Caracterização da distocia em um rebanho de vacas da raça Holandesa no Brasil

Autores

DOI:

https://doi.org/10.1590/1809-6891v23e-72508E

Resumo

O objetivo deste estudo foi caracterizar os partos com leve ou severa dificuldade e diferenciá-los com base no desempenho produtivo e reprodutivo de vacas leiteiras. Os partos foram agrupados em partos sem assistência, partos com baixa assistência e partos com elevada assistência. O banco de dados original continha 1902 registro de partos que foram obtidos de uma grande fazenda comercial localizada no Sudeste do Brasil. A análise fatorial foi aplicada através do programa estatístico SAS® Studio 3.8 por meio de procedimento fatorial, considerando a categoria de análise multivariada. Os teores de gordura do leite (0,92– 0,79) e de sólidos totais (0,91–0,80) foram altamente correlacionados com o fator 1. Intervalo entre partos (0,87–0,68) e número de IA (inseminações artificiais) por concepção (0,87–0,71) apresentaram alta correlação com o fator 2. Produção de leite (0,84–0,76) e produção acumulada de leite (0,84–0,77) foram altamente correlacionados com o fator 3. Baseados nos resultados, é possível concluir que as três situações de parto foram caracterizadas por fatores independentes e bem definidos. Vacas que necessitaram de alta assistência ao parto apresentaram menor variância explicada pelo modelo para teores de gordura e sólidos totais do leite, intervalo entre partos e número de IA por concepção.
Palavras-chave: assistência ao parto; análise multivariada; manejo do parto; produção de leite

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Publicado

2022-08-08

Como Citar

LOURENÇO, J. C.; OSSANI, P. C.; SALLES, M. S. V.; BÁNKUTI , F. I.; ALMEIDA , R. de; ROSSONI, D. F.; OSORIO, J. A. C. de; SANTOS, G. T. dos. Caracterização da distocia em um rebanho de vacas da raça Holandesa no Brasil . Ciência Animal Brasileira / Brazilian Animal Science, Goiânia, v. 23, 2022. DOI: 10.1590/1809-6891v23e-72508E. Disponível em: https://revistas.ufg.br/vet/article/view/72508. Acesso em: 17 dez. 2024.

Edição

Seção

MEDICINA VETERINÁRIA