TY - JOUR
T1 - Influence of season on chemical composition, intake, kinetic, digestibility and ruminal fermentation of diet selected by steers grazing
AU - Reyes Estrada, O.
AU - Murillo Ortiz, M.
AU - Herrera Torres, E.
AU - Gurrola Reyes, J.
AU - Juarez Reyes, A.
PY - 2010
Y1 - 2010
N2 - We used four ruminally cannulated steers (350±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 (NH3N) 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<0.05). The Crude Protein (CP) and NH3N concentration were higher in the rain season (p<0.01). The content of NDF was different in seasons (p<0.01). Similar, acetate, propionate and butyrate concentrations were different (p<0.01). Changes in chemical composition, intake, kinetic, digestibility and ruminal fermentation observed in this study appeared to be related to season.
AB - We used four ruminally cannulated steers (350±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 (NH3N) 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<0.05). The Crude Protein (CP) and NH3N concentration were higher in the rain season (p<0.01). The content of NDF was different in seasons (p<0.01). Similar, acetate, propionate and butyrate concentrations were different (p<0.01). Changes in chemical composition, intake, kinetic, digestibility and ruminal fermentation observed in this study appeared to be related to season.
KW - Bovines
KW - Diet quality
KW - Grazing
KW - Intake
KW - Mexico
KW - Ruminal fermentation
UR - http://www.scopus.com/inward/record.url?scp=78649822075&partnerID=8YFLogxK
U2 - 10.3923/javaa.2010.2969.2972
DO - 10.3923/javaa.2010.2969.2972
M3 - Artículo
SN - 1680-5593
VL - 9
SP - 2969
EP - 2972
JO - Journal of Animal and Veterinary Advances
JF - Journal of Animal and Veterinary Advances
IS - 23
ER -