摘要
对杜洛克×皖北猪杂种适宰体重的试验结果表明,肥育猪的增重速度随体重增长而提高,70千克时日增重696.7克,90千克时提高到810.7克,增长幅度达10.8％,体重90千克以后增重速度虽仍有一定上升,但增长的幅度平均仅0.5％;饲料效率随体重增大逐渐降低,70千克时与90千克相比,每增重1千克少耗料0.62千克,90千克与110千克相比,又少耗0.84千克;胴体瘦肉率随体重增长逐渐降低,体重每增加10千克,瘦肉率降低1.24％,其间的相关系数为-0.7499;脂肪率则相反,相关系数为0.6337。随体重升降的转折点在90千克。90千克时的利润函数最高,综合经济效益最好。故90千克屠宰是适宜的,最好不超过100千克。
Fifty seven Duroc× Wanbei pigs have been slaughted in search of optimum weight for marketing. The results show that, the daily gain at 70, 80, 90, 100 and 110kg of body weight are measured as 696.70, 731.62, 810.73, 806.56 and 821.50g and Feed/Gain measured as 4.22, 4.44, 4.84, 5.23 and 5.68 respectively. On average, carcass lean % is decreased by 1.24 % and Feed/Gain increased by 0.365 after each 10kg increment during the period of 70kg through 110kg. The correlation coefficient between Lean % and Weight is -0.7499 and that between fat % and weight 0.6337. A conclusion may be suggested that 90kg is the optimum weight for max-profit marketing.
出处
《畜牧兽医学报》
CAS
CSCD
北大核心
1990年第2期144-149,共6页
ACTA VETERINARIA ET ZOOTECHNICA SINICA
