+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Maintenance requirement for valine and efficiency of its use above maintenance for accretion of whole body valine and protein in young chicks

, : Maintenance requirement for valine and efficiency of its use above maintenance for accretion of whole body valine and protein in young chicks. Journal of Nutrition 126(7): 1844-1851

Experiments were conducted with chicks during the period 10-20 d posthatching to assess valine accretion and protein accretion as a function of incremental valine intakes between 5 and 95% of its ideal level (requirement for maximal growth). Chemically defined crystalline amino acid diets were fed, and amino acids other than valine were maintained at minimized excess levels as valine was increased. With dietary valine concentrations representing 5, 10, 40, 55, 70 and 95% of the ideal level, weight gain (r2 = 0.98), protein accretion (r2 = 0.98) and valine accretion (r2 = 0.99) increased linearly (P < 0.01) as a function of valine intake. Slope of the valine accretion curve was 0.73 +/- 0.02, and there was no indication of decreased valine utilization as valine intake increased to 95% of its required level for maximal growth. Using the linear regression equation, i.e., valine accretion (Y) regressed on valine intake (X), the maintenance valine requirement (X at Y zero) was 18.4 mg/d or 48.8 mg/d per kg body weight3/4. Whole body valine was 4.72 g/100 g whole body protein accreted and was constant at all levels of valine intake. At zero protein accretion, however, valine accretion was negative (-3.8 mg/d). Thus, the valine requirement for zero valine accretion (48.8 mg/d per kg(3/4) was higher than the valine requirement for zero protein accretion (32.4 mg/d per kg3/4). In a subsequent experiment, also involving whole body valine and protein accretion, valine doses of 40, 55 and 70% of ideal were compared using amino acid-balanced diets (amino acids other than valine at 55, 70 and 85% of ideal levels, respectively) or imbalanced diets (amino acids other than valine at a constant 100% of their ideal levels). Straight-line (P < 0.01) valine and protein accretion responses occurred, but slope of the response curves (accretion vs. valine intake) was lower in the imbalanced series than in the balanced series. The results of these studies suggest a constant utilization above maintenance of absorbed valine over a wide range of valine intake.

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 002889048

PMID: 8683346

PDF Full Text: Submit

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Niezgoda, J; Pierzchala, K; Bobek, S; Podany, J., 1983: Effect of vasotocin and prostaglandins on blood flow through the hens oviduct. Acta universitatis agriculturae: Sbornik Vysoke skoly zemedelske v Brne Rada A: Spisy fakulty agronomicke1(3): 167-174

Nemerovsioi, L. I.; Strel'nikov, G.I., 1965: A spirograph of the open type. A dry spirograph is described which consists of inspiration and expiration bellows united with the mouthpiece through the corresponding valves. The common movable cover of both bellows is connected to the pen. The spirogram is recorded on moving p...

Swanson, S. Todd; Fang, Hong; O'leary, Marion, 1995: Are all ribulose 1,5-bisphosphate carboxylase/oxygenases the same?. FASEB Journal 9(6): A1481

Tiwari, A. S.; Yadav, L. N.; Laxman Singh; Mahadik, C. N., 1977: Spreading plant type does better in pigeon pea. Five lines of Cajanus cajan were grown at three spacings. The spreading lines Gwalior 3 and the local gave higher yields than the three semicompact lines. Yields of seed per ha were similar at spacings of 45 X 15 cm and 90 X 30 cm but much lower a...

Von Der Pahlen, A.; Crnko, J., 1965: Lettuce mosaic virus in Mendoza and Buenos Aires. A description of the disease, reported for the first time in Argentina, together with a determination of the percentage of seed transmission. Var. Gallega is resistant to natural infection.

Fernández, Luis; Vari, Richard P., 2012: New Species of Trichomycterus Teleostei Siluriformes from the Andean Cordillera of Argentina and the Second Record of the Genus in Thermal Waters. <i>Trichomycterus minus,</i> new species, is described from an Andean stream in Provincia de Catamarca, Argentina. The new species is distinguished from congeners by the number of supraorbital pores, the form of the supraorbital canal...

Banerjee, P.R., 2014: Dowry in 21st-century India: the sociocultural face of exploitation. The World Health Organization (2009) implicates deep-rooted cultural and social norms as influential contributing factors toward physical and intimate partner violence against women. The dowry system is a social practice that perpetuates the oppre...

Groenenberg, Heleen; Van-Der-Sluijs, Jeroen, 2005: Valueloading and uncertainty in a sector-based differentiation scheme for emission allowances. The Triptych approach is a sectoral approach for differentiation of quantitative greenhouse gas emission reduction objectives. In this study we investigate the ranges in emission reduction targets that result from differences in valueladen assumpt...

Raczek E.; Stolarek J., 1979: The effect of calcium ions on respiratory activity in mitochondria of etiolated shoots zea mays. The effect of Ca ions on respiratory activity of mitochondria isolated from shoots of Z. mays seedlings was investigated. The respiratory reaction of mitochondria to Ca2+ depends on the presence of P in the incubation media. The addition of 80 .mu...

Wainwright, S.D.; Wainwright, L.K., 1978: Regulation of the diurnal cycle in activity of serotonin acetyltransferase in the chick pineal gland. When chick pineal glands were explanted into organ culture at midlight phase of a diurnal cycle of illumination and incubated in the dark, they developed marked increases in serotonin acetyltransferase (acetyl coA:arylamine N-acetyltransferase; EC...