Banca de DEFESA: GABRIELA RAYANE DA ROCHA COSTA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : GABRIELA RAYANE DA ROCHA COSTA
DATE: 26/07/2024
TIME: 08:00
LOCAL: Sala de Seminários da Pós Graduação
TITLE:

Supplemental sodium chloride on the regulation of water balance in beef sheep fed diets based on prickly pear forage

KEY WORDS:

Lambs, kidney function, water intake, mineral, semiarid

PAGES: 50
BIG AREA: Ciências Agrárias
AREA: Zootecnia
SUBÁREA: Nutrição e Alimentação Animal
SPECIALTY: Avaliação de Alimentos para Animais
SUMMARY:

The study evaluated the effect of sodium chloride supplementation on the regulation of water balance in sheep fed a diet based on forage cactus. Forty uncastrated male eggs with an average initial weight of 21.6 ± 2.04 kg were used for 60 days, with 15 days of adaptation and 45 days for data collection. The experimental diet included forage cactus, Tifton hay, corn, soybean meal, mineral salt, livestock urea and ammonium sulfate. The treatments consisted of supplemental doses of sodium chloride (0.00, 3.51, 7.00 and 10.45 g/kg of dry matter). Samples of the food offered, leftovers, feces, urine and blood were listed, in addition to quantifying water consumption. The inclusion of different levels of nutrients in the diet did not affect the water balance of the animals or the excretion of urinary metabolites (P> 0.05). Among the blood metabolites analyzed, only albumin and triglyceride concentrations showed significant effects (P<0.05), with negative linear and quadratic effects, with a minimum point starting from the inclusion of 3.1 g/kg of sodium, respectively. However, sodium supplementation in the diet had a significant impact (P<0.05) on the hydroelectrolytic regulation of the animals, linearly increasing the urinary concentrations of sodium and chloride, followed by a significant increase (P<0.05) in the urinary excretion of these metabolites, indicating that there was excretion of electrolyte excesses. The mineral balance of sodium, potassium and phosphorus was significantly influenced (P<0.05) by the inclusion of sodium, demonstrating a quadratic effect, indicating an improvement in the balance, retention and absorption of sodium and potassium when approximately 3.635 g of Na/kg DM were included in the diet. proving to be more efficient from the point of view of mineral utilization and absorption when the diets presented a K:Na ratio of 4.78:1 and 4.62:1, when we consider K:Na as a function of fluid retention in relation to the amount ingested and absorbed, respectively. Therefore, the inclusion of 3,635 g of Na/kg DM in palm-based diets is indicated to improve mineral utilization without affecting the renal function of the animals.

COMMITTEE MEMBERS:
Presidente - JOAO PAULO ISMERIO DOS SANTOS MONNERAT
Interno - MARCELO DE ANDRADE FERREIRA
Externa à Instituição - KELLY CRISTINA DOS SANTOS - UFRPE