Effects of broiler breeder age on immune system development of progeny

Santos, Januária Silva; Araújo, Itallo Conrado Sousa; Lacerda, Maria Juliana Ribeiro; Andrade, Maria Auxiliadora; Café, Marcos Barcellos; Leandro, Nadja Susana Mogyca; Stringhini, José Henrique

doi:10.37496/rbz5120210127

Januária Silva Santos

Data curation

Investigation

Universidade Federal de Goiás, Escola de Veterinária e Zootecnia, Departamento de Zootecnia, Goiânia, GO, Brasil.

http://orcid.org/0000-0001-6613-4819

Itallo Conrado Sousa Araújo ^* * Corresponding author: italloconradovet@hotmail.com

Visualization

Writing – original draft

Writing – review & editing

Universidade Federal de Minas Gerais, Escola de Veterinária, Departamento de Zootecnia, Belo Horizonte, MG, Brasil.

http://orcid.org/0000-0001-8882-3180

Maria Juliana Ribeiro Lacerda

Investigation

Universidade Federal de Goiás, Escola de Veterinária e Zootecnia, Departamento de Zootecnia, Goiânia, GO, Brasil.

http://orcid.org/0000-0002-8854-1594

Maria Auxiliadora Andrade

Investigation

Supervision

Writing – original draft

Universidade Federal de Goiás, Escola de Veterinária e Zootecnia, Goiânia, GO, Brasil.

http://orcid.org/0000-0002-8373-1671

Marcos Barcellos Café

Resources

Visualization

Universidade Federal de Goiás, Escola de Veterinária e Zootecnia, Departamento de Zootecnia, Goiânia, GO, Brasil.

http://orcid.org/0000-0002-1478-8009

Nadja Susana Mogyca Leandro

Formal analysis

Resources

Visualization

Writing – original draft

Universidade Federal de Goiás, Escola de Veterinária e Zootecnia, Departamento de Zootecnia, Goiânia, GO, Brasil.

http://orcid.org/0000-0002-6525-9975

José Henrique Stringhini

Conceptualization

Formal analysis

Funding acquisition

Investigation

Project administration

Resources

Supervision

Writing – original draft

Writing – review & editing

Universidade Federal de Goiás, Escola de Veterinária e Zootecnia, Departamento de Zootecnia, Goiânia, GO, Brasil.

http://orcid.org/0000-0002-3710-6963

* Corresponding author: italloconradovet@hotmail.com

Conflict of Interest

The authors declare no conflict of interest.

Breeder age (weeks)	Chick weight (g)	Liver (%)	Giz + Pro (%)	Spleen (%)	Bursa (%)	Pancreas (%)	Yolk sac (%)
Newly-hatched chicks at pulling
32	41.32^c a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	2.98^a a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	7.47^b a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	0.03	0.1	0.19	8.52^c a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).
42	44.19^b a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	2.96^a a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	8.21^b a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	0.02	0.1	0.18	11.38^b a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).
52	48.82^a a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	2.66^b a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	9.70^a a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	0.01	0.1	0.17	12.65^a a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).
SEM	1.55	0.22	0.56	0.001	0.001	0.001	1.18
P-value	0.019	<0.001	<0.001	0.891	0.911	0.877	<0.001
7 days
32	111.33^c a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	4.47^a a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	7.85^b a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	0.07	0.19	0.47	0.19
42	128.76^b a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	4.33^a a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	8.10^b a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	0.07	0.18	0.50	0.15
52	144.90^a a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	3.97^b a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	9.39^a a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	0.07	0.18	0.49	0.30
SEM	8.90	0.55	1.00	0.01	0.02	0.10	0.01
P-value	<0.001	0.004	<0.001	0.238	0.155	0.871	0.344
14 days
32	357.23^b a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	3.38	4.98	0.07	0.28	0.43	-
42	360.26^b a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	3.07	4.87	0.07	0.22	0.42	-
52	389.03^a a-c Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	3.41	5.57	0.08	0.22	0.47	-
SEM	11.14	0.90	0.99	0.01	0.01	0.10	-
P-value	<0.001	0.072	0.111	0.899	0.911	0.678	-

Breeder age (weeks)	Chick age
	At pulling		7 days		14 days
	Villus (µm)	Crypt (µm)	Villus (µm)	Crypt (µm)	Villus (µm)	Crypt (µm)
	Duodenum
32	672.0^a a-b Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	86.2	1,164.2	333.3	1,813.8	518.8
42	569.0^b a-b Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	86.2	1,176.0	324.9	1,759.9	527.8
52	574.0a^b a-b Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	91.5	1,164.1	315.4	1,828.9	515.2
SEM	29.0	3.0	49.0	13.0	48.0	18.4
P-value	0.021	0.098	0.124	0.432	0.872	0.287
	Jejunum
32	259.0	58.3	417.1	170.3	618.0	271.0
42	245.0	58.3	404.3	161.0	667.9	265.4
52	258.0	64.1	465.0	166.7	645.4	227.3
SEM	29.0	5.0	50.1	6.6	33.3	25.0
P-value	0.199	0.981	0.651	0.221	0.220	0.233

Breeder age (weeks)	Bursa of Fabricius			Spleen
Breeder age (weeks)	At pulling	7 days	14 days	At pulling	7 days	14 days
32	8.85^b a-b Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	13.22^b a-b Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	16.13^b a-b Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	7.13	11.60	12.33
42	11.00^a a-b Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	16.52^a a-b Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	18.30^a a-b Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	7.80	11.31	12.00
52	10.00^a a-b Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	15.40^a a-b Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	19.46^a a-b Means followed by different letters in the column differ between each other by Tukey’s test (P<0.05).	7.99	11.42	11.00
SEM	0.5	0.09	0.29	0.91	0.55	1.00
P-value	<0.001	0.003	<0.001	0.222	0.956	0.871

[1] * Corresponding author: italloconradovet@hotmail.com

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Effects of broiler breeder age on immune system development of progeny

ABSTRACT