A small brown shell layer with low grain consumption was developed by China Agricultural University

Introduction: the small brown shell layer with grain saving, also known as Nongda Brown No 3, was introduced into the brown shell layer by the researchers of China Agricultural University with the gene technology to give full play to the advantages of the DW gene, reduce the adult weight of the brown shell layer, improve the feed conversion efficiency and increase the comprehensive production efficiency of the layer The average daily consumption of this breed is about 87g, the ratio of feed to egg is 2.1:1, and the best determination level is 2.0:1, which is higher than the current determination level of the world's ordinary excellent laying hens The following benefits can be obtained by raising small brown shell layer: ① saving feed The production of 1kg eggs consumes 0.2kg-0.3kg less material; ② the raising density is increased Ordinary layer hens are usually raised in three layers of cages by hand Raising "Nongda Brown No 3" can reduce the height of each layer of cages and change it into four layers of cages, with the total height unchanged; ③ the egg price is high Although the egg weight of the small brown shell layer is smaller than that of the ordinary type, it is in line with the consumption habits of some regions The egg weight per 500g is 0.1-0.5 yuan higher than that of the large egg According to the calculation of the Institute of agricultural economy of the Chinese Academy of Agricultural Sciences, only one item of feed can be saved If the price of eggs is the same, even if each chicken produces less eggs by 1-1.2kg, the economic benefit still increases by 9.22 yuan; ④ the pollution is small Because the number of glandular stomach head of this breed is 30% - 54% more than that of the common type, the digestibility and absorption rate of feed is high, the nitrogen retention in feces is low, the pollution is reduced, and it is convenient for feces treatment Due to the characteristics of saving grain, heat resistance, strong disease resistance (especially resistant to Marek's disease) and high economic benefits, the small brown shell egg chicken can make the chicken farmers gain certain profits even when the market is weak and the common breed loses money, which is of positive significance to avoid the chicken farmers' price cut and stabilize the market price of non-staple food in the same period In addition, the production of 1kg eggs by small-scale brown shell layer can save 0.2-0.3kg feed, while the annual consumption of eggs in China is about 20 billion kg It can be seen that raising small-scale brown shell layer is of great significance for our country to produce more eggs with limited feed resources and maintain the sustainable development of layer production (author:) share to feed Weibo share to: