SỰ BIẾN ĐỘNG VỀ ƯU THẾ LAI CỦA CÁC TỔ HỢP LAI KHÁC NHAU GIỮA 3 GIỐNG LỢN DUROC, PIÉTRAIN, LANDRACE

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Tác giả: Ngọc Bách Đinh, Văn Bình Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2023

Mô tả vật lý: tr.42-47

Bộ sưu tập: Metadata

ID: 333166

Thêm vào giỏ Liên kết toàn văn

Nghiên cứu các yếu tố ảnh hưởng tới sức sản xuất của con giống là rất quan trọng để đề xuất các giải pháp nâng cao sức sản xuất của chúng. Mục đích của nghiên cứu này là phân tích sự biến động của ưu thế lai về một số tính trạng sản xuất của các tổ hợp lai giữa 3 giống lợn Duroc, Piétrain, Landrace để chọn ra các tổ hợp lai tốt nhất đưa vào sản xuất. Nghiên cứu được thực hiện trên 767 cá thể của 3 giống Duroc, Piétrain, Landrace và 528 cá thể của 04 tổ hợp lai giữa chúng với công thức lai khác nhau. Các tính trạng nghiên cứu là: Tăng khối lượng, dày mỡ lưng, tiêu tốn thức ăn, tỉ lệ nạc. Kết quả nghiên cứu cho thấy: Ưu thế lai tốt nhất ở tổ hợp lai F1 – lai thuận giữa các cặp Duroc x Piétrain, Duroc x Landrace và Piétrain x Landrace về cả 4 tính trạng. Đặc biệt, ưu thế lai về tăng khối lượng cao nhất ở tổ hợp lai Duroc x Piétrain (1,06%), thấp nhất ở tổ hợp lai Piétrain x Landrace (0,35%)
Nhưng ưu thế lai về tỷ lệ nạc lại cao nhất ở tổ hợp lai Piétrain x Landrace (2,47%) và thấp nhất ở tổ hợp lai Duroc x Piétrain (0,38%)
Các tính trạng tăng khối lượng và tỷ lệ nạc có ưu thế lai >
0, trái lại các tính trạng dày mỡ lưng và tiêu tốn thức ăn có ưu thế lai <
0. Đây là lợi điểm quan trọng trong lai tạo để tạo ra các giống lợn sinh trưởng tốt, tỷ lệ nạc cao nhưng lại tiêu tốn thức ăn thấp.Studying the factors affecting the production capacity of breeding stock is very important to propose solutions to improve their production. The purpose of this study is to analyze the variation of hybrid superiority in some production traits of the hybrid combinations between 3 breeds of pigs Duroc, Piétrain, Landrace in order to select the best hybrid combinations.put into production. The study was carried out on 767 individuals of 3 breeds Duroc, Piétrain, Landrace and 528 individuals of 04 hybrid combinations between them with different hybrid formulas. The studied traits were: Weight gain, back fat thickness, feed consumption, lean percentage. The research results show that: The best hybrid advantage is in the F1-forward hybrid between Duroc x Piétrain, Duroc x Landrace and Piétrain x Landrace pairs for all 4 traits. In particular, the hybrid advantage in terms of weight gain was highest in the Duroc x Piétrain hybrid (1.06%), the lowest in the Piétrain x Landrace hybrid (0.35%)
But the hybrid advantage in lean percentage was highest in Piétrain x Landrace hybrid (2.47%) and lowest in Duroc x Piétrain hybrid (0.38%). The traits of weight gain and lean percentage have hybrid advantage >
0, whereas the traits of thick back fat and feed consumption have hybrid dominance <
0. This is an important advantage in crossbreeding to create pigs with good growth, high lean percentage but low feed consumption.

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