Effect of lameness (hoof disorders) on productivity of Karan Fries crossbred cows.
Anim Sci J
; 82(1): 169-74, 2011 Feb.
Article
em En
| MEDLINE
| ID: mdl-21269376
ABSTRACT
In present study production performance of 96 lame cows was compared with 67 healthy cows. No significant effect of parity and year of calving on milk yield were observed but the effect of season of calving was significant (P < 0.01). Effect of lameness on milk yield at the second, third and fourth months and 305 days was highly significant (P < 0.01), and was also significant (P < 0.05) on lactation yield of the fifth and tenth months. The effect of lameness on monthly and 305-day milk yield was significant (P < 0.01) only for those cows diagnosed lame before calving and during the first month of lactation. The differences in mean monthly yield were highly significant (P < 0.01) at the second, third and fourth months; and significant (P < 0.05) in the first and fifth months. The loss in the first lactation month of cows which were diagnosed as lame in the second month, was found to be significant (P < 0.05). Thus the yield of the month previous to the diagnosis (sub-clinical stage) was also affected. A significant (P < 0.01) total loss of 498.95 kg of milk yield was observed during a period of 305 days.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Lactação
/
Doenças dos Bovinos
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Leite
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Casco e Garras
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Hibridização Genética
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Coxeadura Animal
Limite:
Animals
Idioma:
En
Revista:
Anim Sci J
Ano de publicação:
2011
Tipo de documento:
Article