Establishment of Efficient Energy Prediction Models of Feed Ingredients for Ding'an Pigs and Ding'an Black Pigs Based on Database of Nutritional Values of Duroc×Landace×Yorkshire Pigs
The purpose of this study was to establish a feed nutritional value database and effective energy pre-diction model for Ding'an black pigs and Ding'an pigs by evaluating the difference of effective energy and nutrient utilization of conventional feed ingredients such as corn and soybean meal and local feedstuff in Hainan Province.A total of 90-day-old(castrated males)Duroc×Landace×Yorkshire(DLY)pigs,Ding'an pigs and Ding'an black pigs were randomly assigned to 10 treatments based on a 3×10×6 incomplete Latin square de-sign.Each treatment had 6 replicates with 1 pig per replicate.The effective energy value of feed ingredients was determined by total collection method of feces and urine as well as nested analysis method.The results showed that the metabolizable energy of corn,soybean meal,cassava,sweet potato,coconut meal,palm meal,cassa-va residue,pomace(Noni),unite bran and coconut to DLY pigs was 13.32,14.76,12.22,11.99,16.29,10.01,6.38,5.92,5.25 and 18.37 MJ/kg,respectively.Metabolizable energy of Ding'an pigs was 13.53,15.04,12.13,12.49,16.37,10.64,6.70,7.73,5.37,18.88 MJ/kg,respectively.The metabolizable ener-gy of Ding'an black pigs was 13.52,15.00,12.46,12.67,16.89,10.99,7.34,6.69,6.79,18.85 MJ/kg,respectively.The metabolizable energy of palm meal,cassava residue,pomace and unite bran of DLY pigs was significantly lower than that of Ding'an pigs and Ding'an black pigs(P＜0.05).The digest-ibility of organic matter,neutral detergent fiber and acid detergent fiber in feed ingredients of Ding'an black pigs and Ding'an pigs was significantly higher than that of DLY pigs(P＜0.05).Based on the effective energy of DLY pigs,the optimal prediction equation for metabolizing energy of Ding'an black pigs was as follows:MEDing'an black pigs=0.945×MEDLY+0.11×NDF+0.279,and the optimal prediction equation for metabolizing ener-gy of Ding'an pig was as follows:MEDing,an pigs=0.871×DEDLY 1.39×Ash+1.828,and where ME was metabo-lizable energy;NDF was neutral detergent fiber;DE was digestive energy;Ash was crude ash.In summary,the digestion and utilization capacity of dietary fiber in Ding'an black pigs and Ding'an pigs are higher than those in DLY pigs,and the effective energy values of fiber-rich feed ingredients in Ding'an black pigs and Ding'an pigs are higher than those in DLY pigs.In summary,Ding'an black pigs and Ding'an pigs have higher digestive and utilization abilities for feed fiber than DLY pigs,and the effective energy value of fibrous feedstuffs in Ding'an black pigs and Ding'an pigs is higher than that in DLY pigs.According to this nutrient utilization difference rule,a model based on predicting the effective energy of local pigs'feed with that of DLY pigs can be established,which will help promote the improvement of the effective energy value database of Ding'an black pigs and Ding'an pigs.[Chinese Journal of Animal Nutrition,2024,36(9):5981-5993]
feed ingredientseffective energydifferential digestibilityDuroc×Landace×Yorkshire pigsDing'an black pigsDing'an pigsprediction model
万方数据
维普
