Metabolic rate: its circadian rhythmicity in the female domestic fowl.

Berman, A.; Meltzer, A.

doi:10.1113/jphysiol.1978.sp012472

Cited by 27 publications

(10 citation statements)

References 16 publications

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“…Most of the heat increment of feeding was therefore produced during the day, either while the birds were in the act of eating or had recently ingested food. The general pattern of circadian variation was otherwise similar to that described in the domestic fowl by Berman and Meltzer, 1978;Lundy et al, 1978 and MacLeod et al, 19806. There was no indication of any anticipation of the two daily changes of lighting.…”

Section: Circadian Variationsupporting

confidence: 65%

Heat production by the mature male turkey (Meleagris gallopavo): Preliminary measurements in an automated, indirect, open‐circuit multi‐calorimeter system

Macleod

Lundy

Jewitt

1985

British Poultry Science

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The energy metabolism of mature male turkeys (Meleagris gallopavo) was determined in a computer-controlled indirect multi-calorimeter system of which the design and operation are described. Daily heat production did not change significantly during an initial 6-d period in the calorimeter chambers. Food intake was at first sufficient to promote a rate of energy retention significantly greater than zero, but decreased to give negative energy retention on day 6; mean energy retention for the whole 6-day period was significantly greater than zero. Heat production was affected little by fasting for 72 h, although the respiratory quotient decreased to 0.72 within 48 h; the heat increment of feeding was therefore small (about 5% of metabolisable energy). Fasting heat production, scaled on metabolic body size (bodyweight in kg)0.75, was similar to that of mature male domestic fowl (Gallus domesticus). Heat production after refeeding was similar to that recorded during the 6 d before fasting. There was a pronounced circadian rhythmicity of heat production in both fed and fasted birds.

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Section: Circadian Variationsupporting

confidence: 65%

Heat production by the mature male turkey (Meleagris gallopavo): Preliminary measurements in an automated, indirect, open‐circuit multi‐calorimeter system

Macleod

Lundy

Jewitt

1985

British Poultry Science

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“…probably contributed to such apparent inconsistencies. Additionally, there was no indication that measurements were carried out at the same time of day for all birds; if this was not the case, then major errors could have occurred due to the pronounced circadian rhythms of poultry (Berman and Meltzer, 1978;Mac-Leod et al, 1980).…”

Section: Discussionmentioning

confidence: 97%

The Effect of Food Restriction During Rearing on Fasting Heat Production of Layer Strain Pullets and Hens

Johnson

Farrell

1984

Poultry Science

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Fasting heat production was measured in darkened respiration chambers at three chronological and three physiological ages during rearing and laying in a layer strain to determine the effects of food restriction during rearing. There were three rearing treatments (42 to 162 days of age) in which birds were allowed ad libitum food intake (F) or were restricted by time (TR), in which birds were allowed continuous ad libitum food intake for about 24 hr in every 72 hr, or by proportion (PR), in which birds were offered each day 60 to 70% of the quantity consumed by F birds the previous day. Liveweight at 163 days of age was reduced by 19 and 15% for TR and PR birds, respectively, compared to F birds. Ad libitum food consumption was allowed during the laying period. Chronological age measurements were carried out at 140 days of age (prelay), 332 days of age, and 370 days of age. Physiological age measurements were carried out at sexual maturity (first egg), peak production (28 days after first egg) and postpeak production (98 days after first egg). Fasting heat production, measured under conditions that minimized physical activity, was not altered after correction for liveweight changes by the food restriction treatments. Based on this and other published studies, it was postulated that physical activity may play an important role in determining the effects of food restriction in poultry.

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“…Pineal gland and plasma melatonin concentrations in the embryo and hatchling follow a similar pattern with concentrations increasing during the ®rst week of post-hatch life . However, the rhythms in metabolism and HR do not develop until after hatching (Berman et al, 1978;Moriya et al, 2000;Tazawa et al, 2002). The developmental timing of the regulatory biological clocks follows closely the changes observed in the chick during the ®rst week of post-hatch life.…”

Section: Development Of Circadian Rhythmsmentioning

confidence: 99%

“…The circadian pattern of HR change mirrors that of metabolic rate in adult birds (Berman and Meltzer, 1978). Metabolic rate has been shown to vary daily with a period of around 24-hours.…”

Section: Daily Changes In Mhr and Hr Circadian Rhythmmentioning

confidence: 99%

“…Daily rhythmicities are well known in the chicken, and includes rhythms in daily egg laying, calling at dawn, and daily changes in physiological functions such as metabolic rate (Berman et al, 1978) and brain temperature (Aschoff et al, 1976). These daily¯uctua-tions are thought to be controlled by the daily cycle in hormones, such as melatonin Zeman et al, 2001) and the suprachiasmatic nucleus, pineal gland, and eye in the chicken (Yoshimura et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development of Heart Rate Circadian Rhythm in Chickens

Moriya¹,

Akiyama²,

Dzialowski³

et al. 2004

Avian & Poul. Biolog. Rev.

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In chick embryos, various instantaneous heart rate (IHR) fluctuations (e.g. HR variability, HR irregularities) have been found and developmental patterns of mean heart rate (MHR) have been elucidated. IHR changes have also measured in newly hatched and young chickens in order to investigate the developmental patterns of MHR and any potential diurnal HR rhythmicity such as a circadian rhythm. The present report reviews measurements of embryonic and hatchling HR fluctuations and examine development of HR circadian rhythms during the late stages of incubation and after hatching. Embryonic HR was continuously measured during the last half period of incubation. After hatching, continuous measurements of HR were made for two weeks at the longest in eight chickens ranging in age from 0 to 47 days. During the embryonic development, circadian rhythm of HR was found to be absent until hatching. After hatching, distinct circadian rhythm of HR appeared with increasing daily MHR from day 0 to day 7. During the second week of post-hatch life, the daily scope of MHR (diurnal maximum-nocturnal minimum) reached a maximum level ranging from 200 to 300 bpm with constant baseline of nocturnal MHR. In young chicks, the nocturnal HR baseline was the same as that during the fortnight of posthatch life and daily scope of MHR decreased to 100^150 bpm.

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Metabolic rate: its circadian rhythmicity in the female domestic fowl.

Cited by 27 publications

References 16 publications

Heat production by the mature male turkey (Meleagris gallopavo): Preliminary measurements in an automated, indirect, open‐circuit multi‐calorimeter system

Heat production by the mature male turkey (Meleagris gallopavo): Preliminary measurements in an automated, indirect, open‐circuit multi‐calorimeter system

The Effect of Food Restriction During Rearing on Fasting Heat Production of Layer Strain Pullets and Hens

Development of Heart Rate Circadian Rhythm in Chickens

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