Banca de DEFESA: RABIA ANTONIO CANDA ZIMBA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : RABIA ANTONIO CANDA ZIMBA
DATE: 06/12/2023
TIME: 09:30
LOCAL: dEPARTAMENTO DE ZOOTECNIA - HÍBRIDA
TITLE:

Lipid sources associated with cladodes cactus in lactating goats diet

KEY WORDS:

goat, nutrition, spinless cactus, lipids, performance, fatty acids

PAGES: 96
BIG AREA: Ciências Agrárias
AREA: Zootecnia
SUBÁREA: Nutrição e Alimentação Animal
SPECIALTY: Avaliação de Alimentos para Animais
SUMMARY:

The aim of this study was to evaluate the effect of the inclusion of the coconut by-product and cottonseed associated or not with cladodes cactus on the intake and digestibility of nutrients, ingestive behavior, nitrogen balance, blood parameters, milk production, its constituents, and fatty acids profile. 12 multiparous Saanen goats were used, with an average body weight of 55.0 ± 8.0 kg, 60 days of lactation and an average daily production of 3.3 kg. The animals were grouped in a triple Latin square (4x4). The experimental treatments consisted of: 1 – coconut by-product without cladodes cactus, 2 – coconut by-product with cladodes cactus, 3 – cotton seeds without cladodes cactus, 4 – cotton seeds with cladodes cactus. The addition of cladodes cactus increased (+69.42%) the intake of dry matter compared to diets without cladodes cactus; diets containing coconut by-product were less accepted by goats, reducing dry matter intake by 10.12%; the use of cottonseed as a source of lipid allowed greater production of fat-corrected milk by 22.82% when compared to diets with coconut by-product. The addition of cladodes cactus reduced the digestibility of dry matter and nutrients, favored a greater excretion of nitrogen in faeces (+425.8%) and urine (+162%) consequently lower retention (-17.19% . No significant changes were observed in blood parameters that could indicate liver or kidney damage as a result of feeding cladodes cactus to goats. The addition of cactus to the diet favored an increase in milk production (+611.5gr/day) and fat-corrected milk production (626.4gr/day) compared to diets without cactus. Diets containing cottonseed presented a higher average compared to diets containing coconut by-product, for milk production corrected for fat (+447gr/day), fat content (+0.4%), protein content (+0.2 %), lactose content (+0.3%), non-fat solids (+0.5%) and total solids (+0.9%). There was an interaction effect of cladodes cactus with lipid sources where the addition of cactus favored the accumulation of total saturated fatty acids in milk, consequently a higher atherogenicity and thrombogenicity index, also increased short-chain fatty acids, increased polyunsaturated fatty acids, the n6-n3 ratio, C18:1t11, when associated with cottonseed and reduced when associated with coconut by-product. Milk from goats supplemented with the association of cladodes cactus and cottonseed presented superior nutritional qualities when compared to goats supplemented with coconut by-product.

COMMITTEE MEMBERS:
Interno - FRANCISCO FERNANDO RAMOS DE CARVALHO
Externo à Instituição - ARIOSVALDO NUNES DE MEDEIROS - UFPB
Externo à Instituição - CÁRMEN MARIA LUCAS PEDRO GARRINE BULE
Externo à Instituição - DORGIVAL MORAIS DE LIMA JUNIOR - UFERSA
Externa à Instituição - SUSANA PAULA ALMEIDA ALVES - FMV