A Study of the Niacin Requirement of the Laying Hen

Adams, R. L.; Carrick, C. W.

doi:10.3382/ps.0460712

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Niacin or nicotinic acid is a precursor required for the biosynthesis of the coenzymes nicotinamide adenine dinucleotide and nicotinamide adenine dinucleotide phosphate, and thus it plays a fundamental role in metabolism [ 139 ]. Niacin deficiency is linked to reductions in the growth rate and feather growth, and an increased incidence of leg problems in meat-type birds [ 140 , 141 ], as well as poor eggshell quality, low egg production, and decreased hatchability in egg-type birds [ 142 ]. The addition of 60 mg niacin to a corn-soybean meal diet is recommended for improving body weight gains, the meat yield, and meat quality in broiler chickens [ 143 ].…”

Section: Introductionmentioning

confidence: 99%

Nutritional requirements of meat-type and egg-type ducks: what do we know?

Fouad

Ruan²,

Wang³

et al. 2018

J Animal Sci Biotechnol

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The demand for duck meat, duck eggs, and associated products is increasing each year. Classic and modern selection programs have been applied to enhance the economic traits of ducks to satisfy the requirements of consumers and enhance the incomes of producers. The nutritional requirements of unselected ducks may not be adequate, however, to fulfill the potential productivity performance of modern birds, including both meat-type and egg-type ducks. In particular, an imbalanced diet is associated with low productive performance and signs of nutritional deficiency (if insufficient nutrients are supplied), as well as with high feed costs and manure problems that reflect flock health and welfare (if excessive nutrients are supplied). Thus, the main aim of this review is to summarize the results of previous studies that estimated the nutrient requirements of meat-type and egg-type ducks in order to evaluate current knowledge and to identify further issues that need to be addressed. In addition, the results obtained in previous studies are compared in order to understand how to lower commercial feed costs, fulfill the genetic potential of selected ducks, protect the environment from pollution, and satisfy the welfare and health needs of ducks.

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Section: Introductionmentioning

confidence: 99%

Nutritional requirements of meat-type and egg-type ducks: what do we know?

Fouad

Ruan²,

Wang³

et al. 2018

J Animal Sci Biotechnol

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Effect of layer management on carotene value in eggs

Šebečić

Balint

Momirovic-Culjat

1984

Nahrung

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B. %BEPIC, L. BALINT and J. M O M I R O V I~-~U L J A TChromatographic-spectrophotometric method was used to determine the carotene content in the egg yolk of naturally raised chickens and in the eggs produced on poultry farms (Industrial production) for the winter and spring periods. The aim of the study was to find out if the industrial production of eggs causes changes in the carotene content of the egg yolk. Distinct differences were recorded in the carotene content in the egg yolk of eggs obtained from private producers and of those produced on poultry farms. for both periods. Considerable differences were recorded for the spring period: the carotene content in the yolk of eggs laid in natural environment, by chickens fed natural food, was 290% higher than that in the yolk of industrially produced eggs. The difference for the winter period was 152 %.

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Vitamin Requirements and Allowances for Poultry

Whitehead

1989

Recent Advances in Animal Nutrition

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A Study of the Niacin Requirement of the Laying Hen

Cited by 3 publications

References 7 publications

Nutritional requirements of meat-type and egg-type ducks: what do we know?

Nutritional requirements of meat-type and egg-type ducks: what do we know?

Effect of layer management on carotene value in eggs

Vitamin Requirements and Allowances for Poultry

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