Does a high or moderate nutritional supplementation affect the puberty and productive performance of Nellore heifers?
Biosci. j. (Online)
;
38: e38079, Jan.-Dec. 2022. tab, graf
Artigo
em Inglês
| LILACS
| ID: biblio-1397162
ABSTRACT
The effects of higher supplementation levels for young Nellore heifers fed tropical forages including their influence on puberty, need to be understood. This study investigated the influence of high and moderate supplementation levels on puberty onset and the productive performance of Nellore heifers. Thirty-six Nellore heifers (225 + 3.52 kg) were used in a completely randomized design, with three treatments (I) no concentrate (control); (II) concentrate supplement at 4 g/kg body weight (BW); (III) concentrate supplement at 8 g/kg BW. Increased supplement level led to a linear increase in average daily gain (P < 0.05). The high supplementation level (8 g/kg BW) had the highest proportion of corpus luteum presence (82% of heifers), compared to the 4 g/kg BW treatment group (67%) and the control group (33%; P < 0.05). Our findings indicate that providing a high level of energy supplementation to Nellore heifers for approximately 100 d improves performance and increases the proportion of heifers that reach puberty.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Bovinos
/
Pastagens
/
Suplementos Nutricionais
Idioma:
Inglês
Revista:
Biosci. j. (Online)
Assunto da revista:
Agricultura
/
Disciplinas das Cincias Biol¢gicas
/
Pesquisa Interdisciplinar
Ano de publicação:
2022
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade Federal Rural da Amazônia/BR
/
Universidade Federal de Viçosa/BR
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