Heat Production and Gaseous Metabolism of Young Male Chickens

Barott, H. G.; Fritz, J. C.; Pringle, Emma M.; Titus, Harry W.

doi:10.1093/jn/15.2.145

Cited by 54 publications

(21 citation statements)

References 14 publications

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“…No RQ value below 0.7 was found (mean value = 0.729 ; s = 0.021 ; minimum = 0.700, maximum = 0.831) and this was confirmed by 1-hr values from which the means were calculated. These results agreed with the assumption concerning respiratory katabolism in the fowl (Barott et al, 1938 ;King, 1957) and were in accordance with several authors working with other measurement methods (Dukes, 1937 ;Misson, 1974 ;Shannon et al, 1969 ;Tasaki and Sakurai, 1969 ;Waring and Brown, 1967 …”

Section: Introductionsupporting

confidence: 91%

“…We found a descending metabolic rate expressed by negative linear relationships between the magnitude of metabolic parameters and the duration of fasting (f. e. Hp I kJ/h } = 21.44-3.90 ! ( duration of fasting in hours I ± 1.58 ; r = -0.804 ; P <0.01 ; n = 6) (Wonnacott and Wonnocott, 1972 (Dixon, 1975 Barott et al (1938) and King (1957). These findings, indicating a probable protein metabolism during prolonged fasting, are in accordance with results of Okumura and Tasaki (1969) who found an increasing uric acid concentration in the blood of chickens with duration of fasting.…”

Section: Introductionmentioning

confidence: 97%

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A critical analysis of fasting metabolism data in R. I. R. hens (Gallus gallus)

Geers¹,

Michels²,

Decuypere³

1978

Ann. Biol. anim. Bioch. Biophys.

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Section: Introductionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 97%

A critical analysis of fasting metabolism data in R. I. R. hens (Gallus gallus)

Geers¹,

Michels²,

Decuypere³

1978

Ann. Biol. anim. Bioch. Biophys.

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“…The decline in heat production of starved chickens as they aged when expressed as kj/kg body weight would be expected on the basis of previous studies (Barott et al, 1938;Kibler and Brody, 1944). The significantly lower value for chickens that had been on the 30% mouldy wheat when expressed per kg 075 was unexpected, EFFECTS OF AFLATOXIGOSIS ON METABOLISM 91 as they generally had the highest food consumption (g/100 g); this might stimulate subsequent heat production as has sometimes been suggested by Shannon and Brown (1970), and Balnave (1974) and for other species (Marston, 1948).…”

Section: Discussionmentioning

confidence: 70%

Energy and nitrogen metabolism of diseased chickens: Aflatoxicosis

Rajion

Farrell

1976

British Poultry Science

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1. New Hampshire chicks were fed on diets containing 0 (control), 0-7 (A), or 1-1 (B) ppm of aflatoxin B1. In two trials 1-d-old chicks were offered ad libitum the three diets for 14 d. The gaseous exchange of five chickens from each group was measured for 3 or 4 d, the same diets being fed, at 2, 3, 4 and 5 weeks of age in two series of experiments. The controls were fed at the lower intake of the two other groups. Following each series of experiments at the various ages, birds were starved for 24 h and their heat production was re-measured over the next 24 h. 2. Mortality was highest and growth and food conversion poorest where the diet with the highest aflatoxin concentration was fed. Mortality was confined to the first 2 weeks. 3. Performance of birds in the chambers was improved in the second series due to differences in food intake. It also improved with age suggesting some resistance to the toxin. 4. Mean respiratory quotient was 0-97 for fed chickens on diet B. This was significantly different from 0-92 for the two other groups. Similarly, during starvation the RQ was 0-76 compared with 0-73. 5. birds fed on diet B generally grew better, retained more nitrogen and had a better energy balance in the respiration chambers than the other two groups. Metabolisability of dietary energy was less (68.5%) for all groups at 2 to 3 weeks than when older (70%) but availability of ME was the same (71%) for all groups. 6. Heat production (kJ/kg0-75) of starved birds on diet B was significantly lower than the other two groups, while endogenous nitrogen excretion was higher. 7. Water consumption (ml/g food and g/100 g body weight) was greatest for birds on diet B. 8. Although aflatoxin in the diet substantially reduced intake there was no indication that at these reduced levels of intake, nitrogen or energy metabolism were measurably impaired.

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“…The results obtained indicate that the exact chronology of the diurnal rhythms described in poultry by Barott et al (1938) and by Tasaki and Sakurai (1969) cannot be considered a general phenomenon, but must depend on the timing of the most potent cues, such as the lighting pattern. The diurnal variation observed in our experiments includes both activity and food intake and therefore was not the endogenous rhythm observed by Deighton and Hutchinson (1940) in starving chickens, where it was independent of locomotor activity.…”

Section: Discussionmentioning

confidence: 89%

An automated multi‐calorimeter system: Preliminary experiments on laying hens

Lundy

Macleod

Jewitt

1978

British Poultry Science

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1. An open-circuit, automated, multi-calorimeter system for studies on the energy metabolism of the fowl is described. 2. Discontinuous observations of 10-min duration once each hour for 22 h gave good agreement with continuous observations throughout 22 h. 3. It is essential to train each hen before a series of calorimeter experiments. 4. A distinctive pattern of light-entrained, diurnal variation of metabolic rate has been observed in starving and fed birds of two laying strains.

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Heat Production and Gaseous Metabolism of Young Male Chickens

Cited by 54 publications

References 14 publications

A critical analysis of fasting metabolism data in R. I. R. hens (Gallus gallus)

A critical analysis of fasting metabolism data in R. I. R. hens (Gallus gallus)

Energy and nitrogen metabolism of diseased chickens: Aflatoxicosis

An automated multi‐calorimeter system: Preliminary experiments on laying hens

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