TY - JOUR
T1 - Residual feed intake and enteric methane production in growing Pelibuey sheep
AU - Arce-Recinos, Carlos
AU - Ojeda-Robertos, Nadia Florencia
AU - Garcia-Herrera, fricardo Alfonso
AU - Ramos-Juarez, Jesús Alberto
AU - Piñeiro-Vázquez, Ángel Trinidad
AU - Canul-Solis, Jorge Rodolfo
AU - Castillo-Sanchez, Luis Enrique
AU - Cas-Lugoanova, Fernando
AU - Vargas Bello Perez, Einar
AU - Chay-Canul, Alfonso Juventino
PY - 2022
Y1 - 2022
N2 - This study was carried out to evaluate the residual feed intake (RFI), volatile fatty acid (VFA) production and enteric methane (CH4) from growing Pelibuey sheep. In this case, 12 non-castrated Pelibuey with an initial average live weight (LW) of 21.17 ± 3.87 kg and an age of 3 months, were housed in individual pens and fed a basal diet with 16% of crude protein and 11 MJ ME for 45 days. Dry matter intake (DMI) was measured and the daily weight gain (DWG) was calculated using a linear regression between the LW and experimental period. Mean metabolic live weight (LW0.75) was calculated. RFI was determined by linear regression with DWG and LW0.75 as independent variables. Lambs were classified as low, medium, and high RFI. Feed efficiency was determined as DWG/DMI. For determining rumen pH, ammonia nitrogen concentration NH3-N), and VFA, ruminal fluid was obtained using an esophageal probe on day 40. Feed intake of low RFI lambs was approximately 16% lower (p < 0.05) while growth rate was not significantly different. Their average energy loss, expressed as CH4 production per kilogram of metabolic weight, was 17% lower (p < 0.05).
AB - This study was carried out to evaluate the residual feed intake (RFI), volatile fatty acid (VFA) production and enteric methane (CH4) from growing Pelibuey sheep. In this case, 12 non-castrated Pelibuey with an initial average live weight (LW) of 21.17 ± 3.87 kg and an age of 3 months, were housed in individual pens and fed a basal diet with 16% of crude protein and 11 MJ ME for 45 days. Dry matter intake (DMI) was measured and the daily weight gain (DWG) was calculated using a linear regression between the LW and experimental period. Mean metabolic live weight (LW0.75) was calculated. RFI was determined by linear regression with DWG and LW0.75 as independent variables. Lambs were classified as low, medium, and high RFI. Feed efficiency was determined as DWG/DMI. For determining rumen pH, ammonia nitrogen concentration NH3-N), and VFA, ruminal fluid was obtained using an esophageal probe on day 40. Feed intake of low RFI lambs was approximately 16% lower (p < 0.05) while growth rate was not significantly different. Their average energy loss, expressed as CH4 production per kilogram of metabolic weight, was 17% lower (p < 0.05).
U2 - 10.3390/ani12050572
DO - 10.3390/ani12050572
M3 - Journal article
C2 - 35268141
VL - 12
SP - 1
EP - 8
JO - Animals
JF - Animals
SN - 2076-2615
IS - 5
M1 - 572
ER -