Several technologies have been tested to reduce enteric methanogenesis, but very few successfully used in practical conditions for livestock. Furthermore, the consequences of reduced rumen methane production on animal performance and milk quality are poorly understood. The aim this work was investigate effect feeding bromochloromethane (BCM), a halogenated aliphatic hydrocarbon with potential antimethanogenic activity, dairy goats production, fermentation pattern, abundance major microbial...

The effects of forage type and forage:concentrate ratio (F:C) on apparent nutrient digestibility, ruminal fermentation, microbial growth were investigated in goats. A comparison between liquid (LAB) solid (SAB)-associated bacteria to estimate N flow (MNF) from urinary purine derivative excretion was also examined. Treatments a 2 x factorial arrangement (grass hay vs. alfalfa hay) high low F:C (70:30 30:70, respectively). Four ruminally cannulated goats fed, at maintenance intake, 4...

Three experiments were conducted in Granadina goats and Segureña wethers fed at maintenance level to evaluate the effect of including a mixture barley new by-product derived from olive oil extraction (two-stage dried cake) on ruminal degradation passage kinetics (Exp. 1), fermentation pattern protozoa population 2), urinary purine derivatives excretion 3). Polyethylene glycol was supplied animals effects tannins contained by-product. The experimental diets as follows: alfalfa hay plus...

The in vivo digestibility and the rates of degradation passage alfalfa hay (AH) vetch straw (VS) were compared three Granadina goats Segureña wethers fed at approximately maintenance level, using a change over design. nylon bag technique was used to estimate fractional rate feeds rumen. outflow particles determined with chromium as marker. No significant differences coefficients nutrients between animal species found. Nitrogen retention expressed both nitrogen intake digested lower (P <...

Nitrogen emissions from dairy cows can be readily decreased by lowering the dietary CP concentration. The main objective of this work was to test whether milk protein yield reduction associated with low N intakes could partially compensated for modifying carbohydrate composition (CHO). effects CHO on digestion, efficiency (milk N/N intake; MNE) and animal performance were studied in four Jersey fed 100% or 80% recommended requirements using a 4×4 Latin square design. Four iso-energetic diets...

This study was designed to analyze the chemical composition and in vitro rumen fermentation of eight seaweed species (Brown: Alaria esculenta, Laminaria digitata, Pelvetia canaliculata, Saccharina latissima; Red: Mastocarpus stellatus, Palmaria palmata Porphyra sp.; Green: Cladophora rupestris) collected Norway during spring autumn. Moreover, ruminal seventeen diets composed 1:1 oat hay:concentrate, without (control diet) or including seaweeds studied. The ash N contents were greater (p &lt;...

Abstract BACKGROUND: This work aimed to study the chemical composition, in vitro digestibility, ruminal degradability and intestinal digestibility of nutrients vine shoot (VS), grape marcs (GMG GMM), white (WL), red (RL) sherry (SL) wine lees marc plus (GML). The effect polyethylene glycol (PEG) on nutrient availability was also studied. RESULTS: By‐products had variable crude protein (CP) cell walls (from 44.8 203 from 122 741 g kg −1 dry matter (DM) for CP neutral detergent fibre (NDF)...

Two in vitro and one vivo experiments were conducted to investigate the effects of a selection plant compounds on rumen fermentation, microbial concentration methane emissions goats. Treatments were: control (no additive), carvacrol (CAR), cinnamaldehyde (CIN), eugenol (EUG), propyl propane thiosulfinate (PTS), thiosulfonate (PTSO), diallyl disulfide (DDS), mixture (40 : 60) PTS PTSO (PTS+PTSO), bromochloromethane (BCM) as positive with proven antimethanogenic effectiveness. Four doses (40,...

The objective of this study was to determine the variability in nutritive value for ruminants tomato pomace (TP) samples and analyze its effect on vitro fermentation when it included a high-concentrate diet. Twelve TP were obtained from two processing plants at weekly intervals analyzed chemical composition, rumen fermentation, intestinal digestibility. composition did not differ between only slight variations observed among sampling times. Tomato had low dry matter content (<300 g/kg), high...

Olives leaves, accrued during the processing of olive harvests for oil extraction, are poor in N, rich crude fat and ADF (1.19, 8.03 28.2 g/100 g DM, respectively), relatively low condensed tannins (11.1 mg/g DM). Three experiments were conducted a 2 × 3 (two animal species: goats vs. wethers; three experimental diets: leaves without or with polyethylene glycol supply supplemented barley faba beans) factorial design to evaluate ruminal degradation passage kinetics (Exp. 1), fermentation...

Context Ungulates have been widely introduced in multiple ecosystems throughout the world due to their value as food and for sport hunting. The identification of foraging preferences exotic native ungulates living sympatry is, therefore, becoming increasingly important order assess potential impacts animals on host ecosystem. Aims To describe species-specific strategies infer resource selection overlap between ungulates. Methods We compared trophic ecology three sympatric ungulate species a...

The effects of replacing 50% cereals-based concentrate with feed blocks (FB) including wastes tomato fruits (diet ACT), cucumber ACC), or barley grain ACB) on nutrient use, ruminal fermentation, microbial N flow to the duodenum, methane emissions, and abundances total bacteria methanogen were studied in goats. Four adult, dry, nonpregnant, rumen-fistulated Granadina goats (32.1 ± 5.52 kg BW) used 4 diets trials by using a × Latin square experimental design. Diets consisted alfalfa hay plus...

Study of the efficacy methanogenesis inhibitors in rumen has given inconsistent results, mainly due to poorly understood effects on key microbial groups involved pathways for methane (CH4) synthesis. The experiment described this report was designed assess effect propyl propane thiosulfinate (PTS), diallyl disulfide (DDS) and bromochloromethane (BCM) fermentation, production populations continuous culture fermenters. No total volatile fatty acids (VFA) were observed with PTS or DDS, but VFA...