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Biblioteca(s):  Embrapa Caprinos e Ovinos.
Data corrente:  19/09/2017
Data da última atualização:  19/09/2017
Autoria:  NEVILLE JR. W. E.; CHAPMAN, A. B.; POPE, A. L.
Título:  Comparison of lambs from western (Columbia-Rambouillet) ewes and sired by rams of four down breeds.
Ano de publicação:  1958
Fonte/Imprenta:  Journal of Animal Science, v. 17, n. 3, p. 763-773, 1958.
DOI:  10.2527/jas1958.173763x
Idioma:  Inglês
Conteúdo:  Breed of sire differences among crossbred lambs at birth were determined from a two-year study. The lambs were first-crosses resulting from mating Suffolk, Hampshire, and Shropshire rams to Western ewes. The characters studied on the lambs at birth were weight, head width, head length and circumference at chine and shoulder points. The characters studied on the dams at parturition were width at hips, width at pins and parturition difficulty which was believed to be due to shape, size or position of the fetus. Breed of sire differences among crossbred and straightbred lambs at 120 days of age were determined from a two-year collection of data from Wisconsin farms. The crossbred lambs were first-crosses from Western ewes bred to Suffolk, Hampshire, Oxford and Shropshire rams. The 120-day characters studied were live weight, staple length and live grade. The straightbred lambs (purebreds and high grades) were of Suffolk, Hampshire and Shropshire breeds. Four crossbred lambs, two females and two wethers, from the progeny of each sire were used for carcass studies. The carcass characters studied included carcass weight, cross-sectional length and area of the longissimus dorsi, height of the spinous process of the vertebra, circumference of both thighs and U.S. carcass grade. Shropshire sired crossbred lambs were significantly less in birth weight and in the sizes of various body parts than Hampshire and Suffolk sired lambs. The last two did not differ significantly from each othe... Mostrar Tudo
Thesaurus Nal:  Crossbreds; Ewes; Sheep.
Categoria do assunto:  L Ciência Animal e Produtos de Origem Animal
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Caprinos e Ovinos (CNPC)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CNPC34947 - 1ADDAP - PP
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