The Studies On The Energy And Protein Requirements Of Fattening Crossbred Boer Goats

In order to give full play to the Boer goat heterosis, Fattening periodthrough research crossbred Boer goats of the wave energy and proteinnutritional requirements parameters, Screening of a better economic efficiencyand the energy mix of protein teed supplements, with a view to keeping thescientific theoretical basis and provide production guidance.Experiment 1: Protein test a crossbred Boer goats of different energy levelsof dietary protein and nutritional parameters of the test requirementSixteen fattening crossbred male Boer goats F₁( Bore♂×Longlin♀)weaned at the age of 3 month with meanbody weight of 15.47±1.56kg wereused to Study. A 4×4 Latin square experiment design was conducted to studythe energy and protein requirements of stall-feeding crossbred Boer goats fedthe four different diets based on recommendation of nutrients requirements ofNRC(1981).The results indicated that four different diets ration the relationshipbetween DMI and average daily gain (â–³W,g/d) and metabolic weight (W^0.75,kg)is DMI (g/d)=181.3W^0.75-0.61â–³W- 696.2 (r=0.9287). The predictionequations of nutritional requirements about Gross energy (GE), digestibleenergy (DE) and crude protein (CP) for stall-feeding growing crossbred Boer goats were:CP (g/d)=19.56 W^0.75+0.25â–³W-120.6 (r=0.7836)GE (MJ/d)=2.98 W^0.75+0.023â–³W-13.19 (r=0.8257)DE (MJ/d)=1.26 W(0.75)-0.006â–³W + 1.96 (r=0.6236)For the stall-feeding growing crossbred Boer goats, aged at 3～6 months,Metabolic rate of gross energy of the diets is 0.49; digestibility of crude proteinis 0.63: The protein requirement of per live weight gain form eat goats is 0.32gPD/g gain (PD, protein deposited).Experiment 2: Fattening crossbred male Boer goats slaughter fatteningperiod of performanceChoice within each weight close to the average weight of a healthy ramthrough in the slaughter rate, the rate of neat, hydraulic systems, Tenderness andother indicators to measure crossbred Boer lamb production levels and meatquality.The results show: relative to the feed the first diet crossbred Boer goats,dietary 2nd,third, fourth groups were slaughtered increased 3.59%,1.88%,4.93%;legs were increased by 2.88%, 1.89% lower, higher 9.63%; Dressing ratedropped to 0%,3.41% rose 1.20% Carcass Dressing rates were lower3.49%,5.81%,3.58%; The rate of bone and meat increased 10.95%, 6.38% lower,raising 15.49%; Ocular area increased 1.77%, 0.98% lower, rising 6.08%. Wecan conclude that dietary nutrition as raising the level of their meat, the betterthe performance, especially the energy level rises, on the sheep meat production performance greater impact; Through the red, pH, conductivity, hardness, andother indicators to the determination of come to a different diet of Poron hybridsheep meat little impact.In short, drawn the fourth diet group best formula to better adapt to thedevelopment of Guangxi goats status.