TY - GEN
T1 - Predicting empty body weight in Pelibuey and Katahdin suckling lambs
AU - Chay-Canul, A J
AU - Salazar-Cuytun, E R
AU - Ojeda Robertos, N F
AU - Garcia-Herrera, R A
AU - Chizzotti, M L
AU - Almeida, A K
PY - 2019
Y1 - 2019
N2 - The objective of the present study was to evaluate the relationship between body weight (BW) at slaughter (SBW) and empty body weight (EBW) and develop equations to estimate EBW in suckling hair lambs from different genotypes (Pelibuey and Katahdin), sexes (males and females) and litter sizes (single or double). The experiment was conducted with 66 lambs, 39 Pelibuey and 27 Katahdin, 37 males and 29 females; 30 of single birth and 36 of double birth. The effects of the genotype, sex and litter size were tested. The correlation coefficient between the SBW and EBW was 0.98 (P<0.001). It was observed that genotype and sex had no effect (P>0.05) on the relationship of SBW and EBW; however, the litter size did have influence (P<0.05) SBW and EBW relationship. The slopes of the equations were similar (P>0.001). Finally, an equation without intercept was proposed: EBW = 0.89 (±0.003**) × SBW (R²=0.98, MSE=0.119, RSD=0.345 and n=66). The present study indicates weight of gastrointestinal content was 11% of SBW of suckling hair lambs. The genotype, sex and litter size had no effect on this proportion.
AB - The objective of the present study was to evaluate the relationship between body weight (BW) at slaughter (SBW) and empty body weight (EBW) and develop equations to estimate EBW in suckling hair lambs from different genotypes (Pelibuey and Katahdin), sexes (males and females) and litter sizes (single or double). The experiment was conducted with 66 lambs, 39 Pelibuey and 27 Katahdin, 37 males and 29 females; 30 of single birth and 36 of double birth. The effects of the genotype, sex and litter size were tested. The correlation coefficient between the SBW and EBW was 0.98 (P<0.001). It was observed that genotype and sex had no effect (P>0.05) on the relationship of SBW and EBW; however, the litter size did have influence (P<0.05) SBW and EBW relationship. The slopes of the equations were similar (P>0.001). Finally, an equation without intercept was proposed: EBW = 0.89 (±0.003**) × SBW (R²=0.98, MSE=0.119, RSD=0.345 and n=66). The present study indicates weight of gastrointestinal content was 11% of SBW of suckling hair lambs. The genotype, sex and litter size had no effect on this proportion.
UR - http://www.WageningenAcademic.com/eaap138
UR - https://www.scopus.com/pages/publications/85113830285
U2 - 10.3920/978-90-8686-891-9_158
DO - 10.3920/978-90-8686-891-9_158
M3 - Conference contribution
SN - 9789086863402
SN - 9789086868919
T3 - EAAP publication
SP - 489
EP - 490
BT - Energy and protein metabolism and nutrition
A2 - Luiz Chizzotti, Mario
PB - Wageningen Academic Publishers
CY - Wageningen, Netherlands
T2 - ISEP 2012: 6th EAAP International Symposium on Energy and Protein Metabolism and Nutrition
Y2 - 9 September 2012 through 12 September 2012
ER -