Effects of different proportions of dietary structural
and nonstructural carbohydrates on ruminal
fermentation and microbial growth efficiency in
sheep

Z. G. Xia; Q. X. Meng

doi:10.22358/jafs/74492/2007

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Suppl. 2/2007 vol. 16

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SHORT COMMUNICATION

Effects of different proportions of dietary structural and nonstructural carbohydrates on ruminal fermentation and microbial growth efficiency in sheep

Z. G. Xia ¹

Q. X. Meng ²

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China Green Food Development Center, Beijing 100081, P.R. China

State Key Laboratory of Animal Nutrition, College of Animal Sciences and Technology, China Agricultural University, Beijing 100094, P.R. China

Publication date: 2007-09-17

Corresponding author

Q. X. Meng

State Key Laboratory of Animal Nutrition, College of Animal Sciences and Technology, China Agricultural University, Beijing 100094, P.R. China

J. Anim. Feed Sci. 2007;16(Suppl. 2):218-223

DOI: https://doi.org/10.22358/jafs/74492/2007

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KEYWORDS

sheep

SC:NSC

rumen fermentation

microbial growth efficiency

ABSTRACT

Four sheep were used in a 4×4 Latin square design to study the effect of different dietary proportions of structural carbohydrate (SC) and nonstructural carbohydrate (NSC) (SC:NSC ratio: 0.55, 1.12, 2.25 and 5.24) on rumen fermentation and microbial growth efficiency. As the dietary SC: NSC ratio increased, ruminal pH and ammonia concentration increased (P<0.001), but total rumen VFA concentration decreased (P<0.001). When dietary SC:NSC ratio increased from 0.55 to 1.12, the molar percentage of acetate increased (P<0.001) and the molar proportion of propionate decreased (P<0.001). However, when the ratio increased from 1.12 to 5.24, there were no changed molar percentages of acetate and of propionate. Both daily microbial nitrogen production and microbial efficiency decreased with increasing dietary SC:NSC ratio.

CITATIONS (1):

Effect of nonstructural carbohydrates on production performance, rumen metabolism and rumen health in lambs fed with isocaloric and isonitrogenous complete diets
Senthilkumar Panneerselvam, Vasan Palanisamy, Mohan Balasubramaniam, Selvaraj Palanisamy, Muralidharan Jaganathan, Thiruvenkadan Aranganoor Kannan
Tropical Animal Health and Production

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1230-1388

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