Data/hora: 14/06/2024 17:49:53

Provedor de dados: | 86
País: | Brazil
Título: | Metabolic and hormone profiles of Holstein x Gyr cows during pre- and postpartum
Autores: | Franzoni,Ana Paula Saldanha; Gloria,Joana Ribeiro da; Costa,Anna Luiza Belli de Souza Alves; Martins,Ronaldo Alves; Amaral,Thiago Fernandes; Azevedo,Rafael Alves de; Campos,Ernane Ferreira; Coelho,Sandra Gesteira.
Data: | 2018-03-01
Ano: | 2018
Palavras-chave: | Bos indicus; Bos taurus; GH; IGF-1; Lactation curve; Transition period.
Resumo: | Abstract: The objective of this work was to describe the effect of genetic composition on body condition score (BCS), on total lactation production, and on metabolic and hormone profiles of Holstein x Gyr cows under the same pre- and postpartum management conditions. The genetic groups ½ (n=8), – (n=10), and ≥⅞ (n=10) Holstein x Gyr (HG) were evaluated within the same farm, and all of them showed typical lactation curves. The time required to reach peak production did not differ between groups. The groups also did not differ as to time to reach the lowest BCS after calving or to recover BCS after calving, nor as to their BCS values in the week of first ovulation, number of weeks required for first ovulation, and service period. However, ½ HG cows had higher BCS at calving, but also greater BCS loss postpartum. Total lactation production and plasma insulin concentrations of – HG cows postpartum were similar to those of cows specifically selected for milk production. Using parameters obtained with Holstein cows to determine management conditions in farms with crossbred cows can have unwanted consequences, since these animals have different metabolic and hormone profiles.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000300371

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/s0100-204x2018000300012
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.53 n.3 2018
Fonte: | info:eu-repo/semantics/openAccess