Correlation research between gas production characteristics and CNCPS components for roughages

• Published in: IOP conference series. Earth and environmental science Vol. 185; no. 1; pp. 12015 - 12021
• Main Author: Sui, M X
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 30.08.2018
• Subjects: Ashes; Carbohydrates; Correlational studies; Degradation; Gas production; Oil and gas production; Parameters; Proteins
• ISSN: 1755-1307; 1755-1315; 1755-1315
• DOI: 10.1088/1755-1315/185/1/012015

The experiment was to study the correlations between gas production characteristics and Cornell Net Carbohydrate and Protein System (CNCPS) components of seven roughages, which shortened the experimental cycles. The ruminant fluid was collected and cultivated in vivo. The results showed negative correlations between cumulative gas productions at 12, 24, 36, 72 h (P < 0.05), 48 h (P < 0.01) and Crude protein (CP), but positive correlations between gas production at 12, 24, 36, 48, 72 h (P < 0.01) and Neutral Detergent Soluble (NDS)/CP, between gas production at 12 h (P < 0.05), 24, 36, 48, 72 h (P < 0.01) and (NDS-ASH(crude ash))/CP. Significant positive correlations were found between parameters a, b, a+b, c and NDS/CP (P < 0.01), as well as between parameters a, b, a+b (P < 0.01), c (P < 0.05) and (NDS-ASH)/CP. However, significant negative correlation was found between b, a+b, c and CP (P < 0. 05). The experimental results inferred a positive correlation between degradation rate of Neutral Detergent Fiber (NDF) (P < 0.01), Acid Detergent Fiber (ADF) (P < 0.05) and CP, but negative correlation between degradation rate of NDF (P < 0.05), ADF (P < 0.01) and NDS/CP, (NDS-ASH)/CP.