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| de la Barra,Rodrigo; Uribe,Héctor; Latorre,Etel; San Primitivo,Fermín; Arranz,Juan. |
| Chilean sheep breeds have a significant founder effect since they descend from very few parents, in some cases population inbreeding has increased and in others there have been significant differentiation processes as compared to their original population. The objective of this study was to estimate the current status of genetic diversity in sheep herds, which comprise the main sheep breeds in Chile, using molecular methods. Animals from four breeding herds were sampled and analyzed. The breeds studied were Corriedale, Suffolk Down, Romney Marsh and Chilota, these are the predominant numerical pure breeds in Chile. From each breed population 40 animals were sampled. Genetic characterization was done using nine microsatellite molecular markers (SSR)... |
| Tipo: Journal article |
Palavras-chave: Microsatellite; Diversity; Sheep; Chile. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000400016 |
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| Martínez,María E; Calderón,Cecilia; de la Barra,Rodrigo; de la Fuente,L. Fernando; Gonzalo,Carlos. |
| Morphological traits of the whole udder (circumference, width, height, and length), teats (angle, length and width), udder cistern (teat opening and cistern height), and milk yield were measured over one lactation in a total of 18 ewes (nine Chilota and nine Suffolk Down sheep) belonging to the same experimental flock (Centro Experimental INIA Butalcura, Chiloé, Chile). Analysis of variance showed significant effects for breed, sheep within breed, and stage of lactation. Chilota ewes evidenced greater udder circumference (433 mm), udder length (86 mm), teat opening (96º), and milk yield (947 mL d-1) than Suffolk Down ewes (410 mm, 77 mm, 93º, and 559 mL d-1, respectively). Udder circumference, udder width, udder length, cistern height and teat size... |
| Tipo: Journal article |
Palavras-chave: Mammary morphology; Teats; Dairy; Sheep. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000100011 |
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| Gallardo,María A; Pulido,Rubén; de la Barra,Rodrigo; Martínez,María E. |
| M.A. Gallardo, R. de la Barra, and M.E. Martínez. 2014. Pilot study for feeding preferences and grazing behavior in two breeds of sheep on a secondary succession of the Chiloé Archipelago. Cien. Inv. Agr. 41(2):249-254. A pilot study was undertaken to determine the pattern of feeding preferences and grazing behavior of the Chilota breed of sheep in the Chiloé Archipelago. First, eight Chilota and eight Suffolk Down ewes were faced with different numbers of plant species (offered only for 10 min), after fasting and after grazing a calafatal, a secondary succession dominated by shrubs. The experiment was repeated four times within a period of 22 d and included a 1-month pre-experimental period. Second, six Chilota and six Suffolk Down ewes, randomly selected... |
| Tipo: Journal article |
Palavras-chave: Chilota; Grazing behavior; Preferences. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000200011 |
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