Shanghai white pig
Shanghai White Pig was produced in the former Shanghai and Baoshan County, a suburb of Shanghai, and distributed in the suburbs and surrounding areas of Shanghai.
(1) physical appearance
Shanghai White Pig is medium to large in size, strong in physique, with straight or slightly concave head, medium-sized ears, slightly forward, wide back, slightly larger abdomen, plump legs and buttocks, and white coat. There are about seven pairs of nipples.
(2) Production performance
The average litter size of Shanghai white pigs was 12.9, the average daily gain during fattening period was 6 15g, and the lean meat rate of 90kg carcass was 52.5%.
(3) Hybrid utilization
Shanghai white pig is used as the female parent in the production area, and the hybridization effect with Duroc pig, Large White pig and Meishan pig is good.
Beijing black pig
Beijing black pigs are mainly raised in Shuangqiao Farm and Northern Suburb Farm in Beijing, which are distributed in all districts and counties in the suburbs of Beijing.
(1) physical appearance
Beijing Black Pig has a strong physique, well-proportioned structure, moderate head size, upright or flat ears, slightly concave face and wide forehead. The back and waist are straight and wide, the limbs are strong, and the legs and hips are plump. The whole body is covered with black hair More than 7 pairs of nipples.
(2) Production performance
The average litter size of Beijing black pigs is 1 1.5. The average daily gain during fattening period was 6 10g, and the lean meat rate of 90kg carcass was 5 1.5%.
(3) Hybrid utilization
Beijing black pig was used as female parent to cross Duroc pig, large white pig and landrace pig, and the hybridization effect was good. Changbei, Yuechangbei and Duchangbei are commonly used cross combinations.
Harbin white pig
Harbin white pig, referred to as Harbin white pig for short, is produced in southern and central Heilongjiang Province and widely distributed in Harbin and its surrounding cities and counties. Habai pig is the first bred pig in China sponsored by Northeast Agricultural University. When breeding, it belongs to both meat type and fat type. Because of its fast weight gain and strong adaptability, it is welcomed by pig farms (households) and has become the dominant variety in Heilongjiang Province. In recent years, experts from Northeast Agricultural University have bred the performance of Harbin White Pig, which significantly improved the carcass lean meat rate and growth rate of Harbin White Pig.
(1) physical appearance
Harbin white pig is large in size and symmetrical in structure. The head is medium-sized, the ears are erect, the chest is wide and deep, the back and waist are straight, the abdomen line is slightly larger, but it does not sag, the hindquarters are plump, the limbs are strong, the body is strong, and the whole body is white. More than 7 pairs of nipples.
(2) Production performance
The average daily gain of bred Habai pigs during fattening period can reach more than 650 grams, the feed-meat ratio is less than 3.3, and the lean meat rate of carcasses slaughtered at 90 kg weight is more than 56%. Habai pigs have moderate reproductive performance, with an average litter size of 1 1.5, and sows have strong feeding ability.
(3) Hybrid utilization
As the leading pig breed in Heilongjiang Province, Habai pig is widely used as the female parent of hybridization, and it is hybridized with Duroc pig, Landrace pig and Large White pig in binary and ternary ways, and the hybridization effect is good. Duha, Duchangha and Dudaha are widely used hybrid combinations at present.
Sanjiang white pig
Sanjiang white pig is produced in Sanjiang Plain in the east of Heilongjiang Province, and it is a kind of meat pig bred in China. Sanjiang white pig breeding is to cross Landrace and Min pig first, then backcross with Landrace pig, and then lock breeding.
(1) physical appearance
Light head, straight mouth, drooping ears, wide waist, plump legs and hips. The coat is all white and the tufts are slightly dense. It is similar to Landrace Pig and has a typical body structure of pork pig. 7 pairs of nipples, neatly arranged.
(2) Production performance
This breed of pigs gain weight quickly, with an average daily gain of more than 620g, a feed consumption gain ratio of less than 3.5, and a carcass lean meat rate of 58.5%. The average litter size of multiparous sows is 12.4, with obvious estrus symptoms and high pregnancy rate.
(3) Hybrid utilization
Sanjiang white pig has the characteristics of good meat performance, high fertility and excellent meat quality, and both male and female can obtain good hybridization results. The hybrid commercial pig with Sanjiang White Pig as its parent has become a high carcass grade product supplied by Guangdong to Hong Kong market.
Hubei white pig
Hubei white pig is native to Hubei, mainly distributed in Central China.
(1) physical appearance
Hubei white pig has a white coat, a slightly light and straight head, two ears leaning forward or slightly drooping, a straight back and waist, a medium body length, a small abdomen, plump legs and buttocks, strong limbs and hooves, and more than 6 pairs of nipples.
(2) Production performance
Adult boar 250-300 kg, sow 200-250 kg. This variety has the characteristics of high lean meat rate, good meat quality, fast growth and excellent reproductive performance. Litter size is 9.5 ~ 10.5 primiparous sows and 12 multiparous sows.
(3) Hybrid utilization
Hubei white pig, as a female parent, has good combining ability with Duroc and Hampton pigs, especially with Duroc pigs. During the fattening period of 20 ~ 90 kg, the first generation of hybrid pigs in dukes Lake gained 0.65 ~ 0.75 kg daily, the heterosis rate was 65,438+00%, and the carcass lean meat rate was over 62%, so it was an excellent female parent for hybrid utilization.