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https://www.readbyqxmd.com/read/28099496/plasticity-of-daily-behavioral-rhythms-in-foragers-and-nurses-of-the-ant-camponotus-rufipes-influence-of-social-context-and-feeding-times
#1
Stephanie Mildner, Flavio Roces
Daily activities within an ant colony need precise temporal organization, and an endogenous clock appears to be essential for such timing processes. A clock drives locomotor rhythms in isolated workers in a number of ant species, but its involvement in activities displayed in the social context is unknown. We compared locomotor rhythms in isolated individuals and behavioral rhythms in the social context of workers of the ant Camponotus rufipes. Both forager and nurse workers exhibited circadian rhythms in locomotor activity under constant conditions, indicating the involvement of an endogenous clock...
2017: PloS One
https://www.readbyqxmd.com/read/28091348/effects-of-intermittent-fasting-on-glucose-and-lipid-metabolism
#2
Rona Antoni, Kelly L Johnston, Adam L Collins, M Denise Robertson
Two intermittent fasting variants, intermittent energy restriction (IER) and time-restricted feeding (TRF), have received considerable interest as strategies for weight-management and/or improving metabolic health. With these strategies, the pattern of energy restriction and/or timing of food intake are altered so that individuals undergo frequently repeated periods of fasting. This review provides a commentary on the rodent and human literature, specifically focusing on the effects of IER and TRF on glucose and lipid metabolism...
January 16, 2017: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/28079776/enhanced-recovery-program-and-length-of-stay-after-laparotomy-on-a-gynecologic-oncology-service-a-randomized-controlled-trial
#3
Elizabeth L Dickson, Erica Stockwell, Melissa A Geller, Rachel Isaksson Vogel, Sally A Mullany, Rahel Ghebre, Boris J N Witherhoff, Levi S Downs, Linda F Carson, Deanna Teoh, Michelle Glasgow, Matt Gerber, Colleen Rivard, Britt K Erickson, Jacob Hutchins, Peter A Argenta
OBJECTIVE: To estimate whether a rapid recovery program would reduce length of stay among patients undergoing laparotomy on a gynecologic oncology service. METHODS: We conducted a prospective, randomized, controlled trial comparing an enhanced recovery after surgery protocol with routine postoperative care among women undergoing laparotomy on the gynecologic oncology service. Protocol elements included: preoperative counseling, regional anesthesia, intraoperative fluid restriction, and early postoperative ambulation and feeding...
January 9, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28067137/residue-depletion-of-ivermectin-in-broiler-poultry
#4
Nora Mestorino, Daniel Buldain, Andrea Buchamer, Lihuel Gortari, Martín Daniele, María Laura Marchetti
Helminth infections are widespread in the poultry industry. There is evidence of extra-label use of some drugs, such as ivermectin (IVM) in broiler poultry. Pharmacokinetic and residual studies of IVM in poultry, however, are rather scarce. Our aim was to determine time restrictions for broiler chickens fed with balanced feed mixed with IVM for 21 days, could be in acceptable residual levels for consumption as established by the EU. Sixty 1-day old chicks were fed with food supplemented with IVM at 5 mg/kg feed for 21 days...
January 9, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28046182/regulation-in-free-amino-acid-profile-and-protein-synthesis-pathway-of-growing-pig-skeletal-muscles-by-low-protein-diets-for-different-time-periods
#5
Y H Li, H K Wei, F N Li, S W Kim, C Y Wen, Y H Duan, Q P Guo, W L Wang, H N Liu, Y L Yin
The objective of the study was to explore the extent to which the dietary CP level can be reduced for maintaining muscle protein deposition in growing pigs as well as the related mechanism and whether the response to dietary protein restriction is diversely modified throughout the 2 trial periods. A total of 36 pigs (9.57 ± 0.64 kg initial BW) were individually penned and fed 1 of 3 diets for 10 or 25 d. During each period, the diets contained 20, 17, and 14% CP, respectively. Both the 17% CP diet and the 14% CP diet were supplemented with Lys, Met, Thr, and Trp to provide the same total concentrations as those in the 20% CP diet...
December 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/28043374/the-relationships-between-body-fatness-leptin-testosterone-and-reproductive-performance-in-ram-lambs-as-affected-by-level-and-frequency-of-feeding
#6
Ayman Abdel-Aziz Swelum, Moez Ayadi, Ibrahim Alhidary, Abdullah Alowaimer, Mohamed Abouheif
This study was carried out using 24 Najdi ram lambs of approximately 6.5 months old to evaluate the effects of feed restriction and frequency of feeding on hormone concentrations of leptin and testosterone, sexual behavior, and semen traits. Ram lambs were allotted equally into three feeding groups. The first group was used as a control and fed ad libitum. The second and third groups were restricted fed at 0.85 ad libitum and fed either once (R1M) or twice daily (R2M). Sexual behavior and semen evaluation were assessed during the sixth, seventh, and eighth weeks of the study...
February 2017: Theriogenology
https://www.readbyqxmd.com/read/28017879/circadian-rhythms-time-restricted-feeding-and-healthy-aging
#7
REVIEW
Emily N C Manoogian, Satchidananda Panda
Circadian rhythms optimize physiology and health by temporally coordinating cellular function, tissue function, and behavior. These endogenous rhythms dampen with age and thus compromise temporal coordination. Feeding-fasting patterns are an external cue that profoundly influence the robustness of daily biological rhythms. Erratic eating patterns can disrupt the temporal coordination of metabolism and physiology leading to chronic diseases that are also characteristic of aging. However, sustaining a robust feeding-fasting cycle, even without altering nutrition quality or quantity, can prevent or reverse these chronic diseases in experimental models...
December 23, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/28012617/growth-performance-feeding-behavior-and-selected-blood-metabolites-of-holstein-dairy-calves-fed-restricted-amounts-of-milk-no-interactions-between-sources-of-finely-ground-grain-and-forage-provision
#8
M Mirzaei, M Khorvash, G R Ghorbani, M Kazemi-Bonchenari, M H Ghaffari
The objective of this study was to investigate the effects of grain sources and forage provision on growth performance, blood metabolites, and feeding behaviors of dairy calves. Sixty 3-d-old Holstein dairy calves (42.2 ± 2.5 kg of body weight) were used in a 2 × 3 factorial arrangement with the factors being grain sources (barley and corn) and forage provision (no forage, alfalfa hay, and corn silage). Individually housed calves were randomly assigned (n = 10 calves per treatment: 5 males and 5 females) to 6 treatments: (1) barley grain (BG) without forage supplement, (2) BG with alfalfa hay (AH) supplementation, (3) BG with corn silage (CS) supplementation, (4) corn grain (CG) without forage supplement, (5) CG with AH supplementation, and (6) CG with CS supplementation...
December 21, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/28006784/long-term-energy-deficit-in-mice-causes-long-lasting-hypothalamic-alterations-after-recovery
#9
Mathieu Méquinion, Ophélia Le Thuc, Sara Zgheib, David Alexandre, Nicolas Chartrel, Carole Rovère, Pierre Hardouin, Odile Viltart, Christophe Chauveau
Although short-term effects on fasting or energy deficit on hypothalamic neuropeptide circuitries are now better understood, the effects of long-term energy deficit and refeeding remain to be elucidated. We showed that after a long-term energy deficit mice exhibited persistent hypoleptinemia following the refeeding period despite restoration of fat mass, ovarian activity and feeding behavior. We aimed to examine the hypothalamic adaptations after 10 weeks of energy deficit and after 10 further weeks of nutritional recovery...
December 23, 2016: Neuroendocrinology
https://www.readbyqxmd.com/read/27998722/intermittent-access-to-a-nutritionally-complete-high-fat-diet-attenuates-alcohol-drinking-in-rats
#10
Sunil Sirohi, Arriel Van Cleef, Jon F Davis
Binge eating disorder and alcohol use disorder (AUD) frequently co-occur in the presence of other psychiatric conditions. Data suggest that binge eating engages similar behavioral and neurochemical processes common to AUD, which might contribute to the etiology or maintenance of alcoholism. However, it is unclear how binge feeding behavior and alcohol intake interact to promote initiation or maintenance of AUD. We investigated the impact of binge-like feeding on alcohol intake and anxiety-like behavior in male Long Evans rats...
December 18, 2016: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/27988115/effects-of-dietary-physically-effective-neutral-detergent-fiber-content-on-the-feeding-behavior-digestibility-and-growth-of-8-to-10-month-old-holstein-replacement-heifers
#11
H R Wang, Q Chen, L M Chen, R F Ge, M Z Wang, L H Yu, J Zhang
The objective of this study was to evaluate the effects of dietary physically effective neutral detergent fiber (peNDF) content on the feeding behavior, digestion, ruminal fermentation parameters, and growth of 8- to 10-mo-old dairy heifers and to predict the adequacy of dietary fiber in growing dairy heifers. Twenty-four Holstein dairy heifers (245 ± 10.8 d of age, 305.6 ± 8.5 kg initial live weight) were randomly divided into 4 treatments with 6 replicates as a completely randomized design. During the 60-d period with a 10-d adaptation, heifers were offered 1 of 4 diets, which were chemically identical but included different peNDF8...
December 14, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27936424/boar-taint-meat-quality-and-fail-rate-in-entire-male-pigs-and-male-pigs-immunized-against-gonadotrophin-releasing-factor-as-related-to-body-weight-and-feeding-regime
#12
K L Moore, B P Mullan, F R Dunshea
The objective of this experiment was to compare the pork quality of entire male pigs and pigs immunized against GnRF (IC males) at both light (64.8kg) and heavy (106kg) liveweights and two feeding regimes (restricted at 2.5 times maintenance and ad libitum). There was no difference in objective measurements (P>0.05) or eating pork quality (P>0.1) between entire male and IC males. Fail rates were reduced by 9.1% and 12% for pork from IC males for quality grade (P=0.007) and re-purchase intention (P=0.001), respectively, compared to pork from entire males...
March 2017: Meat Science
https://www.readbyqxmd.com/read/27925141/nutritional-interventions-that-slow-the-age-associated-decline-in-renal-function-in-a-canine-geriatric-model-for-elderly-humans
#13
J A Hall, M Yerramilli, E Obare, M Yerramilli, K S Panickar, G Bobe, D E Jewell
OBJECTIVE: To determine the effects of feeding traditional and renal protective foods (RPF) supplemented with functional food bioactives on glomerular filtration rate (GFR), lean body percent (LB%), and selected circulating biomarker and metabolite concentrations in a geriatric dog model. DESIGN: Randomized block design and cross-sectional study. SETTING: Hill's Pet Nutrition, Inc. dog colony. PARTICIPANTS: Eighty-one geriatric dogs (mean age, 10...
2016: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/27920197/supplementation-of-fine-and-coarse-limestone-in-different-ratios-in-a-split-feeding-system-effects-on-performance-egg-quality-and-bone-strength-in-old-laying-hens
#14
A Molnár, L Maertens, B Ampe, J Buyse, J Zoons, E Delezie
Different ratios of fine- (FL) and coarse limestone (CL) were compared (50FL:50CL, 30FL:70CL, 0FL:100CL) in conventional (C) and split feeding (S) for their effects on performance, egg quality traits, and bone quality of old, brown laying hens (72 to 83 wk). Each treatment consisted of 42 hens (7 hens × 6 replicates). In the C system diets supplemented with limestone were provided during the whole day, whereas in the S system a morning diet was fed without added limestone, and only the afternoon diet was supplemented with different limestone ratios...
December 5, 2016: Poultry Science
https://www.readbyqxmd.com/read/27917680/development-of-nitrogen-and-methane-losses-in-the-first-eight-weeks-of-lactation-in-holstein-cows-subjected-to-deficiency-of-utilisable-crude-protein-under-restrictive-feeding-conditions
#15
Franz Sutter, Angela Schwarm, Michael Kreuzer
Low-protein diets are increasingly being used in dairy cow nutrition to minimise noxious nitrogen (N) emissions. However, at parturition, the lower milk yield at that time may mask deficiency in dietary utilisable crude protein (uCP; equivalent to metabolisable protein). Under restrictive feeding conditions, farmers would limit the feed allowance to match the lower measured milk yield, thereby exacerbating the deficiency. The consequences for N emission intensity per kg milk yield and methane emissions are unknown...
February 2017: Archives of Animal Nutrition
https://www.readbyqxmd.com/read/27898951/intrauterine-growth-restricted-piglets-have-similar-gastric-emptying-rates-but-lower-rectal-temperatures-and-altered-blood-values-when-compared-with-normal-weight-piglets-at-birth
#16
C Amdi, M V Klarlund, J Hales, T Thymann, C F Hansen
Intrauterine growth-restricted (IUGR) piglets have lower survival rates and are more likely to have empty stomachs 24 h after birth than normal piglets. Although hypoglycemia may result from low colostrum intake per se, it is not known if slow gastric emptying may be an additional risk factor for poor immunization and glucose absorption in IUGR piglets. It is estimated that IUGR piglets consume less colostrum per kilogram BW than normal-weight piglets within the first 24 h, which could be due to a slower gastric emptying rate and a compromised energy metabolism...
November 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898938/effects-of-varying-floor-space-on-aggressive-behavior-and-cortisol-concentrations-in-group-housed-sows
#17
P H Hemsworth, R S Morrison, A J Tilbrook, K L Butler, M Rice, S J Moeller
Floor space is an important determinant of aggression and stress in group-housed sows, and the aim of the present experiment was to comprehensively examine the effects of floor space in the range of 1.45 to 2.90 m/sow from mixing until 27 d after insemination on aggression, stress, and reproduction of group-housed sows. A previous experiment on the effects of floor space indicated spatial variability across and along the research facility in both sow aggression and stress. To minimize this spatial variability within the research facility, similar-sized pens but with varying groups sizes (10-20) in 4 separate blocks of 3 contiguous pens within each of 9 time replicates (180 sows/replicate) were used to examine 6 space allowances (1...
November 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898886/effect-of-feed-restriction-and-initial-body-weight-on-growth-performance-body-composition-and-hormones-in-male-pigs-immunized-against-gonadotropin-releasing-factor
#18
K L Moore, B P Mullan, J C Kim, H G Payne, F R Dunshea
Pigs immunized against gonadotropin-releasing factor (GnRF) have increased carcass fatness compared to entire males; however, the timing of this increase in fatness after the second immunization against GnRF has not been determined. An experiment was conducted to identify and compare the growth performance, body composition, and physiological changes in immunocastrated males (IC males) at different BW and feeding levels. A total of 64 pigs were used in a 2 × 2 × 2 factorial experiment with the treatments being 1) sex (entire males or IC males), 2) initial BW (45...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27891506/synchronization-of-dairy-cows-does-not-limit-the-behavioral-response-to-treatment-in-mixed-treatment-experimental-designs
#19
Meagan T M King, Robin E Crossley, Trevor J DeVries
In many research studies, animals assigned to different treatments are housed adjacently or together in a group. One critique of these designs has been the potential role of behavioral facilitation and synchronization between animals on different treatments in mixed treatment groups (heterogeneous groups). To evaluate this, we compared the synchrony of feeding behavior between dairy cows housed in heterogeneous groups to cows exposed to the same treatment simultaneously (homogenous groups). Twenty-four cows were exposed to each of the two treatments over 21 days in a replicated cross-over design...
2016: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/27885007/circadian-physiology-of-metabolism
#20
REVIEW
Satchidananda Panda
A majority of mammalian genes exhibit daily fluctuations in expression levels, making circadian expression rhythms the largest known regulatory network in normal physiology. Cell-autonomous circadian clocks interact with daily light-dark and feeding-fasting cycles to generate approximately 24-hour oscillations in the function of thousands of genes. Circadian expression of secreted molecules and signaling components transmits timing information between cells and tissues. Such intra- and intercellular daily rhythms optimize physiology both by managing energy use and by temporally segregating incompatible processes...
November 25, 2016: Science
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