ResumoObjetivou-se avaliar a influência do nível de suplementação com concentrado sobre o perfil hematológico de ovelhas Santa Inês no terço final da gestação e puerpério, assim como dos cordeiros. Utilizaram-se onze ovelhas, aos 75 últimos dias de gestação e nos primeiros 75 dias de lactação e oito cordeiros progênie das ovelhas, distribuídas em delineamento inteiramente casualizado em arranjo de parcelas subdivididas no tempo. As amostras de sangue foram colhidas sempre pela manhã a cada 14 dias. A suplementação não afetou (P>0,05) o eritrograma e o leucograma dos animais e os componentes sanguíneos avaliados encontraram-se dentro do intervalo de referência para a espécie. A categoria animal influenciou (P<0,05) os valores de hemácias, observando-se os maiores valores (11,72 x 10 6 /µL) para os cordeiros. Os cordeiros apresentaram valores inferiores (3073,3/µL) de neutrófilos em comparação com as ovelhas, seja na gestação (4957,6/µL) ou no puerpério (4067,3/µL), que não diferiram entre si (P>0,05). Já na contagem de linfócitos, os valores encontrados nos cordeiros (2858,8/µL) foram semelhantes aos das fêmeas gestantes (2982,0/µL); as fêmeas em lactação (4119,8/µL) apresentaram os maiores valores. A suplementação com concentrado (0,5% do PV) no pré e pós-parto não altera o perfil eritrocitário e leucocitário de ovelhas Santa Inês, sendo as maiores diferenças observadas entre as ovelhas das duas categorias e os cordeiros. Palavras-chave: hemograma; neutrófilos; ovinos nativos; suplementação.

-The objective of the present study was to assess the growth performance and carcass traits of Moxotó goat kids fed different levels concentrate (supplement) (SL) on native pasture under semiarid conditions in Brazil. Thirty-two castrated kids (15.7±0.78 kg initial BW) were allocated randomly to one of the four SL (treatment groups: 0, 5, 10 and 15 g/kg BW). When the animals of treatment group 15 g/kg BW reached 25 kg BW, the animals in the other treatments groups were also slaughtered. Therefore, the animals belonging to the 0, 5, 10 and 15 g/kg of BW were finished with 18.40, 21.04, 22.94 and 25.74 kg of BW, respectively. The concentrate supplementation positively influenced the performance and the carcass traits of animals, providing higher feed intake and thus greater weight gain. The results of cold carcass yields were 405.9, 427.0, 449.1 and 462.9 g/kg of SBW for 0, 5, 10 and 15 g/kg BW, respectively. The weight of the different commercial cuts, (neck, ribs, shoulder, loin and leg) increased linearly as the SL increased; however the yields of the carcass cuts were not influenced, except for the shoulder. Overall, the distribution of non-carcass fat increased as SL increased, with the exception of mesenteric fat yield, which was not influenced. The use of concentrate supplementation to Moxotó goats under grazing conditions on native rangelands of the Brazilian semiarid improves the performance of animals and carcass yield, but does not affect the yields of commercial cuts of Moxotó growing goats.

-The objective of this study was to determine how concentrate supplementation during late third gestation and lactation affects ewe and offspring performance from birth to weaning. Thirty-six ewes and their offspring (n = 32) were used. Eighteen Morada Nova and 18 Santa Inês ewes were artificially inseminated with semen from Dorper ram and distributed in a completely randomized factorial arrangement (2 × 2) consisting of two supplementation levels (5 and 15 g kg -1 of BW) and two breeds (Morada Nova and Santa Inês) or two crosses (Dorper × Morada Nova and Dorper × Santa Inês). The ewes were weighed, their body condition was evaluated during pregnancy, and the weaning weight of the lambs at up to 70 days old was measured. There was no effect of breed or supplementation on the prolificacy or type of birth. The Santa Inês ewes had a faster rate of development, although the weight loss during lactation was lower in the Morada Nova ewes. The weight development of the Dorper × Santa Inês lambs during the maternal-dependent phase was 34 g/100 g higher than that of the other cross, with no difference in the maternal-independent phase. Dorper × Santa Inês lambs gain more weight during the 70 days of development. However, the Dorper × Morada Nova lambs show a better response in terms of production efficiency when comparing the weight of the lambs with the weight of the sheep.

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ABSTRACT. Current analysis evaluated adaptive parameters and thermal comfort of postpartum ewes fed on concentrate supplementation in grazing system. Thirty lactating pluriparous sheep, 16 Santa Inês (SI) and 14 Morada Nova (MN) were used. Physiological parameters such as respiratory rate (RR), heart rate (HR) and rectal temperature (RT) were measured, in that order, with the animals at rest in the morning (6:00-7:00 am) and in the afternoon (1:00-2:00 pm), respectively, every seven days, with 10 samples. A significant effect (p < 0.05) for RR and HR was reported in the strain. Similar behavior was reported for RR between the breeds where MN sheep had high adaptability. Supplementation levels of 0.5 and 1.5% influenced (p < 0.05) RR which was stronger in the sheep that received the highest supplementation level, possibly due to calorie increase in the diet. However, HR and RT parameters did not differ within the breed due to supplementation. HR was higher between the breeds for SI sheep at 0.5%. Results show that concentrated supplementation affected the respiratory rate of ewes in the postpartum period, with higher calorie increment at 1.5% level and superiority for Santa Inês ewes. Greater adaptability of Morada Nova sheep has been indicated when fed on concentrated diet in grazing system.Keywords: environmental factors, heat stress, nutrition, thermoregulation.Parâmetros adaptativos e conforto térmico de ovelhas deslanadas no pós-parto submetidas à suplementação concentrada em sistema de pastejo RESUMO. Objetivou-se avaliar os parâmetros adaptativos e o conforto térmico de ovelhas deslanadas no pós-parto submetidas à suplementação concentrada em sistema de pastejo. Foram utilizadas 30 ovelhas pluríparas em lactação, sendo 16 da raça Santa Inês e 14 da raça Morada Nova. Os parâmetros fisiológicos, frequência cardíaca (FC), frequência respiratória (FR) e temperatura retal (TR) foram aferidos nessa ordem com os animais em repouso nos períodos da manhã e da tarde, de 6:00-7:00 e 13:00-14:00, respectivamente, a cada sete dias, totalizando dez coletas. Houve efeito de turno (p < 0,05) para FR e FC dentro de raça. Comportamento semelhante foi observado para FR entre raças, em que as ovelhas Morada Nova apresentaram maior adaptabilidade. Os níveis de suplementação de 0,5 e 1,5% exerceram influência (p < 0,05) sobre a FR com superioridade para as ovelhas que receberam maior nível de suplementação, possivelmente pelo incremento calórico na dieta. No entanto, os parâmetros FC e TR não diferiram dentro de raça em função da suplementação, sendo que entre raças a FC foi superior para ovelhas SI a 0,5%. Conclui-se que a suplementação concentrada exerceu influência sobre frequência respiratória das ovelhas deslanadas no pós-parto, com maior incremento calórico para o nível de 1,5% e superioridade para as ovelhas Santa Inês, indicando maior adaptabilidade das ovelhas Morada Nova quando submetidas à dieta concentrada em sistema de pastejo.Palavras-chave: fatores ambientais, estresse calórico, nutrição, termorregulação.