title: Nutritional values and antioxidative activities of whole peanuts and peanut skins for ruminant feeds.
abstract: This study was conducted to investigate the nutritive values of two peanut by-products, nonstandardized whole peanuts and peanut skins, along with their effects on microbial growth and fermentation in the rumen, their roughage values, and their antioxidative activities by a digestion trial using four goats. The experimental rations were alfalfa haycube (basal ration), 85% alfalfa with 15% whole peanuts, and 70% alfalfa with 15% whole peanuts and 15% peanut skins. The ether extracts and crude protein in whole peanuts were 47% and 27% on a dry matter basis (DM) both with over 90% of digestibilities, resulting in total digestive nutrients (TDN) of 140%. Peanut skins also had a high energy value with 91% of TDN. Ruminal concentrations of total volatile fatty acids (VFA) and acetic acid decreased in the rations containing the peanut by-products, but the NDF digestibility and ruminal microbial protein estimated from urinary purines was not altered by feeding the peanut by-products. Plasma oxidative stress maker, malondialdehyde, tended to be lower when peanut skins were supplemented. Whole peanuts and peanut skins could be used as high-energy and high-protein diets for ruminants, and peanut skins would be expected as a feed having antioxidant functions.
authors.affiliation: Department of Animal Science and Resources, Nihon University, Fujisawa, Japan.
authors.forename: Chihiro
authors.initials: C
authors.lastname: Saito
authors.affiliation: Department of Animal Science and Resources, Nihon University, Fujisawa, Japan.
authors.forename: Sanae
authors.initials: S
authors.lastname: Asano
authors.affiliation: Department of Animal Science and Resources, Nihon University, Fujisawa, Japan.
authors.forename: Chizuko
authors.initials: C
authors.lastname: Kato
authors.affiliation: Department of Animal Science and Resources, Nihon University, Fujisawa, Japan.
authors.forename: Shintaro
authors.initials: S
authors.lastname: Kobayashi
authors.affiliation: Department of Animal Science and Resources, Nihon University, Fujisawa, Japan.
authors.forename: Ayaka
authors.initials: A
authors.lastname: Musha
authors.affiliation: Department of Animal Science and Resources, Nihon University, Fujisawa, Japan.
authors.forename: Hirotaka
authors.initials: H
authors.lastname: Kuribayashi
authors.affiliation: Department of Animal Science and Resources, Nihon University, Fujisawa, Japan.
authors.forename: Shouhei
authors.initials: S
authors.lastname: Moriguchi
authors.affiliation: Department of Animal Science and Resources, Nihon University, Fujisawa, Japan.
authors.forename: Yuuki
authors.initials: Y
authors.lastname: Seto
authors.affiliation: Department of Animal Science and Resources, Nihon University, Fujisawa, Japan.
authors.forename: Tasuku
authors.initials: T
authors.lastname: Kawashima
authors.affiliation: Chiba Prefectural Livestock Research Center, Yachimata, Japan.
authors.forename: Masakazu
authors.initials: M
authors.lastname: Kobayashi
authors.affiliation: Chiba Prefectural Livestock Research Center, Yachimata, Japan.
authors.forename: Shigenobu
authors.initials: S
authors.lastname: Ishizaki
authors.affiliation: Department of Animal Science and Resources, Nihon University, Fujisawa, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kajikawa
mesh_terms: D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena / Q000502:physiology*; D000818:Animals; D000975:Antioxidants / Q000378:metabolism*; D010367:Arachis; D004063:Digestion; D005285:Fermentation; D006041:Goats; D009753:Nutritive Value; D018384:Oxidative Stress; D012417:Rumen / Q000378:metabolism / Q000382:microbiology* / Q000502:physiology*
chemical_list: D000975:Antioxidants
keywords: antioxidant; digestion; peanut skin; rumen fermentation; whole peanuts