Prediction of the useful energy in tropical feeds from proximate composition and in vivo derived energetic contents 1. Metabolisable energy

Abate, A.; Mayer, M.

doi:10.1016/s0921-4488(96)00959-5

Cited by 10 publications

(5 citation statements)

References 9 publications

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“…Metabolizable energy intake (MEI; kJ ME/kg BW 0.75 ) was estimated according to Luo et al ( 2004 ), MEI = 533 + (43.2 × ADG (g/kg BW 0.75 )). Metabolizable energy (ME; MJ/kg DM) contents of total diets were predicted from the equations of Abate and Meyer ( 1997 ) as ME = 5.34 − 0.1365CF + 0.6926NFE − 0.0152NFE 2 + 0.0001NFE 3 , where NFE is nitrogen-free extract. Protein efficiency ratio (PER; McDonald et al 2010 ) was determined as PER = % Protein in diet × Weight of diet consumed.…”

Section: Methodsmentioning

confidence: 99%

Response to dietary tannin challenges in view of the browser/grazer dichotomy in an Ethiopian setting: Bonga sheep versus Kaffa goats

Kechero

Kibreab

Tolemariam

et al. 2015

Trop Anim Health Prod

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It has been suggested that goats (typical browser) are better adapted to digest tannin-rich diets than sheep (typical grazer). To evaluate this, Bonga sheep and Kaffa goats were used in a 2 × 3 randomized crossover design with two species, three diets, and three periods (15-day adaptation + 7-day collection). The dietary treatments consisted of grass-based hay only (tannin-free diet = FT), a high-tannin diet (36 % Albizia schimperiana (AS) + 9 % Ficus elastica (FE) + 55 % FT (HT)), and HT + polyethylene glycol 6000 (PEG). Animals were individually fed at 50 g dry matter (DM)/kg body weight (BW) and had free access to clean drinking water and mineralized salt licks. Nutrient intake, apparent nutrient digestibility, nutrient conversion ratios, and live weight changes were determined. Condensed tannin concentrations in AS and FE were 110 and 191 g/kg DM, respectively. Both sheep and goats ate 47 % more of HT than FT, and dry matter intake further increased by 9 % when PEG was added, with clear difference in effect size between goats and sheep (P < 0.001). The effects of the tannin-rich diet and PEG addition were similarly positive for DM digestibility between sheep and goats, but crude protein (CP) digestibility was higher in HT + PEG-fed goats than in sheep fed the same diet. However, PEG addition induced a larger improvement in growth performance and feed efficiency ratio in sheep than in goat (P < 0.001). The addition of PEG as a tannin binder improved digestion and performance in both species, but with the highest effect size in sheep.

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Section: Methodsmentioning

confidence: 99%

Response to dietary tannin challenges in view of the browser/grazer dichotomy in an Ethiopian setting: Bonga sheep versus Kaffa goats

Kechero

Kibreab

Tolemariam

et al. 2015

Trop Anim Health Prod

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“…measuremeNTs TakeN feed, NuTrieNT aNd eNergy iNTakes Feeds and refusals were daily collected and the samples were analyzed for dry matter (DM), organic matter (OM), crude protein (CP), crude fiber (CF), ether extract (EE) following the procedures of AOAC (1990), neutral detergent fiber (NDF) and acid detergent fiber (ADF) according to Van Soest et al (1991). Metabolizable energy (ME) content of feeds was estimated by the formula suggested by Abate and Mayer (1997), in which for the forages: ME (MJ/kgDM) = 20.27 -0.1431CF -0.1110NFE -0.2200 Ash and for the concentrates: ME (MJ/kgDM)= − 4.80 + 0.6004CF -0.0640CF 2 + 1.1572NFE -0.0236NFE 2 + 0,00014NFE 3 . The metabolizable energy intake was calculated by the formula proposed by Bruinenberg et al (2002), in which ME (MJ/animal/day) = 15.1 x DOM (with DOM/ DCP>7.0; DOM is digestible organic matter and DCP is digestible crude protein) of the diets.…”

Section: Experimental Design Feeds and Feedingmentioning

confidence: 99%

Effect of Dietary Levels of Neutral Detergent Fiber on Feed Intake, Nutrient Digestibility, Rumen Parameters and Nitrogen Retention of Beef Cattle

Truong¹,

Thu²

2021

AAVS

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The objective of this study was to evaluate effects of dietary levels of neutral detergent fiber (NDF) on feed intake, nutrients digestibility, rumen parameters and nitrogen retention of crossbred beef cattle (Black Angus × Zebu crossbred). Four male cattle at 17.5±1.78 (Mean±SD) months of age with an average live weight of 262±20.5 kg (Mean±SD) was allocated in a 4x4 Latin square design. The treatments were 47, 51, 55 and 59% NDF in diets corresponding to NDF47, NDF51, NDF55 and NDF59 treatments following the previous findings of the in vitro experiment. Each experimental period was two weeks including one week for adaptation and another one for sampling. The results showed that nutrient intakes (kg/animal/day) were similar (P>0.05) among treatments, however DM and OM intakes were numerically higher for the NDF55 treatment compared with the others. Digestibilities (%) of DM and OM were significantly different (P<0.05) among treatments and gradually decreased from the NDF47 to NDF59, however these values between NDF51 and NDF55 were not significantly different (P>0.05). Rumen pH, N-NH 3 , and VFAs concentration values before (0h) and 3h after feeding were similar (P>0.05) among treatments. Nitrogen retention value was numerically higher in NDF47, NDF51 and NDF55 treatments compared with NDF59 treatment (P>0.05) and a similar trend of the observed daily weight gain was found in the treatments. It was concluded that increasing levels of NDF in cattle diets from 47 to 59% reduced DM and OM digestibility while nitrogen retention and daily weight gain decreased slightly. Content of 55% NDF in the diet could be properly recommended for further study in terms of available forage utilization and daily weight gain.

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“…Gross energy (GE) of feeds and feces were determined by using Calorimeter (KIKA ® WERKE C5001). Metabolizable energy (ME) was 1164 estimated according to the equations of Abate and Meyer (1997) where ME (MJ kg −1 DM) = 20.27 − 0.1431CF − 0.111 NFE − 0.2200 Ash. Metabolic water was calculated as one g TDN intake ields for 0.6 g of water.…”

Section: Laboratory Analysismentioning

confidence: 99%

Utilization of Trimming Waste of Mandarin Trees as Feed for Small Ruminants 1: Palatability and Nutritive Value for Treated vs. Untreated Wastes and the Effect on Animal Immune Status

Bakr¹,

Kewan²,

Nassar³

et al. 2020

IJAR

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much more (P<0.05) water than the other three groups. Meanwhile, animals fed ZTW ration showed the highest (Ρ<0.05) value of insensible water loss. The rumen fermentation indicators (pH, NH 3-N and TVFA's) were also investigated. Serum total proteins and Albumins exhibited almost similar values for the experimental groups. Animals fed treated trimming waste (YTW and ZTW) expressed higher values of Kidney function indicators (creatinine, urea, and uric acid) as compared with the other two groups (UTW and BH). The experimental diets has no effect (P<0.01) on blood concentration of total antioxidant capacity (TAC) and liver enzymes (aspartate amino transferase, alanine amino transferase, gama glutamyl transferase and alkaline phosphatase. Values of RBC's and Hb were similar in both YTW and ZTW groups compared to UTW. The values of serum immunoglobulins (IgG and IgM) in rams were higher (P<0.05) in those fed trimming waste than that fed BH. So, it can be concluded that using biologically treated trimming waste of mandarin trees could cover the nutrients required for maintenance of sheep under the desert conditions and enhanced animal immune status as well as reduction of feed cost and preventing environmental pollution.

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Prediction of the useful energy in tropical feeds from proximate composition and in vivo derived energetic contents 1. Metabolisable energy

Cited by 10 publications

References 9 publications

Response to dietary tannin challenges in view of the browser/grazer dichotomy in an Ethiopian setting: Bonga sheep versus Kaffa goats

Response to dietary tannin challenges in view of the browser/grazer dichotomy in an Ethiopian setting: Bonga sheep versus Kaffa goats

Effect of Dietary Levels of Neutral Detergent Fiber on Feed Intake, Nutrient Digestibility, Rumen Parameters and Nitrogen Retention of Beef Cattle

Utilization of Trimming Waste of Mandarin Trees as Feed for Small Ruminants 1: Palatability and Nutritive Value for Treated vs. Untreated Wastes and the Effect on Animal Immune Status

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