التفاصيل البيبلوغرافية
| العنوان: |
Demography and Genealogical Analysis of Massese Sheep, a Native Breed of Tuscany. |
| المؤلفون: |
Giuliotti, Lorella, Benvenuti, Maria Novella, Preziuso, Giovanna, Ventura, Emilia, Fresi, Pancrazio, Cecchi, Francesca |
| المصدر: |
Animals (2076-2615); Feb2024, Vol. 14 Issue 4, p582, 14p |
| مصطلحات موضوعية: |
SHEEP breeds, GERMPLASM conservation, SHEEP, SHEEP breeding, GERMPLASM |
| مصطلحات جغرافية: |
TUSCANY (Italy) |
| مستخلص: |
Simple Summary: Sheep farming is crucial for preserving biodiversity, maintaining soil and water quality, and supporting local communities. Preserving genetic resources is vital for combating new diseases and tackling environmental changes. This study focuses on the Massese sheep, an indigenous breed which is primarily bred in Tuscany in extensive conditions using natural resources. The examination of their genealogy revealed that the data were incomplete, as a significant number of animals were recorded with one or two parents whose identity was unknown. This made it difficult to accurately evaluate the relationships among animals and to determine the extent of inbreeding. Breeders' associations can play a crucial role in preserving genetic diversity; however, the completeness of the genealogical data needs improving. This study investigates the genealogical and demographic trends of the Massese sheep breed in Tuscany from 2001 to 2021. The Herd Book kept by the Italian Sheep and Goat Breeders Association (Asso.Na.Pa) provided the data. The descriptive statistics were analyzed using JMP software. The pedigree parameters of a total of 311,056 animals (whole population—WP) were analyzed using CFC, ENDOG, and Pedigree viewer software. A total of 24,586 animals born in the period 2007–2021 represented the Reference Population (RP), and 18,554 animals the Base Population (BP). The demographic results showed an inconsistent trend of offspring registration. This study showed a short period of productivity for both ewes and rams, with means of 1.47 and 19.2 registered newborn ewes and rams, respectively. The genealogical analysis revealed incomplete data, highlighting inaccurate assessments of the relationships among the animals, and inbreeding with large differences among provinces. The average inbreeding coefficient in the WP was 1.16%, and it was 2.26% in the RP. The total number of inbreds was 2790 in the WP, with an average FPED of 13.56%, and 2713 in the RP, with an average FPED of 12.82%. The use of pedigree data is a key and economical approach to calculating inbreeding and relationship coefficients. It is the primary step in genetic management, playing a crucial role in the preservation of a breed. The regular updating of genealogical data is the first step to ensuring the conservation of animal genetic resources, and this study is compromised by the lack of such updates. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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