Banca de QUALIFICAÇÃO: JOSÉ LYPSON PINTO SIMÕES IZIDRO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : JOSÉ LYPSON PINTO SIMÕES IZIDRO
DATE: 02/09/2022
TIME: 14:00
LOCAL: Google meet
TITLE:

Productive characteristics and performance of cattle in a Silvipastoral System in the Agreste region of Pernambuco

KEY WORDS:

silvopastoral system

southern wild

Production system

Pasture

PAGES: 90
BIG AREA: Ciências Agrárias
AREA: Zootecnia
SUBÁREA: Pastagem e Forragicultura
SPECIALTY: Avaliação, Produção e Conservação de Forragens
SUMMARY:

The objective of this project is to evaluate the production and chemical composition of different forage species and the performance of cattle growing under the Silvipastoral System (SSP) of Mimosa caesapiniifolia Benth. (thrush) and Brachiaria decumbens Stapf. (brachiaria) in the Agreste region of Pernambuco. The field experiment will comprise two years of evaluation, starting in January 2020, with the collection of data from forage plants and, later, in August/2020, with the introduction of animals in the plots and beginning of performance evaluations, which will be carried out for a period of two years. The experiment was established in 2017 at the Experimental Farm of UFRPE, which has already been grazed for a year. The experimental design is in randomized blocks, with three treatments (SSP with braquiária x sabiá, monoculture of braquiaria and monoculture of Sabiá) and three replications. In the intercropped treatment, the trees were established in the Brachiaria pastures in double rows, spaced 25.0 x 2.0 x 1.0 m. The plots that constitute the consortium and the brachiaria in monoculture correspond to an area of 1 ha, while the thrush forests consist of areas of 30 x 20 m, following the same spacing adopted in the double rows in the consortium plots. Thus, the total experimental area will comprise approximately 6.18 ha. In the intercropped treatment and in the monoculture Brachiaria, grazing of growing cattle will occur, in order to evaluate the responses of plants and animals. Tree growth will be monitored through the total height of the plants; shaft height; number of shafts; cup diameter; diameter at breast height (DBH) and diameter at the base, and these evaluations were carried out every 56 days for 24 months. Chemical and physical aspects of the soil will be evaluated, as well as, with the exception of forests, mass, accumulation and rate of forage accumulation, forage supply, stocking rate, average daily weight gain, weight gain per area, forage consumption, through the external marker enriched and purified lignin (LIPE®), in addition to the nutritional value (chemical-bromatological composition and in vitro digestibility of dry matter) of brachiaria, every 56 days. In the grass will be evaluated the contents of dry matter (DM), mineral matter (MM), crude protein (CP), neutral detergent fiber (NDF). In sabiá, the concentrations of N, P, K, Ca and Mg and C of the leaves and branches of the trees will be estimated, in addition to their total aerial biomass and by part of the plants (leaves and branches). Two test animals will be used per paddock, totaling 12 animals, in addition to the adjustment animals, in order to maintain a forage supply of 3.0 kg of green DM for each 100 kg of animal live weight. The data will be submitted to analysis of variance and the means compared by the Tukey test, at 5% probability. With the execution of this project, it is expected to obtain information about the adaptation of species in consortium and the potential of economic exploitation in Brachiaria pastures in monoculture, in SSP and in monocultures of sabiá, aiming at future recommendations of production systems for the region. of the southern agreste of Pernambuco.

BANKING MEMBERS:
Presidente - 2346742 - ALEXANDRE CARNEIRO LEAO DE MELLO
Interna - 1310722 - ADRIANA GUIM
Interno - 3514546 - MARCIO VIEIRA DA CUNHA
Interno - ***.517.214-** - JOSE CARLOS BATISTA DUBEUX JUNIOR - UFRPE
Externa à Instituição - VALÉRIA XAVIER DE OLIVEIRA APOLINÁRIO