| Autor: |
Vanessa Jaqueline Veloso da Mata, Luis Rennan Sampaio de Oliveira, Edenio Detmann, Kaliandra Souza Alves, Rafael Mezzomo, Natália Gomes Lacerda, Kharina Romana da Silva Santana, Daiany Iris Gomes |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Bioscience Journal, Vol 38, Pp e38079-e38079 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
1981-3163 |
| DOI: |
10.14393/BJ-v38n0a2022-61302 |
| Popis: |
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 |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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