Influence of unilateral castration and increased plane of nutrition on sexual development of Holstein bulls. I. Growth and sperm production

Sixty-five Holstein bull calves were used to study the effects of unilateral castration (UC) and increased plane of nutrition on the growth and development of the reproductive system. Bulls were slaughtered at 1 wk., 2, 4, 8 and 16 months. Half of each slaughter group above one week was unilaterally...

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Veröffentlicht in:Theriogenology 1980-07, Vol.14 (1), p.49-58
Hauptverfasser: Barnes, M.A., Longnecker, J.V., Charter, R.C., Riesen, J.W., Woody, C.O.
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container_end_page 58
container_issue 1
container_start_page 49
container_title Theriogenology
container_volume 14
creator Barnes, M.A.
Longnecker, J.V.
Charter, R.C.
Riesen, J.W.
Woody, C.O.
description Sixty-five Holstein bull calves were used to study the effects of unilateral castration (UC) and increased plane of nutrition on the growth and development of the reproductive system. Bulls were slaughtered at 1 wk., 2, 4, 8 and 16 months. Half of each slaughter group above one week was unilaterally castrated at 7 days of age. Half of the bulls remaining at 6 months of age received 90% of their recommended daily TDN allowance while the remainder received 120%. Compensatory hypertrophy was evident as early as 2 months and the degree of compensation increased for the duration of the experiment (Age × UC, P
doi_str_mv 10.1016/0093-691X(80)90133-8
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title Influence of unilateral castration and increased plane of nutrition on sexual development of Holstein bulls. I. Growth and sperm production
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