Fecha/hora: 31/05/2024 22:01:18

Biblioteca(s): | INIA Las Brujas; INIA Tacuarembó.
Fecha corriente: | 09/11/2017
Fecha de la última actualización: | 25/11/2019
Autoria: | DE BARBIERI, I.; MONTOSSI, F.; VIÑOLES, C.; KENYON, P. R.
Afiliación: | LUIS IGNACIO DE BARBIERI ETCHEBERRY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CAROLINA VIÑOLES GIL, Estación Experimental Bernardo Rosengurtt, Universidad de la República, Cerro Largo, Uruguay; PAUL R. KENYON, Sheep Research Centre, Massey University, Palmerston North, New Zealand.
Título: | Time of shearing the ewe not only affects lamb live weight and survival at birth and weaning, but also ewe wool production and quality.
Complemento del título: | Research article.
Año de publicación: | 2017
Fuente/Imprenta: | New Zealand Journal of Agricultural Research, 2017, p. 1-10.
ISSN: | 00288233
DOI: | 10.1080/00288233.2017.1388825
Idioma: | Inglés
Notas: | Article history: Received 16 Jun 201; Accepted 03 Oct 2017; Published online: 24 Oct 2017.

Contenido:

ABSTRACT.
During a four-year period, mature ewes were either shorn in mid-pregnancy or post-partum to study impacts on lamb live weight and survival. Furthermore, placental measurements were collected post-partum from a subset of single-bearing ewes and yearly fleece weights and wool samples were collected from a subset of single- and twin-bearing ewes. Lambs born to ewes shorn in mid-pregnancy were heavier (p&#8201;<&#8201;.05) and displayed greater (p&#8201;<&#8201;.05) survival than those born from post-partum shorn ewes regardless of litter size. Shearing treatment had no effect (p&#8201;>&#8201;.05) on the weight of the placenta, and diameter or the weight of the cotyledons. However, the number of cotyledons was greater (p&#8201;<&#8201;.05) in mid-pregnancy than post-partum shorn ewes. Ewes shorn in mid-pregnancy produced lighter (p&#8201;<&#8201;.05) fleeces with greater (p&#8201;<&#8201;.05) yields. The fleece displayed shorter (p&#8201;<&#8201;.05) staple length, stronger staple strength (p&#8201;<&#8201;.05), and was less (p&#8201;<&#8201;.05) bright with poorer (p&#8201;<&#8201;.05) colour than those shorn in post-partum.
© 2017 The Royal Society of New Zealand

Palabras-Clave: | LAMB BIRTH WEIGHT; LAMB SURVIVAL; MID PREGNANCY; MID-PREGNANCY; PLACENTA; WOOL.
Thesagro: | CORDERO; LANA; OVEJA.

Categoría del tema:

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L01 Ganadería

Registro original: | INIA Las Brujas (LB)

Ejemplares:

LB - (101490-1) - PXI - AP - DD - PP/NZJAR/2017 -  -  - DIS
TBO - (102138-1) - PXI - AP - DD - PP/NZJAR/2017 -  -  - DIS