不同营养水平饲粮对安黑杂交牛生长性能、养分消化和抗氧化性能的影响

doi:10.16431/j.cnki.1671-7236.2024.08.011

摘要/Abstract

摘要： 【目的】旨在研究高、低营养水平饲粮对安黑杂交牛生长性能、养分消化和抗氧化性能的影响。【方法】采用对比试验设计,选取体况良好,体重(206.08 kg±21.87 kg)和月龄(6月龄左右)相近的安格斯(♂)×黑西门塔尔(♀)杂交牛12头(公母各半),随机分为2组,每组6头,分别饲喂高、低营养水平饲粮。其中,高营养水平配方在试验前(1~31 d)、后(32~62 d)期的综合净能(NE_mf)分别为5.77 和6.00 MJ/kg、粗蛋白质(CP)分别为12.47%和10.44%;低营养水平配方前、后期的NE_mf分别为5.42和 5.57 MJ/kg、CP分别为9.66%和9.05%。预试期12 d,正试期62 d,试验第1和62天测定体重和体尺;最后8 d进行消化试验,测定肉牛有机物(OM)、CP、粗脂肪(EE)、中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)消化率。【结果】试验全期,高营养水平组肉牛的平均日增重、平均日采食量和腹围显著高于低营养水平组(P＜0.05),分别高39.09%、22.20%和6.17%;料重比有低于低营养水平组的趋势(P=0.087)。饲粮营养水平对安黑杂交牛OM、CP、EE、NDF和ADF消化率没有显著影响(P＞0.05)。高营养水平组肉牛的血清总抗氧化能力显著低于低营养水平组(P＜0.05);血清谷胱甘肽过氧化物酶活性和丙二醛含量在两组间差异不显著(P＞0.05)。【结论】与低营养水平配方相比,高营养水平配方饲粮更能促进安黑杂交牛的生长发育。

关键词: 安黑杂交牛; 生长性能; 养分消化; 抗氧化性能

Abstract: 【Objective】 This experiment was conducted to study the effects of high and low nutrient level diets on growth performance,nutrient digestion and antioxidant property of Anhei crossbred cattle.【Method】 A comparative experimental design was used and twelve healthy Angus (♂)×Black Simmental (♀) cross cattle with similar body weight (206.08 kg±21.87 kg) and age (about 6 months,half male and half female) were randomly divided into two groups with 6 cattle in each group and fed low and high nutrient level diet respectively.The pre-trial and normal trial periods were 12 and 62 days,respectively.The comprehensive net energy (NE_mf) of the high nutrient level formula diet in the early (1-31 d) and late (32-62 d) stages were 5.77 and 6.00 MJ/kg,and the crude protein (CP) was 12.47% and 10.44%.The NE_mf of the low nutrient level formula diet in the early and late stages were 5.42 and 5.57 MJ/kg,and the CP were 9.66% and 9.05%.Body weight and body size were measured on days 1 and 62.The digestion experiment was done in the last 8 days,and the digestibility of organic matter (OM),CP,ether extract (EE),neutral detergent fiber (NDF) and acid detergent fiber (ADF) were measured.【Result】 In whole stage,the average daily gain,average daily feed intake and the abdominal circumference of the cattle in the high nutrient level group were significantly higher than those in the low nutrient level group by 39.09%,22.20% and 6.17% (P＜0.05).The F/G of the high nutrient level group had a lower tendency than that of the low nutrient level group (P=0.087).The digestibility of OM,CP,EE,NDF and ADF of Anhei crossbred cattle was not affected significantly by dietary nutrient levels (P＞0.05).The serum total antioxidant capacity of the cattle in the high nutrient level group was significantly lower than that in the low nutrient level group (P＜0.05),glutathione peroxidase activity and malondialdehyde content were not affected significantly by the treatments (P＞0.05).【Conclusion】 In conclusion,compared with the low nutrient level diet,the high nutrient level diet could better promote the growth and development of Anhei crossbred cattle.

Key words: Anhei crossbred cattle; growth performance; nutrient digestion; antioxidant property

中图分类号:

S816.4

杜兰霞, 杨瑞鑫, 刘菲菲, 郭艳丽, 魏立明. 不同营养水平饲粮对安黑杂交牛生长性能、养分消化和抗氧化性能的影响[J]. 中国畜牧兽医, 2024, 51(8): 3329-3336.

DU Lanxia, YANG Ruixin, LIU Feifei, GUO Yanli, WEI Liming. Effects of Diets with Different Nutrient Levels on Growth Performance,Nutrient Digestion and Antioxidant Property of Anhei Crossbred Cattle[J]. China Animal Husbandry and Veterinary Medicine, 2024, 51(8): 3329-3336.

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