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NGUYEN VAN PHU. 2018. Nutritional value of animal feed-stuff materials and digested amino acid optimizing for swine meal. The Institute of Agricultural Sciences for Southern Vietnam
Thứ bảy, 02-02-2019 | 08:34:14

Submitted at the IAS, December 7, 2018

 

ABSTRACT

 

The objectives aim at (1) identifying amino acid components among 25 popular materials for porcine feed-stuff industry in Vietnam; (2) identifying the digestion potential by the amino acids, which include in 25 materials; (3) identifying the industry demand to optimize the feed-stuff. The materials for starch and protein in animal feed-stuff included lower essential amino acids as lysine, threonine, methionine and tryptophan; with low CP of 16% and other essential amino acids exhibited lower than swine demand. Cereal materials with carbohydrate source also included coarse proteins, fatty acids, celluloses lower than their brans. The materials with high protein content (>20% CP), which included higher essential amino acids as lysine, threonine, methionine and tryptophan, were recommended. Digestion potential by the materials were analyzed. The rich energy and poor fiber materials obtained better protein digestion and amino acids as compared to poor quality materials with higher fibers. Their protein digestion poorly got <65%. The materials from animal exhibited high protein content so that digestion index was also higher than vegetal materials for feed-stuff. Optimizing for swine meal in terms of porcine breeding with three parents as D(YL) offered higher level than NRC recommendation (1998) from 10 to 20%, the best one is higher than 12-17%. Otherwise, the NRC in 1998 indicated ME 3265 Kcal/kg, protein 18.0% and 15.5% at the period of 20-25 kg body weight and 50-100 kg, respectively. It means that at the period of 20-25 kg body weight and 50-100 kg body weight, digestive amino acids as lysine of 0.86-0.90% and 0.68-0.71%, respectively. Accordingly, methionine needs 0.30-0.32% and 0.26-0.27%, methionine + cysteine of 0.52-0.54% and 0.44-0.46%; threonine of 0.59-0.62% and 0.49-0.51%; tryptophan of 0.17-0.18% and 0.13-0.14% at the period of 20-25 kg body weight and 50-100 kg body weight, respectively. At the level, food conversion and body weight  offered the best to lower food cost per 1 kg increased.

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