Non genetic analysis on reproductive traits of Garut sheep

Abstract

The influence of non-genetic factors on the reproductive traits of sheep is used as the basis of information to design the sustainability of Garut sheep development. Reproductive traits is key factor of productify and eficiency of Garut Sheep.  The aim of this study was to analyze non genetic factors on reproductive traits of Garut sheep in Unit of the Margawati Garut Sheep and Goat Development Center (UPTD BPPTDK) Margawati. Reproductive traits data from 4,246 Garut lambs were collected at UPTD BPPTDK Margawati during the period 2021–2024. The reproductive traits analyzed included litter size, preweaning mortality, and pregnancy rate.      These data were obtained from 1,703 Garut ewes, 53 Garut rams, and 2,490 Garut lambs. Non genetic factors examined included year, type of birth, seasons, and parity. The reproductive traits data were analyzed using Univariat General Linear Model (GLM). Year had significantly (P<0,01)      impact on preweaning mortality rates and pregnancy rates and had significantly (P<0,05) effects on litter size. Parity significantly (P<0,01) influenced pregnancy rates. Type of birth significantly (P<0,01) affected preweaning mortality rates. Season did not have a significant effect (P>0.05) on litter size, preweaning mortality, and pregnancy rate.  All non genetic factors except seasons affects on reproductive traits in Garut sheep. It can be concluded that analyzing non-genetic factors affecting the reproductive traits of Garut sheep can provide valuable insights for improving management practices and developing more effective sheep breeding programs.     .