191 Effect of Inclusion of Hempseed Meal on Rumen Papillae Morphology And Rumen Fermentation of Boer X Spanish Intact Male Goats

Abstract The objective of this study was to evaluate the effect inclusion increasing levels hempseed meal (HSM) on morphology rumen papillae and volatile fatty acids production in intact male goats. Boer x Spanish goats (n = 36), 0 to1 months age bodyweight 44.1 ± 3.8 kg, were randomly assigned one four experimental diets 9 goats/diet): 0% (control), 0%, 20%, 30% HSM included an as-fed basis fed ad-libitum for 60 days. Experimental formulated as total mixed ration (TMR), nutrient content each diet be iso-nitrogenous (18% crude protein) meet or exceed requirement breeding At end trial, humanely processed per USDA standards. Rumen fluid necropsy samples tissue from ventral sac collected, histological examination. Morphometric variables papillae; height width papillae, density (number papillae/cm2) recorded, absorptive surface area calculated. thickness stratum corneum (SC) granulosum (SG) measured slides tissue. analyzed (acetate, propionate, butyrate) concentration. Data using one-way ANOVA orthogonal contrast test equally spaced treatments R version 4.2.1. There no significant difference (P > 0.05) density, area, SC thickness, SG among feeding different diets. concentration propionic acid decreased linearly 0.01) with (12.90, 9.51, 8.12 7.34 mmol/L %,0 %, 20 % 30 HSM, respectively), whereas acetic butyric similar groups 0.05). These observed results indicate that at least up does not affect morphology, acetate butyrate