Relationship between main reproductive parameters and productivity traits in dairy cows
نویسندگان
چکیده
ABSTRACT The objective of this study was to determine relationship between Lithuanian dairy cow breed productive and reproductive traits. carried out with 586 fully completed lactation cows: 184 Holstein (H), 320 Black White (LBW) 82 Red (LR) cows (291 in I, 149 II 146 III older lactations). Cow productivity reproduction traits were calculated. H I had a lower insemination index compared the LR, shorter calving interval (P≤0.05) service period than LBW cows. produced 1440.46kg more milk less fat protein content (accordingly 0.28 0.22 percent) LRd. 21.38 days longer 0.68 times higher (P<0.05). LR lactations 3742kg lactation. All from 131 1420kg 0.51 percent 0.1 91 till 110 (P≤0.05).
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ژورنال
عنوان ژورنال: Arquivo Brasileiro De Medicina Veterinaria E Zootecnia
سال: 2022
ISSN: ['1678-4162', '0102-0935']
DOI: https://doi.org/10.1590/1678-4162-12492