Ảnh hưởng của bổ sung khoáng nano trong khẩu phần thức ăn đến khả năng sinh trưởng của lợn thịt

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Tác giả: Nghĩa Sơn Hoàng

Ngôn ngữ: vie

Ký hiệu phân loại: 636.0852 Animal husbandry

Thông tin xuất bản: Sinh học, 2020

Mô tả vật lý: 125-131

Bộ sưu tập: Metadata

ID: 489049

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Chủ đề

Nghiên cứu này được thực hiện nhằm đánh giá ảnh hưởng của việc bổ sung nano khoáng trong khẩu phần thức ăn đến sự tăng trưởng của lợn thịt. Tổng số 180 lợn thịt sử dụng cho nghiên cứu này, được chia thành 4 nhóm thí nghiệm và nhóm đối chứng, mỗi nhóm 3 ô, mỗi ô 12 con (tương ứng 3 lần lặp lại). Kết quả nghiên cứu cho thấy, khối lượng lợn thịt lúc bắt đầu và kết thúc thí nghiệm không có sự khác biệt về mặt thống kê. Khối lượng tăng trọng/ngày của lợn thịt giữa nhóm đối chứng và nhóm thí nghiệm như nhau. Tuy nhiên, chỉ số chuyển hóa thức ăn của 4 nhóm thí nghiệm I, II, III và IV tương ứng 3,00±0,28
2,95±0,11
2,85±0,19 và 2,90±0,24 đều thấp hơn so với nhóm đối chứng (3,17±0,42). Hàm lượng kim loại Fe, Cu, Zn và Mn tồn dư trong gan lợn thịt đều thấp hơn so với ở nhóm đối chứng. Ngoài ra, lượng kim loại Fe và Zn trong nước tiểu và phân của các nhóm thí nghiệm cũng thấp hơn so với nhóm đối chứng. Các kết quả trên cho thấy việc bổ sung nano khoáng trong thức ăn đã giúp tăng khả năng chuyển hóa thức ăn ở lợn thịt, giảm lượng thức ăn cho 1 kg tăng trọng đồng thời làm giảm lượng các kim loại thải ra môi trường.This paper examined the effects of nano mineral supplementation of diets on the growth of pigs. The total of 180 pigs used for this study were classified into 4 experimental groups and one control group. The results showed that the weight of pigs at the beginning and the end of the experiment was insignificantly different between experimantal and control groups. The same daily gain weight was observed between experimental and control groups. However, the feed conversion ratio (FCR) of four experimental groups I, II, III and IV is 3.00 ± 0.28, 2.95 ± 0.11, 2.85 ± 0.19 and 2.90 ± 0.24, respectively, that were lower than of the control groups, i.e. 3.17 ± 0.42. The mineral content of Fe, Cu, Zn and Mn in liver of pigs in all the experimental groups is lower than that in liver of pigs in the control group. In addition, the amount of Fe and Zn metal in urine and feces of the experimental groups is also lower than in the control group. The results of our study showed that the addition of nano minerals in diets for pigs not only reduced the feed conversion ratio in pigs, also decreased the amount of minerals releasing into the environment.

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