performance of rearing female hoggets under different feeding strategies desempenho de cordeiras na recria submetidas a diferentes estratégias alimentares

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ID: 181692
2011
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Abstract
The objective of this study was to evaluate the performance of Texel × Ile de France female hoggets on pearl millet (Pennisetum americanum (L.) Leeke) pastures fed supplementation with cassava meal or corn gluten. It was used a completely randomized experimental design, with three treatments (feed strategies) and two area replications. Feed strategies consisted of supplementation of the pastures with cassava meal or corn gluten in comparison to exclusive pasture. Supplements were given daily at 9:00 a.m. at quantity of 1% of the body weight (BW). The lambs on corn gluten supplementation presented greater daily weight gain and greater per area weight gain. Use of supplementation did not permit to increase pasture stocking rate, however. In vitro digestibility and chemical composition of the harvested forage was similar (crude protein, neutral detergent fiber) among groups. At the end of the experiment, all feed strategies were efficient in promoting weight greater than 60% of the mature weight, showing that the lambs are able for mating. Body condition score (BCS) of lambs under cassava meal supplementation was 3.0 whereas body composition score of the other lambs was 2.8. Exclusive use of pearl millet can provide dry matter requirement of the lambs.
Este estudo foi realizado para avaliar o desempenho de cordeiras Texel × Ile de France em pastagem de milheto (Pennisetum americanum (L.) Leeke) recebendo suplementação com farinha de mandioca ou glúten de milho. O delineamento experimental foi inteiramente casualizado, com três tratamentos (estratégias alimentares) e duas repetições de área. As estratégias alimentares consistiram da suplementação da pastagem com farinha de mandioca ou glúten de milho em comparação à pastagem exclusiva. Os suplementos foram fornecidos diariamente, às 9 h, em quantidade equivalente a 1% do peso vivo (PV). As cordeiras sob suplementação com glúten de milho apresentaram maior ganho de peso diário e por área. A utilização de suplementos, no entanto, não permitiu aumentar a taxa de lotação da pastagem. A digestibilidade in vitro e a composição bromatológica da forragem colhida foi semelhante (proteína bruta, fibra em detergente neutro) entre os grupos. Ao final do experimento, todas as estratégias alimentares foram eficientes para promover pesos superiores a 60% do peso adulto, indicando que as cordeiras estão aptas para o início do encarneiramento. O escore de condição corporal (ECC) das cordeiras sob suplementação com farinha de mandioca foi de 3,0, enquanto o das demais foi 2,8. O uso exclusivo de pastagem de milheto é capaz de suprir as exigências de matéria seca de cordeiras.
Reference Key
jochims2011revistaperformance Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Felipe Jochims;Cleber Cassol Pires;Alexandre Lins;Luana Cortez Zago;Guilherme Mello Jahn;Anna Carolina Cerato Confortin
Journal european journal of lipid science and technology
Year 2011
DOI
10.1590/S1516-35982011000600019
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000600019
Keywords
body condition score corn gluten meal

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