Breeding method of Duroc-Landrace-Queshan domestic tri-crossbreeding pig

Abstract

The invention provides a breeding method for Du Changque Nei Sanyuan pigs. The original purebred Landrace SPF boar from Denmark is mated with the local purebred Queshan black pig sows to produce second-generation sows. The pigs are mated with the produced second-generation sows, and the offspring produced and bred are Du Changque Nei Sanyuan pigs. After crossbreeding, litter size, daily gain, lean meat percentage and feed conversion rate were all significantly improved.

Description

technical field

[0001] The invention belongs to the technical field of hybrid breeding, and in particular relates to a breeding method for Du Changque Nei Sanyuan pigs. Background technique

[0002] The carcass lean meat rate of the original local pig breeds in my country generally does not exceed 45%, while the carcass lean meat rate of foreign lean-meat pig breeds can reach more than 60%, and the carcass lean meat rate of some breeds is even as high as 80%. Lean meat is the main source of animal protein in people's food. At present, the price of lean meat in large and medium-sized cities and economically developed regions has more than doubled that of fat meat. The development of lean meat pig breeds can obtain higher economic benefits. And the main direction of commercial pig production in the future. The first-generation binary hybrid commercial pigs and external three-yuan pigs produced with local pigs as female parents have thick fat and low lean meat percentage, and ...

Examples

Embodiment Construction

[0027] In order to make the technical purpose, technical solution and beneficial effect of the present invention clearer, the technical solution of the present invention will be further described below in conjunction with specific embodiments.

[0028] A breeding method for Duchangquene three-element pigs, comprising the following steps;

[0029] (1) Cultivate local purebred Queshan black pig sows to form a core group of more than 200 sows;

[0030] (2) The original Danish purebred Landrace SPF boars are mated with local purebred Queshan black pig sows to produce F1 generation; the preferred mating season is spring and autumn; the raw material standards for the Danish purebred Landrace SPF boars are: grain 58% bran, 20% bran, 15% cake, 7% protein supplement feed, use wet mix, feed 3 times a day, and ensure sufficient drinking water;

[0031] In steps (1) and (2), the raw materials of the feed for sows fed by Queshan black pigs are as follows: 50% corn, 17% wheat bran, 11% pea...

technical field

[0001] The invention belongs to the technical field of hybrid breeding, and in particular relates to a breeding method for Du Changque Nei Sanyuan pigs. Background technique

[0002] The carcass lean meat rate of the original local pig breeds in my country generally does not exceed 45%, while the carcass lean meat rate of foreign lean-meat pig breeds can reach more than 60%, and the carcass lean meat rate of some breeds is even as high as 80%. Lean meat is the main source of animal protein in people's food. At present, the price of lean meat in large and medium-sized cities and economically developed regions has more than doubled that of fat meat. The development of lean meat pig breeds can obtain higher economic benefits. And the main direction of commercial pig production in the future. The first-generation binary hybrid commercial pigs and external three-yuan pigs produced with local pigs as female parents have thick fat and low lean meat percentage, and ...

Examples

Embodiment Construction

[0027] In order to make the technical purpose, technical solution and beneficial effect of the present invention clearer, the technical solution of the present invention will be further described below in conjunction with specific embodiments.

[0028] A breeding method for Duchangquene three-element pigs, comprising the following steps;

[0029] (1) Cultivate local purebred Queshan black pig sows to form a core group of more than 200 sows;

[0030] (2) The original Danish purebred Landrace SPF boars are mated with local purebred Queshan black pig sows to produce F1 generation; the preferred mating season is spring and autumn; the raw material standards for the Danish purebred Landrace SPF boars are: grain 58% bran, 20% bran, 15% cake, 7% protein supplement feed, use wet mix, feed 3 times a day, and ensure sufficient drinking water;

[0031] In steps (1) and (2), the raw materials of the feed for sows fed by Queshan black pigs are as follows: 50% corn, 17% wheat bran, 11% pea...