Riboflavin Requirement of Starting Chickens in a Tropical Environment

Ogunmodede, B. K.

doi:10.3382/ps.0560231

Cited by 11 publications

(5 citation statements)

References 6 publications

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“…Riboflavin has been reported to be essential in the utilisation of dietary energy and protein (Chou et al, 1971). While birds in the tropics generally consume less feed than those in the temperate regions (Scott et al, 19691, the loss of up to 17% dietary riboflavin within 24 hours of feed exposure (Ogunmodede, 1977) makes it imperative to increase dietary nutrient density to offset deficiency caused by these and other peculiar conditions. The inclusion of higher levels of riboflavin above the recommended level in this study appears to have left enough riboflavin even after losses on exposure.…”

Section: Resultsmentioning

confidence: 99%

“…Card and Nesheim (1976) reported that riboflavin is most likely to be deficient in poultry feeds. Consequently higher amounts of riboflavin are required by starting chickens (Ogunmodede, 1977) and growing Pullets (Arijeniwa and Ogunmodede, 1995) compared with those in the temperate zone as climatic factors stimulate partial inactivation of the vitamin added to the ration. The objective of this study was to determine the level of riboflavin needed in the diet of hens to ensure optimum breeding performance in a humid tropical environment.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Riboflavin Requirement of Breeding Hens in a Humid Tropical Environment

Arijeniwa

Ikhimioya

Bamidele

et al. 1996

Journal of Applied Animal Research

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Riboflavin Requirement of Breeding Hens in a Humid Tropical Environment

Arijeniwa

Ikhimioya

Bamidele

et al. 1996

Journal of Applied Animal Research

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“…Most of this evidence was obtained from studies on temperate breeds of poultry raised in temperate environments. The same poultry breeds grown in tropical environments do not grow as fast as they do in temperate climates and have different nutrient requirements in the tropics (Babatunde and Fetuga, 1975;Olomu, 1976;Ogunmodede, 1977).…”

Section: Introductionmentioning

confidence: 98%

Effect of High Dietary Calcium and Wide Calcium-Phosphorus Ratios in Broiler Diets

Smith

Kabaija

1985

Poultry Science

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The effect of varying dietary calcium (Ca) and phosphorus (P) levels and ratios on broiler performance and the incidence of leg abnormalities was studied using 180 Cobb broilers. A 3X2 factorial arrangement of treatments involving three Ca (1.0, 2.0, 3.0%) and two P (.6, 1.2%) levels was used. Manganese (Mn) was kept at 70 mg/kg for all diets. Only P main effects were significant for performance parameters, and Ca X P interractions effects were significant for leg abnormality scores and Mn status. High dietary P (1.2%) depressed (P<.01) gains (18.6 vs. 13.3 g/day), increased (P<.01) feed conversion ratio (2.4 vs. 2.8 kg/kg), and caused higher (P<.01) mortality (8.9 vs. 18.8%). At normal P (.6%), high dietary Ca (2.0% and 3%) disrupted Mn metabolism, causing a high incidence and severity of leg problems and associated bone disorders. Increasing dietary P to 1.2% attenuated these disruptive effects of high dietary Ca. This strategy, however, is not a satisfactory management alternative, because high dietary P adversely affected broiler performance and survival. The possibility of managing the condition by increasing dietary Mn was investigated in a second study in which 150 Cobb broilers grouped into five lots of 30 each were fed five diets containing graded levels of Mn (77.5, 140, 200, 255, and 300 mg/kg) for 6 weeks. All diets contained similar Ca (3%) and P (.6%) and adequate levels of other essential nutrients. Control birds (77.5 mg/kg) had the highest (P<.05) leg abnormality score (1.75), which decreased (P<.05) as dietary Mn increased up to and including 200 mg/kg, above which no additional reduction (P>.05) was observed. A similar trend was observed for tibia ash and volume, as well as the Mn status of the birds, but dietary Mn had no effect (P>.05) on performance parameters. Thus, the tendency to induce leg abnormalities of broiler diets containing Ca as high as 3% and, or Ca:P ratios as wide as 5:1, could be alleviated by increasing dietary Mn to 200 mg/kg. (

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“…KISR1226, Kuwait. protein, and Nesheim et al (1972) concluded that excessive levels of some amino acids in the diet may increase the degradation rate of other amino acids, thus increasing the chick's need for them. Ogunmodede (1977) reported that the growth rate of broiler chicks tends to be lower in the tropics than in the temperate zone, which could be attributed to inadequate levels of essential amino acids or vitamins.…”

Section: Introductionmentioning

confidence: 96%

The Effect of Adding Essential Amino Acids and Vitamins to the Rations of Broilers

et al. 1986

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Four experiments were carried out to investigate the amino acid and vitamin requirements of broilers. The performance of birds fed on control diets formulated according to the recommendations of the National Research Council (1977) was compared to that of birds fed on experimental diets containing additional amounts of essential amino acids (L-lysine and DL-methionine) and vitamins. The control diets varied in protein and metabolizable energy content; the experimental diets were obtained by adding varying additional amounts (10 to 50%) of one or both amino acids and vitamins to the control diets. The experimental diets resulted in consistently better body weight gains than the control diets. The results showed that under the conditions of these experiments, the levels of amino acids and vitamins in the control diets were not optimal for the proper growth and development of broilers and must be increased.

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Riboflavin Requirement of Starting Chickens in a Tropical Environment

Cited by 11 publications

References 6 publications

Riboflavin Requirement of Breeding Hens in a Humid Tropical Environment

Riboflavin Requirement of Breeding Hens in a Humid Tropical Environment

Effect of High Dietary Calcium and Wide Calcium-Phosphorus Ratios in Broiler Diets

The Effect of Adding Essential Amino Acids and Vitamins to the Rations of Broilers

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