Now showing items 1-10 of 157
Reevaluation of the digestible lysine requirement for broilers based on genetic potential
(Universidade de São Paulo (USP), 2014-05-01)
Broiler strains available in the poultry industry present different requirements for dietary lysine due to their different growth potentials as a result of their genetic makeup. This study aimed to determine the model ...
NITROGEN REMOVAL FROM SEWAGE IN A SERIE OF AEROBIC-ANOXIC SUBMERGED BIOFILTERS
(Instituto de Ingeniería, 2015)
Modelling the maximum potential of nitrogen deposition and requirements of lysine for broilers
(Csiro Publishing, 2014-01-01)
This study aimed to develop a dynamic model to estimate lysine (Lys) requirements based on the maximum theoretical potential of nitrogen deposition (NDmaxT) and metabolic bodyweight (MBW) of growing broilers. Three N balance ...
MECHANISMS FOR RETENTION OF BIOAVAILABLE NITROGEN IN VOLCANIC RAINFOREST SOILS
(NATURE PUBLISHING GROUP, 2008)
Individual responses of growing pigs to threonine intake
(Revista Brasileira Zootecnia Brazilian Journal Animal Sci, 2018-01-01)
A nitrogen balance test was performed to evaluate the individual responses of growing pigs to threonine intake. Eight commercial barrows were used (body weight ranging from 15 to 20 kg). A dose-response study was performed, ...
Modelling of the nitrogen deposition and dietary lysine requirements of Redbro broilers
(Csiro Publishing, 2014-01-01)
The aim of this study was to determine the coefficients of the Goettingen model for Redbro birds and estimate the digestible lysine requirements. To determine the model parameters, three nitrogen balance trials were performed ...
Dietary supplementation of lysine and/or methionine on performance, nitrogen retention and excretion in pacu Piaractus mesopotamicus reared in cages
(Elsevier B.V., 2009-10-16)
A study was conducted to evaluate the effect of dietary supplementation of lysine and/or methionine on growth performance, nitrogen retention and excretion in pacu juveniles reared in cages. Five diets were prepared; four ...
Modelling of lysine requirement in broiler breeder hens based on daily nitrogen retention and efficiency of dietary lysine utilization
(Elsevier B.V., 2017-04-01)
The current feeding programs used for broiler breeder hens need information on how to make use of the genetic potential more efficiently by modelling the amino acid (AA) requirements. Thus, this study aimed to determine ...
Maintenance valine, isoleucine, and tryptophan requirements for poultry
(Oxford Univ Press, 2016-04-01)
Poultry maintenance requirements for valine, isoleucine, and tryptophan were measured by nitrogen balance using different unit systems. The nitrogen balance trial lasted 5 d with 48 h of fasting (with roosters receiving ...
Optimal in-feed amino acid ratio for broiler breeder hens based on deletion studies
An ideal amino acid ratio (IAAR) for breeder hens is needed for maximum nitrogen retention (NR) taking into account nitrogen deposition in body (NDB), feathers (NDF) and egg mass (NEM) to improve dietary protein efficiency. ...