Peanut skins as a feed ingredient for lactating dairy cows

Twenty lactating Jersey cows were offered a TMR containing 0, 8, 16, or 24% peanut skins (testa) to determine the effect of peanut skins and their tannin component on cow performance. Increased percentage of peanut skins in the diet increased DMI and milk and FCM yields quadratically and increased b...

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Bibliographic Details
Published in:Journal of dairy science 1993-02, Vol.76 (2), p.590-599
Main Authors: West, J. W, Hill, G. M, Utley, P. R
Format: Article
Language:English
Subjects:
arachide
Biological and medical sciences
byproducts
cacahuete
chemical composition
composicion quimica
composition chimique
dairy cows
digestibilidad
digestibilite
digestibility
feed intake
Food industries
Fundamental and applied biological sciences. Psychology
groundnuts
ingestion de pienso
lactacion
lactation
lait
leche
milk
Milk and cheese industries. Ice creams
milk yield
prise alimentaire animaux
proteinas
proteine
proteins
rendement laitier
rendimiento lechero
sous produit
subproductos
taninos
tannin
tannins
testa
vacas lecheras
vache laitiere
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Summary:Twenty lactating Jersey cows were offered a TMR containing 0, 8, 16, or 24% peanut skins (testa) to determine the effect of peanut skins and their tannin component on cow performance. Increased percentage of peanut skins in the diet increased DMI and milk and FCM yields quadratically and increased both milk and FCM per DMI linearly. Cows offered the 8% peanut skin diet had the highest DMI, but milk and FCM yields were highest for cows fed the 8 and 16% peanut skin diets. Milk yield was lower for cows fed the 24% versus 8 and 16% peanut skin diets but was greater than controls. Milk fat percentage improved quadratically, but milk protein percentage declined linearly as peanut skin content of the diet increased. Ruminal NH3 declined linearly as dietary peanut skin content increased. Digestibility of CP, serum urea N, and urinary N to creatinine ratio also declined linearly with increasing dietary peanut skins, indicating that indigestible tannin-protein complexes were formed that reduced protein availability. Peanut skins can be used in diets for lactating cows; however, based on effects on protein metabolism, they should be limited to about 16% of the diet, and diets should exceed the recommended minimum CP content.
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.S0022-0302(93)77379-8