Ảnh hưởng của công tác chọn lọc giống đến sinh trưởng của đàn bò h'mông tại huyện đồng văn tỉnh hà giang

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Tác giả: Hưng Quang Nguyễn, Hữu Cường Nguyễn, Duy Hiền Phạm, Huê Viên Trần

Ngôn ngữ: vie

Ký hiệu phân loại: 636.232 Beef breeds

Thông tin xuất bản: Khoa học và Công nghệ, 2014

Mô tả vật lý: 123-130

Bộ sưu tập: Metadata

ID: 556282

 The study focused on three main points. The first content was selection and classification of H'Mong cattle herds raised in 150 households in Dong Van district, Ha Giang province. The second part was assessment on growth ability of calves from selected parents. Finally, based on monitoring results of the second generation calves, effects of breed selection to the following generations were evaluated using generalized linear models (GLM) and regression equations. Findings revealed that H'Mong cattle were heavily muscled
  mature cattle reached 298 kg/head for female and up to 363 kg/head for male. At the age of over 2.5 years, they could produce their first calf
  and the time between two parities was 16 months. The selection of heavy parents improved body weight and growth rate of calves. Calf weight (kg/head) of selected parents was always higher than that of the control group at both newborn and 6-month stages with specific results of 20.3 kg and 81.1 kg/head compared with 18.7 kg and 75.1 kglhead of the control group (P or
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