Sequence of Limiting Amino Acids in Gelatin for the Growing Chick

Boomgaardt, John; Baker, David H.

doi:10.3382/ps.0511650

Cited by 20 publications

(9 citation statements)

References 13 publications

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“…Sesame meal is deficient in lysine and it has been shown that it can support good performance in chicks when supplemented with lysine (Griminger and Scott, 1959). Gelatin has been shown to be deficient in most of the essential amino acids (Boomgaardt and Baker, 1972) and it is particularly low in tryptophan, the sulfur amino acids and isoleucine. Results of a preliminary assay (Table 2) using the 23% protein diet with no added lysine or methionine showed that lysine and methionine were severely deficient in this diet and that chicks were able to gain well on the supplemented diet.…”

Section: Methodsmentioning

confidence: 97%

The Lysine Requirement of Growing Chicks Fed Sesame Meal-Gelatin Diets at Three Protein Levels

Boomgaardt

Baker

1973

Poultry Science

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Diets providing three levels of protein (14, 18.5 and 23%) and six levels of lysine (3.43, 3.93, 4.43,4.93, 5.43 and 5.93% of C.P.) were fed to triplicate groups of eight male crossbred chicks for the period 14 to 28 days posthatching. The basal 23% protein ration contained protein from sesame meal and gelatin and was supplemented with quantities of essential amino acids equal to the difference between the level supplied by the dietary protein and that recommended by N.R.C. (1971). Amino acid pattern of the 14 and 18.5% protein diets was similar to that of the 23% protein diet since proteinaceous ingredients and crystalline amino acids were reduced in direct proportion to the reduction in protein level. The lysine requirement for maximal weight gain was estimated to be 4.73,4.72 and 4.60% of the protein at 14, 18.5 and 23% dietary protein, respectively. Expressed as a percent of the diet the requirement values were estimated at 0.66, 0.88 and 1.05% at 14, 18.5 and 23% dietary protein, respectively. The results confirm earlier observations that the requirement for an essential amino acid remains essentially constant as dietary protein level is varied between deficiency and adequacy.

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Section: Methodsmentioning

confidence: 97%

The Lysine Requirement of Growing Chicks Fed Sesame Meal-Gelatin Diets at Three Protein Levels

Boomgaardt

Baker

1973

Poultry Science

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“…Harper (1959), Boomgaardt & Baker (1972) and Lewis el al. (1982) also reported lack of correlation between calculated and determined sequences of limiting amino acids in different test proteins.…”

Section: Resultsmentioning

confidence: 91%

“…The remaining indispensable amino acids were evidently present at about the same relative abundance. A great number of treatments are usually required in other proposed methods (Fisher, 1965;Ashley & Fisher, 1966;Boomgaardt & Baker. 1972;Lewis et al, 1965).…”

Section: Resultsmentioning

confidence: 99%

Sequence in Which the Amino Acids of Fish Meal Proteins Become Limiting for the Growing Rat, as Determined by “The Complete Protein Evaluation Method”

Haque

Njaa

1988

Acta Agriculturae Scandinavica

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Norway). Sequence in which the amino acids of fish meal proteins becomes limiting for the growing rat, as determined by "The complete evaluation method". Received June 10, 1988. Acta Agric. Scand. 38: 397404, 1988. The sequences of limiting amino acids in two fish meals were determined in rat growth experiments by the procedure proposed by Schelling (1975) for the complete evaluation of dietary protein (CPE). In preliminary studies the fish meals had been found not to have methionine as the first limiting amino acid. The results sho\ved that histidine, methionine, tryptophan and threonine were the most limiting amino acids in both meals. For practical purposes histidine and methionine were first co-limiting in both, tryptophan came next in one followed by threonine; in the other the two latter were co-limiting. The further sequences were not clearly identified by the procedure used. Calculations of chemical scores identified methionhe, tryptophan and histidine as the most limiting in that order, but limitations in threonine were not detected. The experience gained indicates that the procedure has a potential for detecting the most limiting amino acids in animal protein.

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“…Because of their high collagen content and poor amino acid balance, any increase in bone content in the raw materials may have a negative effect on protein quality. Collagen and gelatin (refined collagen) are deficient in most essential amino acids, such as tryptophan, sulfur amino acids, and isoleucine, whereas they oversupply hydroxyproline, proline, and glycine (Boomgaardt and Baker, 1972;Berdanier, 1998). The amino acid profile of the Daka-40 tested showed that this source contained a high amount of collagen.…”

Section: Nutritional Value Of Pap Sourcesmentioning

confidence: 98%

Effect of four processed animal proteins in the diet on digestibility and performance in laying hens

et al. 2010

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An experiment was performed to investigate the effect of animal vs. vegetable protein sources in the diet of laying hens on the development of hen performance. A diet containing protein sources of only vegetable origin was compared with 4 diets, each containing 1 of 4 processed animal proteins (PAP). Two PAP (Daka-58 and Sonac-60) were classified as meat meals, and the remaining 2 (Daka-40 and Sonac-50) were classified as meat and bone meals. First, fecal digestibility of nutrients in the PAP was determined in Lohmann Brown layers. Hens (n = 132) were housed in 22 cages (6 hens/cage) and allotted to 5 dietary treatments. In the PAP diets (4 replicates/treatment), 100 g/kg of CP of animal origin was added, replacing soybean meal and corn (Zea mays) in the basal diet (6 replicates/treatment). The PAP sources differed largely in chemical composition and digestibility coefficients. Energy content (AME(n)) varied from 1,817 (Daka-40) to 3,107 kcal/kg (Sonac-60), and digestible lysine varied from 15.4 (Daka-40) to 28.3 g/kg (Sonac-50). Subsequently, the effect of a control diet (without PAP) vs. 4 PAP diets (50 g/kg of CP of animal origin from the same batches as used in the digestibility study) on performance was determined. All diets were isocaloric (AME(n) = 2,825 kcal/kg) and isonitrogenous (digestible lysine = 6.8 g/kg). Hens were housed in 40 floor pens (12 hens/pen, 8 pens/treatment) from 20 to 40 wk of age. Feed intake levels of the hens fed the meat and bone meal diets were reduced compared with those of hens fed the meat meal diets, whereas the feed intake level of hens fed the control diet was intermediate. Laying hen performance differed between treatments, being was most favorable for the Sonac-50 treatment and most adverse for the Daka-40 treatment. Differences in laying hen performance seemed to be related partly to differences in feed intake and corresponding amino acid intake.

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Sequence of Limiting Amino Acids in Gelatin for the Growing Chick

Cited by 20 publications

References 13 publications

The Lysine Requirement of Growing Chicks Fed Sesame Meal-Gelatin Diets at Three Protein Levels

The Lysine Requirement of Growing Chicks Fed Sesame Meal-Gelatin Diets at Three Protein Levels

Sequence in Which the Amino Acids of Fish Meal Proteins Become Limiting for the Growing Rat, as Determined by “The Complete Protein Evaluation Method”

Effect of four processed animal proteins in the diet on digestibility and performance in laying hens

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