The Influence Of Birth Weight And Litter Size On The Growth Of Lamb To Weaning Age In Dorper And Awassi Sheep
Defi Sriwahyuni1, Mika Naufal Ardiansyah1, Asrullah As1, Wike Andre Septian1 Chairdin Dwi Nugraha2, Rafika Febriani Putri1, Ari Ardiantoro1, Tri Eko Susilorini1, dan Suyadi Suyadi1*t

1Faculty of Animal Science, Universitas Brawijaya, Jl. Veteran, Malang 65145, Indonesia
2Research Center for Animal Husbandry, National Research and Innovation Agency Republic of Indonesia (BRIN), Bogor 16911, Indonesia
*Corresponding Author: suyadi[at]ub.ac.id

Abstract

The research, conducted over three months from September 7 to Desember 7, 2023, at UD Kambing Burja (Domba Dorsip) in Karangploso District, Malang Regency, East Java, aimed to assess the impact of litter size and birth weight on lambs until weaning age, focusing on Dorper and Awassi breeds. Data comprised birth weight, litter size, and weaning weight of 30 Dorper and 30 Awassi lambs, both male and female. Direct observations and weighing were employed to collect primary data. Statistical analysis revealed no significant difference (P > 0,05) in male birth weight between Dorper and Awassi sheep, though single births exhibited a significant difference (P < 0,05). Weaning weight analysis indicated differences (P < 0,05) between genders in Dorper lambs but not in Awassi lambs. Furthermore, weaning weight differed (P < 0,05) based on litter size in single birth Dorper lambs, while no such difference was observed in Awassi lambs. Based on the research results, it can be concluded that there is an influence between the birth weight of Dorper and Awassi lambs based on gender and the birth weight of Dorper and Awassi lambs based on single and double birth types. There is no influence on the weaning weight of Dorper and Awassi lambs based on gender, and there is no influence between Dorper and Awassi lambs based on single and double birth types.

Keywords: Birth weight, litter size, Dorper, Awassi, fullblood, gender, weaning weight

Topic: Animal production