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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
21/09/2017 |
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Data da última atualização: |
21/09/2017 |
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Autoria: |
GROSS, S. J.; POLLAK, E. J.; ANDERSON, J. G.; TORELL, D. T. |
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Título: |
Incidence and importance of subclinical mastitis in sheep. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
Journal of Animal Science, v. 46, n. 1, p. 1-8, Jan. 1978. |
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DOI: |
10.2527/jas1978.4611 |
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Idioma: |
Inglês |
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Conteúdo: |
The incidence of positive CMT, indicative of subclinical mastitis, was studied in a flock of purebred Targhee ewes from four selection lines. The incidence of positive CMT was found to be random at lambing with respect to age and line of ewe, number of lambs born and weaned and sex of lambs, but at docking (3 to 7 weeks after lambing) increased with increasing age of ewe and number of lambs born. The effect of CMT score on total weight of lamb weaned was examined in the Targhee ewes and in a flock consisting of purebred and crossbred ewes of several types mated to Suffolk rams. CMT score of the ewe at lambing was not a significant source of variation in total weight weaned, but variation in score at docking approached significance in both flocks. There were indications that positive CMT scores were associated with lamb losses, although it was not possible to tell if mastitis was a cause or an effect of the lamb loss. Line and age of ewe (selection experiment), number of lambs born and weaned and sex of lambs were all significant sources of variation in total weight of lamb weaned. |
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Thesaurus Nal: |
Animal diseases; Mastitis; Sheep. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 01649naa a2200205 a 4500
001 2076035
005 2017-09-21
008 1978 bl uuuu u00u1 u #d
024 7 $a10.2527/jas1978.4611$2DOI
100 1 $aGROSS, S. J.
245 $aIncidence and importance of subclinical mastitis in sheep.
260 $c1978
520 $aThe incidence of positive CMT, indicative of subclinical mastitis, was studied in a flock of purebred Targhee ewes from four selection lines. The incidence of positive CMT was found to be random at lambing with respect to age and line of ewe, number of lambs born and weaned and sex of lambs, but at docking (3 to 7 weeks after lambing) increased with increasing age of ewe and number of lambs born. The effect of CMT score on total weight of lamb weaned was examined in the Targhee ewes and in a flock consisting of purebred and crossbred ewes of several types mated to Suffolk rams. CMT score of the ewe at lambing was not a significant source of variation in total weight weaned, but variation in score at docking approached significance in both flocks. There were indications that positive CMT scores were associated with lamb losses, although it was not possible to tell if mastitis was a cause or an effect of the lamb loss. Line and age of ewe (selection experiment), number of lambs born and weaned and sex of lambs were all significant sources of variation in total weight of lamb weaned.
650 $aAnimal diseases
650 $aMastitis
650 $aSheep
700 1 $aPOLLAK, E. J.
700 1 $aANDERSON, J. G.
700 1 $aTORELL, D. T.
773 $tJournal of Animal Science$gv. 46, n. 1, p. 1-8, Jan. 1978.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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