scholarly journals The rabbit pup, a natural model of nursing-anticipatory activity

2009 ◽  
Vol 30 (9) ◽  
pp. 1697-1706 ◽  
Author(s):  
Mario Caba ◽  
Gabriela González-Mariscal
Keyword(s):  
Anticipatory Activity

scholarly journals Behavioral and stress responses to feeding time in pregnant sows under limit-fed regime

2021 ◽  
Author(s):  
Hayford Manu ◽  
Suhyup Lee ◽  
Mike C Keyes ◽  
Jim Cairns ◽  
Samuel K Baidoo
Keyword(s):  
Stress Responses ◽  
Area Under The Curve ◽  
Total Activity ◽  
Study Data ◽  
Experimental Unit ◽  
Feeding Time ◽  
Feeding Schedule ◽  
Activity Count ◽  
Anticipatory Activity ◽  
Total P

Abstract We investigated the effect of feeding time on behavior and stress responses in pregnant sows under isocaloric conditions. Twenty-four sows were balanced for parity and randomly assigned to 1 of 3 feeding times. Corn-soybean meal-based diet was fed once at: 0730 (Control, T1), 1130 (T2), and 1530 h (T3). On average, sows received 7062 kcal ME/d from 2.20 kg of diet formulated to contain SID Lys/ME of 1.71 g/Mcal. The study was conducted for 28 days (21 d acclimation to the feeding regime and 7 days data collection). Saliva samples were collected every 2 hours for 12 hr in stalls on day 52 of pregnancy. Behavior data were collected 24 hr for 7 d from day 53 of gestating by affixing a remote insights ear tag to each sow. Each sow had 120,960 data points categorized into: "Active", "Feed" or "Dormant". Due to housing constraint, all sows were housed in individual stalls in the same barn presenting a potential limitation of the study. Data were analyzed using PROC MIXED and GLIMMIX procedures of SAS 9.4 for cortisol and behavior data, respectively. Sow was the experimental unit. The area under the curve (AUC) is quantitative evaluation of response as threshold varies over all possible values. A 12-hr cortisol total area under the curve (AUC) for sows fed once daily at 1130 h was reduced relative to sow group fed at 1530 h (P = 0.046) but similar compared with the control sows (P = 0. 323). The control sows (0730 h) had reduced total (P < 0.001) and feeding (P = 0.001) activity AUCs relative to sows on 1130 but did not differ compared with sows on 1530 h feeding schedules (P > 0.100). Sows on 1130 h feeding schedule had greater feed anticipatory activity (FAA), 24-hr total activity count, total (P < 0.001) and feeding (P < 0.001) activity AUC compared with sows fed daily at 1530 h. In conclusion, feeding pregnant sows earlier in the morning (0730 h) appears to minimize sows’ behavior but similar cortisol response. Sows on 1130 h feeding schedule had greater activities but reduced cortisol concentration, suggesting that elevated sow activity might not necessarily indicate activation of hypothalamic-pituitary-adrenal axis.

scholarly journals Sex differences in circadian food anticipatory activity are not altered by individual manipulations of sex hormones or sex chromosome copy number in mice

PLoS ONE ◽  
2018 ◽  
Vol 13 (1) ◽  
pp. e0191373 ◽  
Author(s):  
Antonio Aguayo ◽  
Camille S. Martin ◽  
Timothy F. Huddy ◽  
Maya Ogawa-Okada ◽  
Jamie L. Adkins ◽  
...  
Keyword(s):  
Sex Differences ◽  
Sex Hormones ◽  
Copy Number ◽  
Sex Chromosome ◽  
Chromosome Copy Number ◽  
Food Anticipatory Activity ◽  
Anticipatory Activity

scholarly journals Single Gene Deletions of Orexin, Leptin, Neuropeptide Y, and Ghrelin Do Not Appreciably Alter Food Anticipatory Activity in Mice

PLoS ONE ◽  
2011 ◽  
Vol 6 (3) ◽  
pp. e18377 ◽  
Author(s):  
Keith M. Gunapala ◽  
Christian M. Gallardo ◽  
Cynthia T. Hsu ◽  
Andrew D. Steele
Keyword(s):  
Neuropeptide Y ◽  
Single Gene ◽  
Gene Deletions ◽  
Food Anticipatory Activity ◽  
Anticipatory Activity

scholarly journals The Dorsomedial Hypothalamic Nucleus Is Not Necessary for the Expression of Circadian Food-Anticipatory Activity in Rats

2007 ◽  
Vol 22 (6) ◽  
pp. 467-478 ◽  
Author(s):  
Glenn J. Landry ◽  
Glenn R. Yamakawa ◽  
Ian C. Webb ◽  
Rhiannon J. Mear ◽  
Ralph E. Mistlberger
Keyword(s):  
Hypothalamic Nucleus ◽  
Food Anticipatory Activity ◽  
Dorsomedial Hypothalamic Nucleus ◽  
Anticipatory Activity

scholarly journals Overexpression of striatal D2 receptors reduces motivation thereby decreasing food anticipatory activity

2018 ◽  
Vol 51 (1) ◽  
pp. 71-81 ◽  
Author(s):  
Joseph LeSauter ◽  
Peter D. Balsam ◽  
Eleanor H. Simpson ◽  
Rae Silver
Keyword(s):  
D2 Receptors ◽  
Food Anticipatory Activity ◽  
Anticipatory Activity

scholarly journals Locomotor and feeding activity rhythms in a light-entrained diurnal rodent, Octodon degus

1999 ◽  
Vol 277 (2) ◽  
pp. R523-R531 ◽  
Author(s):  
R. García-Allegue ◽  
P. Lax ◽  
A. M. Madariaga ◽  
J. A. Madrid
Keyword(s):  
Wheel Running ◽  
Feeding Strategy ◽  
Feeding Activity ◽  
Masking Effect ◽  
Constant Darkness ◽  
Octodon Degus ◽  
Lighting Conditions ◽  
Anticipatory Activity ◽  
Skeleton Photoperiod ◽  
Two Peaks

The wheel running (WR) and feeding activity (FA) of Octodon degus, a new laboratory rodent characterized by its diurnal habits, were recorded under different lighting conditions. Under 12:12-h light-dark (LD 12:12) cycles, WR activity exhibited a crepuscular pattern with two peaks, M and E, associated with “dawn” and “dusk,” respectively. In both cases, an anticipatory activity was patent, suggesting that, beside the masking effect of LD transitions, both peaks have an endogenous origin. This pattern, which was also observed under a skeleton photoperiod (LD 0.5:11.5), became unimodal after LD 0.5:23.5 and constant darkness (DD) exposure. Simultaneously, FA showed an arrhythmic pattern in most animals, especially under DD, when none of the animals exhibited a significant circadian rhythm. The existence of two groups of oscillators, or two oscillators, would explain most properties of the WR rhythms noted in this species. Our results show that the degu’s temporal feeding strategy seems mainly arrhythmic, whereas its WR pattern is driven by a strongly circadian bimodal rhythm.

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