TY  - JOUR
T1  - Influence of Season on Chemical Composition, Intake, Kinetic, Digestibility and Ruminal Fermentation of Diet Selected by Steers Grazing
AU - Estrada, O. Reyes AU - Ortiz, M. Murillo AU - Torres, E. Herrera AU - Reyes, J.N. Gurrola AU - Reyes, A.S. Juarez 
JO  - Journal of Animal and Veterinary Advances
VL  - 9
IS  - 23
SP  - 2969
EP  - 2972
PY  - 2010
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2010.2969.2972
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2010.2969.2972
KW  - Intake
KW  -diet quality
KW  -ruminal fermentation
KW  -bovines
KW  -grazing
KW  -Mexico
AB  - We used four ruminally cannulated steers (350&plusmn;3 kg) to evaluate the effect of season on chemical composition, intake, kinetic, digestibility and ruminal fermentation of diet selected during grazing. Data were analyzed as a randomized complete block design with months as the block and season of year as treatment. Time-sequence data than pH, ammonia Nitrogen (NH<SUB>3</SUB>N) and Volatile Fatty Acids (VFA) were analyzed as repeated measures within a randomized block design. The Dry Matter Intake (DMI), Organic Matter Intake (OMI), Digestible Energy (DE), Metabolizable Energy (ME) and passage rate (Kp) of diet were affected by season (p&lt;0.05). The Crude Protein (CP) and NH<SUB>3</SUB>N concentration were higher in the rain season (p&lt;0.01). The content of NDF was different in seasons (p&lt;0.01). Similar, acetate, propionate and butyrate concentrations were different (p&lt;0.01). Changes in chemical composition, intake, kinetic, digestibility and ruminal fermentation observed in this study appeared to be related to season.
ER  -