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Meat Sci. 2016 Nov;121:141-147. doi: 10.1016/j.meatsci.2016.06.006. Epub 2016 Jun 9.

The influence of peri-conception and first trimester dietary restriction of protein in cattle on meat quality traits of entire male progeny.

Author information

1
School of Rural and Environmental Science, University of New England, Armidale, NSW 2351, Australia. Electronic address: tharcilla.costa@gmail.com.
2
Robinson Research Institute, School of Medicine, University of Adelaide, Adelaide, SA 5005, Australia.
3
School of Rural and Environmental Science, University of New England, Armidale, NSW 2351, Australia.
4
NSW Department of Primary Industries, Wagga Wagga Agricultural Institute, Wagga Wagga, NSW 2650, Australia.
5
The Chancellery, University of Newcastle, Newcastle, NSW 2308, Australia.
6
School of Veterinary and Medical Science, University of Nottingham, Sutton Bonington LE12 5RD, United Kingdom.

Abstract

Primiparous Santa Gertrudis heifers were used to evaluate the effects of gestational dietary protein content on meat quality traits of 20month old bull progeny (n=40). At -60d before AI, heifers were randomly allocated to HIGH or LOW protein diet (HPERI and LPERI). From 24dpc, half of each treatment group changed to an alternative post-conception HIGH or LOW protein diet (HPOST and LPOST). LPERI and LPOST diets resulted in higher shear force of the semitendinosus muscle than HPERI (P=0.053) and HPOST (P=0.003), respectively. Heat-soluble collagen in the semitendinosus muscle was lower (P=0.019) for LPERI than HPERI. Collagen and tenderness of the longissimus muscle were not affected by dam nutrition (P>0.05). Color, pH, sarcomere length, cooking loss, compression values, desmin and troponin-T degradation, fiber type, intramuscular fat and polyunsaturated fatty acid content were not affected by dam nutrition during the peri-conception and first trimester gestational period (P>0.05).

KEYWORDS:

Collagen; Fatty acid; Fiber type; Maternal nutrition; Post mortem proteolysis; Tenderness

PMID:
27317848
DOI:
10.1016/j.meatsci.2016.06.006
[Indexed for MEDLINE]

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