Causes and factors associated with neonatal mortality in Creole sheep flocks

Authors

  • Francisco Espinoza-Montes Facultad de Zootecnia, Universidad Nacional del Centro del Perú, Junín, Peru
  • Evelio Saavedra Peña Facultad de Zootecnia, Universidad Nacional del Centro del Perú, Junín, Peru https://orcid.org/0000-0002-0827-9398
  • Cindy Ballardo Matos Facultad de Zootecnia, Universidad Nacional del Centro del Perú, Junín, Peru https://orcid.org/0000-0002-3509-1980
  • Wilfredo Núñez Rojas Facultad de Zootecnia, Universidad Nacional del Centro del Perú, Junín, Peru
  • Alfredo Córdova Zorrilla Facultad de Ciencias Agrarias, Universidad Nacional San Cristóbal de Huamanga, Ayacucho, Peru

DOI:

https://doi.org/10.15381/rivep.v33i5.23789

Keywords:

extensive system, lambing management, body condition, birth weight, pneumonia

Abstract

The study was carried out to identify the causes and factors associated with neonatal lamb mortality in Creole sheep flocks in extensive rearing system. Three farms located in the grasslands of the peasant community of Quero, province of Jauja, Peru, located at altitudes between 3972 and 4430 m were selected. Flocks were visited once every two weeks to collect information on mortality. The neonatal mortality rate at the end of the lambing season was 21.2%. The causes of mortality were in order of frequency: pneumonia, starvation, dystocia, diarrhoea and predation. The highest mortality rate occurred within 48 hours of parturition (71.4%). Lambs born to ewes with a body condition score (BCS) <2 were more likely to die than those born to ewes with better BCS (OR = 7.42). Moreover, lambs with >2 kg birth weight (OR = 3.52) and those born in farm C (OR = 3.42) were three times more likely to die than the heaviest lambs or those born in farms A and B, respectively.

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Published

2022-10-27

Issue

Vol. 33 No. 5 (2022)

Section

Artículos Primarios

License

Copyright (c) 2022 Francisco Espinoza-Montes, Evelio Saavedra Peña, Cindy Ballardo Matos, Wilfredo Núñez Rojas, Alfredo Córdova Zorrilla

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

AUTHORS RETAIN THEIR RIGHTS:

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b. Authors retain their right to share, copy, distribute, perform and publicly communicate their article (eg, to place their article in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in the Revista de Investigaciones Veterinarias del Perú (RIVEP).

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How to Cite

Espinoza-Montes, F., Saavedra Peña, E., Ballardo Matos, C., Núñez Rojas, W., & Córdova Zorrilla, A. (2022). Causes and factors associated with neonatal mortality in Creole sheep flocks. Revista De Investigaciones Veterinarias Del Perú, 33(5), e23789. https://doi.org/10.15381/rivep.v33i5.23789