Investigating the performance of polyester microfibers <i>in situ</i> bags using different weft yarn count and density

Hanafy, Doaa Elgohary; Hamoda, Dina Mohamed; Khattab, Ibrahim Mohamed; Aboamer, Ahmed Abdelkader

doi:10.4025/actascianimsci.v42i1.48478

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ANIMAL PRODUCTION • Acta Sci., Anim. Sci. 42 • 2020 • https://doi.org/10.4025/actascianimsci.v42i1.48478 copy

Investigating the performance of polyester microfibers in situ bags using different weft yarn count and density

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT.

Microfiber fabrics are more efficiency in retaining fine-particles that increase the variation in in situ degradability. The aim of this was to examine the performance of in situ bags made from different microfiber fabric for meeting the required specification and their ruminal degradability compared with standard Ankom in situ bags. Four fabrics were manufactured using polyester microfiber with 1.04 denier, weft yarn counts (150 and 300), weft density (22 and 28 picks / inch), plain 1/1 textile structure. Physical and mechanical properties of manufactured fabrics were measured before and after incubation. Ruminal degradability was measured for three feedstuffs (soybean meal, wheat bran and berseem hay) using three rumen-fistulated rams as a replicates after 24 and 48 hours. Fabric's pore size was significantly decreased as either yarn weft count or density increased. Yarn weft count had a significant effect on all fabric's properties. Air permeability was significantly decreased as fabric's weft yarn count increased. Sample (1) meet the specific requirements for in situ bags and showed the nearest degradability values to those observed using Ankom bags for all feedstuffs in most incubation times. Microfiberin situ bags could be used in in situ ruminal degradation trials to reduce the variation in results due to the present of the fine particles.

Keywords:
bags; fabric; feedstuffs; incubation; nutrient; pore size

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[1] * Author for correspondence. E-mail: d_ego44@hotmail.com

Sample No.	Warp count (denier)	Weft count (denier)	Weft density (picks / inch)	No. of filaments per yarn	Denier per filament	Fabric cover factor	Fabric weight (g m^-2)	Fabric Thickness (mm)
1	150	150	22	144	1.04	17.9	97	0.21
2		150	28	144	1.04	19.3	115	0.24
3		300	22	288	1.04	19.9	145	0.27
4		300	28	288	1.04	22	165	0.29

Item	Sample No.	Weft Count (denier)	Weft density (picks / inch)	Incubation		SEM	P value
				Before	After		W	D	I	IWD
Pore size (µm)	1	150	22	72.7		1.03	<0.001	<0.001
	2		28	42.1
	3	300	22	53.5
	4		28	30.0
Warp tensile strength (N)	1	150	22	751.8	500.1	9.50	0.001	0.036	<0.001	0.587
	2		28	742.0	585.1
	3	300	22	810.7	621.1
	4		28	853.2	694.6
Warp tensile elongation (%)	1	150	22	25.3	57.0	0.96	0.004	0.061	<0.001	0.470
	2		28	29.7	38.7
	3	300	22	36.0	55.7
	4		28	43.0	46.0
Weft tensile strength (N)	1	150	22	490.3^a	477.3^a	10.96	<0.001	<0.001	<0.001	0.014
	2		28	686.5^b	503.4^a
	3	300	22	925.1^c	823.8^c
	4		28	1245.4^d	1167.0^d
Weft tensile elongation (%)	1	150	22	27.7	53.3	0.77	<0.001	0.019	0.015	0.163
	2		28	38.0	32.7
	3	300	22	24.0	33.7
	4		28	31.3	18.7
Warp tear strength (N)	1	150	22	42.4	66.5	0.61	0.042	<0.001	<0.001	0.586
	2		28	34.2	64.8
	3	300	22	40.8	62.5
	4		28	31.9	62.4
Weft tear strength (N)	1	150	22	39.4^b	42.7^b	0.41	<0.001	0.782	<0.001	<0.001
	2		28	32.1^a	60.1^d
	3	300	22	61.4^d	61.4^d
	4		28	64.9^d	48.7^c
Air permeability (cm³/cm².sec)	1	150	22	26.7^d	26.5^d	0.08	<0.001	<0.001	<0.001	<0.001
	2		28	17.2^c	8.7^b
	3	300	22	8.1^b	7.3^b
	4		28	1.9^a	1.6^a
Water permeability (L/sec.)	1	150	22	1.5		0.03	<0.001	<0.001
	2		28	1.2
	3	300	22	1.4
	4		28	0.5

Feedstuff	Incubation time (h)	DM degradability, %				>Ankom bags	>SEM	>Pvalue
		150		300
		30*22	30*28	30*22	30*28
		Samples No.
		1	2	3	4
Soybean meal	0	20.9^bc	18.1^b	24.3^c	10.8^a	19.7^bc	1.28	<0.001
	24	70.2^c	53.5^b	56.0^b	44.1^a	72.2^c	2.88	<0.001
	48	97.4^d	66.1^b	62.8^b	50.2^a	82.2^c	4.39	<0.001
Wheat bran	0	21.1^b	15.6^a	12.6^a	14.0^a	22.7^b	1.12	<0.001
	24	69.5^b	62.7^a	59.7^a	61.0^a	68.4^b	1.13	<0.001
	48	74.8^c	71.2^abc	72.7^bc	65.5^a	68.2^ab	1.01	0.004
Berseem hay	0	18.3	16.6	17.7	17.1	15.3	0.46	0.290
	24	56.2^b	46.4^a	45.3^a	42.3^a	59.7^b	1.85	<0.001
	48	61.6^c	61.3^c	58.8^bc	45.3^a	56.5^b	1.63	<0.001