Data/hora: 08/06/2024 14:38:39

Biblioteca(s): | Embrapa Cerrados; Embrapa Gado de Corte.
Data corrente: | 25/11/1999
Data da última atualização: | 25/11/1999
Autoria: | SAUERESSIG, M. G.
Título: | Aspects of nutrition and endocrine activity in Bos indicus cattle.
Ano de publicação: | 1980
Fonte/Imprenta: | Queensland: James Cook University of North Queensland, 1980.
Páginas: | 135p.
Idioma: | Inglês
Notas: | Master of Science.
Conteúdo: | Changes in basal luteinising hormone (LH) concentrations and the LH response to gonadotrophin releasing hormone (BnRH) were examined in two groups of ovarietomised  Bos indicus cross cows fed experimental periods each of three weeks. Ovariectomy significantly increasaed mean (+ -SE) plasma LH concentrations from 4.89 +- 0.15 ng/ml prior to surgery to 7.32 +- 0.22 ng/ml during a 10 week pre-experimental period post-ovariectomy. Individual animal variations and animal x ovariectomy interactions significantly affect post-ovariectomy LH concentrations.  During nutritional treatmente periods one and two when group I cows were on the H treatment and group II cows on the L followed by the H treatment, mean basal plasma LH concentrations (ng/ml) were 10.18 +-0,74 and 10,58 +-1.07 for group I cows I cows and 7.51 +- 0.88 and 8.83 +- 0,65 for group II cows. In periods three and four when group I cows were on the L followed by the H treatment and group II cows on the H treatment in both periods, mean basal plasma Lh concentrations (ng/ml) were 4.55 +- 0,59 and 4.31 +- 0.49 for group I cows and 3.90 +- 0.61 and 4.44 +- 0.83 for group II cows. Plane of nutrition had no significant effect on basal plasma LH concentrations, but there were significant differences between  periods in mean basal plasma LH concentrations. Following ...
Palavras-Chave: | Bovinos; Zebu cattle.
Thesagro: | Bovino; Gado Zebu; Nutrição Animal.
Thesaurus Nal: | animal nutrition; Bovidae; cattle.
Categoria do assunto: | --
Registro original: | Embrapa Cerrados (CPAC)

Exemplares:

CNPGC - (7053-1) - ADD - TS - PP - T257/80 - SAU - T257/80 - DIS
CPAC - (20112-1) - ADD - TS - -- - T011/80 - SAU - T011/80 - DIS