Nutritional influences on carcass composition in the broiler chicken

Jones, Richard L.

doi:10.1079/pns19860031

Cited by 19 publications

(14 citation statements)

References 23 publications

(11 reference statements)

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“…Females were always fatter than males (in agreement with Fisher, 1984;Nir et al, 1988) and this was associated with a greater adipocyte hypertrophy (Jones, 1986 (Hood and Pym, 1982;Hood, 1984).…”

Section: Methodsmentioning

confidence: 60%

Effect of dietary protein level on lipid deposition in broilers during the finishing period

Grisoni¹,

Larbier²,

Uzu³

et al. 1990

Ann. Zootech.

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Summary — Male and female broilers were fed from 3 wk of age with one of 2 experimental diets containing 20 or 23% of crude protein and 3 170 kcal metabolisable energy (ME)/kg. Twenty-five birds per treatment were slaughtered at 5 or 7 wk of age to study the influence of dietary protein concentration on lipid deposition both in abdominal cavity and in the rest of the carcass. Though the higher protein diet did not modify the weight gain, it improved the feed conversion and reduced the fattening of birds. This effect was obtained 2 wk after experimental food distribution. The reduction in fattening was more pronounced in females than in males using abdominal fat ratio as a criterion. On the other hand, the lipid proportion in the rest of the carcass was more reduced in males than in females when birds were fed 23% protein (11.3 versus

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Section: Methodsmentioning

confidence: 60%

Effect of dietary protein level on lipid deposition in broilers during the finishing period

Grisoni¹,

Larbier²,

Uzu³

et al. 1990

Ann. Zootech.

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“…Highfat diets also decrease the activity of desaturases (Garg et al, 1986). The activity of Δ5 desaturase appears to be low in diabetic humans (Jones et al, 1986;Bassi et al, 1996). Low insulin levels, deficiency of protein and minerals such as iron, zinc, copper and magnesium, which are often associated with malnutrition, decrease Δ6 desaturase activity and therefore the conversions of LA and ALA to LCPUFA.…”

Section: Chapter 3: Fat and Fatty Acid Terminology Methods Of Analysmentioning

confidence: 99%

“…In the mid 1960s it took about 68 days for a broiler chicken to reach a slaughter weight of 2 kg, but by 1987 it took about 45 days (Jones, 1986). Carcass composition of broilers is determined by genetics and dietary manipulations (Jones, 1986). High-energy diets fed to broilers to reach slaughter weight earlier increase the fat content of the edible portion significantly (Jones, 1986).…”

Section: Poultrymentioning

confidence: 99%

“…The time it now takes before slaughter weight is reached, is about half the time it took fifty years ago (Hall and Sandilands, not dated). In the mid 1960s it took about 68 days for a broiler chicken to reach a slaughter weight of 2 kg, but by 1987 it took about 45 days (Jones, 1986). Carcass composition of broilers is determined by genetics and dietary manipulations (Jones, 1986).…”

Section: Poultrymentioning

confidence: 99%

“…Carcass composition of broilers is determined by genetics and dietary manipulations (Jones, 1986). High-energy diets fed to broilers to reach slaughter weight earlier increase the fat content of the edible portion significantly (Jones, 1986).…”

Section: Poultrymentioning

confidence: 99%

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Central composite design in the chiral analysis of amphetamines by capillary electrophoresis

et al. 1997

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We have studied a central composite design for the chiral separation of amphetamines using capillary electrophoresis. Five variables, i.e., buffer concentration, pH, chiral selector concentration, temperature, and applied voltage, were investigated. Enantiomeric resolutions as well as analysis time and generated power were established as responses for each experiment. A model of each response was obtained by multiple regression of a quadratic-degree mathematical expression. From the models, we determined the most favorable conditions for the chiral separation by optimizing the resolution and setting the other responses at threshold values. Results were compared with a previous study in which a systematic investigation of the operating parameters was carried out. In order to visualize the robustness of the method, response surfaces were drawn for the significant variables. We have concluded that experimental designs offer a rapid means of optimizing several variables and provide an efficient test for the robustness of the analytical method.

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Nutritional influences on carcass composition in the broiler chicken

Cited by 19 publications

References 23 publications

Effect of dietary protein level on lipid deposition in broilers during the finishing period

Effect of dietary protein level on lipid deposition in broilers during the finishing period

Fish Oil Supplement Research Remains Murky

Central composite design in the chiral analysis of amphetamines by capillary electrophoresis

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