[Meta-analysis to optimizing dietary carbohydrate balance index in lactating dairy cow]

Li, F and Xu, M and Cao, Y C and Sun, F F and Yang, X J and Yao, J H and Li, D Q

Acta Veterinaria et Zootechnica Sinica (2014) 45: 1457–1466

Link: xmsyxb.com/EN/10.11843/j.issn.0366-6964.2014.09.011

Abstract

The objective of the present study was to optimizing the dietary forage NDF (FNDF) and rumen degradable starch (RDS) content and ratios by using the meta-analysis in dairy cows. We collected 39 peered review manuscripts, which were related to FNDF or RDS content on rumen health and milk performance in dairy cows. In this study, we adopted FNDF to RDS ratio (CBI[sub:R]) or their intake difference (CBI[sub:D]) as carbohydrate balance indexes (CBI), and evaluated their regression relationship to the ruminal pH, fermentation characteristics, milk fat and feed efficiency. The results revealed that the CBI[sub:R] and CBI[sub:D] showed strong linear or quadratic correlation with the dependent variables. Dietary CBI[sub:R] and CBI[sub:D] above 1. 28 or 1.09 kg.d⁻¹ could minimize the risk of subacute ruminal acidosis, respectively. To obtain appropriate feed efficiency (\textgreater=1.5), milk fat (\textgreater=3.5%) and acetate to propionate ratio (2.2:1-3:1) in dairy cows, the CBI[sub:D] and CBI[sub:R] should be set in the range of -0.42-0.99 kg.d⁻¹ and 0.93-1.30, respectively. In this study, the appropriate CBI[sub:D] and CBI[sub:R] ranges were calculated based on meta-analysis, the CBI[sub:D] and CBI[sub:R] can reflect the change of rumen health and performance of dairy cow.

Citation

Li, F., Xu, M., Cao, Y. C., Sun, F. F., Yang, X. J., Yao, J. H., & Li, D. Q. (2014). [Meta-analysis to optimizing dietary carbohydrate balance index in lactating dairy cow]. Acta Veterinaria Et Zootechnica Sinica, 45(9), 1457–1466. xmsyxb.com/EN/10.11843/j.issn.0366-6964.2014.09.011 [Indexed using CAB Thesaurus terms], animals, Artiodactyla, Chordata, eukaryotes, mammals, ungulates, vertebrates, Bos, Bovidae, cattle, cows, dairy cattle, dairy cows, meta-analysis, ruminants, acetates, acidosis, Animal Nutrition (General) [LL500], Animal Nutrition (Physiology) [LL510], butterfat, carbohydrate metabolism, carbohydrate modifications, carbohydrate modified diets, carbohydrates, cattle feeding, Dairy Animals [LL110], diets, feed conversion, forage, lactation, mathematical models, Mathematics and Statistics [ZZ100], metabolic acidosis, milk fat, propionates, rumen, saccharides, starch digestion, subacute ruminal acidosis

Keywords

• [Indexed using CAB Thesaurus terms]
• animals
• Artiodactyla
• Chordata
• eukaryotes
• mammals
• ungulates
• vertebrates
• Bos
• Bovidae
• cattle
• cows
• dairy cattle
• dairy cows
• meta-analysis
• ruminants
• acetates
• acidosis
• Animal Nutrition (General) [LL500]
• Animal Nutrition (Physiology) [LL510]
• butterfat
• carbohydrate metabolism
• carbohydrate modifications
• carbohydrate modified diets
• carbohydrates
• cattle feeding
• Dairy Animals [LL110]
• diets
• feed conversion
• forage
• lactation
• mathematical models
• Mathematics and Statistics [ZZ100]
• metabolic acidosis
• milk fat
• propionates
• rumen
• saccharides
• starch digestion
• subacute ruminal acidosis