Effect of the peNDF Level of Straw Combined Pellet Feed on Blood Biochemical Indexes in Fattening Sheep

doi:10.6048/j.issn.1001-4330.2019.04.018

Abstract

Abstract: 【Objective】 To study the effect of peNDF level of straw mixture pellet feed on sheep production performance. 【Methods】 42 5-month-old healthy male lambs of small tail Han sheep were randomly divided into 2.5 mm group, 6 mm group, 12 mm group, 16 mm group, 20 mm group and 25 mm group according to their body weight, with 7 lambs in each group. These sheep were fed with different diets according to their roughage particle size and were added the same proportion to the same nutrients requirements diet during 70-day experimental period. 【Results】 The results showed that the content of serum total protein in 2.5 mm group was significantly lower than that in 6 mm group, 12 mm group and 25 mm group; Serum albumin content in 2.5 mm group was also significantly lower than that in 20 mm group and 25 mm group; The content of serum urea nitrogen in 2.5 mm group was 19.09%(P<0.01), 26.60% (P<0.01), 22.54% (P<0.01), 16.28% (P< 0.05) and 18.94% (P< 0.01) higher, respectively than that in 6 mm group, 12 mm group, 16 mm group, 20 mm group and 25 mm group; The content of lactate dehydrogenase increased gradually along with the increase of peNDF level in straw combined particle; The serum lactate dehydrogenase content in 25 mm group was higher than that in 2.5 mm and 6 mm group 15.67% and 13.75%, respectively (P<0.05) and there was no significant difference in other groups. The blood cholesterol level in 25 mm group was 16.94% (P<0.05) and 21.31% (P<0.01) higher, respectively than that in 6 mm and 12 mm group; The serum alkaline phosphatase content in 20 mm group was 37.64%(P<0.01), 32.99%(P<0.01), 25.67%(P<0.05), 30.33%(P<0.01) and 28.30%(P<0.01) higher, respectively than that in 2.5 mm, 6 mm, 12 mm, 16 mm and 25 mm group. 【Conclusion】 The results showed that when straw combined particle's peNDF_1.18 was 6.24%-7.69% and peNDF_8.00 was 47.88%-52.61%, it was not conducive to energy metabolism and protein synthesis metabolism in sheep and when the straw combined particle's peNDF_1.18 was 64.09%-73.32% and peNDF_8.00 was 27.03%-47.05%, it was beneficial to sheep body fat deposition

Key words: physically effective neutral detergent fiber; energy metabolism; protein metabolism; lipid metabolism; sheep

摘要： 【目的】研究秸秆配合颗粒饲料peNDF水平对绵羊生产性能的影响。【方法】试验选取健康的5月龄的小尾寒羊公羔42只,依据体重进行单因素完全随机试验设计,分为2.5 mm组、6 mm组、12 mm组、16 mm组、20 mm组和25 mm组,每组7只。试验期70 d。【结果】血清总蛋白含量2.5 mm组显著低于6 mm组、12 mm组和25 mm组。血清白蛋白含量2.5 mm组也显著低于20 mm组和25 mm组。血清尿素氮含量2.5 mm组分别比6 mm组、12 mm组、16 mm组、20 mm组和25 mm组高19.09%(P<0.01)、26.60%(P<0.01)、22.54%(P<0.01)、16.28%(P<0.05)和18.94%(P<0.01)。血清乳酸脱氢酶含量随着秸秆颗粒饲料中peNDF水平的增加而逐步升高,25 mm组的血清乳酸脱氢酶含量分别比2.5 mm组和6 mm组高15.67%和13.75%,差异显著(P<0.05);其它各组间差异不显著。血液胆固醇的含量25 mm组分别比6 mm组和12 mm组高16.94%(P<0.05)和21.31%(P<0.01)。血清碱性磷酸酶含量20 mm组分别比2.5 mm组、6 mm组、12 mm组、16 mm组和25 mm组高37.64%(P<0.01)、32.99%(P<0.01)、25.67%(P<0.05)、30.33%(P<0.01)和28.30%(P<0.01)。【结论】秸秆配合颗粒中peNDF_1.18为6.24%~7.69%,peNDF_8.00为47.88%~52.61%时,不利于绵羊机体的能量代谢和蛋白合成代谢。peNDF_1.18为64.09%~73.32%,peNDF_8.00为27.03%~47.05%时,有利于绵羊体脂沉积。

关键词: 物理有效纤维, 能量代谢, 蛋白质代谢, 脂肪代谢, 绵羊

CLC Number:

S826

WU Hong-yan , GUO Tong-jun , ZHANG Zhi-jun , ZHANG Jun-yu , SANG Duan-ji , ZANG Chang-jiang. Effect of the peNDF Level of Straw Combined Pellet Feed on Blood Biochemical Indexes in Fattening Sheep[J]. Xinjiang Agricultural Sciences, 2019, 56(4): 749-757.

吴红岩, 郭同军, 张志军, 张俊瑜, 桑断疾, 臧长江. 秸秆配合颗粒饲料peNDF水平对绵羊血液生化指标的影响[J]. 新疆农业科学, 2019, 56(4): 749-757.

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