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The benefits of forest products as animal feed or feed additives

2019-11-12

Forest products are rich in the nutrients needed by the animals' body. These nutrients have the functions of promoting growth, improving animal production performance, and improving the quality of animal products in many aspects. They are natural green organic feed additives. The research and application by livestock husbandry and scientific personnel proved that adding pine needles to chicken feed can increase egg yellowness. Many forest products used as animal feed or feed additives can effectively improve the quality of animal products.

Improve the color of meat products. Such as pine needles containing 197 mg-343 mg of carotenoids per kilogram, as egg color enhancer, can increase the yellow color of eggs; fresh pine leaves fed cattle, sheep, rabbits, geese and other herbivores, can significantly improve their skin and muscle Color. Often used as an animal pigment enhancer, such as hedgehog leaves, indus leaves, amorpha, apple leaves, mulberry leaves, orange peel, Millettia and the like.

Increase the edible part of animal products. Adding forest products in proportion to compound feed can effectively improve, balance, and balance the nutritional ratio of compound feed, so that the nutritional level of the feed to be combined tends to be full-priced, give full play to animal production performance, increase lean meat, and reduce body weight. Fat, improve product quality, improve nutrient basis. Adding 5% Indus powder to finishing pig feed can increase pig weight gain by 32.63%, carcass lean meat percentage by 11.16%, body fat by 4.17%, and feed reward by 22.29%. Adding 8% Amorpha fruticosa powder to mutton sheep with concentrated feed, the weight gain rate was 9.3% higher than that of the control group, the lean meat percentage was increased by 7.21%, and the abdominal fat was decreased by 2.36%. When 3% poplar leaf powder was added to the feed of broilers, the average lean meat percentage of chickens in the experimental group was 6.35% higher than that of the control group, and the abdominal fat was reduced by 2.47%. With 4% fleas, the lean percentage of chickens increased by 9.76% and abdominal fat decreased by 2.96%. The feed additives for forest products that can increase the lean meat percentage of cultured animals include tea leaf, Eucommia ulmoides leaf, and ginkgo leaf.

Increase nutrition in animal products. According to the chicken farm test, 3% of waste tea powder was added to the feed of chickens. The results showed that vitamin E and vitamin A were found in muscles, 2.4 times, 2.2 times more than normal chickens, and 25% less oxidized lipids. According to several tests, adding 2% to 3% of pine pollen to the broiler diet increased the vitamin A, selenium, and myogenin contents in chicken muscle by 57.3%, 8.9%, and 9.1%, respectively.

Reduce the residue of harmful substances in animal products. Studies have shown that the addition of 500 mg of glycosaminoglycans per kilogram to the basal diet of broilers, compared with the group fed with antibiotics, significantly reduced the contents of heavy metal cadmium and lead in the muscle and liver of broilers, and increased muscle fat and amino acid content. The tea polyphenols extracted from tea are polyhydric phenolic compounds, which often form complexes with the metal elements in the animal body and affect the absorption of these elements. Tea polyphenols usually do not affect iron absorption. Metals such as copper, lead, cadmium, magnesium, and zinc that enter the animal's gastrointestinal tract are complexed so that they cannot be absorbed by the body and prevent harmful metal ions from remaining in the tissue.

Improve the flavor of animal products. Robinia pseudoacacia leaves, apple leaves, etc., as feed additives, contain high crude protein and various amino acids, and there are a variety of aromatic and freshly related amino acids in the meat protein crystals contained in various forest products. In addition, leaves, resins, and skin contain volatile oils of different aromas. These volatile oils help to increase the aroma and freshness of animal meat, milk, and egg products. Some of the fruit seeds in the tree contain a certain amount of fatty acids, which can improve the flavor and health effects of the meat.

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