Influence of dietary nitrogen sources with different ruminal degradability on growth performance of Comisana ewe lambs

2009 ◽  
Vol 81 (2-3) ◽  
pp. 132-136 ◽  
Author(s):  
V. Tufarelli ◽  
M. Dario ◽  
V. Laudadio
Keyword(s):  
Growth Performance ◽  
Nitrogen Sources ◽  
Dietary Nitrogen ◽  
Ewe Lambs ◽  
Ruminal Degradability

The effect of nitrogen source on the in vitro cellulose digestion of chemically treated oat straw and poplar wood

1974 ◽  
Vol 82 (3) ◽  
pp. 571-573 ◽  
Author(s):  
I. O. A. Adeleye ◽  
W. D. Kitts
Keyword(s):  
Ammonium Hydroxide ◽  
Nitrogen Sources ◽  
Energy Fraction ◽  
Digestible Energy ◽  
Dietary Nitrogen ◽  
Microbial Nitrogen ◽  
Appropriate Treatment ◽  
Gross Energy ◽  
Micro Organisms

The gross energy of forages can be classified into three fractions, namely the unavailable fraction, the digestible energy fraction and the potentially digestible energy (PDE) fraction. The PDE fraction can only be made available by appropriate treatment and supplementation (Pigden & Heaney, 1969). In young forages the PDE fraction is relatively insignificant, but as the plant matures, the PDE fraction increases very rapidly. By treating matured forages with delignifying agents, increased nutrient digestibilities have been demonstrated Chandra & Jackson, 1971; Wilson & Pigden, 1964), but no significant improvement on the voluntary intake was achieved unless the treated material was supplemented with a source of nitrogen (Donefer, Adeleye & Jones, 1969). While Zafren (1960) used ammonium hydroxide (NH40H) as the treatment alkali, with the claim that the ammonium acetate resulting from the neutralization of the excess alkali could serve as an extra source of nitrogen in the treated straw, other investigators (Donefer et al. 1969) have adopted the method of supplementing the treated straw with a source of nitrogen. Since the efficiency with which dietary nitrogen is converted to microbial nitrogen in the rumen has a considerable influence on the efficiency the animal as a whole, studies herein reported were carried out to test the effectiveness with which rumen micro-organisms utilize different nitrogen sources in degrading cellulose in vitro.

Effects of zilpaterol hydrochloride on growth performance, carcass characteristics, and wholesale cut yield of hair-breed ewe lambs consuming feedlot diets under moderate environmental conditions

2011 ◽  
Vol 89 (12) ◽  
pp. 4188-4194 ◽  
Author(s):  
L. Avendaño-Reyes ◽  
U. Macías-Cruz ◽  
F. D. Álvarez-Valenzuela ◽  
E. Águila-Tepato ◽  
N. G. Torrentera-Olivera ◽  
...  
Keyword(s):  
Growth Performance ◽  
Environmental Conditions ◽  
Carcass Characteristics ◽  
Ewe Lambs ◽  
Zilpaterol Hydrochloride

The effect of dietary asynchrony on rumen nitrogen recycling in sheep

1995 ◽  
Vol 1995 ◽  
pp. 70-70 ◽  
Author(s):  
P. Holder ◽  
P.J. Buttery ◽  
P.C. Garnsworthy
Keyword(s):  
Nitrogen Deficiency ◽  
Nitrogen Sources ◽  
Ammonia Concentration ◽  
Rumen Bacteria ◽  
Dietary Energy ◽  
Nitrogen Recycling ◽  
Dietary Nitrogen ◽  
Dietary Nutrients ◽  
Rumen Nitrogen ◽  
Energy Components

Recent work (Sinclair et al. 1993) has suggested that synchronising the rate of rumen breakdown and availability of dietary energy and nitrogenous components can increase capture of rumen degradable nitrogen and improve efficiency of microbial protein synthesis. For rumen bacteria to function efficiently they require a supply of both energy and nitrogen sources together i.e a synchronous diet. Nitrogen recycling between the blood and the rumen is a major contributor to the nitrogen economy of the animal and supplies substantial quantities of nitrogen to the rumen bacteria (Kennedy & Milligan 1980). The amount of nitrogen recycled to the rumen is diet dependant. This dependency may not solely be due to the levels of dietary nutrients but also to their rate of breakdown and availability to the rumen bacteria. The predominant mechanism controlling nitrogen recycling between the blood and the rumen appears to be rumen ammonia concentration It has been suggested that the recycling of nitrogen between the blood urea pool and the rumen ammonia pool may be able to compensate for periods of dietary nitrogen deficiency in the rumen due to the asynchrony of availability of the nitrogen and energy components to the rumen bacteria.

EFFECT OF GROUP MATING SCHEMES ON LAMB GROWTH PERFORMANCE

2018 ◽  
Vol 21 (02) ◽  
pp. 49-52
Author(s):  
Ganbat D ◽  
Mandakh B ◽  
Baldan T
Keyword(s):  
Growth Performance ◽  
Control Group ◽  
Breeding Period ◽  
Mating Season ◽  
Weaning Weight ◽  
Mean Values ◽  
Ewe Lambs ◽  
Group Breeding ◽  
Lamb Growth ◽  
Mating Scheme

The study was aimed to determinate the effect of group mating scheme on lamb growth performance. Rams, representing different group mating scheme, were assigned to mate 60-80 ewes per a ram for a 45-day breeding period. In group mating scheme, each ram is placed in a separate pasture with a group of ewes gathered from participating herders involved in group breeding during mating season. The average birth, weaning and post weaning weight for lambs from the group mating of selected rams to selected ewes involved in the study were 4.4, 33.8 and 40 kg for male lambs and, 4.3, 29.8 and 35.7 kg for ewe lambs respectively. These figures indicate that progeny of that group mating scheme were 0.5 to 6.3 kg for male lambs and 0.6-5.5 kg for ewe lambs heavier than progeny of group mating of selected rams to randomly allocated ewes at different age of growth (P <0.05). Mean values of birth, weaning and post weaning weight of progeny for control group mating were lower (P < 0.05) than those of the progeny for all other groups of mating. 

Effect of dietary Tartary buckwheat extract supplementation on growth performance, meat quality and antioxidant activity in ewe lambs

Meat Science ◽  
2017 ◽  
Vol 134 ◽  
pp. 79-85 ◽  
Author(s):  
Junxing Zhao ◽  
Kan Li ◽  
Rui Su ◽  
Wenzhong Liu ◽  
Youshe Ren ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Growth Performance ◽  
Meat Quality ◽  
Tartary Buckwheat ◽  
Ewe Lambs

scholarly journals Pre-exercise Carbohydrate Drink Adding Protein Improves Post-exercise Fatigue Recovery

2021 ◽  
Vol 12 ◽  
Author(s):  
Albert Yi-Wey Tan ◽  
Sareena-Hanim Hamzah ◽  
Chih-Yang Huang ◽  
Chia-Hua Kuo
Keyword(s):  
G Protein ◽  
Endurance Performance ◽  
Nitrogen Sources ◽  
Time To Exhaustion ◽  
Antioxidant Power ◽  
Post Exercise ◽  
Dietary Nitrogen ◽  
Exercise Fatigue ◽  
Fatigue Recovery ◽  
Cycling Time

Purpose: This study aimed to assess the requirement of protein in pre-exercise carbohydrate drinks for optimal endurance performance at high intensity and post-exercise fatigue recovery.Methods: Endurance performance at 85% V.⁢O2peak of young men (age 20 ± 0.9 years, V.⁢2peak 49.3 ± 0.3 L/min) was measured for two consecutive days using cycling time to exhaustion and total work exerted 2 h after three isocaloric supplementations: RICE (50 g, protein: 1.8 g), n = 7; SOY + RICE (50 g, protein: 4.8 g), n = 7; and WHEY + RICE (50 g, protein: 9.2 g), n = 7.Results: Endurance performance was similar for the three supplemented conditions. Nevertheless, maximal cycling time and total exerted work from Day 1 to Day 2 were improved in the WHEY + RICE (+21%, p = 0.05) and SOY-RICE (+16%, p = 0.10) supplemented conditions, not the RICE supplemented condition. Increases in plasma interleukin-6 (IL-6) were observed 1 h after exercise regardless of supplemented conditions. Plasma creatine kinase remained unchanged after exercise for all three supplemented conditions. Increases in ferric reducing antioxidant power (FRAP) after exercise were small and similar for the three supplemented conditions.Conclusion: Adding protein into carbohydrate drinks provides no immediate benefit in endurance performance and antioxidant capacity yet enhances fatigue recovery for the next day. Soy-containing carbohydrate drink, despite 50% less protein content, shows similar fatigue recovery efficacy to the whey protein-containing carbohydrate drink. These results suggest the importance of dietary nitrogen sources in fatigue recovery after exercise.

Amino and urea nitrogen levels in lambs receiving different nitrogen sources and injections of lysine and methionine

1969 ◽  
Vol 47 (11) ◽  
pp. 929-934 ◽  
Author(s):  
D. G. Ely ◽  
C. O. Little ◽  
G. E. Mitchell Jr.
Keyword(s):  
Amino Acid ◽  
Amino Nitrogen ◽  
Nitrogen Sources ◽  
Total Amino Acid ◽  
Urea Nitrogen ◽  
Plasma Urea ◽  
Nitrogen Levels ◽  
Dietary Nitrogen ◽  
Tissue Protein Synthesis ◽  
Time Of Feeding

Two trials were conducted to study changes in plasma urea and amino nitrogen of lambs fed different nitrogen sources. In the first trial, zein, zein and urea, or urea were fed as the only dietary nitrogen sources. Nitrogen balance data indicated the superiority of the zein–urea ration. Plasma amino acid concentrations were lower at 4 h after feeding than just before feeding. The concentration of total plasma amino acids was greatest when zein was fed and least when the zein–urea ration was fed. Lysine injections into the systemic blood caused a steady decline in total amino acid concentration up to 60 min after injection when zein was fed. Increases in total concentrations were noted after injection when urea had been fed. Intermediate values resulted in lambs fed the zein–urea ration. Lysine appeared to be the limiting amino acid required for maximum tissue protein synthesis when zein was fed. In the second trial, zein, purified soy protein, urea plus sulfur, and urea without sulfur were fed. Plasma collected from lambs fed zein contained less urea nitrogen at every collection period than those fed the other three nitrogen sources. Urea nitrogen decreased from time of feeding to 4 h after feeding zein and soy but increased after feeding both urea rations. Plasma amino nitrogen decreased from time of feeding to 4 h after feeding all rations. Neither urea nitrogen nor amino nitrogen was affected by intravenous amino acid injections.

scholarly journals Breast milk urea as a nitrogen source for urease positive Bifidobacterium infantis

2021 ◽  
Vol 97 (3) ◽  
Author(s):  
Patrick Schimmel ◽  
Lennart Kleinjans ◽  
Roger S Bongers ◽  
Jan Knol ◽  
Clara Belzer
Keyword(s):  
Breast Milk ◽  
Human Milk ◽  
Synthetic Medium ◽  
Nitrogen Sources ◽  
Fold Increase ◽  
Protein Nitrogen ◽  
Breastfed Infants ◽  
Dietary Nitrogen ◽  
Health Promoting ◽  
Milk Urea

ABSTRACT Human milk stimulates a health-promoting gut microbiome in infants. However, it is unclear how the microbiota salvages and processes its required nitrogen from breast milk. Human milk nitrogen sources such as urea could contribute to the composition of this early life microbiome. Urea is abundant in human milk, representing a large part of the non-protein nitrogen (NPN). We found that B. longum subsp. infantis (ATCC17930) can use urea as a main source of nitrogen for growth in synthetic medium and enzyme activity was induced by the presence of urea in the medium. We furthermore confirmed the expression of both urease protein subunits and accessory proteins of B. longum subsp. infantis through proteomics. To the same end, metagenome data were mined for urease-related genes. It was found that the breastfed infant's microbiome possessed more urease-related genes than formula fed infants (51.4:22.1; 2.3-fold increase). Bifidobacteria provided a total of 106 of urease subunit alpha alignments, found only in breastfed infants. These experiments show how an important gut commensal that colonizes the infant intestine can metabolize urea. The results presented herein further indicate how dietary nitrogen can determine bacterial metabolism in the neonate gut and shape the overall microbiome.

Sign in / Sign up

Export Citation Format

Share Document