PMID- 35953916
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230308
IS  - 2076-2615 (Print)
IS  - 2076-2615 (Electronic)
IS  - 2076-2615 (Linking)
VI  - 12
IP  - 15
DP  - 2022 Jul 28
TI  - Effects of DL and L-Methionine on Growth Rate, Feather Growth, and Hematological 
      Parameters of Tetra-SL Layers from 1-28 Days of Age.
LID - 10.3390/ani12151928 [doi]
LID - 1928
AB  - The study was carried out to determine whether sources or levels of methionine 
      (Met) affect the health status of Tetra-SL (TSL) chicks by examining growth 
      performance, feather growth, and hematological parameters. A total of ninety-six 
      (96) day-old (44.2 +/- 0.18 g lw) TSL chicks were randomly allotted to six 
      treatment groups (three levels for each DL and L-Met source) with four replicates 
      of four chicks each. Chicks were fed ad libitum diets supplemented with 90, 100, 
      and 110% of methionine requirements for four weeks after hatch. The parameters 
      examined are bodyweight (BW), average daily gain (ADG), feather length (FL), and 
      hematological parameters, including: red blood cell (RBC) count, hemoglobin (Hb) 
      concentration in the blood, hematocrit (Ht; %), number of white blood cells 
      (WBC), platelet count, mean corpuscular volume of red blood cells (MCV), mean 
      corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), 
      lymphocyte (LYM), mid-range (MID), and granulocyte (GRAN). There was no 
      significant effect of Met sources and levels on BW, ADG, and FL of TSL chicks for 
      the first four weeks of rearing. The RBC, Hb, Ht, WBC, LYM, MID, and GRAN values 
      of TSL chicks were statistically influenced by dietary Met sources and Met levels 
      (p < 0.05). Among the treatment groups, the number of white blood cells (WBC) on 
      90% DL-Met was the lowest. WBC, RBC, Hb, and Ht were higher from chicks that 
      received 100% DL-Met than all other levels, regardless of the Met sources. The 
      MCV, MCH, and MCHC values were not affected by either Met source or levels or 
      their interactions. Met source and level interactively affected the Ht, WBC, LYM 
      %, and GRAN values of TSL chicks (p < 0.05). The platelet number was affected by 
      Met source only (p < 0.05) with chicks receiving L-Met source having more than 
      twofold higher platelet values than DL-Met source. In conclusion, varying Met 
      levels by +/-10% of the requirement does not adversely affect the growth 
      performance, feather growth, and hematological parameters of TSL chicks reared 
      for up to four weeks of age. DL-Met increased the body weight and improved the 
      white blood cells, red blood cells, and hematocrit at 28 days after hatch. DL-Met 
      showed similar biological efficacy as L-Met for body weight and feather growth 
      but not for the hematological parameters.
FAU - Kachungwa Lugata, James
AU  - Kachungwa Lugata J
AUID- ORCID: 0000-0002-3593-3906
AD  - Department of Animal Nutrition and Physiology, Faculty of Agriculture and Food 
      Sciences and Environmental Management, University of Debrecen, Boszormenyi Street 
      138, 4032 Debrecen, Hungary.
AD  - Doctoral School of Animal Science, Faculty of Agriculture and Food Sciences and 
      Environmental Management, University of Debrecen, Boszormenyi Street 138, 4032 
      Debrecen, Hungary.
FAU - Olah, Janos
AU  - Olah J
AD  - Institutes for Agricultural Research and Educational Farm, University of 
      Debrecen, Boszormenyi Street 138, 4032 Debrecen, Hungary.
FAU - Ozsvath, Xenia Erika
AU  - Ozsvath XE
AD  - Doctoral School of Animal Science, Faculty of Agriculture and Food Sciences and 
      Environmental Management, University of Debrecen, Boszormenyi Street 138, 4032 
      Debrecen, Hungary.
AD  - Department of Animal Husbandry, Faculty of Agriculture and Food Science and 
      Environmental Management, University of Debrecen, Boszormenyi Street 138, 4032 
      Debrecen, Hungary.
FAU - Knop, Renata
AU  - Knop R
AD  - Department of Animal Husbandry, Faculty of Agriculture and Food Science and 
      Environmental Management, University of Debrecen, Boszormenyi Street 138, 4032 
      Debrecen, Hungary.
FAU - Angyal, Eszter
AU  - Angyal E
AUID- ORCID: 0000-0003-3039-2327
AD  - Doctoral School of Animal Science, Faculty of Agriculture and Food Sciences and 
      Environmental Management, University of Debrecen, Boszormenyi Street 138, 4032 
      Debrecen, Hungary.
AD  - Department of Animal Husbandry, Faculty of Agriculture and Food Science and 
      Environmental Management, University of Debrecen, Boszormenyi Street 138, 4032 
      Debrecen, Hungary.
FAU - Szabo, Csaba
AU  - Szabo C
AUID- ORCID: 0000-0002-2234-204X
AD  - Department of Animal Nutrition and Physiology, Faculty of Agriculture and Food 
      Sciences and Environmental Management, University of Debrecen, Boszormenyi Street 
      138, 4032 Debrecen, Hungary.
LA  - eng
PT  - Journal Article
DEP - 20220728
PL  - Switzerland
TA  - Animals (Basel)
JT  - Animals : an open access journal from MDPI
JID - 101635614
PMC - PMC9367603
OTO - NOTNLM
OT  - DL-methionine
OT  - L-methionine
OT  - Tetra-SL
OT  - blood hematology
COIS- The authors declare no conflict of interest.
EDAT- 2022/08/13 06:00
MHDA- 2022/08/13 06:01
PMCR- 2022/07/28
CRDT- 2022/08/12 01:02
PHST- 2022/07/04 00:00 [received]
PHST- 2022/07/25 00:00 [revised]
PHST- 2022/07/27 00:00 [accepted]
PHST- 2022/08/12 01:02 [entrez]
PHST- 2022/08/13 06:00 [pubmed]
PHST- 2022/08/13 06:01 [medline]
PHST- 2022/07/28 00:00 [pmc-release]
AID - ani12151928 [pii]
AID - animals-12-01928 [pii]
AID - 10.3390/ani12151928 [doi]
PST - epublish
SO  - Animals (Basel). 2022 Jul 28;12(15):1928. doi: 10.3390/ani12151928.