Hiệu qua sử dụng kích dục tố LHRH-A3 đến năng suất sinh sản của ếch Thái Lan

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Tác giả: Khoa học Kỹ thuật Chăn nuôi

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học Kỹ thuật Chăn nuôi, 2023

Mô tả vật lý: tr.72-77

Bộ sưu tập: Metadata

ID: 337129

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Effect of LHRH-A3 on reproductive performance of Thai frogsThis study was conducted to evaluate the effect of using LHRH-A3 hormone on reproductiveperformance of Thai frog (Rana tigerina). The experiment was designed according to the one-factorcomparative batching method, including: 1 control group (DC) did not use sex hormones
and 3experimental groups used LHRH-A3 with different dosages: TN1 0.04 , TN2: 0.08 and TN3 0.12 mg/kg weight, each group included 15 pairs of parent frog. The experiment was repeated 3 times. Allplots apply artificial rain spray to ensure natural conditions for frogs to breed easily. The resultsshow that the use of sex hormones had the effect of stimulating the parent frog to reproduce, thelaying rate of the TN2 and TN3 plots was 100%, while the spawning rate of the control group was72.22% and TN1 was 77.78%
Reproductive yield of frogs in group TN3 was the highest in eggproduction, reaching 2,712.00 eggs, TN2 group 2,480.00 eggs, TN1 achieved 2,233.33 eggs and thelowest in control group reached 2,134.67 eggs (p<
0.05). Fertilization rate was highest in TN3 group(80.79%), followed by TN2 (79.53%), TN1 group (71.23%) and the lowest in control group (70.64%).Similarly, the highest hatching rate was in plot TN3 (89.24%), followed by plot TN2 (82.02%), plotTN1 (81.40%) and the lowest in plot DC (80.68%). Therefore, using hormones with a concentrationof 0.12 mg/kgP frogs to stimulate reproduction was the most appropriate.Nghiên cứu này thực hiện nhằm đánh giá hiệu quả của việc sử dụng kích dục tố LHRH-A3 đếnnăng suất sinh sản (NSSS) của ếch Thái Lan (Rana tigerina). Thí nghiệm được thiết kế theo phươngpháp phân lô so sánh 1 nhân tố: 1 lô đối chứng (ĐC): không sử dụng kích dục tố và 3 lô thí nghiệmlà 3 mức LHRH-A3 là 0,04
0,08 và 0,12 mg/kg KL ếch
18 cặp ếch bố mẹ/lô, được lặp lại 3 lần. Ở cáclô đều áp dụng biện pháp phun mưa nhân tạo đảm bảo điều kiện giống như tự nhiên để ếch dễdàng sinh sản. Kết quả cho thấy sử dụng kích dục tố có tác dụng kích thích ếch bố mẹ sinh sản, tỷlệ đẻ của TN2, TN3 là 100%, trong khi tỷ lệ đẻ của ĐC là 72,22% và TN1 là 77,78%. NSSS của ếch ởTN3 đạt cao nhất về sản lượng trứng (2712,00 trứng), TN2 đạt 2480,00 trứng, TN1 đạt 2233,33 trứngvà thấp nhất lô ĐC đạt 2134,67 trứng (P<
0,05)
đồng thời tỷ lệ thụ tinh cao nhất ở lô TN3 (80,79%),tiếp đến TN2 (79,53%), TN1 (71,23%) và thấp nhất ở ĐC (70,64%)
tương tự tỷ lệ nở cao nhất ở TN3(89,24%), tiếp đến TN2 (82,02%), TN1 (81,40%) và thấp nhất ở ĐC (80,68%), giữa các lô có sự saikhác đáng kể. Xét chung thì sử dụng kích dục tố với nồng độ 0,12 mg/kg KL ếch kích thích ếch sinhsản là phù hợp nhất.

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