Banca de DEFESA: ANA CARLA CHAVES DIAS

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : ANA CARLA CHAVES DIAS
DATE: 30/08/2021
TIME: 14:00
LOCAL: INSTITUTO DE ZOOTECNIA
TITLE:

Use of Creep-Feeding and Dietary Additives in Equine and Mules Foals

KEY WORDS:

Prebiotic, Fructooligosaccharides, Mangalarga Marchador, Microbiome.

PAGES: 149
BIG AREA: Ciências Agrárias
AREA: Zootecnia
SUMMARY:

DIAS, Ana Carla Chaves. Use of Creep-Feeding and Dietary Additives in Equine and Mules Foals. 2021. 132p. Thesis (Doctor Science in Animal Science). Animal Science Institute, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, 2021. The aim of this work was to evaluate the growth of lactating equine foals and mules in the initial period of breastfeeding, to characterize the bacterial colonization of equine and mule foals, as well as the fecal fermentative parameters at 30, 60 and 90 days of age and highlight the main differences between the species and their parent mares, in addition, to characterize the fecal bacterial groups, fermentation capacity and in vitro nutrient degradation of foals before and after 15 days of consumption of the fructooligosaccharide additive (FOS) in a creep-feeding system in equine and mule foals , as well as compare with the observed results of their respective mothers. Equine foals and mule foals were used, in a completely randomized design, where treatments varied between equine foals and mule foals and prebiotic supplementation in the creep-feeding system, and the animals were replicates. The experimental period lasted 12 weeks in the first phase and 15 days of supplementation in the second phase. The performance of the foals was evaluated through live weight, linear measurements of height at the withers, height at the rump, height of the side and body length, and the perimeters of the chest, forearm, knee and shin. Bacteriological characterization was performed by a culture-dependent method, by counting colonies for Lactobacillus and Streptococci species, and by most probable number for total anaerobic bacteria and cellulolytic bacteria. And the fermentative parameters evaluated according to the in vitro gas production technique adapted from Theodorou et al. The results were submitted to analysis of variance in a split-plot and/or 2x2 factorial scheme, and the means were compared by Tukey's test at 5% probability. There were no differences (P>0.05) between species and interaction between species versus age in the variables live weight (PV), average daily weight gain (GMPD), height at the withers (AC), height at the rump (AG) , side height (ACos), thoracic perimeter (PT), forearm perimeter (PA) and shin perimeter (CP). However, there was an effect of age on the aforementioned variables (P<0.05). There was a difference (P<0.05) in body length (CC) between equine and mule species, while in knee perimeter measurements (PJ) effects of age and age versus species interaction were observed. Equine and mule foals raised in the same environment show a similar pattern in terms of bacterial colonization, with Lactobacillus, Streptococci and Cellulolytic Bacteria established at 7 days of age. Equine and mule foals showed the same fermentation pattern from birth to 90 days of age. The production of gases is similar to the adult animal after 30 days of age, as well as the degradation of neutral detergent fiber. The use of FOS prebiotic in creep-feeding system for 15 days of consumption at a dosage of 0.07g/kg body weight for equine and mule foals did not influence the concentration of Lactobaccilus, total anaerobic and cellulolytic bacteria. There was no significant change in the total volume of gas production, but there was a difference in nutrient degradation.

BANKING MEMBERS:
Externa à Instituição - RAQUEL SILVA DE MOURA - UFLA
Externa à Instituição - CHIARA ALBANO DE ARAÚJO OLIVEIRA - UFBA
Presidente - 387015 - FERNANDO QUEIROZ DE ALMEIDA
Externo à Instituição - HÉLIO CORDEIRO MANSO FILHO - UFRPE
Externa ao Programa - 1815763 - IRENE DA SILVA COELHO