Erratum: Rufino-Moya, P.J., et al. Methane Production of Fresh Sainfoin, with or without PEG, and Fresh Alfalfa at Different Stages of Maturity is Similar, but the Fermentation End Products Vary. Animals 2019, 9, 197

Pablo José Rufino-Moya; Mireia Blanco; Juan Ramón Bertolín; Margalida Joy

doi:10.3390/ani9070421

,

and

Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Instituto Agroalimentario de Aragón–IA2 (CITA-Universidad de Zaragoza), Avda, Montañana 930, 50059 Zaragoza, Spain

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Animals2019, 9(7), 421;https://doi.org/10.3390/ani9070421

This article belongs to the Special Issue In Vitro Digestibility in Animal Nutritional Studies

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The authors wish to make the following correction to their paper [1].

In Table 2, the production of methane in alfalfa at the start-flowering should be 38 mL/g dOM and not 3 mL/g dOM.

Table 2. Effect of the substrate (S) and the stage of maturity ¹ (SM) on gas and methane production (CH₄), potential gas production (A), rate of gas production (c), in vitro organic matter degradability (IVOMD), ammonia (NH₃-N), and volatile fatty acids (VFAs).

The authors would like to apologize for any inconvenience caused.

Reference

Rufino-Moya, P.J.; Blanco, M.; Bertolín, J.R.; Joy, M. Methane Production of Fresh Sainfoin, with or without PEG, and Fresh Alfalfa at Different Stages of Maturity is Similar but the Fermentation End Products Vary. Animals 2019, 9, 197. [Google Scholar] [CrossRef] [PubMed]

Table 2. Effect of the substrate (S) and the stage of maturity ¹ (SM) on gas and methane production (CH₄), potential gas production (A), rate of gas production (c), in vitro organic matter degradability (IVOMD), ammonia (NH₃-N), and volatile fatty acids (VFAs).

	Alfalfa			Sainfoin			Sainfoin+PEG				P-values
Item	VEG	Start-F	End-F	VEG	Start-F	End-F	VEG	Start-F	End-F	r.s.d.²	S	SM	SxSM
pH	6.42 ^a	6.44 ^a	6.41 ^a	6.35 ^bx	6.32 ^by	6.33 ^by	6.37 ^bx	6.31 ^bz	6.34 ^by	0.032	< 0.001	0.002	0.01
Gas production (mL/g dOM ³)	179	184	188	183	163	181	180	199	173	26.5	0.43	0.97	0.12
A (mL)	68 ^x	67 ^bxy	62 ^y	63 ^y	74 ^bx	70 ^x	65 ^y	78 ^ax	67 ^y	5.7	0.01	< 0.001	< 0.001
c (h⁻¹)	0.2 ^a	0.22 ^a	0.19	0.14 ^by	0.16 ^bxy	0.19 ^y	0.15 ^bx	0.15 ^bx	0.19 ^y	0.037	< 0.001	0.02	0.05
CH₄ production (mL/g dOM ³)	37	38	39	37	33	38	37	39	36	5.0	0.29	0.73	0.17
CH₄:gas (%)	14.5	14.2	14.1	14.1 ^xy	13.4 ^y	14.8 ^x	14.5	14.4	14.4	0.88	0.35	0.13	0.11
IVOMD (%)	85.13 ^bx	83.73 ^bx	76.97 ^by	84.97 ^by	92.59 ^ax	85.58 ^ay	86.81 ^ay	93.59 ^ax	86.41 ^ay	1.692	< 0.001	< 0.001	< 0.001
NH₃-N (mg/L)	240 ^a	247 ^a	210	206 ^b	184 ^b	201	242 ^a	234 ^a	215	31.7	< 0.001	0.06	0.20
Total VFAs (mmol/L)	102 ^xy	105 ^x	97 ^y	96 ^y	103 ^x	101 ^xy	99 ^y	105 ^x	102 ^xy	7.1	0.61	0.02	0.35
Acetic acid (C₂) (mol/100 mol)	63.1 ^cy	63.9 ^bx	64.0 ^bx	65.4 ^ay	66.5 ^ax	66.3 ^ax	63.9 ^by	64.6 ^bx	64.5 ^bx	0.76	< 0.001	< 0.001	0.95
Propionic acid (C₃) (mol/100 mol)	15.5 ^a	15.3 ^a	15.3 ^a	15 ^bx	14.5 ^cy	14.5 ^by	15.3 ^ax	14.9 ^by	15.2 ^ax	0.28	< 0.001	< 0.001	0.09
Butyric acid (mol/100 mol)	13.0 ^a	12.6 ^a	12.6 ^a	12.1^c	12.2 ^b	12 ^b	12.5 ^b	12.8 ^a	12.4 ^a	0.45	< 0.001	0.20	0.16
Iso-butyric acid (mol/100 mol)	1.97 ^ax	1.91 ^axy	1.87 ^ay	1.82 ^bx	1.68 ^by	1.72 ^by	1.97 ^ax	1.83 ^ay	1.84 ^ay	0.100	< 0.001	< 0.001	0.63
Valeric acid (mol/100 mol)	2.14 ^axy	2.09 ^ay	2.22 ^ax	1.87 ^bx	1.7 ^cy	1.83 ^cx	2.12 ^ay	1.95 ^bx	2.04 ^by	0.107	< 0.001	< 0.001	0.11
Iso-valeric acid (mol/100 mol)	4.27 ^ax	4.09 ^axy	4.04 ^ay	3.87 ^bx	3.5 ^by	3.65 ^by	4.19 ^ax	3.91 ^ay	3.93 ^ay	0.223	< 0.001	< 0.001	0.69
C₂:C₃ (mol/mol)	4.1 ^cy	4.18 ^cxy	4.2 ^bx	4.39 ^ay	4.62 ^ax	4.59 ^ax	4.18 ^by	4.36 ^bx	4.25 ^by	0.109	< 0.001	< 0.001	0.13
CH₄:VFA (mL/mol)	2.41	2.24 ^b	2.35	2.53	2.22 ^b	2.48	2.62	2.73 ^a	2.4	0.313	0.01	0.26	0.10

¹ VEG: vegetative; Start-F: start of flowering; End-F: end of flowering; ² residual standard deviation; ³ degraded organic matter. Within a parameter, means with different superscript (a,b,c) differ at P < 0.05 for the substrate effect in each stage of maturity; with different superscript (x,y,z) at P < 0.05 for the stage of maturity effect in each substrate.

© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

Erratum: Rufino-Moya, P.J., et al. Methane Production of Fresh Sainfoin, with or without PEG, and Fresh Alfalfa at Different Stages of Maturity is Similar, but the Fermentation End Products Vary. Animals 2019, 9, 197

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