Consulta: subjectFacets:"Calving interval"
Registros recuperados: 4
Data/hora: 11/06/2024 04:14:31

Noventa dias vitais de uma vaca leiteira.
Provedor de dados: 14
Autores: CAVALCANTE, F. A.; CARNEIRO JUNIOR, J. M.
As vacas representam a unidade produtiva em um rebanho leiteiro em qualquer nível de tecnologia, pois contribuem diretamente com a renda do produtor. O desempenho das vacas apresenta grande importância econômica e tem relação direta com o manejo nutricional, controle reprodutivo e sanitário do rebanho.
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Intervalo entre partos en ganado bovino.; Cruce de animales; Elaboración de leche; Ganado de leche; Gado de leite; Reprodução animal; Produção leiteira; Lactação; Intervalo de parto.; Dairy cattle; Animal breeding; Milk production; Calving interval; Lactation.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1068947

Intervalo entre partos em búfalas no Trópico Úmido brasileiro.
Provedor de dados: 14
Autores: MARQUES, J. R. F.; BATISTA, H. A. M.; NASCIMENTO, C. N. B. do; LOURENÇO JUNIOR, J. de B.; CARVALHO, L. O. D. de M.; COSTA, N. A. da; ANDRADE, V. J.; PIMENTEL, E. S.
bitstream/item/31942/1/CPATU-BP73.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Bubalino; Mestico; Buffalo; Management; Crossbreed; Fertility.; Criação; Eficiência Reprodutiva; Fertilidade; Manejo.; Calving interval; Reproduction.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/380970

Inbreeding depression in Holstein cattle in Brazil
Provedor de dados: 96
Autores: Silva,Mário Henrique Magalhães Araújo da; Malhado,Carlos Henrique Mendes; Kern,Elisandra Lurdes; Daltro,Darlene dos Santos; Cobuci,Jaime Araujo; Carneiro,Paulo Luiz Souza.
ABSTRACT The objective of this study was to evaluate inbreeding depression in Holstein cows in Brazil, considering their 305-day milk production (MP), age of first calving (AFC), and calving interval (CI). The effects of inbreeding depression on the traits were determined using four regression models (linear, quadratic, exponential, and Michaelis-Menten) about the errors generated by the animal model. The linear model was significant for CI, and the quadratic model was significant for CI and AFC. The Michaelis-Menten and exponential models were significant for MP, AFC, and CI. Inbreeding depression affected MP and CI. Cows with inbreeding coefficient of 15% produced approximately 260 kg less milk than non-inbred cows. A 1% increase in the inbreeding level...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calving interval; Inbreeding coefficient; Linear models; Non-linear models.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100307

Maternal inheritance on reproductive traits in Brangus-Ibagé cattle
Provedor de dados: 65
Autores: Henkes,Luis Ernani; Benavides,Magda Vieira; Oliveira,João Francisco Coelho; Moraes,José Carlos Ferrugem; Weimer,Tania Azevedo.
Cytoplasmic inheritance influence on reproductive traits was investigated in the Brangus-Ibagé cattle (3/8 Nelore x 5/8 Aberdeen Angus). Additive genetic effects were responsible for 12% ± 11% of phenotypic variation observed in first calving interval, but their contribution dropped to zero when all calving intervals (CI) were considered. The heritability estimate for age at first calving (AFC, in days) was 0.19 ± 0.09. Mitochondrial lineage (MIT) had negligible effects on phenotypic variances of calving interval (0.0 ± 0.02), calf birth weight (0.0 ± 0.01), and cow weight at calving (0.0 ± 0.01). However, for the age at first calving, MIT accounted for 0.15 ± 0.07 of total variation. Cow weight at calving had a significant linear effect on CI and AFC....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MtDNA; Maternal inheritance; Calving interval.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000400030