Fecha/hora: 03/06/2024 06:36:05

Biblioteca(s): | INIA Las Brujas; INIA Tacuarembó.
Fecha corriente: | 12/12/2018
Fecha de la última actualización: | 22/11/2019
Autoria: | RAMOS, Z.; DE BARBIERI, I.; VAN LIER, E.; MONTOSSI, F.
Afiliación: | ZULLY MARGOT RAMOS ALVEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LUIS IGNACIO DE BARBIERI ETCHEBERRY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; E. VAN LIER, Universidad de la República (UdelaR)/ Facultad de Agronomía; Estación Experimental Facultad de Agronomía Salto, Uruguay; FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.
Título: | Body and wool growth of lambs grazing on native pastures can be improved with energy and protein supplementation.
Año de publicación: | 2019
Fuente/Imprenta: | Small Ruminant Research, February 2019, volume 172, pages 92-98.
ISSN: | 0921-4488
DOI: | 10.1016/j.smallrumres.2018.11.009
Idioma: | Inglés
Notas: | Article history: Received 16 June 2018 // Received in revised form 5 October 2018 // Accepted 8 November 2018 // Available online 08 November 2018.

Contenido:

ABSTRACT.
In a completely randomized experimental design with two replicates, the impact of iso-energetic supplements with different protein levels on body and wool growth was studied in eighty crossbreed (Merino Dohne × Corriedale) castrated male lambs (24.5 ± 4.4 kg of body weight, BW, 4 months of age) in summer (103 days) for three years. Animals were randomly allotted to four treatments (n = 20). All lambs grazed native pastures (NP) and animals in three treatments were daily supplemented (2% BW) with an iso-energetic supplement of different CP levels: control (CON, non supplemented), 12% CP (12CP), 16% CP (16CP) and 20% CP (20CP). Supplemented lambs had higher final BW (36.0, 36.4 and 37.7 kg for 12, 16 and 20CP, respectively) than CON lambs (28.9 kg) (P < 0.05). Among supplemented lambs, the 12CP group had the lowest BW (P < 0.05), without differences between 16CP and 20CP. Supplemented lambs had greater body-weight gain, body condition score, rib eye area and fat thickness than CON lambs (P < 0.05). Wool growth was 40% greater in supplemented lambs compared to CON lambs (P < 0.05), while 20CP animals had the greatest growth. Iso-energetic supplementation with different CP (12, 16 and 20%) levels improved body and wool growth of lambs grazing NP compared to non-supplemented lambs in summer after weaning. Wool growth was greatest when 20% CP supplement was used. 
© 2018 Elsevier B.V.

Palabras-Clave: | BODY CONDITION SCORE; BODY WEIGHT; GRAZING; SHEEP.
Thesagro: | OVINOS.
Categoría del tema: | L02 Alimentación animal
Registro original: | INIA Las Brujas (LB)

Ejemplares:

LB - (101747-1) - PXI - AP - DD - PP/SMALL RUMINANT RESEARCH/2019 -  -  - DIS
TBO - (102795-1) - PXI - AP - DD - PP/SMALL RUMINANT RESEARCH/2019 -  -  - DIS