The influence of protein source and crossing system of lambs on wool quality parameters
2016
Ružić-Muslić, Dragana (Institute for Animal Husbandry, Belgrade-Zemun (Serbia)) | Petrović, Milan P. (Institute for Animal Husbandry, Belgrade-Zemun (Serbia)) | Petrović, Milan M. (Institute for Animal Husbandry, Belgrade-Zemun (Serbia)) | Bijelić, Zorica (Institute for Animal Husbandry, Belgrade-Zemun (Serbia)) | Caro-Petrović, Violeta (Institute for Animal Husbandry, Belgrade-Zemun (Serbia)) | Maksimović, Nevena (Institute of Animal Husbandry, Belgrade-Zemun (Serbia)) | Mandić, Violeta (Institute for Animal Husbandry, Belgrade-Zemun (Serbia))
The experiment included 30 lambs-crosses F1 generation: Pirot Pramenka (50%) x Württemberg (50%) and 30 crossbred F1 generations: Pirot Pramenka (12.5%) x Württemberg(37.5) x Ille de France (50%), weaned at 60 days of age, the average body weight of 18.0 kg. The mixtures varied in protein source: I - sunflower meal, II - soybean meal and III - fish meal. The share of undegradable protein was 43 : 51 : 58 %. The average diameter of the fibres in lambs on treatments I:II:III was 26.14 : 24.96 : 25.20 μm, and of two-breed (PxW) and three- breed (PxWxIDF) crosses: 25.38 and 25.49 μm. The average height of the wool fibre in lambs on treatments I:II:III was: 2.97 : 3.06 : 3.17 cm, and in two-breed (PxW) and three-breed (PxWxIDF) crosses 2.98 : 3.15 cm. The average length of the fibre in lambs on protein sources I:II:III was 4.62 : 5.08 : 5.11 cm and in two- breed (PXW) and three-breed (PxWxIDF) crosses 4.77 : 5.11 cm. Protein source in feed mixtures, and genotype of lambs significantly influenced the quality of wool expressed through diameter, height and length of the fibres.
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