Multivariate modeling strategies to predict nutritional requirements of essential amino acids in semiheavy second-cycle hens

Autor: Walter Morales-Suárez, Iván Camilo Ospina-Rojas, Jonh Jairo Méndez-Arteaga, Adriana Helena do Nascimento Ferreira, Henry Alexander Váquiro-Herrera

Publikováno v: Revista Brasileira de Zootecnia, Vol 50 (2021)

ABSTRACT An experiment with 23 diets was performed to evaluate the effect of digestible lysine (Lys), digestible methionine + cysteine (Met+Cys), and digestible threonine (Thr) on egg production of H&N Brown second-cycle laying hens (SCLH) for 20 wee

Externí odkaz: https://doaj.org/article/4f86da4dc2784b088e0515e70e5080e6

Organic trace minerals and calcium levels in broilers' diets to 21 days old

Autor: Bruno Damaceno Faria, Adriana Helena do Nascimento Ferreira, Luiz Fernando Teixeira Albino, Horacio Santiago Rostagno, Valdir Ribeiro Junior, Leandro M. Silva, Melissa Izabel Hannas

Publikováno v: Scientia Agricola, Vol 77, Iss 1
Scientia Agricola v.77 n.1 2020
Scientia Agrícola
Universidade de São Paulo (USP)
instacron:USP
Scientia Agricola, Volume: 77, Issue: 1, Article number: e20180071, Published: 01 JUL 2019

This study was undertaken to evaluate the effects of dietary calcium levels and supplementation with organic trace minerals selenium, copper, iron, zinc and manganese on performance, tissue deposition and litter mineral concentration. A total of 2,49

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c56356c944a588eb9b195079b66d28e
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000100401&lng=en&tlng=en