Data/hora: 27/07/2024 01:49:11

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	13/09/1995	
Data da última atualização: 	27/09/2013	
Autoria: 	McCULLOUGH, M. E.	
Título: 	A study of techniques for measuring differences in forage quality dairy cows.	
Ano de publicação: 	1958	
Fonte/Imprenta: 	Technical Bulletin Georgia Agricultural Experiment Station, n.4, p.1-22, 1958.	
Idioma: 	Inglês	
Conteúdo: 	Data from 60 intake, digestibility, grazing behavior and persistency of milk production observations on four typical Georgia pastures have been used to compare the value of various techniques in evaluating pasture changes. Within the data the following observations seem valid:
(1) Time spent grazing was unrelated to forage intake and milk production. 
(2) Time spent ruminating was determined partially by dry matter intake and digestibility but
was also influenced by forage species and the individual cow.
(3) Forage intake was influenced significantly by level of milk production and by dry matter digestibility.
(4) The correlation between dry matter digestibility and persistency of milk production when expressed as a second degree polynomial was .865. Changes in dry matter digestibility apparently reflect changes not only in nutrient availability but also changes in dry matter intake and ration balance.
(5) The techniques employed in this study did not adequately measure all factors affecting
animal production on pasture forage. Until techniques are available for measuring all important factors, greater progress should be made with within-forage evaluation than from between-forage studies.	
Palavras-Chave: 	Dairy cow; Gado de leite; Producao de leite.	
Thesagro: 	Digestibilidade; Forragem.	
Thesaurus Nal: 	digestibility; forage; milk production.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (29692-1) - ADD - SP - -- - SP1167 -  - 1167 - DIS