Application of Feeding Enzyme in Weanling Pig Diets
The application of feed enzyme in the diet of weaned piglets needs customer satisfaction: to ensure their own economic benefits, feed manufacturers should also consider nutrient digestion and utilization while paying attention to feed costs and livestock production performance. It is generally believed that the conversion rate of feed nutrient commonly used in pigs is relatively high. In fact, even with high-quality feed, there is still about 20-30% of dry matter ingested; 20-25% of total energy, and 30-50% of total Ammonia excreted from the body. The ability of livestock and poultry to digest feed nutrients is mainly determined by the type and activity of digestive enzymes in the digestive tract. Recent decades of research and practice at home and abroad have proved that exogenous enzymes suitable for the digestive tract environment of livestock and poultry can have the same digestion effect as endopro- zomas. Adding extra enzymes in the feed can promote digestion and absorption of nutrients, improve production performance, and improve feed utilization. In addition, the enzyme does not have any side effects on the animal and it is environmentally friendly after use. In the 21st century that advocates environmental protection or green feed, the research and use of feed enzyme preparations are becoming increasingly important.
Goji Berry is taken as one of the most famous plants, which can be both for medical and eating use. The history of goji berry up-picking and for eating use has a long history of 4000years in China. People from different social hierarchies, from the emperor to ordinary people, take goji berry as a good component of medical prescriptions. Goji berry enjoys a great popularity from ancient to modern times, at home and abroad and it has a long lasting and profound life preservation culture.
Ningxia Goji Berry enjoys a great fame around the global due to its high quality standard; meanwhile, it is the only protected product of geographical identity in China, goji berry has a great popularity describes as "goji berry of the world is in China, goji berry of China is in Ningxia and Ningxia`s goji berry is the best".
Specification:
Ningxia goji berry is categorized into 5 levels for experimental use. The fruit particles are required to have evenness in shape, with juicy fruit but not dry particle with impurities, humidity or bitten by insect.
Top Level:≤ 250grains/50g
Excellent Level:≤ 280grains/50g
Superfine Level:≤ 370grains/50g
First Rate:≤ 580grains/50g
Second Rate:≤ 900grains/50g
2. Identification
Color: The color of Ningxia goji berry should be red or dark red and lack luster.
Shape: Ningxia goji berry has big spindle size in shape with thin skin and full pulp. The particle is somewhat above normal size with style trace at the front of the particle and white stipe trace at the bottom.
Goji Berry Goji Berry,Goji Berry Dried,Ningxia Goji Berry,Fresh Goji Berries Ningxia Bairuiyuan International Trading Co.,Ltd , https://www.cngoji.com
In this study, a new product for complex enzyme preparations, Sinsui Co., Ltd. (Japan), was used as the basis. Corn-soybean meal diets were used as the basis to investigate the effect of this type of enzyme on piglets' heavy forage. Applications provide reference.
1. Materials and Methods
1.1 Test compound enzyme (SELFEED) was developed by Japan's Sinsui Corporation. The enzyme activity was marked as protease 5,000,000 U/Kg, amylase 37,500,000 U/Kg, and cellulase 2,000,000 U. /Kg, lipase 1,500,000 U/Kg, and gelatinase 1,000,000 U/Kg.
1.2 The experimental animals and groupings were selected from weaning Duchang, 28 days old, and 44 big three-way hybrid piglets. They were randomly divided into control group and experimental group according to the principle of similarity of nest, weight, and gender. After 4 days of pre-test, they were transferred to the positive test, and the differences between the groups were not significant (P>0.05).
1.3 Test diets Dietary nutrient levels have been designed with reference to the China Lean Hog ​​Feeding Standard (1986) and the NRC Pig Nutrient Requirements (1998). The dietary ratio and nutritional value are shown in Table 1.
Table 1. Diet composition and nutrient level Diet composition Control group Test group Nutrition level Control group Test group Diet composition Contrast group Experiment group Nutrition level Control group Test group Corn 58.5 58.5 Digestive energy 14.0 14.0 Bean dip 24 24 Crude protein 20.0 20.0 Yeast 3 3 Calcium 0.68 0.68 Fish meal 4 4 Phosphorus 0.65 0.65 Whey powder 5 5 Lysine 1.16 1.16 Oil 2 2 Calcium hydrogen phosphate 1. 2 1.2 stone powder 1.0 1.0 salt 0.3 0.3 additive premix 1 1 feed enzyme - 0.02 two groups of matching and nutritional levels, the difference is added to the test group feed Complex enzyme preparation - feed enzyme 0.02% (ie 200 grams per ton)
1.4 Feeding Management and Measurement Indicators Piglets are raised on high beds, free drinking water, feeding, routine management and routines are conducted according to the farm routine. The second column of each group was weighed individually by the individual at the end of the test period. Each group was fed with a clearance record. The test period was 25 days.
Statistics on daily gain, feed-to-weight ratio, and diarrhea rate.
2 test results
2.1 During the weight gain test, the weight gain of piglets is shown in Table 2. The total weight gain of the experimental group was 9.06 Kg/head, and that of the control group 8.47 Kg/head: the average daily weight gain was 362 g/head and 339 g/head respectively. The average daily weight gain of the experimental group was 6.78% higher than that of the control group, and the difference between the two groups reached a significant level (P Table 2 Weight gain record
Ke / head, g / head group beginning heavy weight total weight gain daily weight gain control group 8.250.67 16.721.77 8.471.42 339 test group 8.280.48 17.342.13 9.061.95 362 2.2 feed intake test group, The total food intake of the control group was 140.6 and 138.0 Kg, respectively. The average feed intake per day was 0.433 Kg in the experimental group and 0.425 Kg in the control group. The feed intake was similar in both groups.
2.3 Feed and weight ratio According to the statistics of digital records, the ratio of feed weight in the control group was 1.20:1 and that in the control group was 1.25:1. The test group was 4.16% lower than the control group.
2.4 The diarrhea rate was observed and recorded. In this experiment, there was no diarrhea in the test group. The diarrhea rate in the control group was about 3.4%.
3. Summary Under this test condition, adding Nisin-supplemented enzyme to the feed can significantly increase the daily weight gain of Aberdeen, the amount of which reaches 6.78%; at the same time, it can also improve the feed conversion efficiency, and the improvement degree is 4.16%: another feed, to reduce the diarrhea of ​​piglets Have better results.
Research Group of Green Feed Additives, Hunan Agricultural University, February 2001
Flavor: Ningxia goji berry is astringent at first bite then sweet, without ill-smell.