Results 141 to 150 of about 787,178 (288)

Bioavailability of Tryptophan Biomass for Laying Hens

Animals
Two concurrent assays were conducted with the objective of evaluating the bioequivalence and determining the relative bioavailability value (RBV) of L-tryptophan biomass 60% for laying hens. In both assays, L-tryptophan 98% was used as the reference source. A total of 216 hens were used in the two assays.
Stéphane Cristyne O. Estevão, Gabriel Henrique Nacamura da Silva, Livia Rastoldo R. Oliveira, Larissa Oliveira dos Santos, Erikson Kadoshe M. Raimundo, Rita Brito Vieira, Tiago A. Rodrigues, Bernardo Rocha F. Nogueira, Eliane Aparecida da Silva, Lizandra Amoroso, Michele Bernardino de Lima, Edney Pereira da Silva   +11 more
openaire   +3 more sources

Performance of Layer Hen Fed Fermented Jatropha Curcas L. Meal Supplemented with Cellulase and Phytase Enzyme [PDF]

, 2012
The objective of the experiment was to study the effect of feeding fermented Jatropha curcas L.meal (JCM) supplemented with cellulase and phytase on the performances of ISA-Brown laying henaged 25-30 weeks.
Darmansyah, A. (A), Mutia, R. (R), Sumiati, S. (S)   +2 more
core  

The effect of calcium depletion on the chemical composition of bone minerals in laying hens [PDF]

, 1956
T. G. Taylor, John H. Moore
openalex   +1 more source

Effects of the compulsory indoor confinement of organic layer poultry: a dust storm! [PDF]

, 2006
In August 2005 an order was issued in the Netherlands for free range poultry to be kept indoors to prevent the introduction of avian influenza. The Animal Sciences Group of Wageningen UR (Wageningen University and Research Centre) conducted a telephone ...
Kijlstra, Aize, van der Werf, Joop
core   +1 more source

Feather-pecking response of laying hens to feather and cellulose-based rations fed during rearing [PDF]

, 2017
Recent studies in laying hens have shown that feather peckers eat more feathers than nonpeckers. We hypothesized that food pellets containing feathers would decrease the birds' appetite for feathers and thereby also decrease feather pecking.
Bessei, W., Harlander-Matauschek, A., Kriegseis, I., Meyer, B., Würbel, H., Zentek, J.   +5 more
core  

Effects of restricted methionine and energy intake on egg weight and shell quality : research note

Agricultural and Food Science, 2008
An experiment involving two laying hen hybrids and four dietary treatments was conducted to study the effects of dietary methionine restriction (MR) (3,05 g/kg, MR 100MR did not significantly affect hen-day production (%) but reduced linearly ...
T. KIISKINEN, E. HELANDER
doaj  

Translucent eggs of laying hens: a review

Poultry Science
Eggshell quality is a significant characteristic that influences consumer preferences. Eggshell translucency is a common defect in the appearance of eggshells, which are characterized by gray spots that are visible to the naked eye under natural light.
Lin Xuan, Jiangxia Zheng
openaire   +3 more sources

Effect of Alfalfa Saponin on the Performance of Chicks and Laying Hens

, 1957
J.O. Anderson
openalex   +1 more source

The Economics of Regulations on Hen Housing in California [PDF]

Beginning January 1, 2015, conventional cage housing for egg-laying hens is scheduled to be prohibited in California. We consider the economic implications of the new hen housing regulations on the California shell egg industry.
Matthews, William A., Mench, Joy A., Rosen-Molina, J. Thomas, Sumner, Daniel A.   +3 more
core   +1 more source

Determination of Minimum Horizontal Distance between Laying-Hen Perches [PDF]

, 2014
The objective of the study was to determine minimum horizontal distance (HD) between perches for laying hens using qualitative and quantitative behavioral analysis. A real-time monitoring system was developed to record hen’s perching behaviors, such as
Liu, Kai, Shepherd, Timothy, Xin, Hongwei, Xin, Hongwei, Zhao, Yang   +4 more
core   +2 more sources