Folate Deficiency in Chicks Fed Diets Containing Practical Ingredients

Pesti, G. M.; Rowland, G. N.; Ryu, Kyeong Seon

doi:10.3382/ps.0700600

Cited by 17 publications

(12 citation statements)

References 16 publications

(18 reference statements)

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“…The results of Experiments 1 and 2 extend those of earlier experiments (Marvel et al, 1944;Quillin et al, 1961;Pesti et al, 1991) that the growth of chicks fed diets based primarily on practical ingredients may be limited by some aspect of labile methyl group metabolism. The growth and tissue folic acid status of chicks are dependent not only on dietary folic acid, but also on dietary methionine and choline (Ryu et al, 1995, unpublished data).…”

Section: Discussionsupporting

confidence: 69%

The Folic Acid Requirements of Starting Broiler Chicks Fed Diets Based on Practical Ingredients.

Ryu¹,

Pesti²,

Roberson³

et al. 1995

Poultry Science

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Two experiments were conducted to determine the effects of dietary supplemental folic acid and methionine on the performance of starting broiler chicks for 18 d. Four levels of dietary folic acid (.24, .54, 1.14, and 2.34 mg/kg) and four levels of dietary methionine (.45, .53, .61, and .69%) were fed in a factorial design. There were three replicates of eight chicks each per each treatment. The basal diet was based on corn, isolated soybean protein, meat and bone meal, and fish meal. It contained adequate amounts of all nutrients except methionine and folic acid. Increased growth was observed in chicks fed the basal diet supplemented with either folic acid or methionine. Total dietary folic acid and methionine plus cysteine requirements for maximum growth were estimated to be 1.80 mg/kg and .85% in Experiment 1 and 1.47 mg/kg and .87% in Experiment 2, respectively. There were interactions between dietary folic acid and methionine on weight gain in both experiments. Chicks fed the diet containing 2.34 mg folic acid/kg tended to have depressed growth, as in previous experiments. There was a significant linear feed conversion response to folic acid in Experiment 1 and to methionine in Experiment 2. There were both linear and quadratic liver folic acid responses to dietary folic acid in both experiments. There was no indication that dietary methionine had any effect on liver folic acid content. No differences in bone ash, hemoglobin, hematocrit, or incidence of tibial dyschondroplasia were detected due to methionine or folic acid supplementation.

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Section: Discussionsupporting

confidence: 69%

The Folic Acid Requirements of Starting Broiler Chicks Fed Diets Based on Practical Ingredients.

Ryu¹,

Pesti²,

Roberson³

et al. 1995

Poultry Science

Self Cite

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“…Tilman & Pesti (1986) não conseguiram reproduzir, em condições experimentais semelhantes, os resultados obtidos por Miles et al (1983). Em outro experimento, Pesti et al (1991) controlaram, além da vitamina B12, o ácido fólico, suplementando a ração basal com 2 ppm de ácido fólico e, desta forma, encontraram respostas.…”

Section: Resultsunclassified

Efeito da suplementação de betaína em dietas de frangos de corte em condições de termoneutralidade

Sakomura

Barbosa

Silva

et al. 2013

Agraria

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RESUMOO objetivo deste trabalho foi avaliar o efeito da inclusão de betaína em dietas sobre o desempenho e morfometria intestinal de frangos de corte, durante os períodos de 1 a 7 e 8 a 21 dias de idade. Foram utilizados 1.408 pintos de corte machos Cobb, distribuídos aleatoriamente em 4 tratamentos com 16 repetições de 22 aves, em quatro câmaras climáticas. Os tratamentos foram: i) controle positivo -dieta formulada de acordo com as exigências nutricionais da ave; ii) controle negativo -com redução nos níveis de metionina e colina; iii) controle negativo + suplementação de 0,092% de betaína em substituição parcial de metionina e total da colina iv) controle negativo + suplementação de 0,1% de betaína natural em substituição parcial de metionina e total da colina. O consumo de ração, o ganho de peso e a conversão alimentar foram avaliados aos sete e 21 dias de idade. Aos 25 dias avaliaram-se as variáveis altura e profundidade de cripta jejunal, em que os resultados obtidos foram submetidos à análise de variância e teste de comparação de médias; já os resultados obtidos com a suplementação da betaína nas rações demonstraram efeitos positivos apenas no consumo de ração na fase de 1 a 7 dias e altura dos vilos da mucosa do jejuno na fase de 8 a 21 dias. A suplementação de 0,1% betafin (96% de betaína natural) na ração proporcionou melhorias nas características morfológicas do intestino delgado de frangos de corte. Palavras-chave: aditivos, integridade intestinal, metionina Effect of betaine supplementation in diets for broiler chickens on thermoneutral environment ABSTRACTThe aim of this study was to evaluate the effect of inclusion of betaine in broiler diets on performance and intestinal morphology of broilers during periods 1 to 7 and 8 to 21 days old. Were used 1,408 Cobb male broiler, randomly assigned into 4 treatments with 16 replicates of 22 birds in environmental chambers. The treatments were: i) positive control -diet formulated according to the nutritional requirements of the birds; ii) negative control -with reduction levels of methionine and choline; iii) negative control + 0.092% supplementation of betaine in substitution of methionine and total choline; iv) negative control + 0.1% supplementation of natural betaine to replace partial methionine and total choline. Were evaluated feed intake, weight gain and feed conversion at 7 and 21 days old. At 25 days were evaluated crypt height and depth of jejunum. The results were analyzed by ANOVA and mean comparison test. The results obtained with the supplementation of betaine in the feed only demonstrated a positive effect on feed consumption during 1 to 7 days, and villous height of the jejunum in the period of 8 to 21 days. Supplementation of 0.1% betafin (96% natural betaine) in the diet provided significant improvements in the morphological characteristics of the small intestine of broilers.

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“…Folic acid is necessary for maintaining a normal growth rate and acceptable FCR in broiler chickens, as well as a greater egg weight and higher hatchability in egg-type birds [ 124 , 125 ]. The egg weight and egg mass in laying hens aged 24 wk can be improved by adding 4 mg folic acid/kg of diet for 8 wk [ 126 ].…”

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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Folate Deficiency in Chicks Fed Diets Containing Practical Ingredients

Cited by 17 publications

References 16 publications

The Folic Acid Requirements of Starting Broiler Chicks Fed Diets Based on Practical Ingredients.

The Folic Acid Requirements of Starting Broiler Chicks Fed Diets Based on Practical Ingredients.

Efeito da suplementação de betaína em dietas de frangos de corte em condições de termoneutralidade

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

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