Nitrogen intake, excretion (fecal and urine) and balance (absorption and retention) were similar between treatments whilst microbial nitrogen supply and efficiency of microbial protein synthesis were increased by MSP supplementation.
Urinary N was lower (P<0.01) for YS and YN diets versus the control diet, and microbial N supply and efficiency of microbial N synthesis were higher (P<0.05) in sheep fed the YS diet versus those fed the YN and control diets.
However, microbial N supply, and the efficiency of microbial N synthesis (EMNS) were lower in steers fed monensin or l-cysteine containing diets versus steers fed the control diet.
This study consisted of two experiments that investigated the effect of extrusion of sorghum starch on in situ ruminal and post-ruminal disappearance of dry matter (DM), starch and nitrogen (N) and the effects of substituting barley by the extruded sorghum on digestion characteristics, microbial N supply and growth in finishing lambs.
The results showed increased feed intake, nutrients digestibility, microbial protein supply and an increased in weight gain (Bórquez et al. 2009; Hassan et al. 2011; Martínez-Avalos et al. 1998; Sarwar et al. 2011).
During the last five years of the time series, normalized affinities had plateaued, possibly indicating a steady-state between hydrothermal energy supply and microbial utilization of energy.
Seasonal distribution of water pulses can lead to the accumulation of mineral N in the dry season, decoupling resource supply and microbial and plant demand, and resulting in increased losses via other pathways and reduction in overall soil nutrient pools.
The effect of dietary substitution of different levels (0, 100, 200 or 300 g/kg dry matter [DM]) of mixed potato-wheat straw silage (PWSS) for alfalfa and concentrate on nutrient digestibility, feed intake, growth performance, microbial nitrogen supply (MNS) and blood parameters of fattening lambs (24 lambs, 25 ± 1.2 kg initial body weight) was assessed.
These processes are focused on the metabolic response of aquatic ecosystems to nutrient enrichment (enhancement of primary production and thereby organic carbon supply) and the microbial decomposition of organic matter and their effects on the gain or loss of alkalinity.
Biolog CLPPs showed prolonged changes in microbial structures due to compost supply and were observed over incubation time, as indicated by PCA analysis.
