Defensividade de abelhas Apis mellifera L. africanizadas / Defensivity of Apis mellifera L. africanized bees

As abelhas Apis mellifera africanizadas são caracterizadas pela sua alta defensividade, característica importante, pois promove a defesa da colônia contra o ataque de saqueadores potenciais, uma vez que a colônia contém reservas de alimento e crias. A defensividade é influenciada por fatores genéticos principalmente a raça e espécie, e fatores ambientais como a temperatura. O estudo desse comportamento presente nas abelhas é fundamental, como fermenta na prevenção de acidentes e para tomada de decisões sobre qual manejo será adotado no apiário. Objetivou-se com esta revisão o estudo sobre os aspectos, que podem influenciar no comportamento defensivo de abelhas Apis mellifera africanizadas.(AU)

Africanized Apis mellifera bees are characterized by their high defensiveness, an important characteristic, as it promotes the colony's defense against the attack of potential looters, since the colony contains food reserves and pups. Defensiveness is influenced by genetic factors mainly race and species, and environmental factors such as temperature. The study of this behavior in bees is fundamental, as it ferments in the prevention of accidents and to make decisions about which management will be adopted in the apiary. The objective of this review was to study the aspects that may influence the defensive behavior of African honeybee Apis mellifera.(AU)

Defensividade de abelhas Apis mellifera L. africanizadas / Defensivity of Apis mellifera L. africanized bees

As abelhas Apis mellifera africanizadas são caracterizadas pela sua alta defensividade, característica importante, pois promove a defesa da colônia contra o ataque de saqueadores potenciais, uma vez que a colônia contém reservas de alimento e crias. A defensividade é influenciada por fatores genéticos principalmente a raça e espécie, e fatores ambientais como a temperatura. O estudo desse comportamento presente nas abelhas é fundamental, como fermenta na prevenção de acidentes e para tomada de decisões sobre qual manejo será adotado no apiário. Objetivou-se com esta revisão o estudo sobre os aspectos, que podem influenciar no comportamento defensivo de abelhas Apis mellifera africanizadas.

Africanized Apis mellifera bees are characterized by their high defensiveness, an important characteristic, as it promotes the colony's defense against the attack of potential looters, since the colony contains food reserves and pups. Defensiveness is influenced by genetic factors mainly race and species, and environmental factors such as temperature. The study of this behavior in bees is fundamental, as it ferments in the prevention of accidents and to make decisions about which management will be adopted in the apiary. The objective of this review was to study the aspects that may influence the defensive behavior of African honeybee Apis mellifera.

Feeding behavior of Santa Inês sheep in pastures of Cynodon dactylon and Andropogon gayanus

The objective of this study was to compare the behavior of sheep in different pastures, checking for possible differences in time spent grazing, leisure, and the number of bites of animals. 10 sheep Santa Inês were used, at the age of two years, with an average weight of 25.25 ± 2.65 kg. The experimental design was completely randomized with two treatments (Andropogon gayanus pastures and Cynodon dactylon cv. Vaquero) and five replicates per treatment. The trial lasted five days. Two evaluations were performed with duration of 24 hours each, for a day and the average of the two assessments was used in the statistical analysis. It may be noted that as the number of bits, the highest peak occurred in the early hours of the morning (22.16 bites per minute). Daily grazing time was higher (P 0.05) for grazing Cynodon dactylon cv. Vaquero (14.76 hours). For the time in daily idleness was observed the highest values for the pasture of Andropogon gayanus (12.06 hours). We conclude that the sheep had higher acceptability and grazing activity in Cynodon dacytlon cv. Vaquero pasture.(AU)

Feeding behavior of Santa Inês sheep in pastures of Cynodon dactylon and Andropogon gayanus

The objective of this study was to compare the behavior of sheep in different pastures, checking for possible differences in time spent grazing, leisure, and the number of bites of animals. 10 sheep Santa Inês were used, at the age of two years, with an average weight of 25.25 ± 2.65 kg. The experimental design was completely randomized with two treatments (Andropogon gayanus pastures and Cynodon dactylon cv. Vaquero) and five replicates per treatment. The trial lasted five days. Two evaluations were performed with duration of 24 hours each, for a day and the average of the two assessments was used in the statistical analysis. It may be noted that as the number of bits, the highest peak occurred in the early hours of the morning (22.16 bites per minute). Daily grazing time was higher (P 0.05) for grazing Cynodon dactylon cv. Vaquero (14.76 hours). For the time in daily idleness was observed the highest values for the pasture of Andropogon gayanus (12.06 hours). We conclude that the sheep had higher acceptability and grazing activity in Cynodon dacytlon cv. Vaquero pasture.