Nutritional quality of wet distillers' grains co-ensiled with whole-plant maize and its feeding value for lambs
Moyo, Robin; Niekerk, Willem Adriaan van; Hassen, Abubeker; Toit, Cornelius Jacobus Lindeque du; Coertze, Roelf; Adejoro, Festus Adeyemi.
Sci. agric;
79(2): e20200122, 2022. tab, ilus
Artigo
em Inglês
| VETINDEX
| ID: biblio-1290183
Resumo
The high moisture content of wet distillers' grains with solubles (WDGS) has limited its feeding value despite the relatively high nutritive value. The coensiling with wholeplant 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 wholeplant maize (WPM) coensiled 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 WPMWDGS 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 WDGSbased diet had a lower average daily intake and average daily gain (p < 0.05) compared to lambs consuming the DDGS and WPMSbased diets. However, the feed conversion ratio was not affected by diet differences (p > 0.05). In conclusion, coensiling WDGS with wholeplant maize provides the opportunity for the longterm storage and utilization of WDGS in lamb feeding.
Biblioteca responsável:
BR68.1
Localização: BR68.1