Good three-way crossbred piglets should be selected first, followed by two-way crossbred piglets, such as the crossbreds of Duroc Pig x Landrace x Yorkshire pigs. The selected piglets should have the advantages of strong vitality, robust physique, rapid growth and development, high feed utilization rate, strong disease resistance, and easy feeding. Such piglets have high meat yields, save feed, and have low cost and high efficiency. 2 . Select a piglet breeding farm (household) that does not have infectious diseases and parasitic diseases to select piglets, and ask the other party to issue an quarantine report from the veterinary inspection department. 3 . Piglets should be well developed, uniform in appearance, and uniform in color. 4 . Appearance identification was performed by head-to-head, and healthy and disease-free excellent piglets were selected.
(B) Appearance Appraisal Eight Views
1 . Look at piglet appearance. Robust, well-developed, fat and gratifying; long waist, wide chest, full hips behind, full abdomen, strong and strong limbs, proper proportions of various parts of the body; fine groomed hair, fine smooth, short and bright clean and non-destructive; Table no protrusions, nodules, blisters, pox, swelling, ulcers, no congestion, blood stasis, bleeding spots, it is healthy piglets. If the body lean bone dew, belly tightening, hanging hair coke, hair is different, long hair, dirty and unclean surface, etc. as sick piglets.
2 . Look at posture and spirit. Full of energy, the head and ears turn flexibly, and respond to external stimuli; standing posture is natural, movements are gentle, and tails are regularly swinging around or circling to form a ring.
3 . Look at the eyes and nose pads. Bright eyes and gods, clean without secretions, no traces of tears; nasal tray damp (white nose pink pig nose), no water for the health of piglets.
4 . See breathing. Breathing peace, uniform air flow, and frequency of 10 to 20 beats/min were healthy pigs. Respiratory frequency, difficulty breathing, and asthma are sick piglets (except when the temperature is high). 5. Look for food intake and drinking water. Healthy piglets have a strong appetite, starve before feeding, and squawk around the trough. After the feed is added, they rush to eat and rhythmically devour. Then they quickly eat, leave the trough freely or rest in the ground.
6 . Listen to the cry. The sharp and clear voices are healthy piglets. The hoarse or silent callers are sick piglets.
7. Touch body temperature. Touch the ears and belly of the piglets by hand. Those who feel slightly warm are healthy pigs, and those who feel hot are hot pigs.
8 . Test product. If you call the piglet hind legs, if you do not call or cry, prove that the pig's sexuality is not violent and easy to adapt to the new environment.
9 . Check two. The excrement discharged from healthy piglets is fine sausage-like, free of undigested feed pellets, air bubbles, mucus, serum, blood, pus, etc.; if the feces are porridge-like, watery or plant-like, the dryness is abacus-like and the feces contain no Digested feed pellets, air bubbles, serum, blood, pus, etc. are diseased piglets. The pig urine was a colorless, transparent water sample for healthy pigs, otherwise it was a sick pig. In addition, according to experience, if the lower lip of the piglet is longer, it proves that the pig will eat, and generally does not arch the groove. If the shoulders are high and wide, the growth rate is faster.
(III) Attention to Market Purchase
Farmers who purchase piglets should carefully check that, apart from the appearance appraisal methods described above, they cannot buy if the following conditions are found.
1 . Fasting pigs can't be bought. Observing the abdomen of the piglet, if it is fasting, indicates that the piglet has little or no feed intake. In order to earn more income, the seller will try to make the piglets eat more concentrate to increase the weight of the piglet. A piglet that cannot feed can indicate it is unhealthy.
2 . High temperature pigs can not buy. Touching the ears of piglets by hand, hot-hot pigs are mostly those who suffer from certain diseases and cause increased body temperature. If we see the conjunctival blush of the piglet, we can't afford to lie down and tremble when we stand, indicating that the pig is absolutely unable to purchase it. 3 . Diarrhea pigs can not buy. Piglets with diarrhea can be seen with dilute feces in the upper part of the anus and the upper part of the two hindlimbs. If there is more dilute feces, the pig's diarrhea is serious. Especially piglets that stinky in feces are usually sick pigs.
4 . Dehydration pigs can not buy. The dehydration appearance of piglets is characterized by concave, lying and muscle tremors. Such pigs are unresponsive, have dry stools, yellow urine, and are often trafficked long distances. They cause dehydration due to jolting and lack of drinking water. They grow slowly and are prone to disease. 5. Pigs that do not have their ears clamped cannot be bought. Piglets were not pinched across the ears with pliers, indicating that the veterinarian had not used the epidemic prevention needles. This type of pig is prone to disease.
In addition, it is necessary to prevent the piglet from disguising the disguise, and the bought-back piglets are liable to die. To do this, pay attention to the following points when purchasing:
1 . Look at the coat color: The skin of a healthy piglet turns red, and gently rubs the skin with wet hands. If the finger is red, the trafficker is using a red ink to stain the pig.
2 . Look at your mouth: Newborn pigs can usually eat colostrum once and clean around their mouth. If the skin of the pig's mouth is moist, foamy and milky, this is because the traffickers use bottled milk to feed the piglets.
3 . Pay special attention to the abdomen and anus of the piglets: Some piglets have no anus or hernia, and they are generally more difficult to feed. They must not be careless.
But the effect can not be completely detoxified, as little as possible without raw materials such as moldy corn.
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