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The Impact of Age at First Lambing on Milk Yield and Lactation Length in a Population of Istrian Sheep under Semi-Intensive Management (CROSBI ID 295147)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Kasap, Ante ; Ramljak, Jelena ; Mioč, Boro ; Držaić, Valentino ; Širić, Ivan ; Jurković, Darko ; Špehar, Marija The Impact of Age at First Lambing on Milk Yield and Lactation Length in a Population of Istrian Sheep under Semi-Intensive Management // Animals, 11 (2021), 6; 1604, 10. doi: 10.3390/ani11061604

Podaci o odgovornosti

Kasap, Ante ; Ramljak, Jelena ; Mioč, Boro ; Držaić, Valentino ; Širić, Ivan ; Jurković, Darko ; Špehar, Marija

engleski

The Impact of Age at First Lambing on Milk Yield and Lactation Length in a Population of Istrian Sheep under Semi-Intensive Management

This study aimed to examine the impact of ewe’s age at first lambing (AFL) on days in milk (DIM), average daily milk yield (DMY), and total milk yield (TMY). Symmetrical bimodal distribution of AFL enabled classification of maidens in those mated in the first (47%) or second year of life (53%). After accounting for all available sources of phenotypic variability with the linear mixed model for repeated records, it was estimated that AFL had a statistically significant effect only on DIM (p < 0.001). The litter size had a significant effect only on TMY (p < 0.001), while the effect of the parity was significant for all the examined traits (p < 0.001). The results of the study suggest that prolongation of age at first mating to the second year of life is not justified in dairy-orientated sheep farms. However, more evidence on this issue is needed for generalization, especially considering some other traits that can impact profitability of dual- purpose sheep farms (reproduction traits, growth rate of lambs, etc.)

sheep ; age ; first lambing ; milk

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Podaci o izdanju

11 (6)

2021.

1604

10

objavljeno

2076-2615

10.3390/ani11061604

Povezanost rada

Poljoprivreda (agronomija)

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