Results 31 to 40 of about 8,120,287 (316)

Effects of amino acid levels during rearing on Cobb 500 slow-feathering broiler breeders: 1. Growth and development

open access: yesPoultry Science, 2021
: Adequate pullet nutrition is essential to reach BW and suitable body composition for reproduction. An experiment was conducted to determine the effects of 4 dietary amino acid (AA) levels on BW, flock uniformity, body conformation, organ, leg, and ...
Maria Camila Alfaro-Wisaquillo   +6 more
doaj   +1 more source

Lisina digestível para suínos machos não castrados de alto potencial genético em fase de crescimento Digestible lysine for pigs not castrated of high genetic potential in growth phase

open access: yesCiência Rural, 2010
Este estudo foi realizado com o objetivo de determinar a exigência de lisina digestível para suínos machos não castrados de alto potencial genético em fase de crescimento.
Charles Kiefer   +2 more
doaj   +1 more source

Statistical Models of the Protein Fitness Landscape: Applications to Protein Evolution and Engineering [PDF]

open access: yes, 2012
Understanding the protein fitness landscape is important for describing how natural proteins evolve and for engineering new proteins with useful properties.
Romero, Philip Anthony
core   +1 more source

Digestible isoleucine requirements for 22- and 42-day-old broilers

open access: yesActa Scientiarum: Animal Sciences, 2015
Current experiment established different criteria to evaluate the requirements of digestible isoleucine for 22- and 42-day-old broilers by different regression models (quadratic, exponential and Linear Response Plateau) and, in the case of statistical ...
Karina Ferreira Duarte   +5 more
doaj   +1 more source

Growth, nutrient retention, innate immune response, and intestinal morphology of juvenile, soy-naïve hybrid striped bass, Morone saxatilis x M. chrysops fed commercial-type, soy-based, ideal protein, fish meal replacement diets

open access: yes, 2020
To develop plant-based diets for hybrid striped bass (HSB), Morone chrysops × M. saxatilis, we evaluated six soy products in extruded, ideal protein, fish meal (FM) replacement diets fed to soy-naive juveniles (3.72 ± 0.01 g initial weight) for up to 5 ...
Y. Ramena   +10 more
semanticscholar   +1 more source

Digestible lysine levels in semi-heavy laying hens in the period from 28 to 44 weeks of age

open access: yesActa Scientiarum: Animal Sciences, 2014
This study aimed to evaluate the performance of laying hens subjected to heavy semi-low crude protein (14.0%) and lysine levels while maintaining the same relation of digestible amino acid/ digestible lysine.
Tiago Antônio dos Santos   +5 more
doaj   +1 more source

A synopsis of recent work on the amino acid nutrition of layers1

open access: yesJournal of Applied Poultry Research, 2021
Summary: This review, a summation of work presented at the Virtual 2020 Poultry Science Association Annual Meeting, addresses changes in laying hen performance and techniques to manage hens that require fine-tuning amino acid minimums.
M.T. Kidd, R.E. Loar, II
doaj   +1 more source

Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans Redução de aminoácidos em rações para frangos de corte suplementadas com fitase e elaboradas de acordo com diferentes planos nutricionais

open access: yesCiência e Agrotecnologia, 2012
The need for suitable diets in chickens, considering the ideal protein concept associated with phytase, is important in order to improve the productivity of birds.
Jeferson Eder Ferreira Oliveira   +4 more
doaj   +1 more source

Diets with reduced levels of nutrients supplemented with phytase and amino acids for broilers Dietas com reduzidos níveis de nutrientes, suplementadas com fitase e aminoácidos, para frangos de corte

open access: yesCiência e Agrotecnologia, 2012
One performance experiment and another metabolism experiment were conducted simultaneously with broilers from 22 to 35 days of age, evaluating five diets in six replicates. The control diet, without phytase, contained 19% of crude protein (CP); 0.412% of
Elisangela Minati Gomide   +5 more
doaj   +1 more source

Digestible lysine levels for laying hens and their effects on egg quality

open access: yesActa Scientiarum: Animal Sciences, 2014
Egg quality of semi-heavy laying hens fed on low protein diets (14.0% CP) and on different lysine levels is evaluated, while maintaining the same ratio of digestible amino acids / digestible lysine.
Tiago Antônio dos Santos   +5 more
doaj   +1 more source

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