Effects of encapsulated nitrate on growth performance, nitrate toxicity, and enteric methane emissions in beef steers: Backgrounding phase

2017 ◽  
Vol 95 (8) ◽  
pp. 3700
Author(s):  
C. Lee ◽  
R. C. Araujo ◽  
K. M. Koenig ◽  
K. A. Beauchemin
Keyword(s):  
Growth Performance ◽  
Methane Emissions ◽  
Beef Steers ◽  
Enteric Methane ◽  
Enteric Methane Emissions

Influence of graded levels of baobab oil seed cake on growth performance and enteric methane emissions in Savannah × Boer crossbreed yearling goats.

2020 ◽  
Author(s):  
Samkelo Saho ◽  
Olusegun O Ikusika ◽  
Conference Thando Mpendulo ◽  
John Mupangwa ◽  
Davison Moyo
Keyword(s):  
Growth Performance ◽  
Body Weight Gain ◽  
Block Design ◽  
Average Daily Gain ◽  
Methane Emissions ◽  
Adaptation Period ◽  
Seed Cake ◽  
Oil Seed ◽  
Enteric Methane ◽  
Enteric Methane Emissions

Abstract Background: The recent concern on the emission of methane from ruminant livestock that contributes to climate change has called for a search of feed ingredient that will mitigate the emission of this gas at the same time increase the growth performance of the animal. One of such feed ingredients could be baobab oil seed cake. This study therefore, investigate the effects of feeding graded levels of baobab oil seed cake (BOSC) on growth performance and enteric methane emissions of Savannah × Boer goats at yearling age.Methods: A total of 24 goats weighing 16.63 ± 3.639 kg were used in a completely randomized block design. The study was conducted for a period of 70 days, with an adaptation period of 14 days. The baobab oil seed cake was included in the diets at 0% (control diet), 15%, 30% and 45 % on a mass basis. The experimental diets were iso-nitrogenous and iso-caloric. The parameters measured include the average daily feed intake (ADFI), body weight gain (BWG), and average daily gain (ADG), feed conversion ratio (FCR), and enteric methane emissions using Laser methane detector (LMD).Results The inclusion of baobab oil seed cake (15%, 30%, and 45% BOSC) in goats’ diets significantly increased (P<0.05) (ADFI). Females in the current study gained more weight than males. It was observed that goats fed diets with 0% baobab oil cake emitted higher methane output (P<0.05). Methane emission decreased as the baobab inclusion levels in the diet increase (P<0.05). Female Savannah ´ Boer goat emitted more methane than male (P<0.05). Both sex and baobab oil cake inclusion levels contributed significantly to methane emissions individually and interactively. Conclusion: Inclusion of baobab oil seed cake in the diet improved growth performance and could also be used to mitigate methane production in Savannah × Boer crossbreed goats at a range of 15 to 45 % inclusion levels without causing any detrimental effects on the goats.’

scholarly journals Methane Emissions, Performance and Carcass Characteristics of Different Lines of Beef Steers Reared on Pasture and Finished in Feedlot

Animals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 303 ◽  
Author(s):  
Paulo Méo-Filho ◽  
Alexandre Berndt ◽  
Cintia R. Marcondes ◽  
André F. Pedroso ◽  
Leandro S. Sakamoto ◽  
...  
Keyword(s):  
Methane Emissions ◽  
Feed Consumption ◽  
Beef Steers ◽  
Feed Conversion ◽  
Performance And Emission ◽  
Enteric Methane ◽  
Genetically Improved ◽  
Grazing Period ◽  
The Cross ◽  
Enteric Methane Emissions

The present study aimed to investigate whether different lines of a composite breed (5/8 Charolais × 3/8 Zebu), formed at different times, and genetically improved, would result in differences in animal performance, enteric methane emissions, and carcass traits. Forty-six Canchim steers (15 months, 280 ± 33 kg liveweight) from three different lines were used: old, new, and their cross. These three breed lines were considered the treatments (arranged in four randomized blocks based on initial liveweight) and were evaluated under grazing and feedlot conditions in relation to the performance and emission of enteric methane. During the grazing period, the new line was found to be superior to the old only in relation to the average daily liveweight gain (0.692 vs. 0.547 kg/day), and with no differences in relation to the cross line (0.692 vs. 0.620). In the feedlot finishing phase, only the average daily liveweight gain was significantly higher in the new line compared to the cross and old line (1.44 vs. 1.32 and 1.23 kg/day). The new and cross lines demonstrated higher dry matter intake when compared to the old line (10.25 and 10.42 vs. 9.11 kg/day), with the crossline animals demonstrating the best feed conversion. The new line showed higher enteric methane emissions compared to the old line (178 vs. 156 g/day). The line had an effect on the carcass dressing of the animals, with greater fat thickness in carcasses from the new and cross lines than the old line (4.4 and 3.8 vs. 3.2 mm). Canchim cattle selected for improved productive performance characteristics does not guarantee animals with lower methane emissions under grazing conditions; while in feedlots, can lead to increased daily feed consumption, and hence, to higher emissions of methane.

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