ẢNH HƯỞNG CỦA CHẾ PHẨM MEN LACTO SỐNG ĐẾN KHẢ NĂNG SINH TRƯỞNG CỦA GÀ RI CẢI TIẾN

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Ngôn ngữ: vie

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Thông tin xuất bản: Tạp chí Khoa học - Trường Đại học Hồng Đức, 2020

Mô tả vật lý: tr.86

Bộ sưu tập: Báo, Tạp chí

ID: 301567

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Nghiên cứu được thực hiện trên 180 cá thể gà Ri cải tiến (90 trống và 90 mái) từ 1 ngày tuổi đến 12 tuần tuổi nuôi theo ph ơng thức nuôi nhốt, lặp lại 3 lần, tại Trung tâm Nghiên cứu Ứng dụng Khoa học - Kỹ thuật chăn nuôi tỉnh Thanh Hoá trong năm 2019 nhằm đánh giá sự ảnh hưởng của chế phẩm men Lacto sống đến tỷ lệ nuôi sống, khả năng sinh trưởng, hiệu quả chuyển hóa thức ăn của gà Ri cải tiến. Kết quả nghiên cứu cho thấy bổ sung chế phẩm men Lacto sống với liều 02 g/lít n ớc uống cho gà Ri cải tiến nuôi đến 12 tuần tuổi đã làm tăng tỷ lệ nuôi sống so với gà không được bổ sung chế phẩm này (93,33% so với 91,11%). Khối lượng cơ thể gà của lô thí nghiệm cao hơn lô đối chứng (1927,14 g/con so với 1838,29 g/con) và tiêu tốn thức ăn cho 1 kg tăng khối lượng ở lô thí nghiệm thấp hơn lô đối chứng (2,67 kg so với 3,02 kg).The study was conducted on 180 improved Ri chickens (90 males and 90 females) from 1 day of age to 12 weeks of age, following intensive rearing methods, repeated 3 times, at Research Application Science and Technology Livestock Center of Thanh Hoa province in order to evaluate the effect of live lacto yeast supplementation in diet on survival rate, growth performance and FCR of improved Ri chickens. The resutls showed that supplementation live lacto yeast at a dose of 2 g/l drinking water for improved Ri chicken raised to 12 weeks of age has increased the survival rate (93.33% compared to 91.11%), body weight of experimental treatment were higher than control treatment (1927.14 g/head compared to 1838.29 g/head) and feed conversion ratio of experimental treatment was lower than control treatment (2.67 kg compared to 3.02 kg).

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