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.

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 &lt; 0.001), meal duration (r = 0.38; P &lt; 0.01), and feed intake per meal (r = 0.41; P &lt; 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 &gt; 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 &lt; 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.

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

509 Late-Breaking: Effect of a Sensory Additive on Sow Reproductive Performance

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 206-206
Author(s):  
Nathan Davis ◽  
Tsungcheng Tsia ◽  
Benjamin Bass ◽  
Gemma Tedo ◽  
Sofia Morais ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Feed Intake ◽  
Random Effect ◽  
Body Weight Change ◽  
Lactation Performance ◽  
Thickness Change ◽  
Breaking Effect ◽  
Ad Libitum ◽  
Sow Lactation ◽  
The Impact

Abstract The addition of a sensory additive to sow diets during the summer improved feed intake during lactation, and litter performance. The aim of this study was to evaluate the impact of the sensory additive on sow lactation performance during cooler temperatures. Three consecutive groups (n = 61 total) of sows were farrowed during winter (October, December and January). Sows were weighed, and back fat depth was measured, at 110 d of gestation prior to entering the lactation room, and again at weaning. The sows were sorted by parity, and then allotted by BW at d 110 to Control or 0.075% sensory additive (Luctamax® SowVive, Lucta S.A., Spain). Experimental diets were offered upon entry to the lactation room and fed through weaning. Feed disappearance was recorded every three days. Sows were fed 2.72 kg/head/day until farrowing, and then allowed to eat ad libitum from 24 hours post-farrowing until weaning. Data were analyzed using the PROC MIXED procedure of SAS as an RCBD with treatment as the fixed effect and group as a random effect. No differences were observed on sows feed intake (P &gt; 0.4), 10th rib backfat thickness change (P = 0.632) and body weight change from d 110 of gestation to weaning (P = 0.65, Table 1). Sows fed the sensory additive lowered preweaning mortality by 4.9% (P = 0.051), and weaned an additional 1.42 piglets (P = 0.026) with similar weaning weights (P = 0.86) when compared to control. In conclusion, in the current study, lactation diets supplemented with a sensory additive improved litter performance and helped maintain sow body condition.

The effect of using fibrous feeds as nutrient diluents on the carcass quality and performance of finishing pigs fed ad libitum

1992 ◽  
Vol 1992 ◽  
pp. 10-10
Author(s):  
B P Gill ◽  
A G Taylor ◽  
B Hardy ◽  
J G Perrott
Keyword(s):  
Sugar Beet ◽  
Growing Pigs ◽  
Sugar Beet Pulp ◽  
Eating Quality ◽  
Carcass Quality ◽  
Finishing Pigs ◽  
Meat Eating ◽  
Beet Pulp ◽  
Ad Libitum ◽  
And Performance

Satisfactory levels of performance and improved carcass and meat eating quality in growing pigs fed high levels of sugar beet pulp (SBP) have been recently demonstrated by Kay et al. (1990) and Longland et al. (1991). One of the main advantages from feeding SBP was a reduction in carcass fatness and increased returns from improved grading. The objective of this work was to determine whether these benefits could be sustained to heavier finishing weights and to compare differences in the response to SBP as a source of readily fermentable non-starch polysaccharides (NSP) and to oat feed (OF), a cereal by-product high in insoluble NSP, which is less easily degraded.

RESPONSE OF GROWING-FINISHING PIGS TO DIETARY INCLUSION OF GREEN FOXTAIL (Setaria viridis) SEEDS

1984 ◽  
Vol 64 (4) ◽  
pp. 1063-1066
Author(s):  
A. G. CASTELL
Keyword(s):  
Growth Rate ◽  
Feed Intake ◽  
Feed Efficiency ◽  
Growing Pigs ◽  
Carcass Composition ◽  
Apparent Digestibility ◽  
Finishing Pigs ◽  
Setaria Viridis ◽  
Green Foxtail ◽  
Ad Libitum

Increasing the level of wheat screenings (95% green foxtail seeds) from 0 to 25% in diets fed ad libitum over the period from 34 to 89 kg liveweight resulted in an increased daily feed intake (P < 0.05), reduced (P < 0.05) feed efficiency and apparent digestibility, but produced no consistent effects on growth rate or carcass composition. Key words: Growing pigs, green foxtail, Setaria viridis, carcass, digestibility

Effects of number and siting of single-space feeders on performance and feeding behaviour of growing pigs

1994 ◽  
Vol 122 (3) ◽  
pp. 465-470 ◽  
Author(s):  
A. T. S. Morrow ◽  
N. Walker
Keyword(s):  
Growth Rate ◽  
Feed Intake ◽  
Feeding Behaviour ◽  
Agricultural Research ◽  
Block Design ◽  
Growing Pigs ◽  
Feed Conversion ◽  
Randomized Block Design ◽  
Ad Libitum ◽  
Number Of Visits

SUMMARYTwo experiments of randomized block design were carried out at the Agricultural Research Institute of Northern Ireland in 1991/92 involving groups of 20 pigs fed ad libitum from single-space feeders with built-in water supply from 37 kg to slaughter at 91 kg liveweight.Treatments were replicated 16 and 6 times respectively in Experiments 1 and 2. In the first experiment, one feeder perpen was compared with two feeders per pen positioned side by side. Two feeders increased feed intake (P < 0·05) but had no significant effects on growth rate or feed conversion. With two feeders, the total time that feeders were occupied and the number of visits to feeders were both increased, while the number of enforced withdrawals from feeders and the amount of queuing were both decreased compared with the single feeder. In the second experiment, placing two feeders 2 m or more apart instead of side by side had no significant effects on feed intake or growth rate but improved feed conversion efficiency by 4%. This improvement was associated with fewer and longer visits to feeders but no difference in enforced withdrawals or queuing. In both experiments all treatments showed broadly similar patterns of diurnal feeding behaviour with two peaks of activity daily, a smaller peak pre-midday and a larger one in the afternoon. This pattern was influenced more by number of visits to feeders than by the mean duration of each visit. It is recommended that two single-space feeders are used in pens of 20 finishing pigs when non-pelleted diets are offered ad libitum and that feeders are sited some distance apart, not side by side.

Effects of dry period diet on feed intake, body composition and subsequent lactational performance of dairy cows

1996 ◽  
Vol 1996 ◽  
pp. 4-4
Author(s):  
R.J. Dewhurst ◽  
D.W.R. Davies ◽  
W.J. Fisher ◽  
K. Aston
Keyword(s):  
Body Composition ◽  
Dairy Cows ◽  
Feed Intake ◽  
Milk Protein ◽  
Access Time ◽  
Dry Period ◽  
Grass Silage ◽  
Lactational Performance ◽  
Forage Intake ◽  
Ad Libitum

Previous studies (Moorbyet al, 1994) have shown that supplementing grass silage with undegradable protein (UDP) during the dry period can lead to increased yields of milk protein and lactose. These studies have often involved restriction of forage intake through limitation of access time and the feeding of straw. This experiment was conducted to assess the effect of UDP supplementation withad libitumaccess to grass silage as well as the effects of restricting forage intakes by including straw in the diets of dry cows.

scholarly journals Meta-analysis on the effects of the physical environment, animal traits, feeder and feed characteristics on the feeding behaviour and performance of growing-finishing pigs

animal ◽  
2012 ◽  
Vol 6 (8) ◽  
pp. 1275-1289 ◽  
Author(s):  
X. Averós ◽  
L. Brossard ◽  
J.Y. Dourmad ◽  
K.H. de Greef ◽  
S.A. Edwards ◽  
...  
Keyword(s):  
Physical Environment ◽  
Feeding Behaviour ◽  
Meta Analysis ◽  
Finishing Pigs ◽  
And Performance
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