Banca de QUALIFICAÇÃO: ROGÉRIO DAMIÃO DE SOUZA JÚNIOR

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : ROGÉRIO DAMIÃO DE SOUZA JÚNIOR
DATA : 29/11/2018
HORA: 08:30
LOCAL: POP Centro de Convivência
TÍTULO:

Evaluation of the FAMACHA © method for the detection of Haemonchus contortus anemia in goats and sheep

PALAVRAS-CHAVES:

FAMACHA; Goats and Ovine

PÁGINAS: 62
GRANDE ÁREA: Ciências Biológicas
ÁREA: Parasitologia
RESUMO:

The aim of the present study was to compare the sensitivity and specificity of the FAMACHA © method for the detection of Haemonchus contortus anemia in goats and sheep. For this, goat and ovine herds of Embrapa Goats and Sheep and EAJ / UFRN were evaluated, totaling 4568 observations of FAMACHA © and globular volume (VG) for sheep and 825 for goats. Four standard values of VG (≤15%, ≤18%, ≤19% and ≤22%) were chosen as cutoff points. The specificity (Es) and sensitivity (Se) of the method and the concordance (kappa value - Ƙ) between FAMACHA © and VG were determined. In all VG cut-off points, FAMACHA® Se in ovine animals of Embrapa Goats and Ovines increased when FAMACHA 3 animals were included as anemic (75% to 92%). Es was higher in goats than in sheep at all VG cut-off points when FAMACHA 3 animals were not included as anemic (99.4% and 99.8%). For the EAJ / UFRN sheep herd, higher values of Se were observed when FAMACHA 3 animals were included as anemic (48.5% to 51%). The Es of these animals ranged from 88.1% to 90.1% when FAMACHA 3 animals were not included as anemic. The evaluation of the FAMACHA © method for the goats of the EAJ / UFRN was not real, since the parasite load of H. contortus did not reach the minimum of 60% recommended. The highest values of correct treatments were found at all VG cut-off points for both Embrapa Goats and Ovine herds when FAMACHA 4 and 5 were considered positive for anemia (75.7% to 91% for sheep and 82.1% to 98.5% for goats). In the sheep of EAJ / UFRN the highest values of correct treatment were found when FAMACHA 3 animals were not included as anemic (65.13% to 78.2%). The value Ƙ for sheep of Embrapa Goats and Ovine herds ranged from 0.320> Ƙ <0.560, being higher when FAMACHA 3 was not included as positive for anemia, indicating a reasonable to moderate concordance. For goats, the value Ƙ = 0.620 for PCV ≤19 was observed, with substantial agreement being inferred. In the EAJ / UFRN herd, valores values indicated a reasonable concordance for sheep (0.067> Κ <0.074) and poor agreement for goats (Ƙ ≤ 0.02 (P> 0.05). FAMACHA © method can be applied in cases of haemocosis in both herds, but studies aiming at a better standardization of the GV cut values in goats are still necessary to increase the Se of the method for this species.

MEMBROS DA BANCA:
Presidente - 1714262 - LILIAN GIOTTO ZAROS DE MEDEIROS
Externo ao Programa - 1282620 - HENRIQUE ROCHA DE MEDEIROS
Externo à Instituição - LUIZ DA SILVA VIEIRA - EMBRAPA