Effect of dietary supplementation with treated amaranth seeds on fermentation parameters in an artificial rumen

Abstract

ABSTRACT:The rumen simulating technique (RUSITEC) was used to evaluate the effect of dietary inclusion of amaranth seeds on the rumen fermentation and the concentration of fatty acids (FA) in fermentation fluid. Four fermentation vessels of the RUSITEC were used. The control diet (C) consisted of 70% meadow hay and 30% barley meal, whereas 10% of barley meal was replaced by milled (A mill ), mechanically ground (A gr ), and ground after heating in a microwave amaranth seeds (A heat+gr ) in other experimental vessels, respectively. All diets were isonitrogenous (11% of crude protein). With degradability of dry matter (DM) and acid-detergent fibre (ADF) not affected (P > 0.05), degradability of neutral detergent fibre (NDF) was significantly decreased by the inclusion of A mill (P < 0.001) and A heat+gr (P < 0.05). Heating, compared to milling, decreased degradation of crude protein (CP) and addition of amaranth seeds generally increased production of microbial nitrogen. Production of fermentation gasses, methane, and total volatile fatty acids (VFA) was not affected by changes in composition of diets. Addition of amaranth seeds in a milled form (A mill ) caused a significant decrease in concentrations of acetate and propionate and growth in concentrations of butyrate, iso-valerate, and caproate. No effect (P > 0.05), compared to C, was found on the percentage of saturated or unsaturated FA, but changes in concentrations of some FA were observed. An absence of any detrimental effects on ruminal fermentation patterns indicated that grain amaranth seeds can partially substitute for the barley in ruminant nutrition.

Degradation parameters of amaranth, barley and quinoa in alpacas fed grass hay

“…The pH mean AM was slightly lower (p < 0.05) than GH, but not enough to cause disruption and was similar to values shown by Kubelková et al. (). In llamas fed GH, Dulphy et al.…”

“…Amaranth ( Amaranthus sp.) and quinoa ( Chenopodium quinoa ) are both pseudo‐grains from the South American region (Rosero et al., ; Kubelková et al., ) where the grain is used primarily for human food and the plant stocks used for animal feed (Rosero et al., ; Kubelková et al., ; Robinson et al., ). They are classified as pseudo‐grains because they are not in the Gramineae family.…”

The influence of feed supplementation with linseed oil and linseed extrudate on fatty acid profile in goat yoghurt drinks

“…The FA analysis including lipid extraction was carried out as described by Kubelková et al (2013). Results are presented in Table 1.…”

Response of Quinoa (Chenopodium quinoa Willd) Plant to Nitrogen Fertilization and Irrigation by Saline Water

“…In several countries, quinoa plant not only is used as super food for humankind but also used as forage for livestock and poultry. In South American region, the grain of quinoa is used primarily for human food and the plant stocks used for animal feed (Rosero et al, 2010;Kubelkov et al, 2013;Robinson et al, 2013 a and b). As feed, quinoa seeds were beneficiary diet when introduced to broilers (Jacobsen et al, 1997).…”