Nutritional quality of wet distillers’ grains co–ensiled with whole–plant maize and its feeding value for lambs



Título del documento: Nutritional quality of wet distillers’ grains co–ensiled with whole–plant maize and its feeding value for lambs
Revista: Scientia Agricola
Base de datos: PERIÓDICA
Número de sistema: 000455472
ISSN: 0103-9016
Autores: 1
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Instituciones: 1University of Pretoria, Department of Animal Sciences, Pretoria, Transvaal. Sudáfrica
Año:
Volumen: 79
Número: 2
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, analítico
Resumen en inglés The high moisture content of wet distillers’ grains with solubles (WDGS) has limited its feeding value despite the relatively high nutritive value. The co–ensiling with whole–plant maize, as a complementary feed, was evaluated for growing lambs by formulating diets whose contents were: whole plant maize silage (WPMS) + sunflower oilcake meal (SOM) (control, WPMS + SOM), whole plant maize silage + dried distillers’ grains (WPMS + DDGS), and whole–plant maize (WPM) co–ensiled with WDGS (WPM – WDGS). Rumen fermentation parameters and in situ degradability of the diets were evaluated using three cannulated Merino wethers in a cross over 3 × 3 Latin square design experiment that lasted 39 days. Concurrently, feed intake and growth performance of South Africa Mutton Merino lambs (29.7 ± 3.6 kg) were evaluated over 45 days. The WPMS + DDGS diet had a lower rate of dry matter degradation (p < 0.05) compared to the WPMS + SOM and WPM–WDGS diets. However, the rapidly fermentable fraction, as well as the progressively fermentable fraction of the diet dry matter, was not different (p > 0.05). No differences in rumen volatile fatty acid, ammonia nitrogen concentration nor rumen pH of the wethers as a result of diet differences were observed. Lambs consuming the WDGS–based diet had a lower average daily intake and average daily gain (p < 0.05) compared to lambs consuming the DDGS and WPMS–based diets. However, the feed conversion ratio was not affected by diet differences (p > 0.05). In conclusion, co–ensiling WDGS with whole–plant maize provides the opportunity for the long–term storage and utilization of WDGS in lamb feeding
Disciplinas: Medicina veterinaria y zootecnia
Palabras clave: Ovinos y caprinos,
Nutrición animal,
Destilerías,
Maíz,
Corderos,
Rumen
Keyword: Sheep and goats,
Animal nutrition,
Distilleries,
Maize,
Lambs,
Rumen
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