NGHIÊN CỨU KHẢ NĂNG SẢN XUẤT CỦA GÀ RỪNG TAI ĐỎ TÂY BẮC (GALLUS GALLUS SPADICEUS) THEO PHƯƠNG THỨC NUÔI NHỐT TẠI THANH HÓA

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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.154

Bộ sưu tập: Metadata

ID: 303143

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Nghiên cứu được thực hiện trên 84 gà Rừng tai đỏ Tây Bắc (Gallus gallus spadiceus) (gồm 36 gà trống và 48 gà mái) nuôi nhốt trong nông hộ tại Thanh Hóa từ tháng 5/2016 đến tháng 8/2019 nhằm đánh giá khả năng sản xuất của chúng. Sử dụng các phương pháp nghiên cứu cơ bản trong chăn nuôi gia cầm. Kết quả cho thấy: gà Rừng tai đỏ Tây Bắc thích nghi tốt với điều kiện nuôi nhốt. Nuôi đến 12 tuần tuổi gà rừng đạt tỷ lệ nuôi sống trung bình là 87,67%
khối lượng đạt 452,28 g đối với con trống và 445,40 g đối với con mái. Năng suất trứng trung bình từ 18 đến 23 quả/mái/năm
tỷ lệ đẻ đạt từ 10,29 đến 12,38%
tỷ lệ trứng có phôi đạt từ 82,67 đến 83,42%
tỷ lệ nở/trứng có phôi đạt từ 80,95 đến 81,73% với thời gian ấp trung bình là 18 ngày. Gà rừng có chất lượng trứng tương đối tốt: khối lượng trứng gà trung bình là 28,69 g/quả
chỉ số hình dạng là 1,36
chỉ số lòng đỏ là 0,33
chỉ số Haugh là 72,40
độ dày của vỏ trứng là 0,31.The study was carried out on 84 red ear jungles (Gallus gallus spadiceus) (including 36 males and 48 females) kept in confined household condition in Thanh Hoa province from May 2016 to August 2019 to assess their production ability. Results showed that red ear jungles adapted well to captivity. At 12 weeks of age, chickens achieved survival rate was 87.67%
body weight was 452.28 g for males and 445.40 g for females. Egg productivity was from 18 to 23 eggs/hen/year
average laying rate from 10.29 to 12.38%
the percentage of embryos egg from 82.67 to 83.42%
hatching rate/embryo egg from was 80.95 to 81.73% with an average time of incubation was 18 days. The egg quality was high: egg weight was 28.69 g/egg
shape index was 1.36
the yolk index was 0.33
Haugh index was 72.40
the thickness of the eggshell was 0.31.

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