A study was conducted to evaluate the effects of chitosan on enteric methane (CH4) and total tract nutrient digestibility of beef heifers consuming either a high-concentrate (HC; 85% concentrate) or a low-concentrate (LC; 36% concentrate) diet. Heifers were provided their respective diets ad libitum along with one of three dietary inclusion rates of chitosan: 1) CTRL=0.0% of chitosan in the die...

Twenty-four multiparous lactating Holstein cows were blocked by days in milk and assigned to treatment sequences in a replicated 4x4 Latin square with 21-d periods. The four diets, formulated from alfalfa silage plus a concentrate mix based on ground high moisture ear corn, contained [dry matter (DM) basis]: 1) 20% concentrate, 80% alfalfa silage (24% nonfiber carbohydrates; NFC), 2) 35% concen...

Producing organic fish diets requires that the use of both fishmeal and fish oil (FO) be minimized and replaced by sustainable, organic sources. The purpose of the present study was to replace FO with organic oils and evaluate the effects on feed intake, feed conversion ratio (FCR), daily specific growth rate (SGR) and nutrient digestibility in diets in which fishmeal protein was partly substit...

Relationships between ammonia levels in rumen liquor and dietary nitrogen (N) intake, the N concentration in the diet, blood urea concentration and urinary N excretion were examined in sheep fed near ad libitum on diets varying widely in chemical composition and digestibility. Rumen ammonia was positively correlated with all measures but the best relationship was with the ratio of N to digestib...

The purpose of this research was to determine the influence Myristic acid and source condensed tannin on corn straw basedcomplete feed nutrient content in vitro digestibility. method which used experiment randomized block design with four treatments three replications. treatment consisted T0 complete (40% + 60% concentrate), T1 concentrate myristic 30 g/Kg DM), T2 50% calliandra leaf meal 10%/K...

The objective of this study was to investigate the effects of adding different levels of molasses (1-5%) on the silage quality, in vitro methane production and in vitro organic matter digestibility (IVOMD) of pistachio (Pistachio vera) by-product and wheat straw mixture silages. For this purpose, silages were prepared with pistachio by-product (85%) and wheat straw (15%) without molasses (contr...

The influence of monensin level (0, 6.1, 12.2, 18.3 and 36.6 ppm) on diet fiber digestibility, microbial protein synthesis and ruminal escape of dietary protein was evaluated in two steer metabolism trials. A growth trial was conducted to study possible interactions of forage quality and monensin level. In metabolism trial 1, four ruminal-cannulated steers were assigned to four monensin levels ...

Several studies have reported data on comparisons between two methods: the total collection of feces and the internal markers method. The aim of this study was to assess the apparent digestibility of two concentrates and to compare the apparent digestion coefficients using the total collection of feces and acid-insoluble ash (AIA) as the internal marker method. In 2009, six adult geldings aged ...