RESUMO
O trabalho foi realizado com o objetivo de estabelecer um manejo, durante a fase de aleitamento, que fosse nutricional e economicamente satisfatório. Comparou-se o aleitamento na quantidade tradicional (1,5 kg de leite/dia) com o aleitamento de acordo com as necessidades energéticas dos animais (quantidade variável de leite), calculado por regressão, com base na literatura. Os animais que receberam o tratamento tradicional tiveram ganho de peso médio de 0,155 kg/dia, não diferindo estatisticamente (P≥0,05) do tratamento em que os animais receberam quantidade variável de leite (ganho de peso médio de 0,134 kg/dia). O desaleitamento foi feito, em média, aos 76 dias de idade. Os animais que receberam quantidades variáveis de leite ingeriram, em média, menos 20 kg de leite durante o período de aleitamento. Considerando os resultados, o melhor aleitamento foi o que utilizou a quantidade de leite variando de acordo com as necessidades energéticas dos cabritos...
The study was conducted with the objective to establish a nutritionally and economically satisfactory management during the suckling phase. Suckling using the traditional amount (1.5 kg milk/day) was compared to suckling according to the energy requirements of the animals (variable amount of milk) calculated by regression based on literature data. Animals receiving the traditional treatment presented a mean weight gain of 0.155 kg/day, which did not differ significantly (P≥0.05) from that of animals receiving a variable amount of milk (mean weight gain of 0.134 kg/day). The average weaning age was 76 days. Animals receiving variable amounts of milk ingested on average 20 kg less milk during the suckling period. Considering the results, the best suckling was obtained when the amount of milk was varied according to the energy requirements of goat kids...
Assuntos
Animais , Ingestão de Alimentos/genética , Lactação , Necessidade Energética/fisiologia , Ruminantes/crescimento & desenvolvimento , AnimaisRESUMO
O trabalho foi realizado com o objetivo de estabelecer um manejo, durante a fase de aleitamento, que fosse nutricional e economicamente satisfatório. Comparou-se o aleitamento na quantidade tradicional (1,5 kg de leite/dia) com o aleitamento de acordo com as necessidades energéticas dos animais (quantidade variável de leite), calculado por regressão, com base na literatura. Os animais que receberam o tratamento tradicional tiveram ganho de peso médio de 0,155 kg/dia, não diferindo estatisticamente (P≥0,05) do tratamento em que os animais receberam quantidade variável de leite (ganho de peso médio de 0,134 kg/dia). O desaleitamento foi feito, em média, aos 76 dias de idade. Os animais que receberam quantidades variáveis de leite ingeriram, em média, menos 20 kg de leite durante o período de aleitamento. Considerando os resultados, o melhor aleitamento foi o que utilizou a quantidade de leite variando de acordo com as necessidades energéticas dos cabritos...(AU)
The study was conducted with the objective to establish a nutritionally and economically satisfactory management during the suckling phase. Suckling using the traditional amount (1.5 kg milk/day) was compared to suckling according to the energy requirements of the animals (variable amount of milk) calculated by regression based on literature data. Animals receiving the traditional treatment presented a mean weight gain of 0.155 kg/day, which did not differ significantly (P≥0.05) from that of animals receiving a variable amount of milk (mean weight gain of 0.134 kg/day). The average weaning age was 76 days. Animals receiving variable amounts of milk ingested on average 20 kg less milk during the suckling period. Considering the results, the best suckling was obtained when the amount of milk was varied according to the energy requirements of goat kids...(AU)
Assuntos
Animais , Lactação , Ruminantes/crescimento & desenvolvimento , Ingestão de Alimentos/genética , Necessidade Energética/fisiologia , AnimaisRESUMO
To study first year growth patterns in exclusively breast-fed children, the growth (weight and height) of 232 children who had received only breastmilk during the six first months of life was followed over a period extending from 1983 to 1987. The follow-ups were done in the pediatric dispensary at Taguatinga Health Center No. 7 in the Federal District of Brazil. The children were from low-income families and represented various racial mixes. All were single products of pregnancy, had no pathological history, and had been breast-fed on demand. The percentile distribution (90, 75, 50, 25, and 10) of weight and height at birth and at 1, 2, 3, 4, 6, 9, and 12 months of age showed that the average quarterly increases in these variables were greater in the first quarter and less in subsequent quarters. The weight of the boys doubled between the third and fourth months, while that of the girls doubled in the fourth month. The results indicate that the growth of these children was satisfactory.