  
The Impact

Abstract Background: Large variability in body composition is observed in pigs fed and raised in similar conditions. Part of this variation might be explained by the feeding behavior of pigs, given its effect on metabolic hormones associated with energy regulation and protein metabolism. The objective of this study was to elucidate this relationship by examining body composition with a new index describing feeding behavior in finishing pigs. Feeding behavior and body composition information on 138 pigs during the last 28 d of the growing phase from three trials were used. For each pig, the sum of the areas between the observed relative cumulative feed intake and the regression line for the evolution of relative feed intake over time was used to calculate the new feeding behavior index. This index quantifies the irregularity of feed intake (IIFI) by integrating different components of feeding behavior into a single measurement. Body lipids and protein composition were estimated by dual X-ray densitometry at the beginning (day 1) and end of the finishing phase (day 28). Results: Weak to moderate correlations (r = ±0.31 to ±0.44; P < 0.05) of IIFI with body composition and performance variables were found only in datasets 1 and 2. However, in dataset 2, IIFI was also correlated with daily feed intake (r = - 0.54; P < 0.001). Irregular feeding behavior is associated to increased proportion of protein (PdDG) and decreased proportion of lipids (LdDG) in body gain. However, IIFI only accounted for 8% to 14% and 10% to 12% of the total variation of PdDG and LdDG in datasets 2 and 1, respectively. Additionally, factor analysis showed that the number of meals and IIFI had high loadings in a factor separate from factors associated with body composition or performance, suggesting that body composition and performance are independent of feeding behavior. Conclusion: Factors other than feeding behavior might be involved in modulating body composition of finishing pigs fed ad libitum.

Effect of dietary leucine level on growth performance, and carcass and meat quality in finishing pigs

2003 ◽  
Vol 83 (2) ◽  
pp. 315-318 ◽  
Author(s):  
Y. Hyun ◽  
M. Ellis ◽  
F. K. McKeith ◽  
D. H. Baker
Keyword(s):  
Weight Gain ◽  
Key Words ◽  
Meat Quality ◽  
Soybean Meal ◽  
Feed Intake ◽  
Quality Characteristics ◽  
Finishing Pigs ◽  
Feeding Period ◽  
Feeding Diets ◽  
Effect Of Feeding

The effect of feeding corn-soybean meal-based diets with two levels of supplemental leucine (0 vs. 2%) on growth, carcass, and pork quality characteristics was evaluated in 40 individually fed finishing pigs over a 39-d feeding period (78.4 ± 3.46 to 114.8 ± 7.30 kg liveweight). Supplemental dietary leucine reduced weight gain (8.7%; P < 0.05), but had no effect (P > 0.05) on feed intake or gain:feed ratio. Feeding diets with 2% supplemental leucine increased (P < 0.05) longissimus fat content and marbling scores in both barrows and gilts. Key words: Finishing pigs, dietary leucine, intramuscular fat

scholarly journals A novel feeding behavior index integrating several components of the feeding behavior of finishing pigs

animal ◽  
2021 ◽  
Vol 15 (7) ◽  
pp. 100251
Author(s):  
H.H. Salgado ◽  
S. Méthot ◽  
A. Remus ◽  
M.P. Létourneau-Montminy ◽  
C. Pomar
Keyword(s):  
Feeding Behavior ◽  
Finishing Pigs ◽  
Behavior Index

scholarly journals PSV-18 The role of leptin in feed efficiency and behavior attributes of commercial beef heifers

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 162-162
Author(s):  
Nayan Bhowmik ◽  
Kris A Ringwall ◽  
Carl R Dahlen ◽  
Kendall C Swanson ◽  
Jeffrey A Clapper ◽  
...  
Keyword(s):  
Feeding Behavior ◽  
Breeding Season ◽  
Feed Intake ◽  
Feed Efficiency ◽  
Repeated Measures ◽  
Fixed Effects ◽  
Beef Heifers ◽  
Frame Size ◽  
And Behavior ◽  
Plasma Leptin

Abstract Leptin is a 16-kDa-peptide hormone product of the leptin gene (LEP) that is predominantly synthesized by adipose tissues and has known involvement in regulation of feed intake, energy expenditure, reproduction, and immune functions. The objective was to determine the association of leptin genotype (LEP c.73C &gt;T), leptin diplotype (LEPD) and plasma leptin hormone (LEPH) concentration with growth, feed intake, feed efficiency, and behavior characteristics in developing beef heifers. A total of 336 commercial beef heifers were genotyped for the LEP c.73C &gt;T marker. Four single nucleotide polymorphism markers including LEP c.73C &gt;T, ARS-BFGL-NGS-59298 (intron 1), BovineHD0400026029 (upstream) and BovineHD0400026063 (downstream) of LEP were considered for haplotype analysis. Eleven LEPD were identified for this study using parsimony-based analyses. Circulating levels of LEPH were measured on 333 heifers prior to their first breeding season and used to assign low or high concentration group based on population median. Data were analyzed using the mixed procedure of SAS for repeated measures, fixed effects of ancestral breed group (n = 4), dam age category (n = 4), frame size group (n = 4), project cycle nested within birth year (n = 6), week of feed trial × year, LEP (n = 3) or LEPD (n = 11) or LEPH (n = 2), as well as week × LEPH (only for LEPH). There were no significant differences between LEP genotypes (P ≥ 0.11) or LEPD (P ≥ 0.33) for any of the studied traits. Heifers with low LEPH ate fewer meals per day (P = 0.02) and had more DMI per meal (P = 0.04) compared to those with high plasma leptin. Further research is needed to better understand plasma LEPH concentration and its role in feeding behavior attributes. However, circulatory LEPH before the breeding season may serve as a predictor for feeding behavior.

Associations Between Parent–Child Communication and Connectedness, Parent Feeding Behavior, and Child Body Mass in Pre-Adolescent Children

2020 ◽  
Author(s):  
Kristina D Lowe ◽  
Mark A Lott ◽  
Chad D Jensen
Keyword(s):  
Feeding Behavior ◽  
Body Mass ◽  
Weight Status ◽  
Community Sample ◽  
Feeding Strategies ◽  
Feeding Behaviors ◽  
Parent Child Communication ◽  
Parental Feeding ◽  
Parent Feeding ◽  
Parent Child

Abstract Objective  This study evaluated associations between parent–child connectedness and communication, parent feeding behaviors (restriction, pressure to eat, and monitoring), and age- and sex-standardized child body mass index (zBMI) in a sample of pre-adolescent children aged 8–12 years. Methods  A community sample of three hundred and eight child–parent dyads completed measures of communication and connectedness. Parents completed a feeding behavior measure and children were weighed and their height was measured. We examined whether parental feeding behaviors and parent–child communication and connectedness predicted child zBMI and whether parental feeding behaviors moderated the association between parent–child communication and connectedness and child zBMI. Results  Feeding restriction was positively associated with zBMI, while both pressure to eat and food monitoring exhibited negative associations with zBMI. Child-reported communication was inversely associated with zBMI and parental pressure to eat moderated this association such that lower pressure to eat predicted a stronger association between communication and zBMI. Conclusions  These findings are consistent with previous research suggesting that parent feeding strategies and parent–child communication are important contributors to child weight status. This study also provides preliminary evidence suggesting that adaptive parent–child communication is associated with lower body mass when parents avoid pressuring their child to eat. Our study provides an important extension of this body of research into middle childhood, a relatively understudied developmental stage.

PSIII-11 Evaluating the Performance of Grow-finish Pigs Supplemented with Butipearl® Z and Kemtrace® Chromium During Natural Heat Stress Exposure

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 174-174
Author(s):  
Mark Knauer ◽  
Venkatesh Mani ◽  
Tom Marsteller ◽  
Vanessa Iseri ◽  
Brian Kremer
Keyword(s):  
Heat Stress ◽  
Feed Intake ◽  
Heat Exposure ◽  
Muscle Growth ◽  
Negative Control ◽  
Intestinal Damage ◽  
Intestinal Health ◽  
Negative Effects ◽  
Curvilinear Relationships ◽  
The Impact

Abstract Heat stress (HS) severely impacts swine leading to compromised barrier integrity, diminished intestinal health and decreased performance. ButiPEARL® Z (BPZ) is an encapsulated formulation of zinc and butyrate shown to alleviate the impact of HS by improving intestinal health. KemTRACE® Chromium (KTCr) is an organic trace mineral shown to decrease the impact of stress and improve glucose utilization, leading to muscle growth and improved performance. To test the efficacy of BPZ and KTCr on mitigating stress from natural heat exposure, a grow-finish trial was conducted from June-September. There were four treatments: negative control (NC), NC+.45kg BPZ, NC+.91kg BPZ and NC+1.82kg BPZ. Three BPZ treatments were also supplemented with 200ppb KTCr. Pigs (n=480) were randomly assigned to 96 pens at 22.5kg. Performance was measured at d0, 28, 56 and at marketing. From d56 to market, ADFI was greater (P&lt; 0.05) for 0.45kg and 0.91kg BPZ when compared to NC and 1.82kg BPZ (3.40 and 3.35 vs. 3.26 and 3.27kg, respectively). Therefore, relationships between ADFI day 56 to market and ADFI day 0 to market with BPZ level were curvilinear (P&lt; 0.05). Both market weight and overall ADG tended (P&lt; 0.10) to have curvilinear relationships with BPZ level. While not different, 0.45kg and .91kg BPZ supplemented pigs were .97kg and 1.25kg heavier, respectively, on marketing day compared to control. No differences (P &gt;0.10) were observed for Feed:Gain. Part of the negative effects of HS include decrease in feed intake which contributes to intestinal damage and decreased performance. Data from this study show that both treatment combinations were able to improve feed intake and decrease stress which might have led to the improved weight gain at the end. The data provides evidence that the combination of BPZ and KTCr may alleviate the negative effects of HS and help with the performance of grow-finish pigs during heat stress.

Effects of Feeding Systems on Social and Feeding Behavior and Performance of Finishing Pigs

1987 ◽  
Vol 65 (2) ◽  
pp. 463-474 ◽  
Author(s):  
J. Vargas Vargas ◽  
J. V. Craig ◽  
R. H. Hines
Keyword(s):  
Feeding Behavior ◽  
Finishing Pigs ◽  
And Performance ◽  
Feeding Systems

scholarly journals Claw health and feed efficiency as new selection criteria in the Czech Holstein cattle Krupová Z., Wolfová M., Krupa E., Přibyl J., Zavadilová L.

2018 ◽  
Vol 63 (No. 10) ◽  
pp. 408-418 ◽  
Author(s):  
Z. Krupová ◽  
M. Wolfová ◽  
E. Krupa ◽  
J. Přibyl ◽  
L. Zavadilová
Keyword(s):  
Feed Intake ◽  
Feed Efficiency ◽  
Disease Incidence ◽  
Selection Index ◽  
Residual Feed Intake ◽  
Selection Response ◽  
Holstein Cattle ◽  
Breeding Objective ◽  
Economic Weights ◽  
The Impact

The objective of this study was to calculate economic weights for ten current breeding objective traits and for four new traits characterising claw health and feed efficiency in Czech Holstein cattle and to investigate the impact of different selection indices on the genetic responses for these traits. Economic weights were estimated using a bio-economic model, while applying actual (2017) and predicted (2025) production and economic circumstances. For the actual situation, the economic weights of claw disease incidence were –100.1 € per case, and those of daily residual feed intake in cows, breeding heifers, and fattened animals were –79.37, –37.16, and –6.33 €/kg dry matter intake per day, respectively. In the predicted situation, the marginal economic weights for claw disease and feed efficiency traits increased on average by 38% and 20%, respectively. The new traits, claw disease incidence and daily residual feed intake, were gradually added to the 17 current Holstein selection index traits to improve the new traits. Constructing a comprehensive index with 21 traits and applying the general principles of the selection index theory, a favourable annual genetic selection response was obtained for the new traits (–0.008 cases of claw disease incidence and –0.006 kg of daily residual feed intake across all cattle categories), keeping the annual selection response of the most important current breeding objective traits at a satisfactory level (e.g., 73 kg of milk yield per lactation, 0.016% of milk fat). Claw health and feed efficiency should be defined as new breeding objectives and new selection index traits of local dairy population.

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