4.1. Intake and Digestibility of Nutrients
This long-term feeding study demonstrated that soya waste is an excellent nutrient source that could be used as a substitute for other concentrates, without major negative effects on the growth and reproductive performance of goats. This finding could have very important implications for ruminant feeding because it is based on one complete reproductive cycle, including a growth trial. In Exp. 1, the different levels (0.5–2.0%) of soya waste in the diets did not appear to have any deleterious effects on feed intake and BW gain. Only the animals in the ad libitum group (Group D) consumed more soya waste and little grass, with signs of diarrhoea. The ingestion of a high proportion (3.0% of BW) of soya waste with a low fibre content and high water content may have caused the diarrhoea. A previous study showed that it is common for small ruminants to have diarrhoea when they are grazing on lush or wet pasture ( Schoenian, 2012), and soya waste is high in moisture. However, further research is needed to clarify whether the ingestion of the high proportion of soya waste was responsible for the diarrhoea. For this reason, we restricted soya waste intake to 2.0% DM of BW in Exp. 2, and none of the goats showed signs of diarrhoea or any other abnormal behaviour.
4.1. Intake and Digestibility of NutrientsThis long-term feeding study demonstrated that soya waste is an excellent nutrient source that could be used as a substitute for other concentrates, without major negative effects on the growth and reproductive performance of goats. This finding could have very important implications for ruminant feeding because it is based on one complete reproductive cycle, including a growth trial. In Exp. 1, the different levels (0.5–2.0%) of soya waste in the diets did not appear to have any deleterious effects on feed intake and BW gain. Only the animals in the ad libitum group (Group D) consumed more soya waste and little grass, with signs of diarrhoea. The ingestion of a high proportion (3.0% of BW) of soya waste with a low fibre content and high water content may have caused the diarrhoea. A previous study showed that it is common for small ruminants to have diarrhoea when they are grazing on lush or wet pasture ( Schoenian, 2012), and soya waste is high in moisture. However, further research is needed to clarify whether the ingestion of the high proportion of soya waste was responsible for the diarrhoea. For this reason, we restricted soya waste intake to 2.0% DM of BW in Exp. 2, and none of the goats showed signs of diarrhoea or any other abnormal behaviour.
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