Studies on the Nutritional Value of Sorghum Grains with Varying Tannin Contents for Chicks

Rostagno, H. S.; Rogler, J. C.; Featherston, W. R.

doi:10.3382/ps.0520772

Cited by 48 publications

(26 citation statements)

References 8 publications

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“…Some authors [69,70] have suggested, respectively, some methodologies to stabilize the endogenous loss of amino acids by the animals, such as protein-free diet (PFD) and enzymatically hydrolyzed casein (EHC) techniques.…”

Section: Amino Acids Methodologies: Digestibilitymentioning

confidence: 99%

Amino Acid for Japanese Quails: Methodologies and Nutritional Requirement

Vieira¹,

Costa²,

Lima³

et al. 2017

Amino Acid - New Insights and Roles in Plant and Animal

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The methodologies applied to chickens and laying hens, to determine the digestibility and requirement of protein and amino acids are used with quails, however, they need a more careful evaluation due to peculiarities inherent to the Coturnix genus, in order to provide consistent results. The nutritional requirements of the birds are determinate using the dose-response and the factorial method. Several mathematical models and techniques of diet formulation are allied to the dose-response method in determining nutritional requirements. The curvilinear (hyperbolic) models beter portray population behaviour in response to increasing nutrient doses in diets. The reading model, allow a beter estimation of the requirement, in relation to the mathematical models used in the dose-response method. The techniques of comparative slaughter and nitrogen balance are efective in determining the nutritional requirements of quails, however, the later need to be corrected by the loss of nitrogen in the feathers in determining the requirements of crude protein and amino acids for maintenance. The protein-free diet, coupled with the industrial amino acid supplementation, provides more robust digestibility values, since it more efectively predicts the endogenous excretion patern.

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Section: Amino Acids Methodologies: Digestibilitymentioning

confidence: 99%

Amino Acid for Japanese Quails: Methodologies and Nutritional Requirement

Vieira¹,

Costa²,

Lima³

et al. 2017

Amino Acid - New Insights and Roles in Plant and Animal

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show abstract

“…In reviewing the subject of AA metabolism in the intestine, Bird (1968) (Rostagno et al 1973;Nelson et al 1975), fat and mycotoxins (Nelson et al 1982). The ability of the bird to absorb AA can be affected by disease, such as coccidiosis (Preston-Maftram and Sykes 1967), prior diet composition (Yokota 1976) and prior feed intake (Gous l9'77a,b ported by Darcy-Vrillon et al (1985) but they point out that the data are affected by the CHOTCrOFBALANCETRIAL.…”

Section: Sibbald -Bioavailable Amino Acid Estimation 251mentioning

confidence: 99%

“…1974;Pomeranz et al 1974),location of growth (Woodham et al 1972; Woodham 1973), soil fertility (Larsen and Nielsen 1966;Rhodes and Mathers 1974; Cromwell et al 1983), season (Dingle and McEwan 1912), and year of growth (Baker and Speer 1983) also contribute to variability. The situation is further complicated because AA digestibility, measured in vitro (Johnson et al 1978), wirh pigs (cousins et al 1981; Andersen and Bell 1983) and with birds (Rostagno et al 1973;McNab and Shannon 226 CANADIAN JOURNAL OF ANIMAL SCIENCE associated with the tissues that comprise the feedingstuff. For example, feather meal and poultry by-product meal differ (Burgos et al 1914) as do meat and bone meal, bone meal, blood meal and feather meal (Hegedus et al 1983).…”

mentioning

confidence: 99%

“…"In the meantime, there are many assays used to estimate BAA which have specific applications and limitations. R6rat (1971), Meade (19'72) and McNab (19'79a), and more recently, Baker and Speer (1983) and Engster (1986 (Friend et al 1982) and poultry (Sharlin et al 1981) (1983) Shannon 1974;Davies 1980), and within species among genotypes as shown for wheat (Ahuja and Austin 1973;March and Biely 1973;Salmon and Dunkelgod 1974), barley (Woodham et al 1972;Chatterjee et al 1973 ; Rhodes and Jenkins 1975), sorghums (Rostagno et al 1973;Cousins et al 1981), soybeans (Burgos et al 1913), and defatted raw soybean flakes (Bajjalieh et al 1980). Amino acid concentrations vary among plant fractions as shown for barley (Just et al 1980;Rhodes and Gill 1980) and wheat (Olsen et al 1968;Miladi and Hegsted 1972).…”

mentioning

confidence: 99%

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Estimation of Bioavailable Amino Acids in Feedingstuffs for Poultry and Pigs: A Review With Emphasis on Balance Experiments

Sibbald¹

1987

Can. J. Anim. Sci.

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A bioavailable nutrient has the potential to be utilized when ingested. Ideally, the nutrient requirements of animals and the nutrient concentrations of feedingstuffs should be expressed in terms of bioavailable units. Bioavailability is an abstract concept which cannot be measured but it can be estimated. The purpose of this review is to describe, evaluate and compare procedures used to estimate the concentrations of bioavailable amino acids (BAA) in feedingstuffs for pigs and poultry. Accurate and precise measurement of total amino acid (AA) concentrations is of fundamental importance to many assays. Problems are encountered both in making the AA available for measurement (hydrolysis) and in the measurement procedures. There is need for standardization of methodology but until this is achieved caution must be exercised when comparing data obtained by different techniques or even from different laboratories. In vitro assays for BAA are relatively fast and can be made without access to animals. Enzymic digestion has the potential to be a good estimator of BAA but is constrained by a lack of information about the bioavailabilities of the peptides which are liberated. Chemical assays and dye binding produce data which sometimes, but not always, correlate with biological estimates of BAA. The future of such assays seems to be in quality control where comparisons are made among samples within ingredients. Among the indirect biological assays, those based on microbial growth have received the most attention. The major weakness of such assays resides in the difference between animal and microbe in the ability to utilize peptides. Plasma free amino acids are not satisfactory estimators of BAA although they can help to identify limiting AA in feedingstuffs. Nitrogen digestion lacks the sensitivity to be a predictor of BAA. Growth assays are thought by many to be the ultimate measure of bioavailability but in fact they measure utility which is not the same. Nevertheless, growth assays can provide valuable estimates of BAA providing that their limitations are understood. The assays are expensive and slow and the results can be affected by many variables including changes in nutrient concentrations when a test material is added to an assay diet. Much of the review is devoted to balance experiments which require great care and attention to detail if reliable, reproducible data are to be obtained. Procedures have been refined during many years of use and with the advent of new equipment and techniques. Concern is currently focussed on corrections for metabolic and endogenous losses and on the effects of the microflora of the alimentary tract. Recent developments have increased assay efficiency, particularly with poultry. The balance experiment provides BAA estimates, that can be used effectively in diet formulation, at a much faster rate than growth assays. The final section of the review makes comparisons among various methods of estimating BAA. Interspecies comparisons are useful because they provide guidance when attempting to apply data derived with one species to formulate diets for another. The search for a single assay which provides data applicable to several species is a worthwhile objective. In the meantime, there are many assays used to estimate BAA which have specific applications and limitations. Key words: Pigs, poultry, amino acids, assay methodology, feedingstuffs, review

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“…Le bl6 et lc mais ont permis des gains de higher t-eed-to-gain ratio obtained fiom sorghum diets $,hen compared with corn or wheat diets is not known. Rostagno and co-workers suggested that the poor performance of chicks fed sorghum diets was due partly to the presence of tannic acid (Rostagno et al 1973a) and partly to the lower digestibility of their amino acids (Rostagno et al 1973b). Sibbald (1911) …”

mentioning

confidence: 99%

Sorghum, Wheat and Corn in Diets for Broiler Chicks

Gardiner¹,

Dubetz²,

Major³

1981

Can. J. Anim. Sci.

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Sorghum, wheat or corn in soybean meal-based diets with four levels of supplemental methionine were compared for broiler chick growth from 0 to 28 days of age. Wheat and corn supported more rapid weight gains and lower feed-to-gain ratios than did sorghum, regardless of added methionine. A response in rate of gain and feed-to-gain ratios was obtained with the added levels of methionine with each of the three grains.

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Studies on the Nutritional Value of Sorghum Grains with Varying Tannin Contents for Chicks

Cited by 48 publications

References 8 publications

Amino Acid for Japanese Quails: Methodologies and Nutritional Requirement

Amino Acid for Japanese Quails: Methodologies and Nutritional Requirement

Estimation of Bioavailable Amino Acids in Feedingstuffs for Poultry and Pigs: A Review With Emphasis on Balance Experiments

Sorghum, Wheat and Corn in Diets for Broiler Chicks

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