Data/hora: 02/06/2024 13:29:29

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 14/09/1995
Data da última atualização: | 14/09/1995
Autoria: | FOLEY, J. A.; OTTERBY, D. E.
Título: | Availability, storage, treatment, composition, and feeding value of surplus colostrum: a review.
Ano de publicação: | 1978
Fonte/Imprenta: | Journal of Dairy Science, v.61, n.8, p.1033-1060, 1978.
Idioma: | Inglês

Conteúdo:

Bovine colostrum imparts passive immunity to newborn calves during the first 24 h of life
and generally has been fed for the first 3 days after birth. Surplus colostrum is unmarketa-
ble and available in quantities sufficient to feed heifer calves through 28 to 35 days of
age. Colostrum can be preserved conveniently for future use by brief refrigeration, freezing
or storage at ambient temperatures (fermentation or chemical treatment). Freezing results
in virtually no loss of nutrients during storage but requires a freezer, extra handling, and 
daily thawing of required colostrum. Storage via fermentation or chemical treatment results in changes in physical characteristics, unavoidable nutrient losses, and occasional accep-
tability problems but is convenient and economical. Chemical preservatives are recomen-
ded for storage at warm temperatures. During storage at ambient temperatures, pH decre-
ases as acidity increases, and total solidfs, protein, fat, and lactose contents of colostrum
decrease. Total microbial numbers increase rapidly with initiation of fermentation, then le-
vel off or decline. Mold and yeast numbers continue to rise throughout storage. Some 
chemical additives are effective in stopping coliform growth or limiting mold and yeast 
growth. Colostrum can repalce more than an equal weight of whole milk in calf-feeding 
programs due to its higher solids content. When colostrum is fed on an equal solids basis
with whole milk, differences in calf performance are minimal. Colostrum generally does not
cause scouring problems in calves. Maximal use of colostrum in calf-feeding prograns is 
recommended.

Palavras-Chave: | Composicao; Composition; Feeding value; Surplus colostrum; Treatment.
Thesagro: | Bezerro; Tratamento; Valor Nutritivo.
Thesaurus Nal: | calves.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (29733-1) - ADD - SP - -- - SP1191 -  - 1191 - DIS