ABSTRACT In this study, we reported the evaluation of ruminal parameters and the rate and degree of degradation of biogenic amines (BA) in vitro, using ruminal fluid from sheep fed two different diets (meadow hay and silage of Medicago sativa L.). Herein, the Charolais sheep breed with a ruminal cannula was used to gather samples. Multiple rumen parameters were evaluated after 10 days of the feeding period. Samples were processed using fermenters inoculated by BA (histamine, tyramine, putrescine, cadaverine, spermine, […]

The objective of this study was to evaluate performance and biometrics of lambs fed different sources of forage. Twenty-four six-month-old Santa Inês female lambs were randomly allocated to four experimental diets and housed in individual stalls. They weighed on average 26.35±0.20 kg. The diets were coast cross hay (HAY), cassava hay (CAS), dehydrated by-product of pea crop (PEA) and saccharin (SAC). The diets were formulated with the same amount of protein and energy with fixed levels of forage (60%) and […]

This text revised some papers in literature about characteristics and use of conserved forages for horse feeding, considering animal behavior and outstanding the need of programs that could integrate the current knowledge of use, physiology, management and animal nutrition. A basic and critical nutritional condition for equine management is the availability of high quality forage for use as pasture or conserved as hay or silage. Most professional horse production systems adopt hay for animal feeding and this is why most […]

Seven sheep fed S. guianensis hay were used to evaluate ruminal amino acid degradability, nitrogen balance and rumen volatile fatty acid (VFA) concentrations. Nylon bags technique was used for determination of the in situ degradabilities of amino acids. Bags were collected at 6, 24 and 48 hours after insertion. Duodenum and feces samples were used to determine amoniacal-N and non-amoniacal-N. To determine ruminal VFA concentrations, samples of 80 mL were collected immediately before feeding and 2, 4, 6 and 8 […]

The objective of this experiment was to study the influence of six haying and four storage periods on the chemical composition and mold growth of alfafa hay. A 6×4 factorial arrangement was used in a completely randomized design, with five replicates for chemical analyses and four replicates for mold determinations. The haying methods were: T1- (shade, S) shade-drying; the forage was carried to a barn immediately after cutting and spreaded (S); T2 and T3: the material was sun-dried until a […]

The objective of this work was to evaluate the feeding behavior, dry matter intake, and performance in goats fed hays of ramie (Boehemeria nivea G.), soybean (Neonotonia wightii) and elephant grass (Pennisetum purpureum Schum., cv. napier), offered to allow an excess of 30 or 60%, above the intake measured in the previous day. Thirty-six goats were allotted to a completely randomized design with six treatments in a factorial arrangement of 3 x 2 (hay and level of offer). The mean […]

This research was carried out to evaluate the chemical composition of cipó-de-escada (Bauhinia glabra Jacq) hay at 42, 56, 70, 84 and 98 days of growth after uniformity cut. A completely randomized experimental design, with five treatments and four replicates, was used. The hay was obtained from an area of native pasture lowed and cleaned of 7200 m2, which were subdivided in plots of 360 m2. There were no differences for the content of dry matter (DM), organic matter (OM), […]

This work was conducted aiming to evaluate the effect of different forage levels in the diet on the average daily dry matter intake (DMI), average weight gain (AWG), feed:gain ratio and carcass yield. Thirty-six pure Holstein bull calves, 60 days old with initial average live weight (LW) of 78 kg, were allotted in a completely randomized experimental design. The animals were ad libitum fed with diets contained 10, 25, 40, and 55% of forage, on the DM basis, using chopped […]