Banca de QUALIFICAÇÃO: KAROLAYNE RAYARA SANTOS DE LIMA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : KAROLAYNE RAYARA SANTOS DE LIMA
DATE: 27/02/2023
TIME: 14:00
LOCAL: Videoconferência
TITLE:

AQUEOUS EXTRACT OF MORINGA LEAFS AND OIL OF MORINGA SEED AS REPLACEMENT OF ANTIMICROCBIAL, IN DIETS FOR BROILER CHICKENS

KEY WORDS:

Medicinal plants, Moringa oleifera Lam,Organs, Phytogenic additive

PAGES: 55
BIG AREA: Ciências Agrárias
AREA: Zootecnia
SUBÁREA: Nutrição e Alimentação Animal
SPECIALTY: Avaliação de Alimentos para Animais
SUMMARY:

The objective was to evaluate the effects of the inclusion aqueous extract of moringa leaf (AEML) and oil of moringa seeds (OMS), replacing the commercial antimicrobial, on the productive performance of broiler chickens. A mixed batch with 336 one-day-old broiler chicks, Cobb 500 lineage, distributed in CRD, within seven treatments and six replications of eight birds per experimental unit. Treatments consisted of seven diets: positive control-PC (Zinc Bacitracin 0.05); negative control-NC, 0.2% OMS (obtained by pressing the seeds), and five other diets containing increasing levels of AEML (0.25; 0.50; 0.75 and 1.0%). The experiment lasted 42 days. The diets were isonutritive and isoenergetic. Food and water consumption was ad libitum throughout the experimental period. Performance characteristics such as weight gain (WG), feed intake (FI) and feed conversion (FC) were evaluated from 1 to 42 days. At 21 days of age, a bird with average weight of the plot was slaughtered by cervical dislocation to obtain the relative weight of the organs and length of the intestine. Two birds with average weight of the plot, at 42 days of age, were subjected to solid fasting for 6 hours, followed by conventional slaughter, for the evaluation of hot (HCY) and cold (CCY) carcass yields, commercial cuts (breast, thighs, drumstick, wings), belongings (back, neck, feet and abdominal fat), in addition to the relative weight of the organs and length of the intestine. The cecal pH of the birds was also determined. No significant differences (P>0.05) were observed for the variables performance, carcass, commercial cuts, belongings and abdominal fat at 42 days of age. Only the relative weight of the liver at 21 days of age showed a significant difference (p=0.02), with the highest weight being observed in the treatment with OSM, when compared to the treatments with 0.25 and 1% AEML. At 42 days of age, a significant difference was found only for the weight of the proventriculus (P=0.04), where the treatment with 0.75% AEML showed greater weight in relation to the PC treatment; pancreas weight (P=0.02), with greater weight for the AEML 0.25 treatment, compared to the AEML 0.75% treatment; and greater heart weight in the 0.50%AEML treatment compared to the 1% AEML treatment. When only the addition of AEML levels was evaluated, a decreasing linear effect was observed (Y= 0.116000-0.186667X; R² = 71.38% ) for heart weight. It is concluded that the addition of OMS and AEML in the broiler diet, replacing zinc-bacitracin, does not affect the performance and carcass yield of the birds. However, the inclusion of 0.75% AEML in the diets can promote an increase in the relative weight of the proventriculus and a reduction in the relative weight of the pancreas of birds at 42 days of age.

COMMITTEE MEMBERS:
Presidente - 1408673 - CLÁUDIA DA COSTA LOPES
Externa ao Programa - 1323030 - JANETE GOUVEIA DE SOUZA - UFRNExterna à Instituição - ANDREZA LOURENÇO MARINHO