|STUDY OF MATERNAL AGGRESSIVENESS IN GOATS BEFORE AND AFTER WEANING|
|Paolo Cano1, Paola Zumaya2, Rocio Ibarra2, Francisco González2, Rosalba Soto2. 1Facultad de Estudios Superiores Cuautitlán UNAM Centro de Enseñanza Agropecuaria, Cuautitlán, México, Mexico; 2Facultad de Estudios Superiores Cuautitlán UNAM Unidad de Investigación Multidisciplinaria, Cuautitlán, México, Mexico
The present work evaluated the aggressive behaviors of the mother towards her offspring before and after weaning. 50 goats of the Alpine race with 7 (n = 10), 15 (n = 10), 30 (n = 10), 45 (n = 10) and 90 (n = 10) postpartum days. For 5 minutes, the experimental subject and its offspring were placed inside a 2x2m pen and outside of the same to the conspecifics. The frequencies of olfactory recognition, licking, vocalizations, pitched bleats high and low, kicks, threats and head-butt their offspring were evaluated. The frequency of threats and head-butt from the mother to her offspring showed significant differences in the groups of 7 and 90 days postpartum (1.0 ± 2.8 vs 2.0 ± 3.8, 1.0 ± 3.6 vs 2.0 ± 4.2, P < 0.01, U Mann-Whitney). In the goat, the maternal aggressiveness was presented in the groups with the shortest and longest time of birth of the offspring, that is, at the beginning and in the final part of the maternity.