Method for rapidly fattening Laiwu black pigs by low-nitrogen daily rations

Abstract

The invention discloses a method for rapidly fattening Laiwu black pigs by low-nitrogen daily rations. The method includes (1), dividing the growth development of the Laiwu black pigs into three stages in terms of weight, wherein the three stages refer to a nursing stage, a growing stage and a fattening stage, and 15-30 kg, 30-60 kg and 60-90 kg are specified for the Laiwu black pigs in the three stages respectively; (2), setting amino acid models according to different stages, wherein the ratio of lysine to methionine to methionine plus cystine to threonine to tryptophan in the ration is 100:27:54:59:16 in the nursing stage, the ratio of lysine to methionine to methionine plus cystine to threonine to tryptophan in the ration is 100:24:48:52:14 in the growing stage, the ratio of lysine to methionine to methionine plus cystine to threonine to tryptophan in the ration is 100:21:42:46:13 in the fattening stage; (3), designing formulas according to the ratios of amino acids in the models in the step (2), preparing the daily rations and feeding according to different stages. The Laiwu black pigs fed by the daily rations prepared by the method grow fast and are short in growing period and increased in marketing weight, and low feed-weight ratio and low feed price are achieved.

Description

technical field [0001] The invention relates to a method for rapidly fattening Laiwu black pigs with a low-nitrogen diet. Background technique [0002] At present, with the rapid development of the breeding industry in the direction of scale and standardization, the scale of Laiwu black pigs raised by professional farmers is getting larger and larger. The cost of breeding Laiwu black pigs is used to improve the economic benefits of the breeding industry. However, the non-uniform feeding standard, the lack of amino acid model and the lack of nutrition make the production performance of Laiwu black pig far from reaching its potential, which has become an important factor restricting the development of Laiwu black pig industry. On the other hand, most of the traditional feeds are unreasonable in nutrition, inconvenient to use, and have high breeding costs. Improving the physiological function and health status of Laiwu black pigs and reducing breeding costs will greatly impro...

AI Technical Summary

Problems solved by technology

The disadvantages of Laiwu pigs are poor fattening ability and carcass performance, slow weight gain, late body maturity, low feed remuneration, thick skin, thick fat, small eye muscle area and hind leg ratio, and low lean meat rate

How to improve the feeding method of Laiwu black pigs, there is no unified standard at present, the feeding method of hybrid black pigs is not suitable for rapid fattening of purebred Laiwu black pigs

Images