The fertility of quail is the comprehensive index of breeding ability, semen quality, allocation rate, conception rate, litter size, and live birth rate of quail. The final performance is the level of fertility of the field.
To increase the fertility of cockroaches should start with the following aspects.
Satisfy the nutritional needs of loquat in each period. Nutrition is the material basis for animal reproduction. The lack of nutrition directly affects the breeding, abortion, litter size, and calving survival rate of quail. Therefore, feed should be strictly provided according to their nutritional requirements during each feeding period.
Guarantee a reasonable age group structure. Statistics show that the number of births and the survival rate of puppies are significantly different among females of different ages. 1 to 3 years old females grow with age and the number of births increases; 3 to 5 year old females have a reduced number of births with age, of which 3 and 4 years old mothers have the highest litter size and high birth weight. At the age of one and five years old, her mother's cubs, but as her mother's age increases, the survival rate of young larvae between 1 and 4 years old increases. According to the analysis, this may be related to the annual selection of mothers who have crippled mothers, poor mothers, and poor lactating performance. From the above, it can be seen that ensuring a reasonable age structure of herds can significantly increase the fertility of the hernia. General farms 2 to 4 years old females should account for 65% to 70% of the basic females, and 25% to 30% should be born at the first time. For those who produce more than 5 births, good birth and good milk replacement. The number of female fleas should not exceed 5%. For public breeding, pay attention to the age ratio. Generally 2 to 4 years old public funds should account for 65% to 70% of the total number of public funds, and 1 year old public funds account for 30% to 35%.
Do a good estrus assessment to ensure the number of re-allocations. The quail is a seasonal estrus. Accurate identification of estrus in females and timely mating are very effective in improving the rate of acceptance and prevention of emptiness. Therefore, it is necessary to accurately grasp the estrus law of female crickets. The study found that the number of maternal abortions that were assigned to a single birth was significantly lower than that of maternal abortions that had been allocated more than two times, and the number of maternity births that had been allocated three times was significantly higher than that of mothers that received two matings. However, there is no significant difference compared to the number of maternal abortions that have been allocated four times and five times. Therefore, assuring that one or two times of compounding can increase the number of births. Practice has proved that it is generally easier to carry out compounding after reaching the peak of estrus in the mother's estrus. It is advisable to reconstitute 1 to 2 times.
Make reasonable use of public funds and step up the training of newly allocated public funds. The strength of public breeding capacity is an important factor affecting the production level of the market in the same year. On the one hand, we must make reasonable use of existing adult public funds, master the number of public-private matings, ensure the supply of full-price nutrition, check the semen quality of public funds, and ensure the quality of mating, so that public funds cannot be over-consumed in the same year and lead to breeding capacity in the coming year. decline. On the other hand, it is necessary to step up the training of newly-distributed public funds, and the initial allocation of public funds is the main force for future public breeding. The strength of the initial allocation of public breeding services directly affects the mating schedule of the current year and the coming year and must be trained for breeding.
Improve the survival rate of calving. The survival rate of farrowing is a major factor affecting fertility. In some farms, the mortality rate of Aberdeen is high, which not only affects the production of the year but also dampens the enthusiasm of the breeder. To improve the survival rate of farrowing, we should start from the following aspects: First, strengthen the rearing and management of the gestation period, especially in the later period of pregnancy, we should meet the nutritional needs of the mother quail. The development of puerpera during pregnancy has a great influence on the survival rate of postpartum pupae. Generally, it is very difficult for a young, underdeveloped baby to survive. The second is to ensure good-birth and keep-live work, especially the work of freezing and heat insulation and birthing, as well as child-to-child care, and ensure the survival rate of farrowing.
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