Ảnh hưởng của tần suất khai thác đến chất lượng tinh trùng vịt Xiêm (Cairina moschata domesticus)=Effects of Collection Frequency on Semen Quality in Muscovy Ducks (Cairina moschata domesticus)

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Tác giả: Minh Trí Nguyễn, Thị Chúc Nguyễn, Thị Mỹ Phương Nguyễn, Nhân Phan, Thị Hồng Mơ Trịnh

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học và Công nghệ Chăn nuôi, 2024

Mô tả vật lý: tr.70-78

Bộ sưu tập: Metadata

ID: 241918

Thêm vào giỏ

Nghiên cứu được tiến hành từ tháng 09/2023 đến tháng 04/2024 tại trại chăn nuôi thực nghiệm thuộc trường Đại học Tây Đô nhằm đánh giá ảnh hưởng tần suất khai thác đến chất lượng của tinh trùng ở vịt Xiêm trống. Tinh trùng của 60 vịt Xiêm trống giai đoạn từ 7-8 tháng tuổi được chia vào 3 dãy chuồng được chọn, đánh số vịt và phân ngẫu nhiên vào các lồng, mỗi lồng 2 vịt Xiêm trống. Các lồng nuôi được bố trí ở 3 dãy chuồng, mỗi dãy 20 vịt trống để lấy tinh theo tần suất 1 ngày/lần
3 ngày/lần
7 ngày/lần
thu thập tinh dịch bằng phương pháp massage bụng và được trữ trong dung dịch trữ tinh Lorenz trữ ở tủ mát 4°C. Các chỉ tiêu về đặc điểm và chất lượng tinh trùng được ghi nhận bằng phương pháp quan sát bằng mắt thường kết hợp với kính hiển vi điện tử và quay video. Kết quả nghiên cứu cho thấy tần suất khai thác 3 ngày/lần mang lại chất lượng tinh trùng cao nhất với các chỉ số vượt trội: thể tích tinh dịch đạt 0,47ml, hoạt lực tinh trùng 93,8%, và nồng độ tinh trùng 2,96 tỷ/ml. Trong khi đó, tần suất khai thác 1 ngày/lần và 7 ngày/lần cho thấy sự suy giảm rõ rệt về các chỉ tiêu này, với thể tích lần lượt là 0,34 ml và 0,44 ml, hoạt lực 85,4% và 61,7%, nồng độ 1,97 tỷ/ml và 1,83 tỷ/ml. Mối tương quan Pearson cho thấy tần suất khai thác cao có mối tương quan âm mật thiết với thể tích (-0,767) (P<
0,01), hoạt lực (-0,492), (P<
0,001) và nồng độ (-0.295), (P<
0,01) cho thấy rằng việc khai thác quá thường xuyên có thể làm giảm chất lượng tinh trùng. Tần suất khai thác 3 ngày/lần được coi là tối ưu để duy trì chất lượng tinh trùng cao nhất.The study was conducted from September 2023 to April 2024 at the experimental livestock farm of Tay Do University to evaluate the effects of collection frequency on the semen quality of Muscovy drakes (Cairina moschata domesticus). Semen from 60 drakes aged 7–8 months was divided into three housing rows, with the drakes numbered and randomly assigned to cages, each cage housing two drakes. The cages were organized into three rows, with 20 drakes per row subjected to collection frequencies of 1 day/collection, 3 days/collection, and 7 days/collection. Semen was collected via abdominal massage and preserved in Lorenz extender at 4°C. Semen characteristics and quality parameters were recorded through visual observation combined with electron microscopy and video recording. The results showed that a collection frequency of every 3 days yielded the highest semen quality, with semen volume reaching 0.47 ml, sperm motility 93.8%, and sperm concentration 2.96 billion/ml. Meanwhile, collection frequencies of 1 day/collection and 7 days/collection resulted in significant declines in these parameters, with semen volumes of 0.34 ml and 0.44 ml, motility of 85.4% and 61.7%, and concentrations of 1.97 billion/ml and 1.83 billion/ml, respectively. Pearson correlation analysis revealed that high collection frequency negatively correlated with semen volume (-0.767, P<
0.01), motility (-0.492, P<
0.001), and concentration (-0.295, P<
0.01), indicating that excessive collection frequency could reduce semen quality. A collection frequency of every 3 days was found to be optimal for maintaining the highest semen quality.

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