Cultivation method for improving reproductive performances of Diqing Tibetan pigs

Abstract

The invention discloses a cultivation method for improving reproductive performances of Diqing Tibetan pigs. The method comprises the following steps: mating Diqing boars and Diqing Tibetan sows, andscreening wild Tibetan boars; mating Duroc boars and Saba sows, and screening Dusa sows; feeding the screened wild Tibetan boars to an age of 5-6 months, feeding the screened Dusa sows to an age of 6-7 months so as to use after oestrum once; performing first mating on the wild Tibetan boars within 12 hours after the second oestrum of the Dusa sows, and compounding every 12 hours; performing supplementary feeding on piglets at an age of 7-10 days, and weaning the piglets at an age of 53-60 days. According to the method disclosed by the invention, a utilization manner of the Diqing Tibetan pigsis innovated as follows: the boars are respectively hybridized with the Diqing Tibetan pigs, the Duroc pigs and the Saba sows, and hybridization is performed between two hybrids. The hybrid pig breedsare excellent in reproductive performances and achieve hybrid vigor in aspects such as growth, carcass and meat quality, and the effect is obvious.

Description

technical field [0001] The invention belongs to the technical field of agriculture, animal husbandry and breeding, and in particular relates to a breeding method for improving the reproductive performance of Diqing Tibetan pigs. Background technique [0002] Diqing Tibetan pig is one of the types of Tibetan pigs. It has the advantages of being able to adapt to the cold and low oxygen climate on the plateau and has good meat quality. It is a grazing pig breed that can adapt to the cold and low oxygen climate on the plateau and extensive feeding management conditions. Slow growth, good meat quality, high crude protein content, unsaturated fatty acid content and essential fatty acid content in muscle, it is a kind of health meat that meets the needs of modern consumption. [0003] The current breeding method of Diqing Tibetan pigs is mainly free-ranging. They graze together with yaks all year round. After returning to the owner’s home at night, they will be supplemented with hi...

AI Technical Summary

Problems solved by technology

[0005] 1. The reproductive traits of pigs are low-heritability traits, and it takes a long time to improve through pure breeding. In addition, the existing programs are all produced by purebred breeding without selective breeding, so it is more difficult to improve reproductive performance;

[0006] 2. Use small boars for breeding. The boars have not reached physical maturity, the quality of semen is not high, and there is no purposeful selection and matching. Highly inbred methods such as mother-child mating, full-sibling mating or half-sibling mating are used in breeding. Free breeding during grazing in the wild can lead to inbreeding depression, and naturally the litter size and birth weight of piglets will not be high;

[0007] 3. Free-range feeding is adopted, and the nursing piglets are not treated with heat preservation, iron supplementation, feeding, and water replenishment. The feeding and management conditions cannot meet the physiological needs of piglets, and the growth rate of piglets is slow and the survival rate is low;

[0008] 4. The basic nutritional needs of sows and piglets are not met by feeding during the day and supplementary feeding at night, which may lead to low birth weight of piglets or even death during pregnancy, slow growth or even death during lactation, and poor weaning survival rate of piglets. Low

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