Banca de QUALIFICAÇÃO: BIANCA PACHIEL MEDEIROS

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : BIANCA PACHIEL MEDEIROS
DATE: 26/07/2022
TIME: 09:00
LOCAL: Plataforma meet
TITLE:

Occurrence and etiology of anemia processes in cattle and use of supplements of minerals and vitamins for treatment.

KEY WORDS:

Anemia. Calves. Iron. Erythrogram. Blood count.

PAGES: 131
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUBÁREA: Clínica e Cirurgia Animal
SPECIALTY: Clínica Veterinária
SUMMARY:

Copper, cobalt and iron, whose deficiencies are associated with the development of anemia in ruminants, have different relevance in the context of probable deficiencies and intoxications. While copper and cobalt are related to deficiencies in large areas of land in Brazil, iron deficiency rarely occurs in cattle, except in young animals with an exclusive diet of milk and in the form secondary to blood loss. However, oral or parenteral iron supplementation is widely used, unnecessarily and even recommended by veterinarians, leading to unnecessary expenses and even the risk of intoxication or adverse effects. In this context, the objective of this work was to evaluate the specialized literature regarding the occurrence and main causes of anemia in cattle, the commercial products available for treatment and the conditions of use of supplements in relation to the occurrence of anemia in young and adult cattle, without signs of illnesses and with different ailments. In addition, a retrospective study of anemia cases was carried from the results of blood counts of 1405 healthy young and adult cattle, with different diseases, of different origins, by manual and automated methods, carried out between 2002 and 2020. Anemia was identified in 694 (49.4%) samples being the normocytic normochromic (34.9% of the samples) more frequent, followed by the macrocytic (15.4%). Most cases were mild (229 – 76.6%) with VG varying between 18 and 23%, with normocytic normochromic anemia predominating (45%). Healthy and diseased calves had anemia (21.9% and 39.8%, respectively). Normocytic anemia was also more frequent in calves, with hypochromic anemia being more common in healthy calves (54%) and normochromic in sick (55.3%). The identified cases are probably related to chronic blood loss, mainly from external or gastrointestinal parasites, in addition to hemoparasitosis, and in some cases due to chronic poisoning by fern (Pteridium sp.) and copper deficiency. Obtaining blood samples at a time when anemia was established, but without a significant reduction in hemoglobin or even before the bone marrow response was evident, may in part explain the large number of cases of normocytic normochromic anemia identifie.

BANKING MEMBERS:
Presidente - 387400 - RITA DE CASSIA CAMPBELL MACHADO BOTTEON
Interno - 1151827 - BRUNO RICARDO SOARES ALBERIGI DA SILVA
Interno - 3015985 - FELIPE FARIAS PEREIRA DA CAMARA BARROS
Externo ao Programa - 3254723 - FABRICIO NASCIMENTO GAUDENCIO - UFRRJ