Data/hora: 11/06/2024 09:38:06

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 25/03/1999
Data da última atualização: | 25/03/1999
Autoria: | LITTLEJOHN, A. I.; LEWIS, G.
Afiliação: | Central Veterinary Laboratory, Weybridge.
Título: | (1) Experimental studies of the relationship between the calcium-phosphorus ratio of the diet and fertility in heifers: a preliminary report.
Ano de publicação: | 1960
Fonte/Imprenta: | The Veterinary Record, v.72, n.50, p.1137-1144, Dec. 1960.
Idioma: | Inglês
Conteúdo: | Large-scale controlled experiments carried out a Weybridge in 1958 and 1959 have failed to demonstrate any significant relationship between the Ca:P ratio of the diet and fertility in dairy heifers, whether the level of herd fertility was high or low. The occurrence of "silent" but fertile heats in some of the younger heifers is recorded. A high Ca:P ratio depressed growth rate. There was no relationship between the level of liver copper and either fertility or the intensity of oestrus. A high intake of phosphorus depressed serum calcium even where the intake of calcium was also high.
Palavras-Chave: | Diets; Estudo experimental; Experimental studies; Fertility; Novilha.
Thesagro: | Cálcio; Dieta; Fertilidade; Fósforo.
Thesaurus Nal: | calcium; heifers; phosphorus.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (37742-1) - ADD - SP - -- - SP4335 -  - 4335 - DIS