Gonadal sperm reserve in purebred Landrace and Large White boars of high average daily gain.

摘要: Abstract The present study investigated the effects of average growth rate (AGR) levels and age on number sperm cells per gram testis parenchyma gonadal reserve in Landrace (LD) Large White (LW) boars. In Experiment 1, breed (LD, LW), level AGR from birth up to 90 days (Level 1: 384±32 g/day; Level 2: 512±22 g/day; 3: 624±41 g/day), (13, 15, 17, 19 21 weeks) testicular cell concentration were evaluated. Data analyzed under a 2×3×4 factorial design. There significant associated with ( P >0.05) parenchyma. increased was greater LW than LD young boars, mainly those weeks age. 2, effect two 649–694 g/day; 813–885 g/day) 100 kg body weight using 59 purebred boars castrated at 23, 25, 29 33 Age significantly affected tissue >0.05). It concluded that is influenced by their age, but not AGR.