<b>Intake, digestibility, performance and carcass characteristics of ewes fed crambe replacing soybean meal in the diet

Abstract

ABSTRACT. The use of alternative sources of protein for ruminant can alter productivity and reduce costs in animal production. The aim of this study was to evaluate the performance, apparent digestibility and quantitative characteristics of carcass components of ewes fed increasing levels (0, 50, 100 and 150 g kg -1 dry matter) of crambe crushed in the diets. Twenty-four culling ewes were distributed in a completely randomized design. All animals were kept in a shed, with individual stalls equipped with feeder, drinker and concrete floor covered with rice hulls. The animals received corn silage as roughage and diets were isoenergetic with 700 g kg -1of TDN. Animals were slaughtered when reached a body condition score of 3.5 points. The dry matter intake (948.53 g day -1) and average daily gain (0.15 kg day -1 ) were not influenced by the inclusion of crambe crushed in the diet. The crambe crushed increased ether extract digestibility and decreased crude protein intake and digestibility. There was no effect of the levels of crambe crushed on carcass characteristics and non-carcass components but rather a reduction in the cold carcass yield. Total replacement of soybean meal with crambe crushed in the diet for ewes did not alter performance, carcass and non-carcass characteristics.Keywords: byproduct; ether extract; oilseeds; Crambe abyssinica.Consumo, digestibilidade, desempenho e características de carcaça de ovelhas alimentadas com crambe em substituição à farelo de soja RESUMO. O uso de fontes proteicas alternativas para ruminantes pode alterar a produtividade e reduzir os custos na produção animal. O objetivo da pesquisa foi avaliar o desempenho, a digestibilidade aparente e as características quantitativas dos componentes de carcaça das ovelhas alimentadas com níveis crescentes (0, 50, 100 e 150 g kg -1de matéria seca) de torta de crambe nas dietas. Foram distribuídas 24 ovelhas em um delineamento inteiramente casualizado. Todos os animais foram mantidos em instalação, com baias individuais equipadas com cocho, bebedouro e chão de concreto coberto com cascas de arroz. Os animais receberam silagem de milho como forragem e as dietas foram isoenergéticas com 700 g kg ) não foram influenciados pela inclusão de torta de crambe na dieta. A torta de crambe aumentou a digestibilidade do extrato etéreo e diminuiu a ingestão e digestibilidade da proteína bruta. Não houve efeito da torta de crambe nas características da carcaça e nos componentes não carcaça, no entanto houve redução no rendimento da carcaça fria. A substituição total da farinha de soja e a torta de crambe na dieta para as ovelhas não alteraram as características de desempenho, carcaça e não carcaça.Palavras-chave: subproduto; extrato etéreo; oleaginosas; Crambe abyssinica.

Cultivated Pastures Affect Nutrient Intake and Feeding Behavior of Sheep

“…The difference in intake between the studies can be attributed to the use of concentrated supplements. The intake of this nutrient is the variable that most affects animal performance (Goes et al, 2018). Supplementation can be viable and important in the periods of the seasonality of pastures (Sousa et al, 2018).…”

Crambe cake protein as a replacement for soybean meal protein: Intake, digestibility, and ruminal parameters in lamb diets

“…In the production of biodiesel, some by-products are generated, which, although considered pollutants, are available and presenting a residual oil content higher than that contained in the crambe meal (Canova, 2015). The crambe cake contains 870-940 g/kg dry matter, 240-340 g/kg crude protein, 180-290 g/kg ether extract, 300-550 g/kg neutral detergent fibre (NDF), and 190-244 g/kg acid detergent fibre (ADF) (Brás et al, 2014;Canova et al, 2015;Silva et al, 2015;Goes et al, 2016;Pegoraro et al, 2017;Goes et al, 2018). The crambe cake contains 50.0-77.4 mmol/kg DM of glucosinolates and 56% erucic acid of total fatty acids (Böhme et al, 2005).…”

The effects of minor oilseeds cakes on rumen metabolism and productive performances of ruminants

“…The oil extraction process retrieves large quantities of by-products, with variable content of residual oil (upon extraction efficiency), which can be good sources of proteins but also energy for animal's nutrition. Such by-products can be successfully included in ruminant's diet with lower costs than soya imports (Yehudi et al, 2019;de Goes et al, 2018;Liu et al, 1994). Beside the protein and energy supply, some oilseeds by-products are rich in some bioactive compounds, such as fatty acids or polyphenol compounds that may have beneficial effects when fed to animals (Kenari et al, 2014;Böhme et al, 2005;Mukhopadhyay & Ray, 2001).…”