65results about How to "Suitable for large-scale farming" patented technology

The invention provides a novel black-bone chicken breeding method. The method includes the following steps of firstly, selecting Nanjing black chickens; secondly, with mountain black-bone chickens as the male parent, conducting hybridization between the mountain black-bone chickens and the Nanjing black chickens and between the mountain black-bone chickens and Daheng 699 broiler chickens to obtain the offspring group series B1 and the offspring group series B2; thirdly, conducting forward hybridization and backward hybridization between the series B1 and the series B2 to obtain the offspring group C and the offspring group D; fourthly, conducting hybridization between the group C and the group D to obtain the first generation of black-bone chickens, and conducting pure line breeding through the family method of breeding to obtain F1; fifthly, conducting hybridization between a group A and the F1 to obtain a group E; sixthly, conducting hybridization between a group B with the F1 to obtain a group F; seventhly, conducting hybridization between the group E and the group F1 to obtain a group F2, then conducting crossing fixation, and conducting pure line breeding through the family method of breeding to obtain novel black-bone chickens. The novel black-bone chickens are high in growth speed, vital force, laying rate and nutritive value, excellent in taste, flavor and nourishing effect, and suitable for being bred and popularized on a large scale.

The invention discloses a separation purification and large-scale culture method of acartia tonsa. The separation purification and large-scale culture method comprises the steps of 1, acquiring copepods; 1, carrying out directional screening on the copepods; and 3, performing enlarged cultivation. By virtue of the method, the breeding purity of the acartia tonsa is increased, and the culture device is simple in structure and is suitable for large-scale breeding.