Data/hora: 14/06/2024 02:27:44

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 01/08/1992
Data da última atualização: | 06/12/2023
Autoria: | SCHINCKEL, P. G.
Título: | The relationship of skim folliele development to growth rate in sheep.
Ano de publicação: | 1955
Fonte/Imprenta: | Australian Journal of Agricultural Research, v. 6, n. 2, p. 308-323, 1955.
DOI: | 10.1071/ar9550308
Idioma: | Inglês

Conteúdo:

Abstract: Observations are reported on factors affecting the ratio of secondary to primary follicles (SJP) in a flock of Merino sheep.It was found that all follicles were initiated prior to birth but that the number which finally came to maturity (production of fibre) was significantly affected by birth weight and growth from birth to 1 month. Growth at later ages appeared to be unimportant. There was a significant correlation (r = +0.29) between birth weight and log potential S/P at birth. This is interpreted to indicate that while pre-natal growth conditions affect the number of follicles initiated, other factors are also of considerable importance. It is concluded that the larger animals at birth also have a greater total number of primary follicles than smaller animals. It is further concluded that this difference in total primary follicles results primarily from differences in size a t the 90th day of pre-natal life rather than from differences in density a t that time.
Keyword(s):
growth rate ?
birth weight ?
growth conditions ?
considerable importance ?
follicle development ?
factors affecting ?
relationship of ?
the relationship

Palavras-Chave: | Considerable importance; Factors affecting; Follicle development; Growth conditions; Melhoramento genetico; The relationship.
Thesagro: | Melhoramento; Ovino; Pele.
Thesaurus Nal: | Birth weight; Genetic improvement; Sheep; Specific growth rate.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (6050-1) - ADD - AP - PP - SP 01617 -  - SP 01617 - DIS