Pine Needle Consumption by Cattle during Winter in South Dakota

James A. Pfister, Kip E. Panter, Dale R. Gardner
1998 Journal of range management  
Pregnant cattle that consume ponderosa pine (Pinus ponderosu Lawson) needles often abort.
doi:10.2307/4003375 fatcat:kkndqg3axbg4bgmh2q2hixo6gy