Ảnh hưởng của thời gian đẻ trứng trong ngày tới khối lượng, chỉ số hình thái và tỷ lệ âp nở của gà Ross 308

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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.57-61

Bộ sưu tập: Metadata

ID: 337126

Thêm vào giỏ Liên kết toàn văn

Effects of egg-laying times in a day on the egg weights, shape index of egg, andhatchability parameters of the Ross 308Ross 308 is a super meat chicken breed with high productivity, short rearing time and suitablefor the conditions in Vietnam. This study investigated the effects of egg-laying times in a day on theegg weights, shape index of eggs and the hatchability parameters of the Ross 308. The eggs werelaid mostly in the morning and the highest rate was from 8:30am to 10:30am. This period of timealso had the highest percentage of embryonated eggs. The egg weight of Ross 308 was 57.57±1,008gand the shape index of eggs was 1,288±0.011. Egg-laying times in the day was an effect on eggweights, but not on the shape index of eggs. The highest percentage of embryonated eggs and thelevel 1 chicks were from the eggs group that laid at 8:30 to 12:30am.Gà Ross 308 là giống gà siêu thịt có năng suất cao, thời gian nuôi ngắn và phù hợp với điềukiện khí hậu Việt Nam. Thí nghiệm này nghiên cứu ảnh hưởng của thời gian đẻ trứng trong ngàyđến khối lượng, chỉ số hình thái và các chỉ tiêu ấp nở của trứng gà giống bố mẹ Ross 308. Kết quảcho thấy trứng gà Ross 308 được đẻ rộ vào buổi sáng và đẻ rộ nhất vào 8h30-10h30. Đây cũng là thờiđiểm cho tỷ lệ trứng giống cao nhất. Gà Ross 308 có khối lượng trứng trung bình là 57,57±1,008g vàchỉ số hình thái trung bình là 1,288±0,011. Thời điểm đẻ trứng khác nhau trong ngày có ảnh hưởngđến khối lượng trứng, nhưng không ảnh hưởng đến chỉ số hình thái trứng. Trứng đẻ ra trongkhoảng 8h30 đến 12h30 cho kết quả tỷ lệ trứng có phôi và tỷ lệ gà con loại 1 là cao nhất.

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