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• 1. [Image] RA_PETR_OI_0228

  	Detail of bulls.; Bronze Age; Late Bronze Age
  	Citation × Citation Citation Abstract Copy Title: RA_PETR_OI_0228 Year: 1998 Detail of bulls.; Bronze Age; Late Bronze Age Title: RA_PETR_OI_0228 Year: 1998 Detail of bulls.; Bronze Age; Late Bronze Age Close

• 2. [Image] RA_PETR_TG_0941

  	Section of Large Panel with several instances of overlay: rider scratched onto an earlier leopard, leopards juxtaposed with earlier bull, and Tagar rider and horses (lower left). Deeply scraped, worn.; ...
  	Citation × Citation Citation Abstract Copy Title: RA_PETR_TG_0941 Year: 2004 Section of Large Panel with several instances of overlay: rider scratched onto an earlier leopard, leopards juxtaposed with earlier bull, and Tagar rider and horses (lower left). Deeply scraped, worn.; Late Bronze Age; Early Iron Age; Iron Age; varied; Tagar Title: RA_PETR_TG_0941 Year: 2004 Section of Large Panel with several instances of overlay: rider scratched onto an earlier leopard, leopards juxtaposed with earlier bull, and Tagar rider and horses (lower left). Deeply scraped, worn.; Late Bronze Age; Early Iron Age; Iron Age; varied; Tagar Close

• 3. [Article] Some effects of diethylstilbestrol on sexual maturation and growth of male calves

  Six experiments were conducted to determine the effects of DES implantation on preweaning performance and sexual maturation of male calves when implanted at various stages of development and different ...

  Citation × Citation Citation Abstract Copy Title: Some effects of diethylstilbestrol on sexual maturation and growth of male calves Author: Patton, Westley R. Six experiments were conducted to determine the effects of DES implantation on preweaning performance and sexual maturation of male calves when implanted at various stages of development and different sites. Calves receiving DES implants in Experiments I and II were implanted at birth, at birth and at about three months of age, or at about three months of age. Some of the calves in Experiment I were left intact until slaughter, while the remainder of the calves in the first two trials were castrated two weeks prior to weaning. Statistical analysis of data from the first trial showed that calves implanted (12 mg.) at birth gained significantly (P < .05) faster to three months of age than did non-implanted calves and held a slight advantage to weaning. An advantage in preweaning performance was not observed for implanted calves in Experiment II. However, there was a significant (P < .01) reduction in the average external diameter of seminiferous tubules in calves receiving two preweaning implants. In both trials, DES treatment caused a delay in development of secondary sex characteristics, such as crest, increased shoulder development and curly hair about the head. In Experiment IIIa there were no differences in preweaning performance and sexual maturation between bull calves implanted at birth and at three months of age and those implanted at three months of age. In yearling bulls with the same treatments (Experiment IIIb) there was a delay in the onset of semen production. Bull calves in Experiment IV received implants at birth, at three months of age, at weaning and after 110 days in the feedlot; the same treatment without the birth implant; or no DES implants. There was a trend toward increased average daily gain with increasing levels of DES. The testes weight was significantly (P < .01) decreased by DES treatment. Furthermore, testes weights of the two DES treatments were significantly (P < .05) different. There was a significant (P < .01) reduction in average external seminiferous tubule diameter with each increase in DES level. Two levels of scrotal DES implants at birth plus ear implants at three months of age were compared to two levels of ear implants at birth plus ear implants at three months of age. In this experiment (Experiment V) scrotal implants did not cause an increase in gain to three months, but there was an advantage over the controls to weaning. Gains were similar for scrotal and ear implants to weaning. At weaning there was a significant (P < .01) reduction in testes weight and average external seminiferous tubule diameter with DES treatment. Experiment VI dealt with bull and steer calves implanted with DES at three different stages of development prior to weaning. At slaughter the inside diameters of the urethras were measured at four locations. Urethra diameter was significantly (P < .01) reduced by castration. DES implants caused a significant (P < .01) increase in the inside diameter of the urethras of steers, but had no effect in bulls. Title: Some effects of diethylstilbestrol on sexual maturation and growth of male calves Author: Patton, Westley R. Six experiments were conducted to determine the effects of DES implantation on preweaning performance and sexual maturation of male calves when implanted at various stages of development and different sites. Calves receiving DES implants in Experiments I and II were implanted at birth, at birth and at about three months of age, or at about three months of age. Some of the calves in Experiment I were left intact until slaughter, while the remainder of the calves in the first two trials were castrated two weeks prior to weaning. Statistical analysis of data from the first trial showed that calves implanted (12 mg.) at birth gained significantly (P < .05) faster to three months of age than did non-implanted calves and held a slight advantage to weaning. An advantage in preweaning performance was not observed for implanted calves in Experiment II. However, there was a significant (P < .01) reduction in the average external diameter of seminiferous tubules in calves receiving two preweaning implants. In both trials, DES treatment caused a delay in development of secondary sex characteristics, such as crest, increased shoulder development and curly hair about the head. In Experiment IIIa there were no differences in preweaning performance and sexual maturation between bull calves implanted at birth and at three months of age and those implanted at three months of age. In yearling bulls with the same treatments (Experiment IIIb) there was a delay in the onset of semen production. Bull calves in Experiment IV received implants at birth, at three months of age, at weaning and after 110 days in the feedlot; the same treatment without the birth implant; or no DES implants. There was a trend toward increased average daily gain with increasing levels of DES. The testes weight was significantly (P < .01) decreased by DES treatment. Furthermore, testes weights of the two DES treatments were significantly (P < .05) different. There was a significant (P < .01) reduction in average external seminiferous tubule diameter with each increase in DES level. Two levels of scrotal DES implants at birth plus ear implants at three months of age were compared to two levels of ear implants at birth plus ear implants at three months of age. In this experiment (Experiment V) scrotal implants did not cause an increase in gain to three months, but there was an advantage over the controls to weaning. Gains were similar for scrotal and ear implants to weaning. At weaning there was a significant (P < .01) reduction in testes weight and average external seminiferous tubule diameter with DES treatment. Experiment VI dealt with bull and steer calves implanted with DES at three different stages of development prior to weaning. At slaughter the inside diameters of the urethras were measured at four locations. Urethra diameter was significantly (P < .01) reduced by castration. DES implants caused a significant (P < .01) increase in the inside diameter of the urethras of steers, but had no effect in bulls. Close

• 4. [Image] RA_PETR_TG_0405

  	Two bulls in confronting positions to form a circular image.; Late Bronze Age; Iron Age; Uncertain
  	Citation × Citation Citation Abstract Copy Title: RA_PETR_TG_0405 Year: 2001 Two bulls in confronting positions to form a circular image.; Late Bronze Age; Iron Age; Uncertain Title: RA_PETR_TG_0405 Year: 2001 Two bulls in confronting positions to form a circular image.; Late Bronze Age; Iron Age; Uncertain Close

• 5. [Image] RA_PETR_TG_0452

  	Two men apparently swinging around the heads of two confronting bulls. The leg of the bull on the left overlays an earlier, scored image. Modern mark on upper left.; Bronze Age; Late Bronze Age; modern ...
  	Citation × Citation Citation Abstract Copy Title: RA_PETR_TG_0452 Year: 2000 Two men apparently swinging around the heads of two confronting bulls. The leg of the bull on the left overlays an earlier, scored image. Modern mark on upper left.; Bronze Age; Late Bronze Age; modern (generic time frame) Title: RA_PETR_TG_0452 Year: 2000 Two men apparently swinging around the heads of two confronting bulls. The leg of the bull on the left overlays an earlier, scored image. Modern mark on upper left.; Bronze Age; Late Bronze Age; modern (generic time frame) Close

• 6. [Image] PETR_00028_SA

  	Bull over archaic three-fingered figure; Pre-Bronze Age; Late Bronze Age
  	Citation × Citation Citation Abstract Copy Title: PETR_00028_SA Year: 2005 Bull over archaic three-fingered figure; Pre-Bronze Age; Late Bronze Age Title: PETR_00028_SA Year: 2005 Bull over archaic three-fingered figure; Pre-Bronze Age; Late Bronze Age Close

• 7. [Image] PETR_00018_SA

  	Detail: boar, older unfinished bull; Bronze Age; Late Bronze Age
  	Citation × Citation Citation Abstract Copy Title: PETR_00018_SA Year: 2005 Detail: boar, older unfinished bull; Bronze Age; Late Bronze Age Title: PETR_00018_SA Year: 2005 Detail: boar, older unfinished bull; Bronze Age; Late Bronze Age Close

• 8. [Image] RA_PETR_OI_0387

  	Fractured boulder, reassembled, with many images including a large fine bull and a more recent, crude rider. Techniques.; Bronze Age; Early Iron Age; varied
  	Citation × Citation Citation Abstract Copy Title: RA_PETR_OI_0387 Year: 1998 Fractured boulder, reassembled, with many images including a large fine bull and a more recent, crude rider. Techniques.; Bronze Age; Early Iron Age; varied Title: RA_PETR_OI_0387 Year: 1998 Fractured boulder, reassembled, with many images including a large fine bull and a more recent, crude rider. Techniques.; Bronze Age; Early Iron Age; varied Close

• 9. [Image] PETR_00012_SA

  	Massive bull walking right; darkened patina; Late Bronze Age; Early Iron Age
  	Citation × Citation Citation Abstract Copy Title: PETR_00012_SA Year: 2005 Massive bull walking right; darkened patina; Late Bronze Age; Early Iron Age Title: PETR_00012_SA Year: 2005 Massive bull walking right; darkened patina; Late Bronze Age; Early Iron Age Close

• 10. [Image] RA_PETR_OI_0132

  	Unfinished man leading a bull.; Late Bronze Age; Iron Age; Uncertain
  	Citation × Citation Citation Abstract Copy Title: RA_PETR_OI_0132 Year: 1997 Unfinished man leading a bull.; Late Bronze Age; Iron Age; Uncertain Title: RA_PETR_OI_0132 Year: 1997 Unfinished man leading a bull.; Late Bronze Age; Iron Age; Uncertain Close