Immunopathological investigation and genetic evolution of Avian leukosis virus Subgroup-J associated with myelocytomatosis in broiler flocks in Egypt

Table 1 The descriptive flock data of the investigated broilers for ALV-J detection from 2021 to 2023 in the El-Sharqia, El-Dakahliya, and Al-Qalyubiyya Egyptian governorates

Flock location	Broiler farms	Flock age	No. of birds	Collected samples				Date of collection
Flock location	Broiler farms	Flock age	No. of birds	Blood	Liver	Spleen	Kidney	Date of collection
Sharqia	6	5 weeks	9000–12,000	38	8	5	4	2021
El-Dakahliya	3	7 weeks	5000–7000	29	5	3	2	2023
Al-Qalyubiyya	9	6 weeks	12,000–15,000	50	10	11	9	2022

ISSN: 1743-422X