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Ideal ratio (relative to lysine) of tryptophan, threonine, isoleucine, and valine for chicks during the second and third weeks posthatch.
Six bioassays were conducted to determine the ideal ratios of several amino acids relative to Lys, and gain:feed requirements for Lys were much higher than weight gain requirements. Expand
Ideal amino acid profile for chicks during the first three weeks posthatching.
Most of the indispensable AA in the NRC 1994 AA profile were too high relative to lysine, probably because lysines, the reference AA, was too low relative to the other AA. Expand
Advances in protein–amino acid nutrition of poultry
  • D. Baker
  • Biology, Medicine
  • Amino Acids
  • 1 May 2009
Evidence suggests that glycine (or serine) is a key limiting amino acid in reduced protein [23% crude protein (CP) reduced to 16% CP] corn–soybean meal diets for broiler chicks. Expand
Time course of increased plasma cytokines, cortisol, and urea nitrogen in pigs following intraperitoneal injection of lipopolysaccharide.
It is believed that immunological challenge induces cytokine synthesis and secretion in swine which, in turn, may induce protein catabolism. Expand
Methodology for assessing zinc bioavailability: efficacy estimates for zinc-methionine, zinc sulfate, and zinc oxide.
The bioavailability of zinc-methionine (ZnMET) was compared to that of feed-grade ZnSO4.H2O using three different diets: purified (crystalline amino acid [AA]), semipurified (soy isolate), and complex (corn-soybean [C-SBM]) diet to indicate differences in Zn bioavailability. Expand
Estimation of nutrient requirements from growth data.
Two least squares methods of estimating nutrient requirements from growth data were compared and consistently good fits obtained with the nonlinear models suggest that this approach may generally be more useful. Expand
Growth and plasma zinc responses of young pigs fed pharmacologic levels of zinc.
  • J. Hahn, D. Baker
  • Chemistry, Medicine
  • Journal of animal science
  • 1 November 1993
Daily gain and daily feed intake were increased by ZnO addition, regardless of level, whereas ZnSO4 addition increased these performance indices only at the 3,000 mg of Zn/kg level of supplementation. Expand
Problems and pitfalls in animal experiments designed to establish dietary requirements for essential nutrients.
  • D. Baker
  • Computer Science, Medicine
  • The Journal of nutrition
  • 1 December 1986
Having considered these factors, the data obtained must be subjected to appropriate statistical methods that will allow objective rather than subjective estimation of the maxima or minima being sought (i.e., the "requirement"). Expand
Amino acid fortification of a low-protein corn and soybean meal diet for chicks.
Chicks fed the low-protein diet fortified with the five limiting AA and Glu gained at the same rate with similar feed efficiency and had estimated body fat levels comparable to birds fed the 23% CP, positive control diet. Expand
Effects of different cereal grains and ractopamine hydrochloride on performance, carcass characteristics, and fat quality in late-finishing pigs.
Feeding RAC and different cereal grains, whether based on corn, wheat, or barley with or without RAC, had little to no effect on carcass, meat, or fat quality attributes. Expand