Unlock instant, AI-driven research and patent intelligence for your innovation.

Phytase feed for improving intestinal digestibility of fattening pigs and reducing heavy metals in excrement

A technology of digestibility and phytase, applied in the field of animal husbandry and breeding, can solve the problems of reducing the amount of trace elements added, not considering the effect of improving the absorption rate of metal elements by phytase, etc., so as to improve the content of available phosphorus and improve the Effects of apparent digestibility and serum phosphorus content, maintenance of growth performance and muscle mass

Pending Publication Date: 2021-10-08
ANIMAL SCI RES INST GUANGDONG ACADEMY OF AGRI SCI
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the recommendation of NRC (2012), the amount of copper and zinc in 130kg pig diet is 2.96mg / kg and 50mg / kg respectively, but the amount of copper and zinc added in actual production is usually higher than this requirement, and The NRC standard does not consider the effect of phytase on the absorption rate of metal elements, so whether the addition of trace elements can be further reduced after adding phytase to the diet has not been verified

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Phytase feed for improving intestinal digestibility of fattening pigs and reducing heavy metals in excrement
  • Phytase feed for improving intestinal digestibility of fattening pigs and reducing heavy metals in excrement
  • Phytase feed for improving intestinal digestibility of fattening pigs and reducing heavy metals in excrement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Select 60 fattening pigs with an initial average body weight of 131.45±0.45kg (Du×Long×Large), adopt a randomized block experiment design according to sex and body weight, and randomly divide them into 3 groups, namely control group, test group I and test group I. Group II, 5 replicates in each group, 4 pigs in each replicate, half male and half female.

[0032] Control group (Con): fed a standard corn-soybean meal-based diet, prepared according to the NRC (2012) standard, with a total phosphorus content of 0.35% and trace element additions of 0.06%;

[0033] Test group I added 0.03% trace elements;

[0034] Test group II does not add trace elements;

[0035] The test lasted 28 days. The diet composition and nutrient levels of each group are shown in Table 1. The contents of Cu, Zn and As in the diets of each group were measured by atomic absorption method, wherein the contents in the control group were 5.30, 76.00, 0.22 mg / kg respectively, and the contents in the te...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a phytase feed for improving the intestinal digestibility of fattening pigs and reducing heavy metals in excrement. The phytase feed comprises 99.95% of a basic feed, 0.03% of trace elements and 0.02% of phytase. According to the feed, the nutrient apparent digestibility and serum phosphorus content of the fattening pigs can be remarkably improved; meanwhile, the content of heavy metal, phosphorus and coarse ash in manure of the fattening pigs is reduced; the manure emission reduction effect is achieved; pollution of the manure to the environment is reduced; and the growth performance and muscle quality of the fattening pigs are not affected.

Description

technical field [0001] The invention relates to the technical field of animal husbandry, in particular to a phytase diet for improving intestinal digestibility of fattening pigs and reducing fecal heavy metals. Background technique [0002] my country's pig breeding industry is large in scale and produces a large amount of fecal pollutants every year. The elements rich in nitrogen, phosphorus, copper, zinc, arsenic, etc. will sink into the ground with rainwater, polluting the land and water around the farm. . The enrichment of nitrogen and phosphorus in water often causes algal blooms and damages the ecology of water bodies. Heavy metals pollute soil and water bodies, resulting in the accumulation of heavy metals in agricultural products and aquatic products. Along with the biological chain, they will eventually damage human health. Therefore, it is urgent to reduce the nitrogen, phosphorus and heavy metal emissions in manure during pig breeding. [0003] In modern intensi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A23K50/30A23K10/30A23K10/37A23K20/158A23K20/28A23K20/142A23K20/174A23K20/20A23K20/189
CPCA23K50/30A23K10/30A23K10/37A23K20/158A23K20/28A23K20/142A23K20/174A23K20/30A23K20/189Y02P60/87
Inventor 熊云霞王丽蒋宗勇王志康侯磊
Owner ANIMAL SCI RES INST GUANGDONG ACADEMY OF AGRI SCI