Banca de DEFESA: FELIPE GUSMÃO DE SOUZA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : FELIPE GUSMÃO DE SOUZA
DATE: 28/02/2024
TIME: 08:30
LOCAL: Departamento de Zootecnia/Google Meet
TITLE:

Replacement of conventional concentrate with refinazil in the diet of lactating cows

KEY WORDS:

Agreste of Pernambuco, Dairy cattle farming, Cow performance, Net lactation 53 energy, Ruminant nutrition, Brazilian semi-arid region.

PAGES: 37
BIG AREA: Ciências Agrárias
AREA: Zootecnia
SUBÁREA: Nutrição e Alimentação Animal
SPECIALTY: Avaliação de Alimentos para Animais
SUMMARY:

The objective was to evaluate the predictions of replacing a concentrate based on soybean bran, 34 wheat bran and corn (conventional concentrate) with corn gluten bran-21 (Refinazil) in cactus35 based diets for lactating cows. The experiment was carried out at the experimental station of 36 the Empresa Pernambucana de Pesquisa Agropecuária (IPA), located in the city of São Bento 37 do Una - PE. Eight Holstein cows with an average body weight of 503 ± 31.4 kg were used, 38 with an average production of 17.3 ± 2.3 kg of milk/day and 90 days in lactation. The animals 39 were distributed in two 4x4 Latin squares, consisting of four animals, four periods and four 40 treatments each. Each experimental period lasted 21 days (14 days for animal adaptation, seven 41 days for data and sample collection). The consumption of dry matter, organic matter and neutral 42 detergent fiber had a quadratic behavior, as did the production of microbial protein. The 43 consumption of ether extract and non-fibrous carbohydrates and the production of total and 44 corrected milk decreased linearly with the substitution. The consumption of crude protein and 45 digestible nutrients, the efficiency of microbial protein production synthesis and the 46 digestibility of nutrients were not influenced by replacement. Crude protein and lactose contents 47 had a quadratic behavior with maximum concentrations of 3.23 and 4.87% with 41.37 and 48 40.96% replacement. The fat and total solids contents were not altered by substitutions. It is not 49 recommended to replace conventional concentrate, based on corn, soybean bran and wheat bran 50 (24% CP) with Refinazil in diets for cows with an average production of 20 kg of milk/day.

COMMITTEE MEMBERS:
Presidente - MARCELO DE ANDRADE FERREIRA
Externa ao Programa - 2234529 - LUCIANA FELIZARDO PEREIRA SOARES - UFRPEExterna à Instituição - MARIA GABRIELA DA CONCEICAO - UFCA