Some standard content:
All the provisions of this standard are mandatory. Foreword
Appendices A, B, C and D of this standard are normative appendices. This standard was proposed by the Ministry of Agriculture of the People's Republic of China GB 19375--20G3
The drafting units of this standard are: National General Station of Commercial Animal Husbandry, Hebei Provincial Animal Husbandry and Breeding Center, Shandong Provincial Commercial Animal Husbandry Breeding and Promotion Center, Henan Provincial Pure Tax Beef Cattle Breeding Center, and the main authors of this standard are Xu Yangfang, Pei Xianyu, Li Xiaren, Zhang Huisong, Ying Zijun and Zhang Gongfant Scope
Limousin Breeding Cattle
GB19375-2003
This standard specifies the Limousin breeding cattle Definition, external characteristics, cattle production performance, breeding standards and basic requirements for the registration of breeding cattle. This standard applies to the variety identification and grade assessment of Dingli cattle: 2 Normative referenced documents
The provisions of the following documents become standard provisions through reference in this standard. For the referenced documents with dates, the subsequent static requirements (excluding errors) are not applicable to this standard. However, the latest versions of these documents can be used for the research and development of the project based on this standard. For referenced documents without dates, the latest versions shall apply to this standard. GB/T4143 Regulations on the Administration of Breeding Stock of Cattle State Council Order No. 53 194.4.15 Animal Drug Law of the People's Republic of China State Council Order No. S7 1998.7.3 Rules for the Implementation of Poultry Management Regulations Ministry of Agriculture Order No. 32 1998.1.3 Terms and Definitions The following terms and definitions shall apply to this standard. 3.1 Limousin breeding stock is originally from Vienne, central France. It is a large breed of cattle. Since 1974, it has been introduced from France, the United States, and Canada. 4 Breed Characteristics 4.1 External Characteristics The body is well-proportioned, the body is relatively long, the body is well-developed, the color of the whole red is dark red, but the color below the wrist joint, the lower jaw, the eye circle, and the mouth are bright, and the color of the mouth is light, mostly straw or white. The head is short and wide. The bull's horns are shorter and extend to the sides and curl outward, while the cow's horns are curved forward. The collar is thick, the hindquarters are well developed, the limbs are delicate and strong, with typical characteristics of beef cattle, and the cross is black. 4.2 Production performance
4.2.1 Body weight and body size
According to the production weight of bulls: the body weight of bulls at 3 years old reaches 1m and the body weight of cows reaches 13m. Table 1. Table 2>,
Table 1 Body size and weight of adult cattle (3 years old)
4.2.2 Meat performance
Height: m
Meal weight: cm
Cattle weight/kg
The meat quality is good, and the meat has a good marble texture. The daily gain of bulls from 5 to 28 months old is 800~100g, and that of cows is 5nOg-S. The survival rate after intensive fattening is mainly to add, the net meat rate is above %, 4.2.3 The breeding limit is 11 pounds, the age of cutting is 16-13 months old, the breast development of the mother is normal, the lactation is good, the motherhood is good, 1
GB19375-2003
5 Classification and evaluation
5.1 Breeding bulls
The breeding bulls used for the production of cold reading fine goods are complete in the three generations of the original elimination standard, and their breeding index, body shape, good appearance must reach the first grade.
5.2 The number of pedigrees, weight, body shape and appearance of each breeding bull must be above the second grade, with excellent production performance, normal breast development, good performance and strong motherhood. 5.3 Reserve cattle
All the indicators of the parents have reached the level above -, the breed characteristics are obvious, the case is clear, the cattle have long hair and are well-groomed, and the weight meets the requirements of each growth and development stage (see Table 7).
Table 2 Weight of each cattle
5.4 Grade evaluation
It is a piece of
The unit is dry grams
28 Sichuan age
The cattle are 3 years old, and the cows are 2 months to 1 month after giving birth. In June, the pedigree index, weight, body shape, appearance, production performance and genetic evaluation shall be comprehensively evaluated. The reserve cattle shall be sexually evaluated before 6 months, 12 months and 18 months of age. 5.4.1 Pedigree index of breeding cattle
The breed index grade is evaluated according to the pedigree efficacy value. The calculation formula is shown in the attached data. The pedigree index grade evaluation is shown in the table. Table 3 Pedigree index evaluation table
For pedigree cattle
If there is no information on the father or mother, the pedigree grade is evaluated only according to the efficacy data. The grade is 1. If there is no pedigree evaluation at all, pedigree evaluation is not required.
The pedigree index is used as the basis for the evaluation. The pedigree grade and pedigree index evaluation can be used at the same time. 5.4.2 Pedigree grade
See Table 4 for pedigree grade evaluation.
Table 4 Pedigree Grade Assessment Tablewww.bzxz.net
5. 4. 3 Weight Grade Assessment Reference 3.
Table 5 Weight Grade Assessment of Breeding Cattle
Prohibition or fetal
Sexuality: The minimum value of the same position is given.
Body Shape
Body Shape and other aspects of the assessment are further evaluated. See Table 6 Body Shape Overall Grade Assessment Table
5.4.5 Quantitative Evaluation of Breeding Bulls
GB19375—2003
The comparison method of the same period is adopted, and the average weight gain of the first month of the year, the last month of the year and the age of the bulls are used as the reference for evaluation. You can choose to buy the bulls of the same age and raise them in the same living conditions before the age of 8. Slaughter them at 18 months old. The relative scores and values of the performance of the bulls are calculated by the formula shown in the table. 5.4.6 Comprehensive evaluation
Comprehensive evaluation is based on pedigree index, weight, body shape and appearance to determine the training grade! See Table 7), such as: two of which are maintenance grades, one item × two items are maintenance grades, the total evaluation is equal to grade 1, and the remaining test grades are maintenance grades: If there are differences, the bulls can be determined according to the results of the production performance test of each bull and the mating relationship. Overall evaluation table
Two-item comparison
Overall evaluation
5. 4.7 Evaluation of reserve cattle
5.4.7.1 See the table for evaluation of physical fitness
Table 8 Evaluation of weight of ready cattle
5.4.7.2 See the table for evaluation of external body shape
They have breed characteristics, good breeding, full growth momentum, and no obvious defects. Cow
12 years old
Table 3 Body shape and appearance assessment standards for reserve cattle
Cattle registration
Appearance
Other breed characteristics: good winter shape, few tax advantages, good development: Nuco, multi-nucleate body shape without obvious pitfalls 3F.5
Bulls to 3&, world cattle have reached the stage of pregnancy, please register after the evaluation has met the breeding standards. Single point
18 young
GB193752003
Appendix A
Normative appendix
Calculation method of pedigree index of breeding cattle
See formula (A.), formula (A.2): PI-1/2HBV, +1/4EBV.
Relative pedigree index=
In the formula:
PI--.Pedigree index:
The estimated breeding value of the father's line;
Estimated breeding value of foreign cross:
The number of pedigree drops of the first individual;
The semi-average pedigree index of the next step
FL - Pt
.......(A..2) If there is a breeding plan, the production performance record of the corresponding bull can be used in conjunction with the average production performance record of the same bull in the same period (Normative Appendix) External photography scoring of Limuwei breed cattle Overall structure Evaluation requirements The breed characteristics are obvious, the body size meets the requirements, the physique is good, and the body weight of the cattle used is obvious: the bull has good sexual characteristics, the meat is plump, the hair meets the requirements of the breed, the skin is soft and has a white texture, the forequarters are deep and fine, and the cattle are half-A. , full muscles, healthy body, healthy appearance, normal development, normal nipple distribution, normal infant function, full absorption, good shape, and good physical condition. Bulls and cows are full marks. Attached to the heart (normative appendix) The most traditional evaluation method for wood-feeding bulls GR13375-2003 At present, under the condition of less wood-feeding bulls, hybrid cattle can be used to compare the same period. The evaluation is mainly based on the birth weight and average weight gain of the designated bulls and the adopted bulls at 18 months of age. If conditions permit, the bulls with the same origin can be selected and compared with the old bulls. The head and head are raised in a suitable living environment. Before castration, the test is carried out at 18 months of age. The meat performance of the bulls is compared and calculated as shown in formula c:
In the formula:
Relative value:
The number of bulls tested!
The number of bulls of the same age:
NI (MX-m)
The average meat performance of the bulls tested! - The half-mean value of the meat performance of the bulls of the same age and the same period; - The effective value
Total
At present, the half-mean value of the meat performance of a certain breed has not been proposed in the unified evaluation standard, so the percentage of the relative value can be temporarily calculated. If the value is positive, it means that the bull has better genetics, and the value is better. If it is negative, it means that the genetics of the bull is not good, and the effective value is bad.
G13375—2003
D,? Body measurement method
D. 1. : Measuring tools
D,1.1.1 Measurement position quotient measurement.
(Normative Appendix)
Body soldiers avoid or methods and terminology
D.1.1.2 Tidal body length, sea, pipe belt with variable ruler to reduce the length of the rescue ruler to use the certificate number, D,1.1.3 Measurement rate with special ruler (or leather). D.1.2 Xie Min position
D.1.2.1 Body quotient out of the group A measurement of the highest point to the pool surface of the gram. D.1.2.2 Body oblique length, from the front edge of the liver to the urinary inflammation of the political distance. D.[,2.3 Quotient: for the vertical true classics of the body after the connection. P, 1.2.4 tube, in the front of the cavity on both sides = some of the same length, at the thinnest part of the front tube to measure the circumference of the diameter of the 1.2.5 ratio.
D. 1. 3 avoid measurement to change
when measuring, to make the cow stand and shoot the ground, when standing, limbs floor end, from the back to the front to the back to the front to the left eye + side to look at the left drama cover for me, send the stage limit pure no service. Four phases of the heart, will be in the grip of the true load. Should be natural forward spirit, neither left or right, must not be high or low, the skull should be on the same level. .2 Name of inquiry
D. 2.1 The rate of
126 fishing grounds:
D, 2.2 Ming body
and the household excluding the skin, head, tail, viscera (excluding kidneys and kidneys) brain organs below the joints of the limbs, genitals and the state of fat ball weight. 23 The rate of
body more active
solution of the business formula (D.1:
Huahua ()
D.2.4 Net meat half
rate before the soft
maintenance of the front body after the end of the calculation, because the fat point exceeds the first two monitoring ratio. Net net density calculation first place Wu (.2)
net meat rate 5》 two room can live
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