SỰ BIẾN ĐỔI MỘT SỐ CHỈ TIÊU VI SINH VẬT KHI SỬ DỤNG CHẾ PHẨM COSTE – MT01 TRONG MỘT SỐ TRANG TRẠI CHĂN NUÔI BÒ SỮA HUYỆN DUY TIÊN, TỈNH HÀ NAM

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Tác giả: Mạnh Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học Tài nguyên và Môi trường, 2020

Mô tả vật lý: tr.86

Bộ sưu tập: Metadata

ID: 300849

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In dairy farming, along with the increase in the number of cows, the risk of odors and harmful microorganisms discharged into the soil, water, and air environment from livestock is increasingly higher if there is no appropriate treatment.The use of microbiological inoculants COSTE-MT01 aims to minimize the odor generation and density of some types of unuseful microorganisms generated from breeding process. The COSTE-MT01 inoculant was used on 5 concentrated-breeding dairy farms with the number of cows greater than 30 to study the changes of some microbiological indicators after using inoculants. The results showed that: Before using inoculants, E.coli ranged from 101-6x101 CFU/m3, Coliform 25-4.5x102 CFU/m3, mold 30-6.5x103 CFU/m3. After 3 hours using inoculant, the E.coli content was 1-2 CFU/m3 of air, the Coliform density was 102 CFU/m3, the mold density decreased to 3.5x102 CFU/m3. The density of Coliform, E.coli and mold also decreased in the area surrounding dairy farms. In addition, the efficiency of gas treatment in the barn was alsp significantly improved after 30 days of inoculant use. Concentrations of CH4, H2S, NH3 decreased within the allowable limits of QCVN 06: 2009 / BTNMT. CO2 increased slightly. The efficiency of treating CH4, H2S, NH3, CO2 gas around the barn are lower than inside the dairy cow breeding after 30 days of using COSTE-MT01.Trong chăn nuôi bò sữa, cùng với sự gia tăng về số lượng bò nuôi thì nguy cơ phát sinh mùi và các vi sinh vật có hại ra môi trường đất, nước, không khí từ chăn nuôi ngày càng cao nếu không có biện pháp xử lý phù hợp. Việc sử dụng chế phẩm vi sinh vật COSTE-MT01 nhằm mục đích giảm thiểu phát sinh mùi và mật độ của một số loại vi sinh vật không có lợi từ quá trình chăn nuôi. Chế phẩm COSTE-MT01 được tiến hành tại 5 trang trại chăn nuôi bò sữa có số lượng bò trên 30 con, với hình thức chăn nuôi tập trung nhằm đánh giá sự biến đổi một số chỉ tiêu vi sinh vật sau khi sử dụng chế phẩm. Kết quả cho thấy: Trước khi sử dụng chế phẩm, chỉ tiêu E.coli dao động từ 101-6x101 CFU/m3, Coliform từ 25-4,5x102 CFU/m3, nấm mốc 30-6,5x103 CFU/m3 . Sau 3h sử dụng chế phẩm, chỉ tiêu E.coli còn 1-2 CFU/m3 không khí, mật độ Coliform là 102 CFU/m3, mật độ nấm mốc giảm xuống ở mức 3,5x102 CFU/m3. Xung quanh khu vực chăn nuôi bò sữa mật độ Coliform , E.coli và nấm mốc đều giảm. Bên cạnh đó, hiệu quả xử lý khí trong chuồng nuôi cũng được cải thiện rõ rệt sau 30 ngày sử dụng chế phẩm: nồng độ CH4, H2S, NH3 giảm đều nằm trong giới hạn cho phép của QCVN 06:2009/BTNMT, riêng CO2 tăng nhẹ. Hiệu quả xử lý khí CH4, H2S, NH3, CO2 xung quanh chuồng nuôi đều thấp hơn so với bên trong chăn nuôi bò sữa sau 30 ngày sử dụng chế phẩm COSTE-MT01.

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