The objective of this study was to evaluate ingredients and diets containing increasing levels of crambe cake protein replacing soybean meal protein. with in vitro ruminal fermentation parameters using a gas production technique. Diets were formulated for feedlot lambs and contained different levels of crambe cake protein (0. 250. https://www.countryscenesaddleryandpetsuppliers.shop/product-category/horse-fly-veils/