Aashish at 16:54, 9 August 2024

2024-08-09T16:54:42Z

Bgolden at 15:44, 24 October 2023

2023-10-24T15:44:05Z

← Older revision		Revision as of 15:44, 24 October 2023
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	==Method of recording==		==Method of recording==

	ICAR recording methods ~~“A”~~, “B” and “C” may be used.		ICAR recording methods “[[Beef Cattle Recording: General#Applied beef recording schemes\|A”, “B” and “C”]] may be used.

	==Description of Test==		==Description of Test==

Bgolden: /* Method of recording */

2023-10-17T14:52:53Z

Method of recording

← Older revision		Revision as of 14:52, 17 October 2023
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	==Method of recording==		==Method of recording==

	ICAR [[recording methods “A”, “B” and “C”]] can be used.		ICAR [[Beef_Cattle_Recording:_General#Applied_beef_recording_schemes \| recording methods “A”, “B” and “C”]] can be used.

	==Reference performance==		==Reference performance==

Bgolden: /* Method of recording */

2023-10-17T14:52:34Z

Method of recording

← Older revision		Revision as of 14:52, 17 October 2023
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	==Method of recording==		==Method of recording==

	ICAR recording methods “A”, “B” and “C” can be used.		ICAR [[recording methods “A”, “B” and “C”]] can be used.

	==Reference performance==		==Reference performance==

Bgolden: Created page with "Category: Beef Cattle Recording This recommendation applies to on-farm beef performance recording undertaken in herds of cows, which suckle their calves until an age of at least four months. Data is collected in order to provide farmers with information useful for herd management and to provide raw data for genetic evaluations. It allows for genetic evaluation both for growth ability and milking ability. ==Symbol== The symbol of the recommendation is ‘SH’. =..."

2023-10-17T14:41:43Z

Created page with "Category: Beef Cattle Recording This recommendation applies to on-farm beef performance recording undertaken in herds of cows, which suckle their calves until an age of at least four months. Data is collected in order to provide farmers with information useful for herd management and to provide raw data for genetic evaluations. It allows for genetic evaluation both for growth ability and milking ability. ==Symbol== The symbol of the recommendation is ‘SH’. =..."

New page

[[Category: Beef Cattle Recording]]

This recommendation applies to on-farm beef performance recording undertaken in herds of cows, which suckle their calves until an age of at least four months.

Data is collected in order to provide farmers with information useful for herd management and to provide raw data for genetic evaluations.
It allows for genetic evaluation both for growth ability and milking ability.

==Symbol==

The symbol of the recommendation is ‘SH’.

==Method of recording==

ICAR recording methods “A”, “B” and “C” can be used.

==Reference performance==

The reference performance is the weaning weight adjusted to an age of 205 days. Additional references can be set such as adjusted 100 days weight.

==Minimum requirements==

===Animals to be recorded===

Records have to be obtained for all animals from the same group of dams/calves kept at the same location for the same purpose.

===Mandatory data to be recorded===

For each of the animals the following data should be recorded:

# Animal ID.
# Weighing date.
# One weight taken at an age between 90 and 250 days.
# Farm ID.
# Abnormal records in relation to any preferential treatment relative to the rest of the contemporaries.
# ID of the management group within herd when they exist.
# Fostering (if applied).
# Particular details in relation to illness or other performance related factors.
==Optional data to be recorded==
===Weights===
Additional weight records that may be recorded in suckler herds include:

# Regular calf (and dam) weights (e.g. every 30 days or every 90 days);
# Dam weight at mating.
# Dam weight at calving.
# Dam weight at weaning of calf.

Additional weight recordings should comply with the same standard, in that the ID of the animal, the date of weighing, the management group, etc. is recorded with the weight.

===Assessments===
Additional assessment records that may be recorded in suckler herds include:

#Body condition.
#Wither height.
#Muscular development.
#Temperament.

===Age restrictions and test length===
The recommended age for weaning weight is 205 ± 45 (161 to 250) days. The maximum variation in birth dates of all calves in a test should thus not exceed 90 days. This implies that the minimum and maximum age difference (with one weigh date for all calves) per test should also not exceed 90 days. Table 10 indicates the proposed age limits for Birth, Pre-wean and Wean Tests.

Table 3.10. Age restrictions for recordings in suckler herd tests.
<center>
{| class="wikitable"
|-
! Trait
! style="text-align:center;" | Age restriction
|-
| Birth
| style="text-align:center;" | 0-3 days
|-
| Pre-wean
| style="text-align:center;" | 51-150 days
|-
| Wean
| style="text-align:center;" | 161-250 days
|}
</center>
==Definition of contemporaries==
Apart from the definition given in section 2, the following applies. The responsibility for proper contemporary grouping lies primarily with the individual farmer. In most cases calves born within the same season (preferably not longer than a 90-day period) on the same farm can be grouped together. However, consideration should always be given to the way the calves are managed and also to the nutritional regime they were subjected to. Differences can exist on the same farm within a season, which require the establishment of two or more contemporary groups.

Creep fed calves should be separated from non-creep fed calves. Likewise, orphaned or extremely sick calves should not be compared to their normal herd mates. Crossbred calves should not be compared to straight-bred calves, except where an appropriate correction or model is applied resulting in a fair comparison.

In very large ranches or cattle operations, environmental, pasture and even management differences may exist between cattle stations or paddocks on the same property. In such cases, it is recommended that such cattle stations or paddocks be regarded as different herds and calves from different cattle stations or paddocks be handled as separate contemporary groups.

It is recommended that the information used to determine contemporary groups be maintained in the data bank to facilitate any future changes in contemporary grouping. Contemporary groups of two animals per group are useful in cattle evaluations but may show a lack of useful variation.

Birth and weaning contemporary groupings should be independent. This facilitates the inclusion of birth weights from calves that died before weaning.

==Finishing herds==

===Field of application===

This recommendation applies to on-farm beef recording undertaken in finishing herds from start to slaughter.

Data may be collected in order to provide farmers with information useful for herd management and to provide raw data for genetic evaluation. It facilitates the genetic evaluation of performance traits including growth.

The test is often used for dual-purpose breeds where young calves are weaned at an early stage.

As it is normally possible to assemble the contemporary groups it is important that the test design should be optimised as far as is possible. This property distinguishes the testing scheme from other field tests such as beef recording in abattoirs where no influence on the test design is possible. Therefore the inclusion of slaughter data does not affect the application of this testing system.

==Symbol==

The recommended ICAR symbol or abbreviation for this beef recording system is ‘FH’.

==Method of recording==

ICAR recording methods “A”, “B” and “C” may be used.

==Description of Test==

===Organisation of the test===

Weaned progeny of test and reference sires are grouped into finishing units and subjected to the same management conditions. The group should comprise at least 6 animals. In order to allow for an informative test design care must be taken to insure that the group is composed of progeny from several sires.

Accurate weighing should be undertaken on each animal on entering the finishing unit and on exit for slaughter. If an animal obviously is affected by illness or disease, this should be noted with the weighing details should always be retained with the weight and weighing date when the data is loaded to the database.

It is recommended that the length of the test be at least 1 year. At the end of the test further traits like body condition, muscular development, skeletal development may be recorded. Slaughter details of the animals such as shrunk live weight, carcass weight, national grading scores, carcass trim details and meat yield may also be recorded.

===Minimum requirements===

====Animals to be recorded====

Records should be recorded on all animals from the same group of finishing animals kept at the same location for the same purpose.

====Mandatory data to be recorded====

For each of the animals the following data should be recorded:

#Farm identification.
#Identification of the management group within herd when they exist.
#Animal ID number.
#Two weights taken at the start and end of the finishing period.
#Weighing dates.
#Abnormal records in relation to any preferential treatment relative to the rest of the contemporaries.
#Details of animals negatively affected by illness or other factors.

===Optional data to be recorded===

====Slaughter records====

Additional records that may be recorded in finishing herds include:
#Slaughter date.
#Shrunk weight.
#Hot carcass weight.
#Carcass grade according to the national grading system.
#Carcass cut details that provide information for meat yield.

====Linear assessments====

Additional assessment records that may be recorded in finishing herds include live animal data:

#Scoring date
#Body condition;
#Muscular development
#Skeletal development
#Other linear traits

===Data verification===

Prior to evaluation, records should be check and combined with other data on the animal stored in the database (e.g. place of birth, birth date, breed, parents etc.). Inaccurate or implausible data should be removed from the data file. Apart from these deletions and rejection of records due to illness or disease, no other data should be excluded.

==Definition of contemporaries==

The contemporary group may comprise all animals from the same breed, sex, finishing period and management group. Due to the uniform environment within contemporary groups medium to high heritabilties can be expected.

Beef Cattle Recording: Field Tests - Revision history

Aashish at 16:54, 9 August 2024

Bgolden at 15:44, 24 October 2023

Bgolden: /* Method of recording */

Bgolden: /* Method of recording */