title: Effects of oils on feed mildew and quality.
abstract: This study was performed to determine the effects of oils on feed mildew and feed quality. Under different moisture content conditions (10%, 13% and 16%), the basal feeds were supplemented with 4%, 6%, 8%, 10% and 12% soybean oil. In addition, at different moisture content levels (10%, 13% and 16%), the basal feed was supplemented with 12% of various types of oil (soybean, peanut, corn and fish). Subsequently, a mixed mold spore suspension was added. The feed samples were incubated at 28°C, and the total mold, water activity (Aw), moisture, acid value, crude protein (CP), crude lipid (CL), crude ash (CA) and nitrogen-free extract (NFE) levels were determined at 15, 30, 45 and 60 days. The results showed no significant variations in the feed moisture, CP, CL, CA and NEF contents. However, the acid value gradually increased in the feed samples with an extended incubation time and increasing initial moisture. The feed moisture content was a critical factor controlling feed mildew, and high levels of oil supplementation caused an elevated Aw. Additionally, peanut oil promoted mold growth in feed. These results provide a reference for the production and scientific management of formulated feed.
authors.affiliation: Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Liu
authors.affiliation: Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Qi
authors.affiliation: Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China.
authors.forename: Yakuan
authors.initials: Y
authors.lastname: Huang
authors.affiliation: Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China.
authors.forename: Jiao
authors.initials: J
authors.lastname: Guo
authors.affiliation: Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China.
authors.forename: Jiacai
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China.
authors.forename: Chong
authors.initials: C
authors.lastname: Li
authors.affiliation: Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China.
authors.forename: Niya
authors.initials: N
authors.lastname: Zhang
authors.affiliation: Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China.
authors.forename: Lvhui
authors.initials: L
authors.lastname: Sun
authors.affiliation: Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China.
authors.forename: Desheng
authors.initials: D
authors.lastname: Qi
mesh_terms: D000821:Animal Feed / Q000032:analysis* / Q000382:microbiology*; D004041:Dietary Fats / Q000032:analysis; D004044:Dietary Proteins / Q000032:analysis; D005506:Food Contamination / Q000032:analysis*; D063427:Food Quality; D005658:Fungi / Q000254:growth & development* / Q000302:isolation & purification; D010938:Plant Oils; D014867:Water / Q000032:analysis
chemical_list: D004041:Dietary Fats; D004044:Dietary Proteins; D010938:Plant Oils; D014867:Water
keywords: feed mildew; feed quality; oil