| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
|
Data corrente: |
01/08/1992 |
|
Data da última atualização: |
31/03/2023 |
|
Autoria: |
PROBERT, A. D.; DAVIES, A. S. |
|
Afiliação: |
Massey University, Palmerston North. |
|
Título: |
A study of short scrotum, castred and entire ram lambs. |
|
Ano de publicação: |
1986 |
|
Fonte/Imprenta: |
Proceedings New Zealand Society Animal Production, v. 46, p. 55-58, 1986. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Growth rates,carcasscomposition and management problems of“short scrotum”rams (made byelevating the testes toa position against the abdominal wall using rubber rings), wethers and entire male lambs were compared on a hill country property in northern Hawkes Bay. Of 3groups of65 Perendale lambs selected randomly at dockingat about 4 weeks of age. I group was left entire, I was made short scrotum and thr other was castrated. The lambs were weaned at about IO weeks of age, separated from the main flock at about 14 weeks of age and thereafter kept as I flock until slaughter at 9 months of age. They were weighed every 6 weeks from 14 weeks ofage. After the~removal of 6 lambs fromeachgroup for detailed investigation at Massey University, the top 50 lambs from each group were slaughtered and their carcass characteristics recorded. Short scrotum rams showed management advantages over normal ram lambs. They were easier to handle. and avoided the works hygiene problem of dirty genitalia. Short scrotum rams had an overall live-weight advantage 01 3kg over wether lambs. This was found not to be due to fat deposition, as short scrotum rams showed a significantly lower GR of 3.3mm, compared with normal rams (4.6mm) and wethers (6.2mm). as predicted by regression for lambs ol32kg live weight. There was no significant difference in carcass weight or dressing percentage between lambs of this live weight, although more normal rams and short scrotum rams fell into heavier grades than did the wcther lambs. In detailed investigations on 6 lambs from each group, no differences were found in muscle:bone ratio or fat distribution between the groups. Short scrotum rams had very low fertility; 50 of 56 had no epididymal sperm reserves and 6 had extremely low sperm production. Most sperm from short scrotum rams were abnormal. Short scrotum rams had significantly lighter testes and epididymides than normal rams. Short scrotum rams had plasma LH levels intermediate to normal rams and wethers. Differences between entire and short scrotum rams in testosterone levels varied inconsistently. MenosGrowth rates,carcasscomposition and management problems of“short scrotum”rams (made byelevating the testes toa position against the abdominal wall using rubber rings), wethers and entire male lambs were compared on a hill country property in northern Hawkes Bay. Of 3groups of65 Perendale lambs selected randomly at dockingat about 4 weeks of age. I group was left entire, I was made short scrotum and thr other was castrated. The lambs were weaned at about IO weeks of age, separated from the main flock at about 14 weeks of age and thereafter kept as I flock until slaughter at 9 months of age. They were weighed every 6 weeks from 14 weeks ofage. After the~removal of 6 lambs fromeachgroup for detailed investigation at Massey University, the top 50 lambs from each group were slaughtered and their carcass characteristics recorded. Short scrotum rams showed management advantages over normal ram lambs. They were easier to handle. and avoided the works hygiene problem of dirty genitalia. Short scrotum rams had an overall live-weight advantage 01 3kg over wether lambs. This was found not to be due to fat deposition, as short scrotum rams showed a significantly lower GR of 3.3mm, compared with normal rams (4.6mm) and wethers (6.2mm). as predicted by regression for lambs ol32kg live weight. There was no significant difference in carcass weight or dressing percentage between lambs of this live weight, although more normal rams and short scrotum rams fell into heavier grades than did the w... Mostrar Tudo |
|
Palavras-Chave: |
Cryptorchids; Live weight; Male reproduction; Manejo reprodutivo; Short scrotum. |
|
Thesagro: |
Ovino; Reprodução. |
|
Thesaurus Nal: |
Carcass composition; Lambs; Rams; Sheep; Testosterone. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
LEADER 02841naa a2200277 a 4500
001 1521095
005 2023-03-31
008 1986 bl uuuu u00u1 u #d
100 1 $aPROBERT, A. D.
245 $aA study of short scrotum, castred and entire ram lambs.$h[electronic resource]
260 $c1986
520 $aGrowth rates,carcasscomposition and management problems of“short scrotum”rams (made byelevating the testes toa position against the abdominal wall using rubber rings), wethers and entire male lambs were compared on a hill country property in northern Hawkes Bay. Of 3groups of65 Perendale lambs selected randomly at dockingat about 4 weeks of age. I group was left entire, I was made short scrotum and thr other was castrated. The lambs were weaned at about IO weeks of age, separated from the main flock at about 14 weeks of age and thereafter kept as I flock until slaughter at 9 months of age. They were weighed every 6 weeks from 14 weeks ofage. After the~removal of 6 lambs fromeachgroup for detailed investigation at Massey University, the top 50 lambs from each group were slaughtered and their carcass characteristics recorded. Short scrotum rams showed management advantages over normal ram lambs. They were easier to handle. and avoided the works hygiene problem of dirty genitalia. Short scrotum rams had an overall live-weight advantage 01 3kg over wether lambs. This was found not to be due to fat deposition, as short scrotum rams showed a significantly lower GR of 3.3mm, compared with normal rams (4.6mm) and wethers (6.2mm). as predicted by regression for lambs ol32kg live weight. There was no significant difference in carcass weight or dressing percentage between lambs of this live weight, although more normal rams and short scrotum rams fell into heavier grades than did the wcther lambs. In detailed investigations on 6 lambs from each group, no differences were found in muscle:bone ratio or fat distribution between the groups. Short scrotum rams had very low fertility; 50 of 56 had no epididymal sperm reserves and 6 had extremely low sperm production. Most sperm from short scrotum rams were abnormal. Short scrotum rams had significantly lighter testes and epididymides than normal rams. Short scrotum rams had plasma LH levels intermediate to normal rams and wethers. Differences between entire and short scrotum rams in testosterone levels varied inconsistently.
650 $aCarcass composition
650 $aLambs
650 $aRams
650 $aSheep
650 $aTestosterone
650 $aOvino
650 $aReprodução
653 $aCryptorchids
653 $aLive weight
653 $aMale reproduction
653 $aManejo reprodutivo
653 $aShort scrotum
700 1 $aDAVIES, A. S.
773 $tProceedings New Zealand Society Animal Production$gv. 46, p. 55-58, 1986.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 4 | |
| 1. |  | BORGES, L. de A. B.; SANTOS, I. G. dos; FONTOURA, P. R.; FERNANDES, P. M.; MADARI, B. E. Avaliação da produtividade de colmos em uma cronossequência de canaviais cultivados em sistema orgânico. In: SEMINÁRIO JOVENS TALENTOS, 7., 2013, Santo Antônio de Goiás. Coletânea dos resumos apresentados. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2013. p. 100. (Embrapa Arroz e Feijão. Documentos, 292). Pôster - pós-graduação.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
|    |
| 2. | | ALVES, R. T.; REIN, T. A.; FONTOURA, P. R.; CAMPOS, P. F.; FERNANDES, P. M.; ALMEIDA, J. E. M. Avaliação de métodos de controle da cigarrinha-da-raiz da cana-de-açúcar, Mahanarva Fimbriolata. In: SIMPÓSIO DE CONTROLE BIOLÓGICO, 11., 2009, Bento Gonçalves. Tecnologia e conservação ambiental: resumos. [Bento Gonçalves]: Sociedade Entomológica do Brasil: IRGA: Unisinos: Fiocruz, 2009. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Cerrados. |
| |
| 3. | | RIBEIRO, G. H. DA S.; DIAS, L. E. R.; FONTOURA, P. R.; SANTOS, I. G. DOS; BARRETO, C. C.; REIS JUNIOR, F. B. dos; MENDES, I. de C. Atividade enzimática de solos do cerrado sob cultivo de cana-de-açúcar em diferentes sistemas de manejo. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas. Uberlândia: Sociedade Brasileira de Ciência do Solo, 2011. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Cerrados. |
|  |
| 4. | | ALVES, R. T.; REIN, T. A.; FONTOURA, P. R.; CAMPOS, P. F.; MALAQUIAS, J. V.; FERNANDES, P. M.; TRISTÃO, V. L.; SANTOS, I. G. Avaliação do controle biológico da cigarrinha-da-raiz da cana-de-açúcar, Mahanarva Fimbriolata (Stal. 1854) no Cerrado do Brasil. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 23., 2010, Natal. Anais... Natal: Sociedade Brasileira de Entomologia, 2010. 1 CD-ROM. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Cerrados. |
| |
| Registros recuperados : 4 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
