Breeding management technology

A. Breeding generally begins in September and ends in February of the following year. During this period, it is necessary to provide enough full-priced feed to meet the nutrients needed for growth, hair replacement, and reproductive organ development. In particular, the supply of protein, fat, minerals, yeast, and vitamins must be guaranteed. 65% of animal feed, 10% to 15% of grain feed, 10% to 12% of fruit and vegetable, plus 10 grams of malt, 0.5 grams of cotton oil, 3 grams of yeast powder, and 500 units of cod liver oil. International Unit, VE 25 mg. At the same time, it is necessary to carefully select and retain the species, and choose the good color, strong appetite, and gentle temperate from the beginning of breeding to the end of breeding. The time is generally in the middle of March. In the mating season, females can have 2 to 3 estrus cycles. An estrous cycle is usually 6 to 9 days, estrus lasts 1 to 3 days, intercourse is 5 to 6 days. From about 70 days after the winter solstice, when the sunshine is extended to more than 11 hours, it has the ability to breed. Sunshine is estrus in 11.5 to 12 hours, that is, in mid-March. In this period of time, the females that were bred are empty, have fewer calvings, and have low mortality rates. At this time, breeding should be done in a timely manner. Estrus identification must be done to see, check, and release. "Look" is to observe the performance of the mother's estrus. The estrus mothers are often excited and active. They often walk around in cages, sometimes on cage nets, and sometimes sit on their genitals and their urine is green. Mild temperament, meekness when captured. "Check" is to check the changes in the vulva of the female vulva and the changes in vaginal secretions. Under normal circumstances, the estrus mother's genital changes can be divided into three stages: the first stage, the pubic hair is slightly separated, the labia minor open, pale pink; the second stage, the pubic hair is clearly separated and fell on both sides, the labia majora swelling, there are The eversion, some showing a few petals, was milky white; in the third stage, the labia was swollen, but wrinkled, relatively dry and pale. The vaginal secretions were examined visually. The estrus mothers and females were placed together to observe their performance. The estrus's mother is willing to enter the public's cage. When the public is chasing, she exhilarates with her play and sends a squeak. There are two ways to breed leeches, that is, to achieve 2 or more matings in two or more estrus cycles. Cycles can be divided into: First, two cycles of breeding. That is, the first cycle reached the initial allocation, and reached the interval of 6 to 9 days to complete the re-allocation; second, the two cycles were mated three times. That is, the first estrus cycle reached the initial allocation, and the two escorts were reached at intervals of 6 to 9 days for two consecutive days.
During the mating period, the male and female appetites decreased and they should be fed feeds with higher nutritional levels. Feed should be fresh and palatable. Try to make it as much as possible.
B. Pregnancy is assigned to the farrowing from the last time. The nutritional level during the period should be the highest in the whole year. Requests for fresh and diverse feed, but with a reasonable, relatively stable supply. The protein supply in the diet should reach 25-30 grams. The amount of feed during the breeding period is supplied 10 to 15 days before the pregnancy, and gradually increases thereafter. In addition to ensuring the supply of protein, VA750 international units to 1500 international units, VD 75 to 100 international units, VE 5 mg, and VC 10 to 20 mg must be supplied daily. During this period, drinking water should be clean and adequate, the environment should strive for quietness, early prevention of postpartum milk shortages, and the reduction of catching mothers to prevent panic. In the small room to do grass nest, pay attention to site disinfection and epidemic prevention.
C. The lactating period of the farrowing farrowing is from the beginning of farrowing to the period of the weaning and weaning of the litter. That is, from late April to mid-May. Before labor, be aware of the signs before labor. Female genitals swell during the first 2-3 days before delivery. When lying in the sun, you can see fetal movement in the abdomen of the mother's abdomen; urinary frequency and activities decrease before delivery, and squeaks, commotions, and irritability are common. . At this time, it should be observed in time to see if it is a litter. The mother-fat expelled the oily black feces 2-4 hours after farrowing, indicating that the farrowing is over. At this time, it seems to judge whether the baby is healthy or not. Aberdeen's cries are short and bright and those who are bright are healthy. Those who are hoarse, weak and weak are weak, and they are required to support the weak.
The mother-in-law must ensure the supply of drinking water, take care of it carefully, and prevent the mother-in-law from being released from the chamber. When you start eating at 15-20 days of age, care should be taken to supplement the mother's beak. At the age of 25 days, the mother's lactation capacity declines, and she must properly feed her. When it is 40-50 days, it is necessary to divide the nest in time.

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Xanthan gum, 1%, can produce a significant increase in the viscosity of a liquid. In foods, xanthan gum is common in salad dressings and sauces. It helps to prevent oil separation by stabilizing the emulsion, although it is not an emulsifier. Xanthan gum also helps suspend solid particles, such as spices. Xanthan gum helps create the desired texture in many ice creams. Toothpaste often contains xanthan gum as a binder to keep the product uniform. Xanthan gum also helps thicken commercial egg substitutes made from egg whites, to replace the fat and emulsifiers found in yolks. It is also a preferred method of thickening liquids for those with swallowing disorders, since it does not change the color or flavor of foods or beverages at typical use levels. In gluten-free baking xanthan gum is used to give the dough or batter the stickiness that would otherwise be achieved with gluten. In most foods, it is used at concentrations of 0.5% or less.

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