Data/hora: 21/09/2024 12:00:40

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	07/10/1996	
Data da última atualização: 	03/04/2017	
Autoria: 	ODDE, K. G.; KIRACOFE, G. H.; SCHALLES, R. R.	
Título: 	Effect of forty-eight-hour calf removal, once- or twice-daily suckling and norgestomet on beef cow and calf performance.	
Ano de publicação: 	1986	
Fonte/Imprenta: 	Theriogenology, v.26, n.3, p.371-381, Sept. 1986.	
Idioma: 	Inglês	
Conteúdo: 	Trials were conducted in 1980 and 1981 to evaluate the effects of once-daily suckling, twice-daily suckling, 48-h calf removal, and Norgestomet on performance of spring-calving cows and their calves. Eighty-three and 73 Polled Hereford and 29 and 42 Simmental-cross cows were utilized in 1980 and 1981, respectively. Cows were alloted by age, breed, calving date and winter nutrition treatment to one of four groups: 1) once-daily suckle for 24 d starding 11 d before the beginning of the breeding season, 2) twice-daily suckle (same time frame as 1), 3) 48-h calf removal ending immediately before the breeding season, 4) calves remained with cows (controls). One-half of each gropu was implanted with Norgestomet b from 11 until 2 d before the start of the breeding season. Once- and twice-daily suckling increased (P<0.05) the percentage of noncycling cows showing estrus the first 3 wk after the start of treatment. Preganancy rates for the breeding season were higher (P<0.1) in the once-daily suckle and 48-h calf removal groups for cows that had not exhibited estrus before the beginning of treatment. Norgestomet increased (P<0.05) the percentage of cows showing estrus within 3 wk after the start of treatment within the 48-h calf-removal and control groups. Milk production was not affected (P>0.1) by suckling treatment. Calf weight gains during suckling treatment were greater (P<0.05) in control and twice-daily suckled calves than in 48-h calf removal or once-daily suckled calves. Suckling treatment did not affect (P>0.1) adjusted weaning weights of calves or frequency and duration of suckling recorded 2 wk after the end of suckling treatment.	
Palavras-Chave: 	Calf removal; Limited suckling; Production.	
Thesagro: 	Gado de Corte; Produção; Reprodução.	
Thesaurus Nal: 	beef cattle; norgestomet; reproduction.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (33127-1) - ADD - SP - PP - SP15002 -  - 15002 - DIS