By using various hybrid methods, local breeds are used as female parents, and the introduction of good meat breeds as male parent carries out economical crossbreeding. This way, the cultivated commercial lambs not only retain the characteristics of extensive local goats, strong adaptability, but also the growth of exotic varieties. The advantages of high speed, good meat production, and good meat quality, together with the rational use of local grassy grass slopes and various agricultural and sideline resources, can lead to greater economic benefits.
First, high quality fat lamb feeding points. Lambs have two physiological characteristics: First, the growth and development are fast before the age of 6 months, after which the growth rate is slowed down. Second, before the age of 4 months, the rumen development is incomplete, and the decomposition of the rumen microorganisms is relatively weak. Therefore, the ingested concentrate feed is only degraded in the rumen and enters the stomach, and is then absorbed, so that the feed utilization rate Higher, good economic returns.
1, lamb supplementary feeding: available cereal feed with a suitable amount of soybean cake (chicken), but also can use mixed concentrate feed. For example, corn 45%, wheat bran 22%, soybean meal 30%, salt 1%, fish meal 2%. Lamb's concentrate feed increases with the age of the month. 20-30 days of age, each lamb is 50-70 grams; 1-2 months is 100-150 grams; 2-3 months is 200 grams; 3-4 months is 250 grams, daily feed 2 times.
2. Breeding of ewes: Ewes must grazing on high-quality pastures, or feed high-quality forages. At the same time, each ewlet feeds 0.4-0.7 kg of mixed feed each day. The composition of mixed concentrates: corn 60%, wheat bran 8%, cottonseed cake 16%, soybean meal 12%, salt 1%, calcium hydrogen phosphate 3%.
3. Lambs early weaning: Under the current level of production in China, lambs for the production of fattening lambs can be weaned at 60 days of age. If the supplemental conditions are good, we can wean the pigs after 42 days of age.
4. Choose fattening sheep: Select lambs from the flock that are large, well-developed, strong in feeding, and free of disease to form a fattening group after weaning. It is better to choose the male lamb because the male lamb grows faster and does not reach sexual maturity at this time.
5. The feed supply is stable: The feeds fed by the lambs after weaning should be consistent with supplementary feeds, which will help ease the stress caused by weaning. Feeds for the fattening period must also strive to maintain consistent raw materials.
6. Nutritional level: The production of fat lambs requires that the protein and energy levels of the diet are high, and the crude protein level is at or close to 20%, and the calcium and phosphorus ratios are appropriate.
7, a reasonable preparation of diet: In addition to meeting the energy, protein and cellulose requirements, but also provide vitamins and minerals feed additives and antibiotics.
8. Hygienic management: Always have sufficient and clean drinking water supply, good ventilation, dry ground, bedding, feedstuffs are not contaminated, clean the shed, site, feed trough, and sink in time, and disinfect regularly.
Third, Lamb grazing supplement feeding production
1. Arrange the lambing season: implement the production system of the fattening year when the lamb is produced, so that the slaughter time of the fattening lamb just happens to be on New Year's Day or before the Spring Festival, so as to obtain considerable economic benefits, and it is also beneficial to the supply of forage grass. In order for the lamb to grow for a longer period of time, the ideal lambing time should be in the early spring of each year.
2, choose the fattening time: generally in the middle of October, it should be supplemented with mixed concentrates. The premature start of fattening will affect the lamb slaughter and the quality of the skin.
3. Lamb weaning: Usually weaning at 2 to 4 months of age, individual lambs can be properly weaned early, and for weak lambs, weaning time is appropriately delayed.
4. Subgroups: For lambs after weaning, castrations are not castrated. Lambs are to be dewormed and medicinal baths, individually grouped in accordance with the principle of similar body weight and individual size, individually grazing, and individually supplemented and managed.
5, grazing time: daily grazing should be 7-9 hours or more, in order to increase lamb intake, promote growth and development. After each grazing cycle, the lamb should be supplemented with roughage. After winter, the amount of roughage fed should be increased, and better quality roughage should be fed, such as peanut meal and sweet potato meal.
6, supplement feeding mixed feed: Every day grazing cycle, should be fed a mixed feed, there are two supplements sooner or later, supplement feed should be quantified mixed feed. With the increase of the feeding age, gradually increasing, about 2 months before slaughter, it belongs to the concentrated fattening stage, which should be used as the focus of supplementary feeding. The amount of mixed fine feed should be increased.
Fourth, quality meat sheep production and management points
1. Rams Castration: Male lambs are cast off about 18 days after birth, and may be postponed if cloudy or infirm. Castration is best done between the morning and 10 o'clock for care. Castration or ligation can be used for castration.
2, rams to the horns: the horned sheep, should be carried out in the postoperative 5-10 months after the dehorning surgery, there are two ways to remove the horn and baking method.
3, the end of the tail: the tail should be carried out within 10 days of the lamb's birth, this time the tail is fine, less bleeding, broken end of the heat break and ligation.
4. Shearing: It is not necessary to cut hairs or cut hairs once for fat lamb production. Lambs are generally cut 1-2 times, that is, they are cut once in spring and autumn. The goats only cut one shag every spring. Cut the hair to choose a sunny day without wind, so that the sheep will not catch a cold due to shearing cold, after cutting the hair, the hair collected by grade for sale.
5. Regular medicine bath: feeds are stopped 8 hours before the medicine bath. Drink enough water to the sheep 2-3 hours before bathing to prevent the sheep from drinking liquid medicine. First bath healthy sheep, the last bath of the flea sheep.
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