Percentage of consanguinity in Murrah buffalos in the Zulia state of Venezuela
Consanguinity (F) is the product of mating between animals that have one or more ancestors in common. Increased F can have positive effects but has many adverse effects, such as decreased fertility, increased embryonic losses and fetal death, decreased growth rates, decreased milk and meat producti...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Universidad del Zulia
2023-11-01
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| Series: | Revista Científica |
| Subjects: | |
| Online Access: | https://mail.produccioncientificaluz.org/index.php/cientifica/article/view/43364 |
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| Summary: | Consanguinity (F) is the product of mating between animals that have one or more ancestors in common. Increased F can have positive effects but has many adverse effects, such as decreased fertility, increased embryonic losses and fetal death, decreased growth rates, decreased milk and meat production, and decreased milk and meat quality. For a given trait, genetic gain depends on genetic variation within a population. There-
fore, since F reduces genetic variation, potential genetic progress may decrease. It is necessary to know the percentage F of individuals and the average F of the herd to detect problems caused by F and to be able to plan non-inbred crosses in the population. The estimation of the percentage of F was carried out with the genealogical records of the Río Lindo and Manantiales farms, belonging to Agropecuaria Mega 21 located in the
Baralt municipality (Menegrande) of the state of Zulia-Venezuela. A total of 520 animals were registered in the database from September 2014 to January 2023. The herd composition consisted of 6 father buffaloes, corresponding to 1% of the herd, 108 mother buffaloes, corresponding to 21% of the herd, and 406 animals with known fathers representing 78% of the herd. F coefficients were estimated by the tabular method, whichuses the parentage matrix (Matrix A) coefficients to calculate consanguinity. The mathematical formula used to calculate the F coefficients was:
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| ISSN: | 0798-2259 2521-9715 |