Determination of the Limiting Amino Acids in Corn-Soybean Oil Meal Diets for Young Turkeys , ,

Fitzsimmons, R. C.; Waibel, P. E.

doi:10.3382/ps.0410260

Cited by 11 publications

(5 citation statements)

References 10 publications

(9 reference statements)

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“…With diets containing added Met and Lys, Baldini et al (1954) found that 20% protein was sufficient for small-type birds, whereas Klain et al (1954) reported that 25.5% protein was required for large-type birds. Fitzsimmons and Waibel (1962) concluded that Met and Lys were the first and probably second limiting amino acids, respectively, for large-type turkeys in corn-soybean meal diets of 20% protein and that additional amino acid deficiencies must exist at this protein level, as it was not possible to attain control growth by supplementation with Met and Lys alone. Stas and Potter (1982) reported that added Lys, Val, Thr, and He were required for maximum growth of heavy-type young turkeys with a 22% protein cornsoybean meal diet containing .3% added Met.…”

Section: Introductionmentioning

confidence: 96%

Replacing Protein in Corn-Soybean Turkey Diets with Methionine and Lysine

et al. 1995

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The extent to which dietary protein can be minimized by using Met and Lys supplements for market turkeys has been investigated in three experiments involving 2,750 birds. Large White (Nicholas) male turkey poults were fed corn-soybean meal diets of varying protein level to supply Lys from 80 to 120 of NRC (1984) from day-old to 18 wk of age. Performance with diets of 90% NRC Lys was equal to that with diets of higher Lys, provided that SAA were at 100% of NRC. Up to .2% Lys.HCl could be substituted into the 100 or 90% of NRC diets with no depression in performance, suggesting that the other essential amino acids were present in adequate amounts. When turkeys were fed diets of 85% of NRC (1984) Lys, maximum growth and breast meat yield were obtained with supplemental SAA at 100% during 0 to 18 wk of age and Lys at 100% during 12 to 18 wk of age. The requirements for other amino acids were supplied by diets formulated to provide 85% of the Lys requirement from protein. These values were for turkeys subjected to 18 C during final growout; they were not adequate in warmer temperatures.

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Section: Introductionmentioning

confidence: 96%

Replacing Protein in Corn-Soybean Turkey Diets with Methionine and Lysine

et al. 1995

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“…1976. 2. Fitzsimmons and Waibel (1962) showed that the lysine requirement to 4 weeks of age was 1.36% of a 24% protein diet. Sherman, M., and M. M. Rosenberg, 1954.…”

Section: Introductionmentioning

confidence: 99%

Lysine Requirements of Starting and Growing Turkeys

Tuttle

Balloun

1974

Poultry Science

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The lysine requirement of large-type turkey poults was studied in three experiments. For male poults to 4 weeks of age, diets containing 22% or 24% protein, and less than 1.50% lysine, did not support growth equivalent to that obtained when 28% protein diets were fed, or when the low-protein diets were supplemented to give a concentration of 1.50% or greater of lysine. It is concluded that the minimum lysine requirement in this period was 1.50% of a 28% protein diet or 5.3% of the protein. As a function of energy, the lysine requirement was at least 0.52% per megacalorie of metabolizable energy (M.E.) per kg. of diet.For male poults 4 to 8 weeks of age, the lysine requirement was 1.40% of a 26% protein diet or 5.4% of the protein. As a function of energy, the lysine requirement for this period was 0.46% per megacalorie of M.E. per kg. of diet.For male poults 8 to 12 weeks of age, diets containing less than 22% protein did not support maximum growth. For this stage of growth, the requirement was 22% protein with more than 5.09% of the protein as lysine, or 0.40% lysine per megacalorie of M.E. per kg. of diet.The lysine requirement was not a constant percentage of the protein over a range of protein concentrations in the diet within an age period, but did remain a constant percentage of the protein from 1 day to 8 weeks of age. In the 8-12 week period, lysine requirements were less (as a percentage of the protein) than at earlier stages of growth. ABSTRACTDiets composed mostly of low selenium corn and torula yeast were fed to laying hens to produce a selenium and/or vitamin E deficiency. The basal diet was also supplemented with 101. U. of vitamin E per kg., or 0.10 mg. /kg. selenite selenium, or a combination of vitamin E and selenium. Hens fed the basal diet decreased in egg production during the third month and for the remainder of the experiment, a decrease which was mostly corrected by vitamin E, and completely corrected by selenium. Fertility and hatchability of eggs were also low on the basal diet, and were also partly corrected by vitamin E, and completely corrected by selenium.The selenium content of lyophilized egg white and yolk is reported along with the selenium content of several tissues. Gross deficiency signs of the laying hen are also described.

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“…Increased dietary MET intake is associated with greater egg production and higher egg weight (Harms et al, 1998). Methionine is also limiting for young turkey ( Meleagris gallopavo ) growth (Fitzsimmons and Waibel, 1962; National Research Council, 1994).…”

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BSSS53 as a Donor Source for Increased Whole‐Kernel Methionine in Maize

Olsen

Krone

Phillips³

2003

Crop Science

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Increasing the whole‐kernel methionine [MET; 2‐amino‐4‐(methylthio)‐butyric acid] level of maize (Zea mays L.) would improve the quality of the grain for poultry feed. Our objective was to increase the MET levels of A632, B73, Mo17, A632/Mo17, B73/A632, and B73/Mo17, with the high‐MET inbred BSSS53 as a donor parent. Backcross‐derived lines were evaluated per se in trials during 3 yr, and hybrids among subsets of these lines were evaluated in three replicates during 1998. Methionine levels of the best A632 recoveries were increased by 17% after three backcrosses and 11% after four backcrosses. Methionine levels of the best B73 recoveries were increased by 20% after three backcrosses and 17% after four backcrosses. In the Mo17 genetic background, MET levels of the best recoveries were increased by 55% after three backcrosses and 31% after four backcrosses. Crosses among the highest MET backcross‐derived lines produced hybrids with significant 23 to 43% increases in whole‐kernel MET compared with corresponding control hybrids. Significant increases in the MET levels of experimental hybrids indicate that BSSS53 is a useful donor source of whole‐kernel MET and that selection within normal dent maize germplasm can be effectively utilized to produce high‐MET hybrids.

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Determination of the Limiting Amino Acids in Corn-Soybean Oil Meal Diets for Young Turkeys , ,

Cited by 11 publications

References 10 publications

Replacing Protein in Corn-Soybean Turkey Diets with Methionine and Lysine

Replacing Protein in Corn-Soybean Turkey Diets with Methionine and Lysine

Lysine Requirements of Starting and Growing Turkeys

BSSS53 as a Donor Source for Increased Whole‐Kernel Methionine in Maize

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