[PDF] Relationship between production performance, visual appraisal and body measurements of young Dorper rams | Semantic Scholar (2024)

Results indicate no correlations between pelvic measurements and other body measurements considered in this study, indicating the need to measure the pelvic area of ewes directly.

The aim of the present study was to analyze the live weight, body length, and chest perimeter in Blackhead Pleven lambs at an early age with a view to their future use as prognostic indicators of growth performance and found out that at birth and weaning the singletons had higher live weight and higher average daily weight gain in comparison with the twins.

Results indicated that there are no significant correlations between pelvic dimensions and other body measurements considered in this study, indicating the need to measure pelvic area directly.

The recorded body measurements had a strong positive correlation with BW, indicating that they can be used to estimate BW in Hissardale sheep of varying ages under field conditions.

The study showed that Dorper and Dorper x Merino genotypes into Turkey show a clear advantage over the native breeds in terms of meat production and quality not to mention the high potential for lean carcass production.

Assessment of pelvic measurements and linear body measurement traits in Sussex heifers suggested that there is an association among PAs and biometric traits, and farmers might help farmers select animals with higher PH, BW, CD, and HH during breeding to lower dystocia incidents during parturition.

Results obtained in this study indicate that it is justified to observe the body mass as one of the main determinants of social rank, as well as the possibility of earlier maturation of dominant animals.

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Data from 129 young Simmentaler bulls taken at the end of the Phase C growth tests, were used to study the relationship of mass and growth parameters on testes size and found pre-weaning gain appears to positively influence testicular growth more than post- weaning gain during a feedlot test.

These data can be useful to evaluate the heifer rearing program with respect to the growth rates of heifers on an individual farm.

Estimates of genetic parameters indicate a favorable genetic relationship between SC in Brahman bulls and AP in Brah man heifers under subtropical conditions and there was also evidence that selecting Brahman Bulls for HH would not adversely affect SC but would have some detrimental effect on AP in female progeny.

Investigation of factors affecting mating mass and reproduction in adult ewes in a commercial flock of Dorper lambs suggested that selection in the current flock should be directed against barrenness or failure to rear at least one lamb.

Genetic correlations between yearling scrotal circumference and other growth traits were positive for both sets of data indicating that selection for yearlings sc Rotal circumference should not adversely affect other growth trait in either breed.

Genetic parameters obtained were then used in two-trait, reduced animal mixed-model equations for a maternally influenced trait to predict breeding values for animals.

It does not appear advisable to use the tape in trials where weight is an independent variable whereas the use of the tape can be justified in experimentsWhere weight is the dependent variable.

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