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Abstract
The study aimed to determine the effect of adding tannin and myristic acid in complete feed on nutrient content and the Profile of volatile fatty acids (VFA) in vitro. The materials used for this research were corn straw, condensed tannins, myristic acid, coffee waste, rice bran, tapioca byproduct, soybean meal, copra meal, and palm kernel meal. The method was used in this experiment was laboratory experiment with four treatments and three replications. The treatment consisted of T1 complete feed (40% corn straw + 60% concentrate (be based DM)), T2 (complete feed + condensed tannins 3%/kg DM and myristic acid 2%/kg DM), T3 (complete feed + condensed tannins 3%/kg DM and myristic acid 3%/kg DM), and T4 (complete feed + condensed tannins 3%/kg DM and myristic acid 4%/kg DM). Every treatment was repeated three times and analysed statistically using Randomized Block Design (RBD). The adding of 4% myristic acid to the complete feed (T4) gives the best results, it increased nutrition and propionic acid, but decreased acetic acid, butyric acid, total VFA and C2/C3 ratio.
Highlights
IntroductionAnimal feed is all feed ingredients that can be given and are beneficial for livestock and do not harm the body of animals
One of the factors determining the success of a livestock business is feed
Complete feed is a complete ration that has been formulated so that it contains all the nutrients according to the needs of livestock and is given as the only feed. [14] explained that complete feed for ruminants is a mixture of concentrate and forage feed ingredients
Summary
Animal feed is all feed ingredients that can be given and are beneficial for livestock and do not harm the body of animals. Each feed given must contain complete nutrition with a balanced composition so that the feeding is efficient according to the needs of the livestock [1]. Ruminant feed is not available throughout the year, especially during the dry season. Sufficient feed resources need to be sought to supplement the value of low forage quality and reduce dependence on grass. Sources of feed should be easy to obtain, available in large quantities at a relatively low cost, such as the utilization of corn straw waste. Corn straw consists of stalks (stems) and leaves. In Indonesia, the amount of corn straw is 7,015,950 tons of dry matter and 25,056,965.21 tons of fresh material [3]
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