Diagnosis of Infectious Laryngotracheitis Outbreaks on Layer Hen and Broiler Breeder Farms in Vojvodina, Serbia [PDF]
, 2022 Infectious laryngotracheitis (ILT) is a respiratory disease of poultry characterized by high morbidity and variable mortality. ILT is caused by Gallid alpha herpesvirus-1 (GaHV-1), which is transmitted horizontally and most susceptible are chickens older
Sava Lazić +14 more
core +1 more source
Iron requirements of broiler breeder hens
Poultry Science, 2017 A study was conducted to investigate Fe requirements of broiler breeders. One-hundred-fifty-six Cobb 500 broiler breeder hens were individually placed in electrostatically painted cages at 22 weeks. The study was composed of an adaptation phase, in which hens were fed corn-soy-wheat bran diets until 35 wks.
Diogo, Taschetto +6 more
openaire +2 more sources
The chicken embryo and its micro environment during egg storage and early incubation [PDF]
, 2008 When egg storage periods are prolonged (>7 days), hatchability and chick quality declines. The reason for this decline has been investigated, but is still not completely understood.
Brand, H., van den +3 more
core +1 more source
Plasma metabolomic profiling reveals potential onset of lay biomarkers in broiler breeders
Poultry Science, 2022 : Changes in the metabolic fingerprint of plasma during the onset of lay in broiler breeders were investigated. We used metabolomics to identify biomarkers of sexual maturity and to provide a comprehensive understanding of breeder metabolome during the ...
Mohammad Afrouziyeh +3 more
doaj +1 more source
The effects of the breeder index value on the microscopic structure of egg shells, hatching results, and hybrid performance [PDF]
, 2021 The quality of egg shell and bone properties of hen are important for hen welfare, consumers, and producers. Parameters of the genetic selection have both desirable and undesirable effects among themselves.
Yalçın, S. +5 more
core +1 more source
Broiler Breeder Males: Feed and Nutrition Discussion [PDF]
, 2022 The methods for feeding broiler breeder males have evolved over recent decades, and further revisions will likely be needed as males become more challenging to manage.
Hudson, Benton
core +1 more source
Copper requirements of broiler breeder hens
Poultry Science, 2018 One-hundred-twenty Cobb 500 hens, 20 wk of age, were randomly allocated into individual cages with the objective of estimating Cu requirements. After being fed a Cu deficient diet for 4 wk, hens were fed diets with graded increments of supplemental Cu (0.0; 3.5; 7.0; 10.5; 14; and 17.5 ppm) from Cu sulfate (CuSO4 5H2O), totaling 2.67; 5.82; 9.38; 12.92;
E, Berwanger +6 more
openaire +2 more sources
Feeding regimen of breeder broiler hen influences growth performance of the broiler chickens [PDF]
, 2017 This experiment was conducted to evaluate the effect of feeding regimens for the breeder broiler hen on the performance of broiler chickens. Breeder broiler hens (196 hens and 28 roosters; age between 31 and 38 wk) were randomly assigned to 7 dietary ...
Bahar, Bojlul +11 more
core +1 more source
Zinc requirements of broiler breeder hens
Poultry Science, 2019 One hundred and twenty Cobb 500 hens, 20 wk of age, were randomly allocated into individual cages with the objective of estimating their Zn requirements. The study was composed of 3 phases: adaptation to cages (basal diet), depletion (deficient diet containing 18.7 ± 0.47 ppm Zn) for 7 wk, and experimental phases.
A N, Mayer +6 more
openaire +2 more sources
Evaluation and characterization of breast quality of broiler breeder hen in the end of productive cycle [PDF]
, 2010 The objective of this study was to evaluate the meat quality characteristics in broiler breeder hen. For this purpose, 40 breast fillet samples (Pectoralis major) of breeder hen, Ross strain with 68 and 69 weeks of age, were collected.
Sanfelice, Cristiane [UNESP] +10 more
core +4 more sources