Replacement of soybean meal with levels of inclusion of soya waste in the diet of growing goats
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Replacement of soybean meal with levels of inclusion of soya waste in the diet of growing goats Mohammad Mijanur Rahman 1,2 & Ramli Bin Abdullah 3 & Khairiyah Binti Mat 1,2 & Genki Ishigaki 4 & Maryana Mohamad Nor 1,2 & Ryo Akashi 5 Received: 16 January 2020 / Accepted: 15 June 2020 # Springer Nature B.V. 2020
Abstract An experiment was conducted to investigate the effect of replacing soybean meal with soya waste at different levels on intake, digestibility and growth in goats. Eighteen male goat kids with initial body weight (BW) of 13.0 kg were distributed equally to three dietary groups. They were fed Napier grass (Pennisetum purpureum) and concentrate mixture, and each goat was assigned to an individual pen. Soybean meal in the concentrate mixture was replaced with soya waste at 0% (T1), 50% (T2) and 100% (T3) levels in respective dietary groups. These diets were isocaloric and isonitrogenous. Results showed that animals fed T3 diet exhibited higher Napier grass intake than those fed T1 or T2 diet. There was no influence on total intakes of dry matter (DM), organic matter (OM), crude protein (CP), metabolic BW, per cent BW and metabolisable energy by the dietary groups. However, there was an increasing trend on intake and digestibility of neutral detergent fibre (NDF) with increasing levels of soya waste in the diets. Animals fed T3 diet showed higher intake and digestibility of NDF than those fed T1 diet. There was no influence of the dietary groups on digestibilities of DM, OM and CP. Similarly, there was no effect of them on the final BW, total BW gain, daily BW gain, feed conversion ratio and feed cost. Soya waste can replace 100% soybean meal in diets for growing goats, because no change was observed in nutrient intake, digestibility and growth performance; inclusion of soya waste enhanced the intake and digestibility of NDF. Keywords Digestibility . Feed conversion ratio . Feed intake . Growth . Napier grass . Soya waste
Introduction Due to food-feed competition between humans and livestock, the feed price of concentrates for livestock rearing is * Mohammad Mijanur Rahman [email protected] 1
Faculty of Agro Based Industry, Universiti Malaysia Kelantan, Jeli Campus, 17600 Jeli, Kota Bharu, Kelantan, Malaysia
2
Institute of Food Security and Sustainable Agriculture, Universiti Malaysia Kelantan, Jeli Campus, 17600 Jeli, Kota Bharu, Kelantan, Malaysia
3
Faculty Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Kampus Besut, 22200 Besut, Kuala Terengganu, Terengganu, Malaysia
4
Sumiyoshi Livestock Science Station, Field Science Education Research Center, Faculty of Agriculture, University of Miyazaki, 10100-1 Shimanouchi, Miyazaki 880-0121, Japan
5
Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen kibanadai Nishi, Miyazaki 889-2192, Japan
increasing. As a result, scientists and farmers are trying to find alternative feed sources from agro-industrial manufacturing companies. To begin with, soybean meal is a widely used protein source in livestock feeding
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