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      Faktor Non Genetik Sifat Reproduksi Domba Garut dan Persilangannya

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      Date
      2025
      Author
      Athallah, Nafis Muhammad
      Gunawan, Asep
      Ulum, Mokhamad Fakhrul
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      Abstract
      Domba sebagai salah satu jenis ternak ruminansia, memiliki karakteristik yang khas, termasuk dalam aspek reproduksi. Tujuan penelitian ini menganalisis pengaruh faktor non genetik (musim, paritas, dan tipe kelahiran) dan tipe persilangan terhadap sifat reproduksi domba Garut dan persilangannya. Data sifat reproduksi dikumpulkan dari 186 ekor induk Garut dengan domba pejantan Garut, Dorper, Suffolk dan Batur. Jumlah anak domba persilangan yang digunakan sebanyak 269 ekor. Data sifat reproduksi dianalisis menggunakan statistik deskriptif, model linier umum univariat (ANOVA) dan uji rata-rata perbandingan lanjutan dengan metode Tukey atau Uji T sampel mandiri. Pregnancy rate induk dan mortalitas anak pra-sapih menunjukkan sifat reproduksi yang berbeda nyata terhadap domba Garut dan persilangannya. Tipe kelahiran dan musim mempengaruhi mortalitas anak pra-sapih dan lambing interval induk (P<0,05). Kelahiran kembar memiliki angka mortalitas anak pra-sapih yang lebih tinggi. Angka mortalitas anak pra-sapih lebih tinggi saat musim kemarau. Faktor paritas tidak mempengaruhi jumlah litter size dan mortalitas anak pra-sapih (P>0,05). Sifat reproduksi tidak sepenuhnya bergantung pada faktor non-genetik dalam penelitian ini.
       
      As a type of ruminant livestock, sheep exhibit distinctive characteristics, including in their reproductive aspects. This study aims to analyze the impact of non-genetic factors (season, parity, and birth type) and crossbreeding on the reproductive traits of Garut sheep and their crossbreeds. Reproductive trait data were collected from 186 Garut ewes mated with Garut, Dorper, Suffolk, and Batur rams. A total of 269 crossbred lambs were used. The reproductive trait data were analyzed using descriptive statistics, univariate general linear models (ANOVA), and post-hoc mean comparison tests with Tukey's method or independent sample t-tests. Pregnancy rates of ewes and pre-weaning lamb mortality exhibited significant differences between Garut sheep and their crossbreeds. Birth type and season affected pre-weaning lamb mortality and ewe lambing intervals (P<0.05). Twin births had a higher pre-weaning lamb mortality rate, and pre-weaning mortality was higher during the dry season. Parity did not affect litter size and preweaning lamb mortality (P>0,05). Reproductive traits are not entirely dependent on non-genetic factors in this study.
       
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      http://repository.ipb.ac.id/handle/123456789/161284
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      • UT - Animal Production Science and Technology [4045]

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      Copyright © 2020 Library of IPB University
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      Indonesia DSpace Group 
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