Avaliação do efeito da Acacia angustissima com suplemento para o gado caprino na época seca

Abstract

The present study aimed to evaluate different levels of incorporation of Acacia angustissima as a supplement in the diet, based on natural pasture in goat cattle in the dry season. For its realization, a trial was installed at IPA/IIAM, located in Maputo province. In this trial, 20 male and female Landim goats were used, with an approximate age of six months and an average initial weight of 11.83 kg, randomly distributed in a completely randomized design (CCD), with five treatments and four repetitions. The treatments consisted of the following diet levels: T0-Control (no supplementation); T1-50g of fresh Acacia angustissima leaves; T4-200g of fresh Acacia angustissima leaves. The results obtained in the observations of weight gain, were submitted to ANOVA followed by regression analysis. The average daily weight gain of goats in relation to the amount of supplement administered during 42 days were not significant (P>0.05). In the period from 56 to 70 days, the relationship was significant (P<0.05), with quadratic effect (P<0.05), probably, the influence of the supplement presents greater response in this period of development of these animals. This study shows the importance and feasibility of using Acacia angustissima in supplementation of goats in the dry season, considering that the weight gain of animals in this period can mean a great commitment of production in the water season, reducing the suffering of animals in the dry season.