Data/hora: 26/04/2024 09:41:55

Biblioteca(s): 	Embrapa Caprinos e Ovinos.	
Data corrente: 	06/06/2018	
Data da última atualização: 	06/06/2018	
Autoria: 	RATTRAY, P. V.; SMITH, J. F.; WINN, G. W.; MacLEAN, K. S.	
Título: 	Effects of genotype, liveweight, pasture type and feeding level on ovulation responses in ewes.	
Ano de publicação: 	1981	
Fonte/Imprenta: 	Proceedings of the New Zealand Society of Animal Production, v. 41, p. 174-182, 1981.	
Idioma: 	Inglês	
Conteúdo: 	In a multifactorial experiment, groups (n = 25/group) of Coopworth, Commercial (C) Romney and Waihora (W) Romney ewes, differentially fed over summer to achieve either high (H) or low (L) pre-flushing weights (54-57 v 41-43 kg), were offered 3 levels of clover or ryegrass dominant pasture for 6 weeks prior to a synchronised mating. Pre-flushing weight and pasture type significantly influenced ovulation rate. W Romney ewes responded differently from the other genotypes as feeding level increased. Probability of a multiple ovulation was 0.62 and 0.75 for the L and H ewes; and 0.75 and 0.61 for the clover and ryegrass pastures, respectively. For increasing feeding levels, probabilities for the Coopworth were 0.34, 0.78 and 0.72; C Romney 0.48, 6.70 and 0.65; and W Romnep 0.71, 0.76 and 0.88, respectively. By inclusion of both pre-flushing and pre-mating weight in the model probability contours were derived for each genotype.	
Thesaurus Nal: 	Animal nutrition; Animal reproduction; Ewes; Pastures; Sheep.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Caprinos e Ovinos (CNPC)	
Exemplares: 	CNPC - (37111-1) - ADD - AP - PP -  -  -  - DIS