RESUMO
p>This study aimed to evaluate the physiological parameters and performance of sheep Santa Inês and Dorperlambs ½-SantaInes in summer and winter seasons. 160 Santa Inês sheep and 189 ½ Dorper lambs were used - Santa Inês completely randomized in two treatments, summer: 80 sheep and 92 lambs and winter: 80 sheep and 97 lambs.Was recorded environmental the environmental parameters of air temperature (Ta°C), relative humidity (% RH), wind speed (Vvms- 1) and black globe temperature (Tg°C) and physiological parameters of rectal temperature (Tr°C), respiratory rate (RR mov.min-1) and heart rate (HR beat.min - 1). The body condition of the ewes was measured at birth. In the final third of gestation there was a significant effect P 0.05) for TR, FR and HR on sheep, where in summer the values were 40.63°C, 102.58 (mov.min-1) and 128,34 (beat.min-1) with 46 ICT, and winter was 38.34°C , 35.71 (mov.min-1), 77.96 (beat.min-1) with ICT of 14. The values of TR, RR and HR at birth and weaning were also significant between the summer and winter seasons. Differences were observed (P 0.05) for TR, RR and HR of lambs at birth and weaning between summer and winter. The weight at birth (4.51 ± 2.86) and weaning (16.91 ± 3.91) were higher for those born in the summer. During the summer Santa Inês ewes were superior in body condition score, favoring births of heavier lambs and consequently higher weaning weight with higher rate of survival than those found in winter. /p>
p>Objetivou-se avaliar os parâmetros fisiológicos e o desempenho de ovelhas da raça Santa Inês e cordeiros ½ Dorper - Santa Inês nas estações verão e inverno. Foram utilizadas 160 ovelhas da raça Santa Inês e 189 cordeiros ½ Dorper - Santa Inês em delineamento inteiramente casualizado distribuídas em dois tratamentos, verão: 80 ovelhas e 92 cordeiros e no inverno: 80 ovelhas e 97 cordeiros. Registrou-se os parâmetros ambientais, temperatura do ar (Ta sup>o /sup>C), umidade relativa (UR%), velocidade do vento (Vv m.s sup>-1 /sup>) e temperatura do globo negro (Tg sup>o /sup>C) e parâmetros fisiológicos, temperatura retal (TR sup>o /sup>C), frequência respiratória (FR mov.min sup>-1 /sup>) e frequência cardíaca (FC bat.min sup>-1 /sup>). A condição corporal das ovelhas foi aferida ao parto. No terço final de gestação verificou-se efeito significativo (P 0,05) para TR, FR e FC nas ovelhas, em que no verão os valores foram, respectivamente, 40,63 sup>o /sup>C, 102,58 (mov.min sup>-1 /sup>) e 128,34 (bat.min sup>-1 /sup>) com ICT 46, e no inverno foi de 38,34 sup>o /sup>C, 35,71 (mov.min sup>-1 /sup>), 77,96( bat.min sup>-1 /sup>) com ICT de 14. Os valores de TR, FR e FC ao parto e ao desmame também foram significativas entre as estações verão e inverno. Foram verificadas diferenças (P 0,05) para a TR, FR e FC dos cordeiros ao nascimento e ao desmame entre o verão e inverno. O peso ao nascer (4,51±2,86) e ao desmame (16,91±3,91) foram superiores para os cordeiros nascidos no verão. Durante o verão, ovelhas da raça Santa Inês foram superiores em escore de condição corporal, favorecendo nascimentos de cordeiros mais pesados e consequentemente peso ao desmame superior, com taxa de sobrevivência acima da encontrada no inverno. /p>
RESUMO
p>This study aimed to evaluate the physiological parameters and performance of sheep Santa Inês and Dorperlambs ½-SantaInes in summer and winter seasons. 160 Santa Inês sheep and 189 ½ Dorper lambs were used - Santa Inês completely randomized in two treatments, summer: 80 sheep and 92 lambs and winter: 80 sheep and 97 lambs.Was recorded environmental the environmental parameters of air temperature (Ta°C), relative humidity (% RH), wind speed (Vvms- 1) and black globe temperature (Tg°C) and physiological parameters of rectal temperature (Tr°C), respiratory rate (RR mov.min-1) and heart rate (HR beat.min - 1). The body condition of the ewes was measured at birth. In the final third of gestation there was a significant effect P 0.05) for TR, FR and HR on sheep, where in summer the values were 40.63°C, 102.58 (mov.min-1) and 128,34 (beat.min-1) with 46 ICT, and winter was 38.34°C , 35.71 (mov.min-1), 77.96 (beat.min-1) with ICT of 14. The values of TR, RR and HR at birth and weaning were also significant between the summer and winter seasons. Differences were observed (P 0.05) for TR, RR and HR of lambs at birth and weaning between summer and winter. The weight at birth (4.51 ± 2.86) and weaning (16.91 ± 3.91) were higher for those born in the summer. During the summer Santa Inês ewes were superior in body condition score, favoring births of heavier lambs and consequently higher weaning weight with higher rate of survival than those found in winter. /p>
p>Objetivou-se avaliar os parâmetros fisiológicos e o desempenho de ovelhas da raça Santa Inês e cordeiros ½ Dorper - Santa Inês nas estações verão e inverno. Foram utilizadas 160 ovelhas da raça Santa Inês e 189 cordeiros ½ Dorper - Santa Inês em delineamento inteiramente casualizado distribuídas em dois tratamentos, verão: 80 ovelhas e 92 cordeiros e no inverno: 80 ovelhas e 97 cordeiros. Registrou-se os parâmetros ambientais, temperatura do ar (Ta sup>o /sup>C), umidade relativa (UR%), velocidade do vento (Vv m.s sup>-1 /sup>) e temperatura do globo negro (Tg sup>o /sup>C) e parâmetros fisiológicos, temperatura retal (TR sup>o /sup>C), frequência respiratória (FR mov.min sup>-1 /sup>) e frequência cardíaca (FC bat.min sup>-1 /sup>). A condição corporal das ovelhas foi aferida ao parto. No terço final de gestação verificou-se efeito significativo (P 0,05) para TR, FR e FC nas ovelhas, em que no verão os valores foram, respectivamente, 40,63 sup>o /sup>C, 102,58 (mov.min sup>-1 /sup>) e 128,34 (bat.min sup>-1 /sup>) com ICT 46, e no inverno foi de 38,34 sup>o /sup>C, 35,71 (mov.min sup>-1 /sup>), 77,96( bat.min sup>-1 /sup>) com ICT de 14. Os valores de TR, FR e FC ao parto e ao desmame também foram significativas entre as estações verão e inverno. Foram verificadas diferenças (P 0,05) para a TR, FR e FC dos cordeiros ao nascimento e ao desmame entre o verão e inverno. O peso ao nascer (4,51±2,86) e ao desmame (16,91±3,91) foram superiores para os cordeiros nascidos no verão. Durante o verão, ovelhas da raça Santa Inês foram superiores em escore de condição corporal, favorecendo nascimentos de cordeiros mais pesados e consequentemente peso ao desmame superior, com taxa de sobrevivência acima da encontrada no inverno. /p>
RESUMO
It was evaluated the intake behavior of Nellore steers in system without shade (WS), and silvopastoral system (SP) maintained in star grass (Cynodon plectostachyus) in summer and winter. Twenty-four Nellore steers were used (12 in each system), mean age 18 months and weight of 294.5 kg. The design was completely randomized with two seasons, two treatments, 24 hours and 12 repetitions. The observations were conducted in three days, for 24 hours, with an interval of 15 minutes, with effect of the hour on the grazing behavior (GRAZ) with a maximum of 52.1% and lying ruminating (LYRUM) with a minimum of 12.3%, both at 14h. The lying idle (LYIDL) was influenced by hour with a minimum of 11,6%at 14h, and by season, with 23.9% in summer, and 13.9%, in winter. However, the standing ruminating (STRUM), without effect of hour, was affected by the interaction of season x system in summer (9.43%) and (6.19%), and winter (4.36%) and (8.27%), respectively, for SP and WS. Standing idle (OCEMP) was influenced by hour, with maximum 15.8% at 14h, and an interaction of system x season, in summer (20.10%) and (8.82%); and winter (9.05%) and (8.44%), respectively, for SP and WS. The SP system has changed the environment that affected the animal intake behavior.
It was evaluated the intake behavior of Nellore steers in system without shade (WS), and silvopastoral system (SP) maintained in star grass (Cynodon plectostachyus) in summer and winter. Twenty-four Nellore steers were used (12 in each system), mean age 18 months and weight of 294.5 kg. The design was completely randomized with two seasons, two treatments, 24 hours and 12 repetitions. The observations were conducted in three days, for 24 hours, with an interval of 15 minutes, with effect of the hour on the grazing behavior (GRAZ) with a maximum of 52.1% and lying ruminating (LYRUM) with a minimum of 12.3%, both at 14h. The lying idle (LYIDL) was influenced by hour with a minimum of 11,6%at 14h, and by season, with 23.9% in summer, and 13.9%, in winter. However, the standing ruminating (STRUM), without effect of hour, was affected by the interaction of season x system in summer (9.43%) and (6.19%), and winter (4.36%) and (8.27%), respectively, for SP and WS. Standing idle (OCEMP) was influenced by hour, with maximum 15.8% at 14h, and an interaction of system x season, in summer (20.10%) and (8.82%); and winter (9.05%) and (8.44%), respectively, for SP and WS. The SP system has changed the environment that affected the animal intake behavior.
RESUMO
It was evaluated the intake behavior of Nellore steers in system without shade (WS), and silvopastoral system (SP) maintained in star grass (Cynodon plectostachyus) in summer and winter. Twenty-four Nellore steers were used (12 in each system), mean age 18 months and weight of 294.5 kg. The design was completely randomized with two seasons, two treatments, 24 hours and 12 repetitions. The observations were conducted in three days, for 24 hours, with an interval of 15 minutes, with effect of the hour on the grazing behavior (GRAZ) with a maximum of 52.1% and lying ruminating (LYRUM) with a minimum of 12.3%, both at 14h. The lying idle (LYIDL) was influenced by hour with a minimum of 11,6%at 14h, and by season, with 23.9% in summer, and 13.9%, in winter. However, the standing ruminating (STRUM), without effect of hour, was affected by the interaction of season x system in summer (9.43%) and (6.19%), and winter (4.36%) and (8.27%), respectively, for SP and WS. Standing idle (OCEMP) was influenced by hour, with maximum 15.8% at 14h, and an interaction of system x season, in summer (20.10%) and (8.82%); and winter (9.05%) and (8.44%), respectively, for SP and WS. The SP system has changed the environment that affected the animal intake behavior.
It was evaluated the intake behavior of Nellore steers in system without shade (WS), and silvopastoral system (SP) maintained in star grass (Cynodon plectostachyus) in summer and winter. Twenty-four Nellore steers were used (12 in each system), mean age 18 months and weight of 294.5 kg. The design was completely randomized with two seasons, two treatments, 24 hours and 12 repetitions. The observations were conducted in three days, for 24 hours, with an interval of 15 minutes, with effect of the hour on the grazing behavior (GRAZ) with a maximum of 52.1% and lying ruminating (LYRUM) with a minimum of 12.3%, both at 14h. The lying idle (LYIDL) was influenced by hour with a minimum of 11,6%at 14h, and by season, with 23.9% in summer, and 13.9%, in winter. However, the standing ruminating (STRUM), without effect of hour, was affected by the interaction of season x system in summer (9.43%) and (6.19%), and winter (4.36%) and (8.27%), respectively, for SP and WS. Standing idle (OCEMP) was influenced by hour, with maximum 15.8% at 14h, and an interaction of system x season, in summer (20.10%) and (8.82%); and winter (9.05%) and (8.44%), respectively, for SP and WS. The SP system has changed the environment that affected the animal intake behavior.