In Indonesia the growth rate of goats and sheep meat production is about 3.8%–1 per year1 which is quite near to the ground. Therefore, scientists are focusing to amplify the growth and production rate to the maximum level. Numerous factors limit this production level include quality and the availability of animal feeds.
Some fodders have the potential to provide high quality feeds2. Indigofera zollingeriana is one of the forages which can perform in conditions of drought, infertile land and high salinity3. The biomass output (strands, leaves and branches) is relatively high (21-31 t DM/ha/year)4. It consists of crude protein content up to (25-29%)5. The consumption of I. zollingeriana as a feed supplement6 or as sole forage7 have been revealed to provide good growth rate of goats.
Mixtures containing I. zollingeriana and C. calothyrsus along with Green concentrate pellets have enhanced physical qualities, nutrient digestibility and ruminal fermentation as well8. A research was performed on feed green concentrate pellets in combination with I. zollingeriana and C. calothyrsus to assess its impacts on body weight gain, nutrients degradability, fermentation rumen characteristics and blood metabolite in goats. Twenty four male Boer x Kacang crossbreeds were used with age of about 6 months and average initial body weight (BW) 13±0.5 kg in feeding and digestion trials. Randomized block design (RBD) was followed with four dietary treatments. Six goats were allocated to one of four treatments in RBD. The animals feed was chopped and fresh Brachiaria humidicola. Feed treatments were offered daily at 4.0% body weight (BW).
Scientists observed the amplification in the digestibility with the increasing amount of I. zollingeriana in the green concentrate pellets (GCP). The tannin content of GCP showed no significant impact on feed intake. The daily body weight gain and efficiency of feed utilization improved as the proportion of I. zollingeriana GCP increased. Mounting the proportion C. calothyrsus in GCP affected the concentration of ammonia (NH3) and VFA of the rumen liquids of goat.
Supplements containing green concentrate pellets (GCP) composed of 90% Indigofera zollingeriana and 10% conventional ingredients were offered to Boerka goat. This combination exhibited the best outcomes in term of the body weight gain, feed intake, nutrient digestibility, feed efficiency and ruminal fermentation. The green concentrate pellets (GCP) composing of 60% I. zollingeriana and 30% C. calothyrsus (3.33% tannin on DM) improved feed intake, concentration of NH3, VFA and decrease the blood cholesterol level in goats.
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25 August, 2019