Technical Measures to Improve the Breeding Potential of Meat Roosters
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First, the brooding period This period is mainly to cultivate healthy male species. Due to the influence of seed selection and other factors, species males begin to be smaller than their mothers. Therefore, careful care and careful rearing must be given during the brooding period in order to ensure their survival rate will not affect future public Mother ratio.
1. Adopt male and female feeding during the brooding period. From the start of brooding, separate male and female breeding should be adopted. This will not only provide careful management of the roosters during the brooding period, but also effectively control the weight of the roosters in the future.
2. Feeding and management methods are the same as the mother and chick. The amount of feed should be calculated flexibly according to feeding standards. At the age of 1 to 7 days, feed the material through the tray. After 1 week, use the bucket. The height of the bucket is adjusted at any time according to the height of the back of the male.
3. Correctly cut off. The age of offspring is generally controlled at 6 to 8 days of age. The cutting of defects must be performed by skilled breeding technicians. Attention should be paid when breaking a knot: The breaking of a rooster must be accurate, and cutting lengths and lengths will seriously affect the ability to catch chickens in the future breeding season, which will seriously affect the potential of its breeding potential. The criterion for a broken jaw should be: 2 mm from the edge of the nostril to the break. Some multivitamins should be added before and after the break to reduce stress.
4. Limit feeds earlier. In order to better control the weight of the rooster, a restricted-feeding program for the roosters can be started from the age of 4 weeks. Practice has proved that this not only reduces the stress, but also can well control the weight of the rooster from 130% to 140% of the weight of the hen before it is mixed.
5. Strictly control the first selection of the end of the brooding period. At the end of the brooding period, healthy, disease-free, vigorous energy should be selected. Legs, feet and toes should be straight, and wide-backed and wide-breasted cocks should be reserved for species use.
Second, the breeding period this period through strict feeding and management, to establish a good sexual reflex. To do this, we must do the following:
1 Strictly restricted feeding, so that the cock matures in time. In order for sexually mature males to achieve sexual maturity at the appropriate age, genetic factors and effects of sunlight must be removed, and restrictions must be imposed on breeding so that sexual maturity and body maturation are consistent. Therefore, the restriction of feeding technology should be more flexible during the breeding period. If 1 to 15 weeks of age are required to strictly control body weight, the following feeding restriction procedures can be relaxed at 16 weeks of age to prevent severe restriction of sexual maturity.
2. Implement nutrition standardization. During the breeding period, the roosters use the same feed nutrient components as the hens, and pay close attention to whether the feeding area, drinking position, and feeding position are adequate in the management. In the meantime, if the above position is insufficient, the fighting power of the rooster during the laying period of the hen will be increased.
3. Mix the group timely. Under normal circumstances, a male rooster can reach a standard of 40% higher than the hen's weight at the age of 19 weeks. At this time, the males can be mixed. However, the following two tasks should be done before the mixed group:
(1) Selection: The selected criteria are basically the same as the first choice. However, attention should be paid to selecting the wrong sex chickens.
(2) Reconstructing the mouth: In general, one-week-old breeder roosters who do not accurately cut the mouth during the brooding period should be repaired 1 week before the group to ensure the accuracy of the broken pheasant. The cocks can be put into laying hen houses a few days earlier than the hens, so that the cockerel can provide more opportunities for the cock while enjoying the environment. In some respects, it has also been confirmed that doing so can improve the male overbearing character of the rooster and facilitate subsequent mating.
Third, the egg production period is to grasp the quality of the roosters. Breeders will generally only focus on feeding and management of hens during the laying period. As everyone knows, the breeding and management of the roosters during the laying period is also very important. Only with a good rooster can the fertilization rate of the breeding eggs be better, and the production efficiency of the whole chicken farm can be improved.
1. The proportion of male and female should be appropriate. In the production of chickens, the ratio of males and females is generally 1:10. After many years of practice, this ratio has not only reduced the fighting between roosters, but also kept the fertilized rate of birds on the ground at around 93%. The fertility rate for 2/3 shelving is also around 90%.
2. Scientifically formulate diets. Because the management goals are different during the laying period, the male and female chickens should be fed diets with different nutritional components. Should properly reduce the rooster dietary protein content (12% ~ 13%), and timely in the cock feed quantitatively add some of the multi-dimensional elements, minerals (such as per ton of cock feed supplement 40 ~ 60 grams of zinc sulfate, 200 ~ 250 grams of sulfuric acid Manganese, after practice, has proved to be effective in raising the fertility rate), etc., to meet the mating needs of roosters, and to improve the vigor and quality of sperm.
3. Feeding method. During the laying period, male and female chickens have different dietary components. When feeding, male and female chickens should be fed separately. This means that the hens use automatic feeding devices, and they are equipped with limit boards or restricted nets. . The rooster uses a bucket to feed. This practice can effectively control the weight of the rooster, so that it basically does not meet the standard in the later period, to prevent the fertilization capacity of the chicken due to over-fertilization.
4. Prevent toe damage. If using a shelf to raise, the spacing of the sheds should not exceed 3 cm, otherwise it will damage the cock's toes, affect the energy and even be eliminated.
5. Do a good job in elimination in time. Elimination of all sex-identified errors, cockroaches, and physiologically deficient cocks from the cock group.
6. Develop a rooster replacement program. The death and sickness elimination of roosters in the flock during laying will reduce the proportion of males and females in the flock. Therefore, young cockerels can be added in proportion to the age of 40 to 46 weeks of the flock and replaced by different batches of cocks. This method can significantly improve the fertilization rate in the late flock. In order to avoid the spread of chicken diseases in different batches, the replacement cocks should be kept in isolation and the new cocks should be placed one hour before dark and evenly distributed throughout the house.
By adopting the above-mentioned measures, the number of eggs that are not fertilized can be significantly reduced, and the fertilization rate of chickens and the economic benefit of raising chickens can be greatly improved.