Comparison of different systems for milk feeding of kids for meat production / Comparação entre diferentes sistemas de aleitamento de cabritos para abate

ABSTRACT

A study was conducted at Itapetininga (SP), to compare three systems of milk feeding of kids. Twenty-seven cross-bred Anglonubian kids were randomly assigned to three groups of nine kids, five males and four females. All animals received coloctrum during at least the first 48 hours after birth. The kids were confined to individual pens. The treatments were, does milk (A) bottle-fed until 60 days; (B) bucket-fed until 60 days and (C) bucket-fed until 45 days of age. The milk kept at ambient temperature was offered twice a day. Kids had free access to water and grass hay (8.7% crude protein). Seven days after birth kids were offered a diet with 17% crude protein and a mineral-salt mix. A completely randomized design in fatorial scheme was used to analyse the data. Variables studied were body weight at 45,60 and 120 days; body weight gain from 1 to 45days, from 46 to 60 days and from 61 to 120 days of age and labor required to milk feed the kids during the first 60 days. There were no differences in body weight at 60 and 120 days between kids fed from bouttle or fed from bucket until 60 days of age but kids fed from bucket until 45 days of age showed the longest values. The same was observed for body weight gain. Kids from system A and B presented more higher milk intake Levels than kids from system C but had lowest concentrate intake levels. Bucket-fed system reduced labor requ

RESUMO

O trabalho foi conduzido no Posto de Ovinos e Caprinos, em ltapetininga (SP), vinculado ao Instituto de Zootecnia, comparando-se 3 sistemas de aleitamento de cabritos mestiços anglo-nubianos (A) leite de cabra em mamadeira até 60 dias de idade; (B) em balde até 60 dias (B) e (C) em balde até 45 dias. O delineamento foi inteiramente casualizado, em esquema fatorial 2x3 (sexos e sistema de aleitamento), com 4 repetições para fêmeas e 5 para machos. Os parámetros analisados foram peso vivo aos 45, 60 e 120 dias de idade e ganho de peso vivo de 1 a 45, de 46 a 60 e de 61 a 120 dias. Estudou-se ainda, o consumo total de leite e de concentrado, bem como a ocupação estimada de mão-de-obra, para aleitamento, no periodo de 1 a 60 dias. Observou-se que o aleitamento no balde por 60 dias foi semelhante, em peso vivo aos 60 e 120 dias e em ganho diário de peso vivo do desmame até 120 dias, em confronto ao aleitamento na mamadeira. Os menores Índices ponderais foram observados no sistema C. Os animais dos sistemas A e B apresentaram níveis mais elevados de ingestão de leite que os do sistema C, todavia apresentaram um menor consumo de concentrados. O aleitamento em balde reduziu a demanda de mão-de-obra.