Data/hora: 28/05/2024 05:49:31

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 09/02/1996
Data da última atualização: | 09/02/1996
Autoria: | FERNANDEZ, N.; RODRIGUEZ, M.; PERIS, M.; BARCELO, M.; MOLINA, M. P.; TORRES, A.
Título: | Bovine somatotropin dose titration in lactating dairy ewes. 1.Milk yield and milk composition.
Ano de publicação: | 1994
Fonte/Imprenta: | Journal of Dairy Science, v.78, n.5, p.1073-1082, 1994.
Idioma: | Inglês
Conteúdo: | Seventy-four lactating dairy ewes were injected with recombinant bST (sometribove) in a sustained-release for mulation. Ewes received 0, 80, 160, 0 240 mg of bST every 14 d from wk 3 to 8 of lactation (Part 1) and 0, 80, or 160 mg of bST every 14 d from wk 11 to 23 of lactation (part 2). Sometribove increased milk yield over that of the contraIs for aIl treatment groups. The increase was largest for the group that was administered 160 mg of bST: milk yield was 34.1 and 53.2% and 6% FCM was 36.9 and 51.8% for parts 1 and 2 of the study, respectively. Sometribove increased milk fat during part 1 of the study, but decreased milk fat during part 2. Protein contents of milk were decreased throughout the study. For all groups, bST increased the yield of milk constituents over that of the controls. When milking frequency was reduced from twice to once daily, the difference in milk yield between control ewes and those treated with bST was maintained. Neither mastitis incidence nor milk SCC were affected by bST treatment. Recombinant bST is efficacious in increasing bath actuaI milk yield and 6% FCM over the dose range of 80 to 240 mg/14 d without adverse effects for lactating ewes.
Palavras-Chave: | Composicao.
Thesagro: | Leite; Ovino; Produção.
Categoria do assunto: | --
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (2571-1) - ADC - AP - -- -  -  - 1996.00000 - DIS