Dietary Fitting Protein And Energy Requirements On Growing Strain Boar

In order to bring boars heterosis fully into play, with the experiment of wave energy and protein nutritional requirements parameters of growing period strain boars, to screen a better economic efficiency and the appropriate levels of energy and protein, in order to offer the scientific theoretical basis and provide production guidance.Experiment 1: Protein and energy requirement of strain wild boar.Fifty-four growing strain wild boarweaned at the age of 50 days with mean body weight of (8.924±0.609kg) were used to Study, and both feed energy and protein divides 3 levels based on recommendation of nutrients requirements of lean type growing-finishing pigs NRC(1998) and Chinese(2004): energy levels 12.76MJ.DE/kg,13.17MJ.DE/kg,13.6 MJ DE/kg; protein levels: 14%,16%,18%. 3×3 cross classification design was used, and divides 9 treatment, every treatment divides 2 duplication, and each treatment has no significant difference. Every feeding period was 92days ,including 7 days prefeeding and 85 days collecting samples, study the energy and protein requirements of stall-feeding Strain wild boarfed the nine different diets.The results showed that:1. The effect to diet digestibility of different energy level: the total energy, crude protein,dry matter,high-energy group and that group than in the low-energy group increased by 3.66% and 2.55% (P<0.05) , by 3.26% and 1.29% (P <0.05), by 3.01% and 1.74%. Different levels of dietary protein digestibility of: the total energy, crude protein,dry matter, high-protein group and the protein group than in the low-protein group were increased by 1.95% and 1.36% (P <0.05), by 2.01% (P <0.05) and 0.7%; by 1.55% (P <0.05) and 0.92%.2.The effect of different energy level to growth performance of strain wild boar performance: the average end weight, high-energy level and the level than in the low energy levels can be increased by 1.40 kg and 1.44 kg (P <0.05), The average daily weight gain, high energy level and the level than in the low energy levels can be increased by 0.16kg (P <0.05); Feed/Gain, high, medium to low energy levels than the reduced level of 0.22(P <0.05). The effect of different protein level to growth performance of strain wild boar performance: the average feed intake,low-protein levels is significantly higher than high-protein by 0.031kg and 0.023kg(P<0.05),Feed/Gain, low-protein level is significantly higher than high-protein and mid-protein by 0.18,0.11(P <0.05).3.The effect of different energy level to blood biochemical indicators of strain wild boar performance: blood glucose (GLU), serum triglyceride (TG), total serum cholesterol (T-Cho), high energy level and the level than in the low energy levels increased by 1.18mmol/L and 0.38mmol/L, 0.18mmol / L And 0.04mmol/L, 0.16mmol/L and 0.02mmol/L;three levels has significantly difference(P<0.05),The effect of different protein level to blood biochemical indicators of strain boar. performance: serum total protein (TP), serum albumin (Alb), blood urea N (BUN),high-protein levels than low levels-protein levels increased by 11.73g/L (P<0.05) and 7.64g/L, 4.33g/L and 2.03g/L (P<0.05) , 6.23mmol/L (P<0.05) and 1.45mmol/L (P<0.05) .Experiment 2: slaughter capability of growing strain wild boar.One weight close to the average weight strain wild boar were selected, By measuring the slaughter rate, net-flesh rate, tenderness, and other indicators to measure the strain wild boar meat and its production level.The results showed that:1.The effect to slaughter capability of different energy level: fat content, The lean meat rate, The tenderness, high energy level is higher than mid energy and low energy levels by 6.64% and 8.16%, by 2.5% and 3.23%, by 0.91% and 1.61%.and High energy level and low energy levels has significantly difference (P<0.05),The backfat thickness,tenderness,marbling,high energy level is higher than low energy levels by 0.41cm,by 0.19%,by 0.53,and has significant difference. 2. The effect to slaughter capability of different protein level: The Lean meat percentage,Ocular flesh area,high protein level is higher than low protein levels by 3.6%, by 2.1%,and has significant difference, The tenderness, muscle fiber, high-protein level higher than mid energy and low energy levels by 1.42% and 2.2%, by 13.67um and 27um.Sum up the experiment, while treatment of DE is 13.17MJ.DE/kg and CP is 16%, the production performance is better, which also meets the nutrition needs of Guangxi strain wild boar nutritional needs.