Some standard content:
All technical contents of this standard are mandatory. Foreword
Appendix A, Appendix B, Appendix C and Appendix D of this standard are normative. This standard is issued by the Ministry of Agriculture of the People's Republic of China: CL19374-2503
The drafting units of this standard: Henan Purebred Beef Cattle Research Center, Henan Provincial Quality Meat Feeding Center, Dingning Provincial Beef Cattle Center.
The main contributors of this standard are Xu Hanfang, Liansu Junyewu, Zhang Gaofan, Zhang Jinsong and Su Yinchi. Scope
CGB19374-2003
This standard stipulates the basic requirements for the physical and appearance characteristics of breeding cattle, production performance, breeding standards and disease cattle registration. This standard is applicable to the variety identification and other evaluation of breeding cattle. 2 Normative references
The terms of the following documents are the terms recommended by this standard through reference. For dated referenced documents, all subsequent interpretations (excluding errors) or revisions shall not be extended to this standard. Parties that have difficulty reaching an agreement on this standard are encouraged to study whether the latest version of the document can be used. For undated referenced documents, the latest version shall apply to this standard. CB/T4143 Regulations on the Administration of Frozen Beef Breed Production and Demand State Council Order No. 153, 1994.4.15 Animal Husbandry Law of the People's Republic of China Presidential Order No. 1997.7.3 Implementation Rules of the Regulations on the Administration of Breeding Associations Ministry of Agriculture Policy No. 32 993.1.3 Terms and Definitions The following terms and definitions apply to this standard. 3. 1
Chu Luolai cattle charolalgbreedingstock originated from the French province of Chaillot, is a large beef cattle brand, we imported from France in 164, Canada, 4 breed characteristics
4.1 Appearance
The cattle are strong and busy, with white hair, cream color, some are yellowish-brown, with white skin and veil, of equal size, wide and folded, horns yellow, long and thin, spreading to the sides and front, with many thick grooves, wide and deep, open and wide, the male has a wide and flat back, well-developed muscles, thick ribs, and a thick meat net that extends outward and downward. 4.2 Production performance
4.2.1 Body weight and body size
The birth weight of cattle is 42kg for males and 42kg for females. When adult cattle are 3 years old, the bulls reach 2hk, the cows reach 150cmr and the cows reach 0ka. The body height reaches [3s cml, see Table 1 and Table 2]. Body size of adult cattle (3s cml)
Ben Ge/crn
Jia Muan
Lin Si/em
Weight of reserve cattle
Use/em
Qinean
Body weight/kg
Unit is dry gram
GH19374—2003
4. 2. 2 Meat performance
Fast growth and body weight are the two main characteristics of Xialulai cattle. Bulls aged 1-13 months should gain 1000-1100g, and cows aged 1-2 months should gain 1000-1100g. The use rate should be above 100%, and the net meat rate should be above 100%. 4.2.3 Reproductive performance
Bulls should be aged 1-18 months when semen is collected. The rate of sperm production should be normal: sexual vigor, and the semen quality should meet the national standard GB/T1143. The average estrus period of returning cattle is: 0-month-old, and the weight of the semen should reach above 450kg at 16-18 months of age. 5
Grade monitoring and detailed determination
5.1 Bulls
The bulls used for cold storage of semen should have complete second-generation pedigrees, clear sources, and their pedigree index, body shape, and appearance should meet the specific standards. They should have strong sexual desire and good semen quality. 5.2 Breeding cows
The breed characteristics are obvious, the total characteristics are above 10%. The milk is mainly expressed, the milk quality is good, and the maternal instinct is strong. 5.3 Reserve cows
The breed characteristics are obvious, the indicators of both parents have reached the first level or above, the growth and development are normal, and the physique is good. 5.4 Grade assessment
Adult bulls should be comprehensively assessed at the age of 3 years and cows should be assessed at 20-40 thousand kg after the first litter according to the system index, weight, body shape, production capacity and genetics. Reserve cows should be assessed at 5 months, 12 months and 18 months: 5.4. 1 Pedigree index of cattle
Use the pedigree index value to evaluate the pedigree grade of cattle. The actual calculation formula is listed in Table A. The pedigree index grade evaluation is shown in Table 3. When there is no information on the parent or mother, only the parental data is used to evaluate the grade. The grade is the first grade. When there is no information on the parents, pedigree evaluation is not required. Table 3 Pedigree index grade evaluation table
Related to the previous work on the determination of pedigree index, pedigree grade and pedigree index evaluation can be done at the same time. 5.4.2 Pedigree grade
Pedigree grade determination is shown in Table
Table 4
Pedigree grade evaluation table
5, 4. 3. The evaluation method of body shape and appearance is shown in Table 5, and the evaluation method of body shape and appearance of 6 kinds of cattle is shown in Table 5. 5.4.5 Evaluation of body shape and appearance of sires GB 193742003 adopts the age comparison method, and the birth weight, weaning weight and average weight of the offspring of the bulls and the control cattle at 18 months of age are mainly used for evaluation. Eight bulls can be selected from the offspring of bulls with the same basic weight at birth and used as control and successor bulls. They can be kept in an environment with alternating growth conditions for one week before schooling. When they are 18 months old, the relative value of meat performance can be compared. The calculation formula is as follows: 5.4.6 Comprehensive evaluation
In the comprehensive evaluation, the three indicators of system index, weight and body shape are used for comprehensive evaluation (see Table 7). For example, if two of them are special grade and one is short, the overall evaluation level is grade 1; if two of them are special grade and one is grade 1, the overall evaluation level is grade 1, and so on. Table 7
Item frequency level
Total effect
5.4.7 Evaluation of reserve cattle
Weight level evaluation Table 9.
5, 4. 7.2
Overall evaluation table
The evaluation of body shape and appearance of reserve cattle is shown in the table.
12 months old
Table 9 Evaluation of body shape and glandular grade of reserve cattle
Registration of breeding cattle
Body and blood length evaluation
Special evaluation of the breed standard, good hair growth, strong muscles, good gestation or good appearance, with breed characteristics, good hair growth, strong muscles, and obvious body shape and glandular grade.
Bulls can secrete to 3 steps, limited to one litter, and can be registered after the evaluation meets the breeding cattle standards. III. Unit: Yug. 16 months of age. GB19374—2003. Deleted 4. [Normative Appendix] Calculation method of pedigree index of Xiahuo cattle. See formula (A1) for pedigree index of Xiahuo cattle. Formula A.2): PI - 1/2EBV. 1 1/4EBVu. Relative pedigree index = 101-where: PI pedigree index. Estimated breeding value of inbreeding. Estimated breeding value of grandparent cross. Harmony index of the third head of the herd. Average disorder index of a reserve cattle. (Al) ++++++++-+r++( A, 2) If there are no records of estimated breeding values, the difference between the production performance record of the relevant bull and the average production performance of the bull at the return age can be used instead. Appendix B (Normative Appendix) External Evaluation of Charolais Breeding Cattle Thai B.1. The scoring table for the external gland adjustment of heavy Luolai cattle is as follows: the overall structure and function of the glands are clearly determined, and the breed characteristics are obvious, with special requirements met, the beef cattle have obvious body shape, and the bulls have missing parts, internal + disappearance, and the other breed requirements are normal, or the skin is soft and single-sex. Eliminate epidemic diseases, prominent chest, flat nails, three points in the air, long and flat, large internal rate extension
oxygen baby reaches the breed requirements, good semen pressure, lead room carrying belt, no small teats are evenly distributed, labor-saving, high grams between the two limits, correct shape, physique, movement and stopping, bull classification
(Normative Appendix)
Original Luolai bull fitness evaluation method
GB19374-20D3
date: In the case of fewer purebred point-dropped bulls, the elephant bulls can be used to compare the same period and age. The evaluation is mainly based on the growth trough of the offspring of the measured bulls and the control bulls, the milk produced and the average daily weight of 1 month old. If conditions permit, five bulls of different breeds can be selected for comparison. They should be raised in the same living conditions and castrated before one year old. They should be slaughtered before 18 months old. The IF formula for comparison of meat performance can be found later (C.1); bZxz.net
Relative breeding value,
Number of bulls of the same age and period!
Average meat production performance of bulls of the same age and period! Average meat production performance of bulls of the same age and period, number of valid bulls;
Total.
Recently, because the average value of the performance of a certain breed cannot be proposed in the unified evaluation standard, the relative breeding value can be temporarily not calculated. If the result is a positive value, it means that the bull has better genetic performance. The larger the value, the better. If the negative number is: it means that the genetic ability of the bull is poor, so the bigger the bull is, the better. GB 19374—2003 D.1 Body measurement method D.1.1 Instruments for measurement D.1.1.1 Measuring height with a measuring tool Appendix D (Normative Record) Body measurement method and terminology D.1.1. Measurement of length, chest temperature and correction (using skin center to measure body length with correction system, D.1.1.3 Skin measurement D.1.2 Measurement and location D.1.2.1 Body measurement, from the whole point of the business to the vertical separation of the body, from the start of the busy meeting, D. 1.2.23
D.1.2.3 The circumference of the body is measured at the posterior angle of the hindquarters. D.1.2.4 The length of the thigh is measured at the third of the front leg. D.1.2.5 The length of the body is measured directly from the front leg.
D. 1.3 Measurement requirements
When measuring: Make the cow stand on an even ground. Stand upright, with the back and front legs straight, with the back and front legs touching the front, or the back and front legs straight. The back and back legs are straight, and the back and back legs are straight. The head should be naturally forward, with the big to the right, the small to the right, and the back and back bones should be on the same level as the front bones. D.2 Terminology
Old food.2b Measurement,
The whole cow body, head, tail, not including the kidneys and the beginning ,, the following joints, the lower fat and fat of the meat, etc., D.2.3
The slaughter rate
refers to the ratio of the body to the pre-live or the meat.
The cultivation rate is calculated by the formula (1::| ...
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