Influence of exogenous enzymes on nutrient digestibility, extent of ruminal fermentation as well as milk production and composition in dairy cows

By H. Gado, A. Salem, P. Robinson, M. Hassan. 2009

158 citations recorded by the source corpus.

Abstract This experiment studied effects of a mixture of exogenous enzymes (ZADO ® ) from anaerobic bacteria on ruminal fermentation, feed intake, digestibility, as well as milk production and composition in cows fed total mixed rations (TMRs; 0.7 corn silage and 0.3 of a concentrate mixture). Twenty lactating multiparous Brown Swiss cows (500 ± 12.4 kg live weight) were randomly assigned into two experimental groups of 10 immediately after calving and fed a TMR with or without (CTRL) addition of 40 g/cow/d of enzymes for 12 weeks. Addition of enzymes increased ( P P P P P P =0.05) before feeding, and acetate and propionate increased 3 h post-feeding (60.0–64.0 and 18.3–20.8 mol/100 mol respectively; P P ® supplemented diet. This exogenous enzyme product, supplemented daily to the TMR of cows in early lactation, increased milk production due to positive effects on nutrient intake and digestibility, extent of ruminal fermentation and microbial protein synthesis.

Subfields: Agronomy and Crop Science, Genetics

View Paper: https://www.semanticscholar.org/paper/89226ed7e153d404bb5d77781b18af2198f9330c

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

1. A. Salem
2. D. Colombatto
3. M. Elghandour
4. H. Gado

Citations in the corpus

• Effects of exogenous enzymes on nutrient digestibility, ruminal fermentation and growth performance in beef steers (2013, methodology): “Recently, some promising results were reported when a specific mixture of enzyme activities (ZADOs, Cairo, Egypt) was added to lambs (Gado et al., 2011) and dairy cows (Gado et al., 2009), but less published research is available regarding its effects on beef cattle performance.”