TY - JA AU - Boever,J.L.de AU - Boucque,C.V. AU - Brabander,D.L.de AU - Smet,A.M.de AU - Vanacker,J.M. TI - Evaluation of physical structure. 2. Maize silage SN - 0022-0302 U1 - 94-093226 PY - 1993/// KW - Animal feeding KW - Artiodactyla KW - Behaviour KW - Bovidae KW - Bovinae KW - Cattle KW - Cereals KW - AGROVOC KW - Developmental stages KW - Digestion KW - Dimensions KW - Domestic animals KW - Feed composition KW - Feeding habits KW - Feeds KW - Fermented products KW - Livestock KW - Mammals KW - Physiological functions KW - Plant products KW - Processed products KW - Proximate composition KW - Ruminants KW - Useful animals N2 - Physical structure of 14 maize silages was investigated; chewing activity was measured with eight cows over 4 d. Silages were harvested from the milk dough dent to the hard dough dent stages of maturity and chopped at lengths of 4 to 16 mm. Silages were fed for ad libitum intake and were supplemented with 2 kg of soybean meal. Eating, ruminating, and total chewing indexes varied from 16.5 to 25.3, 34.3 to 50.2, and 50.8 to 75.5 min/kg of silage DMI, respectively. Ruminating and total chewing indexes decreased as maturity stage increased. Eating index was not significantly affected by chopping to 4 to 8 mm lengths but was higher for the T2 - Journal of Dairy Science ER -