Feedlot Performance and Carcass Characteristics of Young Bulls and Steers Castrated at Four Ages

Champagne, J. R.; Carpenter, James W.; Hentges, J. F.; Palmer, A. Z.; Koger, M.

doi:10.2527/jas1969.296887x

Cited by 46 publications

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“…The study reported by Heaton et al (2004) showed the same results: the steers castrated at weaning had the same live weight and the same hot carcass weight as those castrated at 3 months of age. Equivalent results were also obtained on steers castrated at 70, 230, 320 or 410 kg (Worrel et al, 1987) and on steers castrated at birth or at 2, 7 or 9 months of age (Champagne et al, 1969). Moreover, whatever the castration age, steers have the same dressing percentage as already reported by Heaton et al (2004) and Champagne et al (1969), when comparing steers castrated at 3 and 8 months or steers castrated at birth and at 2, 7 or 9 months of age, respectively.…”

Section: Discussionsupporting

confidence: 83%

“…Equivalent results were also obtained on steers castrated at 70, 230, 320 or 410 kg (Worrel et al, 1987) and on steers castrated at birth or at 2, 7 or 9 months of age (Champagne et al, 1969). Moreover, whatever the castration age, steers have the same dressing percentage as already reported by Heaton et al (2004) and Champagne et al (1969), when comparing steers castrated at 3 and 8 months or steers castrated at birth and at 2, 7 or 9 months of age, respectively. At slaughter, both steer groups had an equivalent fattening score, as already reported by Champagne et al (1969), Worrel et al (1987) and Heaton et al (2004).…”

Section: Discussionsupporting

confidence: 83%

“…As reported by Champagne et al (1969), Bagley et al (1989) and Heaton et al (2004), differences in feedlot performances among steers castrated at different ages before puberty were not significant. Moreover, Worrel et al (1987) showed that average daily gain during the growing phase was no different among the castration weights of 70, 320 or 410 kg.…”

Section: Discussionsupporting

confidence: 53%

“…Taking the whole life cycle into consideration, 10-month castrated steers have really only preserved few advantages of their slightly higher growth rate before weaning. Indeed, the small weight advantage held by all the males between birth and 10 months of age was not maintained until the slaughter, as already reported by Champagne et al (1969) and Bagley et al (1989). The two groups of steers, which have equivalent live weights, were also characterised by equivalent carcass weights.…”

Section: Discussionmentioning

confidence: 58%

“…Castration at a young age has seldom been compared with castration at an age close to puberty except for the study of Champagne et al (1969). Most of the results concern the research into delayed castration in order to take advantage of the higher growth potential of noncastrated males, but no convincing results on weight gain improvement were noted (Muller et al, 1991;Keane, 1999;Parrassin et al, 1999;Destefanis et al, 2003;Biagini and Lazzaroni, 2005).…”

Section: Introductionmentioning

confidence: 93%

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Effect of age at castration on animal performance, muscle characteristics and meat quality traits in 26-month-old Charolais steers

et al. 2009

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Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 53%

Section: Discussionmentioning

confidence: 58%

Section: Introductionmentioning

confidence: 93%

See 3 more Smart Citations

Effect of age at castration on animal performance, muscle characteristics and meat quality traits in 26-month-old Charolais steers

et al. 2009

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Characteristics of the appearance of meat III. Studies on the colour of meat from young bulls

MacDougall

Rhodes

1972

J Sci Food Agric

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Young bulls, reared and slaughtered commercially, were assessed for fat cover, total pigment content of the Longissirnus dorsi, ultimate pH, muscle colour and subsequent colour stability after packaging. Lack of fat gave the carcasses an unfinished appearance. About one-third of the meat was dark, principally because of high ultimate pH associated with animal behaviour and preslaughter handling. In non-dark cutting meat, instrumentally measured lightness was influenced by pigment concentration and brightness was influenced by both pigment concentration and pH. Subjective assessment of lightness described meat with a pH of > 5.9 as moderately to very dark. High pH meat remained dark when packaged for 1 week and initially was less saturated and more purple in hue.

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Effects of surgical and immunocastration of beef cattle on meat colour, post‐mortem glycolytic metabolites and fibre type distribution

et al. 1991

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A B S T R A C TMale cattle were emasculated by total castration, vasectomy or immunocastration and one group was leji entire. The effects of the treatments on meat quality related parameters were examined. Dark cutting beef was undetected in the steers and occurred at only very low levels in the other male types. Steers had histochemical projiles significantly different from those of the other male types, Total castration seems to produce more profound physiological changes than vasectomy and immunocastration. and sire effects on carcass traits, meat palatability and muscle fibre characteristics in Angus cattle. J h i m Sci 59 981-990. Price M A, Tennessen T 1981 Pre-slaughter management and dark-cutting in the carcasses of young bulls. Can J Anim Sci 61 205-208. Price M A, Makarechian M, Tennessen T, Mathison G W 1983 The effects of zeranol on the feed lot performance of beef bulls. Can J h i m Sci 63 803-809. Rhodes D N (ed) 1969 Meat Production @om Entire Male Animals. Churchill, London, p 197. Robertson I S, Fraser H M, Innes G M, Jones A S 1982 Effect of immunological castration on Seideman S C, Cross H R, Oltjen R R, Schanbacher B D 1982 Utilization of the intact male Seideman S C, Crouse J D, Cross H R 1986 The effect of sex condition and growth implants Stewart M R, Zipser M W, Watts B M 1965 The use of reflectance spectrophotometry for the Talmant A, Monjn G, Briand M, Dadet M, Briand Y 1986 Activities of metabolic and Young 0 A, Foote D M 1984 Further studies on bovine muscle composition. Meat Sci 11 sexual and production characteristics in male cattle. Vet Rec 111 529-531. for red meat production: a review. J h i m Sci 55 826-840. on bovine muscle fibre characteristics. Meat Sci 17 79-95. assay of raw meat pigments. J Food Sci 30 464469. contractile enzymes in 18 bovine muscles. Meat Sci 18 2340. 159-170.

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Feedlot Performance and Carcass Characteristics of Young Bulls and Steers Castrated at Four Ages

Cited by 46 publications

References 0 publications

Effect of age at castration on animal performance, muscle characteristics and meat quality traits in 26-month-old Charolais steers

Effect of age at castration on animal performance, muscle characteristics and meat quality traits in 26-month-old Charolais steers

Characteristics of the appearance of meat III. Studies on the colour of meat from young bulls

Effects of surgical and immunocastration of beef cattle on meat colour, post‐mortem glycolytic metabolites and fibre type distribution

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