Năng suất sinh sản và một số yếu tố ảnh hưởng đến năng suất sinh sản của lợn nái YVN1 và YVN2

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Ngôn ngữ: Vie

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Thông tin xuất bản: Tạp chí Khoa học và Công nghệ Việt Nam, 2020

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Nghiên cứu nhằm đánh giá năng suất sinh sản và một số yếu tố ảnh hưởng đến năng suất sinh sản của lợn nái YVN1 và YVN2. Các chỉ tiêu về khả năng sinh sản được đánh giá đối với 35 nái YVN1 và 35 nái YVN2 qua 3 lứa đẻ (từ năm 2017 đến 2019). Kết quả nghiên cứu cho thấy, yếu tố giống ảnh hưởng đến số con sơ sinh (SS)/ổ và số con sơ sinh sống (SSS)/ổ, ảnh hưởng rõ rệt đến số con cai sữa/ổ và khối lượng cai sữa/ổ. Yếu tố lứa đẻ ảnh hướng đến số con SSS/ổ và khối lượng SSS/ổ, ảnh hưởng rõ rệt đến số con cai sữa/ổ và khối lượng cai sữa/ổ. Lợn nái YVN1 và YVN2 có sinh lý phát dục bình thường với tuổi phối giống lần đầu tương ứng là 220,36 và 222,03 ngày, tuổi đẻ lứa đầu là 335,62 và 336,63 ngày. Năng suất sinh sản của lợn nái YVN1 và YVN2 đạt cao (YVN2 cao hơn YVN1). Lợn nái YVN1 và YVN2 lần lượt có số con SSS/ổ là 11,51 và 12,12 con, số con cai sữa/ổ là 10,92 và 11,71 con, số con cai sữa/nái/năm là 26,68 và 27,75 con, khối lượng SSS/ổ là 16,46 và 17,49 kg, khối lượng cai sữa/ổ là 70,41 và 75,81 kg. Năng suất sinh sản của cả lợn nái YVN1 và YVN2 tại lứa 1 đều thấp hơn so với lứa 2 và 3., Tóm tắt tiếng anh, This study was conducted to evaluate the reproductive performance and factors affecting the reproductive performance of the YVN1 and YVN2 sows in National Pig Research and Development Center. Data were collected from 35 YVN1 sows and 35 YVN2 sows over three litters from 2017 to 2019. The results showed that the breed factor affected the total number of newborn (NB) and newborn alive (NBA), number of pig weaned (NW), and litter weaning weight (LWW). Litter factor effected to NBA, litter birth weight (LBW), NW, and LWW. YVN1 and YVN2 pigs had normal reproductive physiology. The age of the first server of YVN1 and YVN2 was 220.36 and 222.03 days, respectively
age at first farrowing was 335.62 and 336.63 days. YVN1 and YVN2 sows had a high reproductive performance but the reproductive performance of YVN2 sows was higher than those in YVN1 sows. The NBA of YVN1 and YVN2 was 11.51 and 12.12 piglets, respectively, NW was 10.92 and 11.71 piglets, LBW was 16.46 and 17.49 kg, LWW was 70.41 and 75.81 kg. Total number weaning pig/sow/year was 26.68 (YVN1) piglets and 27.75 (YVN2) piglets. Besides, the reproductive performance of the YVN1 and YVN2 sows was the lowest at first litter and slightly increase in second and third litter.

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