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The effects of propolis on antibody production by laying hens
(Poultry Science Assoc Inc, 2011-06-01)
Propolis is a honeybee product showing several biological properties that enhance the immune response, depending on the concentration and intake period. Because propolis possesses an immunomodulatory action on mammals, the ...
The effects of propolis on antibody production by laying hens
(Poultry Science Assoc Inc, 2011-06-01)
Propolis is a honeybee product showing several biological properties that enhance the immune response, depending on the concentration and intake period. Because propolis possesses an immunomodulatory action on mammals, the ...
Infection of commercial laying hens with Salmonella Gallinarum: clinical, anatomopathological and haematological studies
(Fundação APINCO de Ciência e Tecnologia Avícolas, 2007-06-01)
This study aimed at evaluating the susceptibility of commercial laying hens to Salmonella Gallinarum (SG). Two experiments were carried using a mutant strain of Salmonella Gallinarum resistant to nalidix acid (SGNALr). In ...
Dietary combination of chelated zinc and threonine and effects on egg production, egg quality and nutrient balance of Brown laying hens from 20 to 49 weeks of age
(2020-09-01)
Studies have evaluated the effects of zinc (Zn) supplementation as an important dietary factor that regulates intestinal amino acid metabolism, protecting and preventing diarrhea. Threonine (Thr) also plays an important ...
Infection of commercial laying hens with Salmonella Gallinarum: clinical, anatomopathological and haematological studies
(Fundação APINCO de Ciência e Tecnologia Avícolas, 2014)
The effects of propolis on antibody production by laying hens
(Poultry Science Assoc Inc, 2014)
Effect of phytase in laying hen diets with different phosphorus sources
(Fundação APINCO de Ciência e Tecnologia Avícolas, 2005-06-01)
An experiment was conducted to evaluate the effects of the enzyme phytase in diets formulated with different phosphorus sources on performance, eggshell quality and excretion of commercial laying hens. Two hundred and ...
Effect of phytase in laying hen diets with different phosphorus sources
(Fundação APINCO de Ciência e Tecnologia Avícolas, 2005-06-01)
An experiment was conducted to evaluate the effects of the enzyme phytase in diets formulated with different phosphorus sources on performance, eggshell quality and excretion of commercial laying hens. Two hundred and ...
Effect of dietary chelated copper and methionine and cysteine on performance, egg quality, and nutrient balance in brown laying hens from 20 to 49 wk old
(2019-06-01)
Using 960 brown laying hens from 20 to 48 wk of age, in a 4 × 5 factorial arrangement, the effects on production, quality of eggs, and nutrient balance of analysed 18, 41, 61, and 111 mg kg−1 of copper (Cu) and of 0.550%, ...
Digestible threonine-to-lysine ratio in diets for brown egg-laying hens
(Oxford Univ Press, 2019-03-01)
The objective of this study was to evaluate the levels of digestible threonine to determine the ideal digestible threonine-to-lysine ratio in the diet of brown egg-laying hens aged 42-54 wk. A total of 270 Dekalb Brown ...