Performance of lactating goats fed diets containing inactive dry yeast

AUTOR(ES)

Gomes, Ludmila Couto, Alcalde, Claudete Regina, Macedo, Francisco de Assis Fonseca de, Santos, Geraldo Tadeu dos, Valloto, Altair Antônio, Lima, Luciano Soares de, Molina, Bruna Susan de Labio

FONTE

R. Bras. Zootec.

DATA DE PUBLICAÇÃO

2012-10

RESUMO

Twenty-four Saanen goats (15 multiparous and 9 primiparous) from 21 days prepartum to 200 days in lactation were used to evaluate milk yield and composition. Animals were randomly distributed in a 3 × 2 factorial arrangement (3 diets × 2 parity orders) and fed a 40:60 forage:concentrate diet composed of soybean meal, soybean meal + dry yeast or dry yeast as protein source, plus ground corn, mineral supplement and corn silage. The protein source did not influence the body weight of pre and postpartum goats. Prepartum, postpartum and postpeak dry matter intake (DMI) were not altered by diets. However, goats fed the diet containing dry yeast as protein source had lower DMI in late lactation. Milk yield and feed efficiency were not affected by diets. Milk components, acidity and somatic cell count were not influenced by diets during all lactation phases. However, fat and total solid contents postpartum were higher for primiparous goats and somatic cell count postpeak was lower for multiparous goats. Dry yeast can be used to replace soybean meal in diets for lactating Saanen goats.

Documentos Relacionados

• Nutritive value of diets containing inactive dry yeast for lactating Saanen goats
• Performance of dairy goats fed diets with dry yeast from sugar cane as protein source
• Growth performance of native goats fed diets containing different levels of energy
• Performance of layers fed diets containing different oils
• Performance of broilers fed diets containing natural growth promoters