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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
25/07/1995 |
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Data da última atualização: |
25/07/1995 |
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Autoria: |
GUENTHER, J. J.; BUSHMAN, D. H.; POPE, L. S.; MORRISON, R. D. |
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Título: |
Growth and development of the major carcass tissues in beef calves from weening to slaughter weith reference to the effect of plane of nutrition. |
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Ano de publicação: |
1965 |
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Fonte/Imprenta: |
Journal of Animal Science, v.24, n.4, p.1184-1191, 1965. |
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Idioma: |
Inglês |
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Conteúdo: |
Thirty-six half-sib Hereford steer calves were used to determine the effect of plane of nutrition on the growth and development of beef calves from weaning to slaughter weight. The experimental design permitted comparison of data on both and age- and a weight constant basis. Feed efficiency was greatest during the initial phase of the feedlot period and greatly favored the high-level steers over the age constant moderate steers. On a weight-constant basis, however, little difference was noted in efficiency. Carcass grade and dressing percent also favored the high-level steers. The longissimus dorsia muscle matured faster at the 6th and 9th thoracic vertebrate than at the 12th. Moreover, this muscle developed in a curvilinear fashion with increased animal age and by the mid-point of the postweaning feedlot period had attained 87% of its potential size. In all cases ribeye area favored the high-level steers. Lean deposition reached its maximum rate during the early part of the feedlot test and diminished as the amimals approached maturity. By the H1 slaughter period the high and moderate calves had accumulated 86 and 78%, respectively of their ultimate carcass lean. The average age of these calves was 10.8 months. The high-level steers produced more total lean than did the age-constant moderate steers, but no significant difference was noted in lean content when the calves were compared on a weight-constant basis. rate of lean deposition favored the hiugh-plane calves in all compariosn, however. Fat accumulation was most rapid during the latter half of the feeding period and showed a sharp increase after lean production began to subside. Thus, the lean:fat ratio became smaller and less desirable as the fedlot period was extended past this point. experimental steers weighed approximately 355 kg. and were almost 11 months old at this time. Significnt differences in fat content were obtained only with the H2-M2 comparison. Skeletal development was accomplished early in life and was related more to animal age and duration of feeding time than to the nutricional treatments imposed. The high plane steers had attained about 96% of their mature scale by the H1 period. No significant difference in total bone content was noted between calves slaughtered at the same age. However, on a weight-constant basis, the moderate calves averaged 2 kg. (per side) more bone than did the high-level calves. MenosThirty-six half-sib Hereford steer calves were used to determine the effect of plane of nutrition on the growth and development of beef calves from weaning to slaughter weight. The experimental design permitted comparison of data on both and age- and a weight constant basis. Feed efficiency was greatest during the initial phase of the feedlot period and greatly favored the high-level steers over the age constant moderate steers. On a weight-constant basis, however, little difference was noted in efficiency. Carcass grade and dressing percent also favored the high-level steers. The longissimus dorsia muscle matured faster at the 6th and 9th thoracic vertebrate than at the 12th. Moreover, this muscle developed in a curvilinear fashion with increased animal age and by the mid-point of the postweaning feedlot period had attained 87% of its potential size. In all cases ribeye area favored the high-level steers. Lean deposition reached its maximum rate during the early part of the feedlot test and diminished as the amimals approached maturity. By the H1 slaughter period the high and moderate calves had accumulated 86 and 78%, respectively of their ultimate carcass lean. The average age of these calves was 10.8 months. The high-level steers produced more total lean than did the age-constant moderate steers, but no significant difference was noted in lean content when the calves were compared on a weight-constant basis. rate of lean deposition favored the hiugh-plane calves in all c... Mostrar Tudo |
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Palavras-Chave: |
Bovine; Desenvolvimento; Development; Growth. |
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Thesagro: |
Bovino; Crescimento; Nutrição. |
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Thesaurus Nal: |
nutrition. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03151naa a2200253 a 4500
001 1784936
005 1995-07-25
008 1965 bl --- 0-- u #d
100 1 $aGUENTHER, J. J.
245 $aGrowth and development of the major carcass tissues in beef calves from weening to slaughter weith reference to the effect of plane of nutrition.
260 $c1965
520 $aThirty-six half-sib Hereford steer calves were used to determine the effect of plane of nutrition on the growth and development of beef calves from weaning to slaughter weight. The experimental design permitted comparison of data on both and age- and a weight constant basis. Feed efficiency was greatest during the initial phase of the feedlot period and greatly favored the high-level steers over the age constant moderate steers. On a weight-constant basis, however, little difference was noted in efficiency. Carcass grade and dressing percent also favored the high-level steers. The longissimus dorsia muscle matured faster at the 6th and 9th thoracic vertebrate than at the 12th. Moreover, this muscle developed in a curvilinear fashion with increased animal age and by the mid-point of the postweaning feedlot period had attained 87% of its potential size. In all cases ribeye area favored the high-level steers. Lean deposition reached its maximum rate during the early part of the feedlot test and diminished as the amimals approached maturity. By the H1 slaughter period the high and moderate calves had accumulated 86 and 78%, respectively of their ultimate carcass lean. The average age of these calves was 10.8 months. The high-level steers produced more total lean than did the age-constant moderate steers, but no significant difference was noted in lean content when the calves were compared on a weight-constant basis. rate of lean deposition favored the hiugh-plane calves in all compariosn, however. Fat accumulation was most rapid during the latter half of the feeding period and showed a sharp increase after lean production began to subside. Thus, the lean:fat ratio became smaller and less desirable as the fedlot period was extended past this point. experimental steers weighed approximately 355 kg. and were almost 11 months old at this time. Significnt differences in fat content were obtained only with the H2-M2 comparison. Skeletal development was accomplished early in life and was related more to animal age and duration of feeding time than to the nutricional treatments imposed. The high plane steers had attained about 96% of their mature scale by the H1 period. No significant difference in total bone content was noted between calves slaughtered at the same age. However, on a weight-constant basis, the moderate calves averaged 2 kg. (per side) more bone than did the high-level calves.
650 $anutrition
650 $aBovino
650 $aCrescimento
650 $aNutrição
653 $aBovine
653 $aDesenvolvimento
653 $aDevelopment
653 $aGrowth
700 1 $aBUSHMAN, D. H.
700 1 $aPOPE, L. S.
700 1 $aMORRISON, R. D.
773 $tJournal of Animal Science$gv.24, n.4, p.1184-1191, 1965.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| 4184. | | SCUDELETTI, D.; CRUSCIOLL, C. A. C.; BOSSOLANI, J. W.; MORETTI, L. G.; MOMESSO, L.; TUBAÑA, B. S.; CASTRO, S. G. Q. de; OLIVEIRA, E. F. de; HUNGRIA, M. Trichoderma asperellum inoculation as a tool for attenuating drought stress in sugarcane. Frontiers in Plant Science, v. 12, article 645542, 2021. 13 p.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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