Impacts of Rumen Degradable or Undegradable Protein Supplementation with or without Salt on Nutrient Digestion, and VFA Concentrations

The objectives of this study were to evaluate the effect of differences in protein type and delivery method on rumen dynamics and nutrient digestion. Cows were allotted to rumen degradable protein (RDP) or rumen undegradable protein (RUP) and self-fed (SF) salt-limited pressed blocks or hand-fed (HF...

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Autores principales:	Marley Manoukian, Timothy DelCurto, Janessa Kluth, Tanner Carlisle, Noah Davis, Makae Nack, Samuel Wyffels, Abe Scheaffer, Megan Van Emon
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	beef cattle delivery method digestion rumen degradable protein rumen undegradable protein Veterinary medicine SF600-1100 Zoology QL1-991
Acceso en línea:	https://doaj.org/article/d8bdc0d29aa84e7bb96ddf1e91fb47f3
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spelling	oai:doaj.org-article:d8bdc0d29aa84e7bb96ddf1e91fb47f32021-11-25T16:13:33ZImpacts of Rumen Degradable or Undegradable Protein Supplementation with or without Salt on Nutrient Digestion, and VFA Concentrations10.3390/ani111130112076-2615https://doaj.org/article/d8bdc0d29aa84e7bb96ddf1e91fb47f32021-10-01T00:00:00Zhttps://www.mdpi.com/2076-2615/11/11/3011https://doaj.org/toc/2076-2615The objectives of this study were to evaluate the effect of differences in protein type and delivery method on rumen dynamics and nutrient digestion. Cows were allotted to rumen degradable protein (RDP) or rumen undegradable protein (RUP) and self-fed (SF) salt-limited pressed blocks or hand-fed (HF) loose supplement, resulting in four dietary treatments. There was a delivery effect (<i>p</i> = 0.04) on neutral detergent fiber (NDF) intake, as the SF animals consumed more NDF than HF animals. The RDP-SF animals had greater NDF digestibility (<i>p</i> = 0.04) and water intake (<i>p</i> = 0.03) than the three other treatments. Supplement intake displayed a protein type effect (<i>p</i> = 0.03), as RDP-supplemented animals consumed more supplement on a g·kg body weight (BW)<sup>−1</sup> d<sup>−1</sup> basis than RUP animals. There was an effect of protein type (<i>p</i> = 0.02) and delivery method (<i>p</i> = 0.03) on fluid flow rate, with RUP and HF cows having greater liquid flow rates. Ruminal pH was lower (<i>p</i> < 0.01) in RDP-HF cows than RDP-SF cows at all hours, except 4-h post-feeding. RDP-SF animals had the greatest (<i>p</i> < 0.01) concentrations of ruminal ammonia. Valerate ruminal concentrations were greater (<i>p</i> = 0.04) in RDP supplemented animals compared to RUP supplemented animals. In conclusion, self-fed supplements containing RDP may enhance the use of low-quality forages and increase ruminal ammonia concentrations.Marley ManoukianTimothy DelCurtoJanessa KluthTanner CarlisleNoah DavisMakae NackSamuel WyffelsAbe ScheafferMegan Van EmonMDPI AGarticlebeef cattledelivery methoddigestionrumen degradable proteinrumen undegradable proteinVeterinary medicineSF600-1100ZoologyQL1-991ENAnimals, Vol 11, Iss 3011, p 3011 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	beef cattle delivery method digestion rumen degradable protein rumen undegradable protein Veterinary medicine SF600-1100 Zoology QL1-991
spellingShingle	beef cattle delivery method digestion rumen degradable protein rumen undegradable protein Veterinary medicine SF600-1100 Zoology QL1-991 Marley Manoukian Timothy DelCurto Janessa Kluth Tanner Carlisle Noah Davis Makae Nack Samuel Wyffels Abe Scheaffer Megan Van Emon Impacts of Rumen Degradable or Undegradable Protein Supplementation with or without Salt on Nutrient Digestion, and VFA Concentrations
description	The objectives of this study were to evaluate the effect of differences in protein type and delivery method on rumen dynamics and nutrient digestion. Cows were allotted to rumen degradable protein (RDP) or rumen undegradable protein (RUP) and self-fed (SF) salt-limited pressed blocks or hand-fed (HF) loose supplement, resulting in four dietary treatments. There was a delivery effect (<i>p</i> = 0.04) on neutral detergent fiber (NDF) intake, as the SF animals consumed more NDF than HF animals. The RDP-SF animals had greater NDF digestibility (<i>p</i> = 0.04) and water intake (<i>p</i> = 0.03) than the three other treatments. Supplement intake displayed a protein type effect (<i>p</i> = 0.03), as RDP-supplemented animals consumed more supplement on a g·kg body weight (BW)<sup>−1</sup> d<sup>−1</sup> basis than RUP animals. There was an effect of protein type (<i>p</i> = 0.02) and delivery method (<i>p</i> = 0.03) on fluid flow rate, with RUP and HF cows having greater liquid flow rates. Ruminal pH was lower (<i>p</i> < 0.01) in RDP-HF cows than RDP-SF cows at all hours, except 4-h post-feeding. RDP-SF animals had the greatest (<i>p</i> < 0.01) concentrations of ruminal ammonia. Valerate ruminal concentrations were greater (<i>p</i> = 0.04) in RDP supplemented animals compared to RUP supplemented animals. In conclusion, self-fed supplements containing RDP may enhance the use of low-quality forages and increase ruminal ammonia concentrations.
format	article
author	Marley Manoukian Timothy DelCurto Janessa Kluth Tanner Carlisle Noah Davis Makae Nack Samuel Wyffels Abe Scheaffer Megan Van Emon
author_facet	Marley Manoukian Timothy DelCurto Janessa Kluth Tanner Carlisle Noah Davis Makae Nack Samuel Wyffels Abe Scheaffer Megan Van Emon
author_sort	Marley Manoukian
title	Impacts of Rumen Degradable or Undegradable Protein Supplementation with or without Salt on Nutrient Digestion, and VFA Concentrations
title_short	Impacts of Rumen Degradable or Undegradable Protein Supplementation with or without Salt on Nutrient Digestion, and VFA Concentrations
title_full	Impacts of Rumen Degradable or Undegradable Protein Supplementation with or without Salt on Nutrient Digestion, and VFA Concentrations
title_fullStr	Impacts of Rumen Degradable or Undegradable Protein Supplementation with or without Salt on Nutrient Digestion, and VFA Concentrations
title_full_unstemmed	Impacts of Rumen Degradable or Undegradable Protein Supplementation with or without Salt on Nutrient Digestion, and VFA Concentrations
title_sort	impacts of rumen degradable or undegradable protein supplementation with or without salt on nutrient digestion, and vfa concentrations
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d8bdc0d29aa84e7bb96ddf1e91fb47f3
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Impacts of Rumen Degradable or Undegradable Protein Supplementation with or without Salt on Nutrient Digestion, and VFA Concentrations

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