scholarly journals Growth, Feed Conversion Efficiency and Carcass Characteristics of Malpura and Malpura × Awassi Crossbred Lambs in a Hot Semi Arid Environment

2002 ◽  
Vol 15 (3) ◽  
pp. 377-381 ◽  
Author(s):  
S. A. Karim ◽  
A. Santra ◽  
D. L. Verma
Keyword(s):  
Conversion Efficiency ◽  
Carcass Characteristics ◽  
Arid Environment ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Semi Arid

scholarly journals Effects of dietary vitamin E supplementation on fattening performance, carcass characteristics and meat quality traits of Karya male lambs

2009 ◽  
Vol 52 (6) ◽  
pp. 618-626 ◽  
Author(s):  
O. Atay ◽  
Ö. Gökdal ◽  
V. Eren ◽  
Ş. Çetiner ◽  
H. Yikilmaz
Keyword(s):  
Vitamin E ◽  
Meat Quality ◽  
Conversion Efficiency ◽  
Carcass Characteristics ◽  
Dietary Vitamin ◽  
Quality Traits ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Meat Quality Traits ◽  
Vitamin E Supplementation

Abstract. The objective of this study was to evaluate the effects of dietary vitamin E supplementation on performance, slaughter-carcass characteristics and meat quality traits of Karya male lambs. Lambs weaned approximately at 10 weeks of age were divided into two groups. After the 10 days adaptation period, control group (CG, n7) and vitamin E group (VEG, n=6) lambs were fed on with concentrates ad libitum and 100 g hay/lamb/day for 70 days. In addition the VEG received a supplement on concentrates of 45 mg/lamb/day vitamin E during the fattening period. The meat quality traits were determined using m. longissimus dorsi (LD) obtained from split between 12th and 13th ribs on both groups lambs. Daily gain and feed conversion efficiency were 259 g and 5.3 for CG and 266 g and 4.7 for VEG, respectively. There was no vitamin E supplementation effect on the average daily weight gain and feed conversion efficiency (P>0.05). However, VEG had 10.5 % higher feed conversion efficiency than control lambs. Slaughter and carcass characteristics of lambs were not significantly affected from vitamin E supplementation (P>0.05). There were no effects of vitamin E supplementation on lightness (L*), redness (a*), yellowness (b*) and pH during 12-day aerobic storage. Thiobarbituric acid reactive substances (TBARS) values at day 2 were not affected by the vitamin E treatment. However, TBARS values on day 4 and 8 (P<0.05), and day 12 (P<0.01) were higher in the CG than in the VEG. Although not significant, 10 % higher feed conversion efficiency in VEG animals might suggest that vitamin E supplementation is useful to improve fattening performance.

The effects of sequence of feed allocation within the day on the growth and carcass characteristics of lambs fed barley based diets

1999 ◽  
Vol 1999 ◽  
pp. 27-27 ◽  
Author(s):  
J. M. Richardson ◽  
L. A. Sinclair ◽  
R. G. Wilkinson
Keyword(s):  
Growth Rate ◽  
Conversion Efficiency ◽  
Carcass Characteristics ◽  
Current Experiment ◽  
Feed Conversion ◽  
Feed Ingredients ◽  
Increase Growth Rate ◽  
Feed Conversion Efficiency ◽  
N Release ◽  
Ram Lambs

Feeding lambs diets formulated to be synchronous for their hourly release of energy and nitrogen (N) in the rumen has been shown to increase growth rate and feed conversion efficiency (Witt et al. 1997). However the diets used contained different feed ingredients and therefore the differences in performance may have been due to some aspect of the diet that was not characterised. The objectives of the current experiment were to supply the same quantity of feed ingredients over a 24h period but alter the sequence of allocation within the day to achieve different patterns of energy and N release in the rumen and investigate the effects on growth and metabolism of ram lambs when fed at a restricted level.

Sewage-grown algae as a protein supplement for swine

1967 ◽  
Vol 9 (2) ◽  
pp. 135-140 ◽  
Author(s):  
H. F. Hintz ◽  
H. Heitman
Keyword(s):  
Conversion Efficiency ◽  
Fish Meal ◽  
Carcass Characteristics ◽  
B Vitamins ◽  
Vitamin B ◽  
Protein Supplement ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Algal Diets ◽  
Algal Diet

In two trials with 48 pigs it was found that when algae supplemented with certain B-vitamins replaced fish meal on an equal-nitrogen basis in a diet based on barley and fish meal there was no decrease in rate of gain or feed conversion efficiency. When vitamin B12 was omitted from the algal diet, there was a decrease in rate of gain. There were no consistent differences in carcass characteristics between pigs fed on the algal diets and those fed ondiets containing fish meal. Digestibility studies indicated that algae are low in digestible energy, but their protein is 70% digestible.

scholarly journals Evolution in Configuration and Productivity of New Zealand Hill Country Sheep and Beef Cattle Systems

Agriculture ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 531
Author(s):  
Januarius Gobilik ◽  
Stephen Todd Morris ◽  
Cory Matthew
Keyword(s):  
New Zealand ◽  
Beef Cattle ◽  
Conversion Efficiency ◽  
Production Systems ◽  
Metabolic Energy ◽  
Meat Production ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Hill Country ◽  
Cattle Systems

Metabolic energy budgeting (MEB) was used to evaluate evolution over 30 years (1980–1981 to 2010–2011) in New Zealand southern North Island ‘hill country’ sheep and beef cattle systems. MEB calculates energy required by animals for body weight maintenance, weight gain or loss, pregnancy, and lactation to estimate the system feed demand and thereby provide a basis for calculating feed conversion efficiency. Historic production systems were reconstructed and modeled using averaged data from industry surveys and data from owners’ diaries of three case-study farms and reviewed for patterns of change over time. The modeling indicated that pasture productivity was 11% lower and herbage harvested was 14% lower in 2010–2011 than in the early 1980s. This productivity decline is attributable to warmer, drier summer weather in recent years. However, primarily through increased lambing percentage, feed conversion efficiency based on industry data improved over the study period from 25 to 19 kg feed consumed per kg lamb weaned, while meat production rose from 137 to 147 kg per ha per year. Similar improvements were observed for the three case farms. The New Zealand MEB model was found effective for analysis of tropical beef production systems in Sabah, Malaysia.

Heterozygous depletion of pik3r1 improves growth and feed conversion efficiency in Gibel carp (Carassius gibelio)

Aquaculture ◽  
2021 ◽  
pp. 737207
Author(s):  
Jianfei Huang ◽  
Chuang Shi ◽  
Yanping Gao ◽  
Jingzhi Su ◽  
Yuqin Shu ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Gibel Carp ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Carassius Gibelio

scholarly journals Effect of forage to concentrate ratio and duration of feeding on growth and feed conversion efficiency of male lambs

2018 ◽  
Vol 2 (4) ◽  
pp. 419-427 ◽  
Author(s):  
Noel A Claffey ◽  
Alan G Fahey ◽  
Vasiliki Gkarane ◽  
Aidan P Moloney ◽  
Frank J Monahan ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Carcass Weight ◽  
Feed Conversion ◽  
Fresh Weight ◽  
Viable Option ◽  
Financial Return ◽  
Feed Conversion Efficiency ◽  
Ad Libitum ◽  
The Cost ◽  
Concentrate Inclusion

Abstract Rations (DM basis) for spring-born male lambs consisting of concentrates ad libitum (CON), 50:50 (50% concentrate:50% forage), and forage ad libitum (FORG) were evaluated across feeding periods of three durations (36, 54, and 72 d). Lambs on CON diets were offered ad libitum access to concentrate along with 400 g of fresh weight silage (daily), while 50:50 diets were offered 0.9 and 3.0 kg of concentrate and silage, respectively. Lambs on FORG were offered ad libitum access to 25.5% DM silage. These rations were fed to 99 spring-born male Texel cross Scottish Blackface lambs which were assigned to a 3 × 3 factorial arrangement. Lambs were slaughtered following completion of their respective treatments. Lambs fed CON diets had greater ADG, FCE, and carcass weight (P &lt; 0.001) and carcasses with greater conformation score (P &lt; 0.001) than lambs fed 50:50 or FORG diets. Duration of feeding had no effect on production variables across all three concentrate inclusion levels. It was concluded that the inclusion of concentrates is needed to adequately finish lambs fed indoors. Feeding lamb’s 50:50 diets resulted in modest responses and may be a viable option for finishing lambs or to maintain growth in lambs when the cost of concentrate feed is high relative to the financial return on the lamb meat.

scholarly journals Effects of feed intake and genetics on tissue nitrogen-15 enrichment and feed conversion efficiency in sheep1

2015 ◽  
Vol 93 (12) ◽  
pp. 5849-5855 ◽  
Author(s):  
L. Cheng ◽  
C. M. Logan ◽  
R. J. Dewhurst ◽  
S. Hodge ◽  
H. Zhou ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Feed Intake ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Tissue Nitrogen

scholarly journals Feed Conversion Efficiency (FCE) in Relation to Reproductive Performance of Sow

2018 ◽  
Vol 7 (1) ◽  
pp. 2915-2919
Author(s):  
Kandarpa Boruah ◽  
Jitendra Saharia ◽  
Simson Soren ◽  
Karuna Saikia ◽  
Arindam Chakraborty ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Reproductive Performance ◽  
Feed Conversion ◽  
Feed Conversion Efficiency

scholarly journals Effect of Diatomaceous Earth on Growth Rate, Egg Production, Feed Conversion Efficiency and Parasitic Load in Hens Raised on Deep Litter

2021 ◽  
Vol 3 (1) ◽  
pp. 97-103
Author(s):  
Robert Alex Isabirye ◽  
Savino Biryomumaisho ◽  
James Okwee-Acai ◽  
Samuel Okello ◽  
George William Nasinyama
Keyword(s):  
Growth Rate ◽  
Conversion Efficiency ◽  
Egg Production ◽  
Diatomaceous Earth ◽  
Agricultural Research ◽  
Ascaridia Galli ◽  
Feed Conversion ◽  
Indigenous Chicken ◽  
Feed Conversion Efficiency ◽  
Treatment Groups

The efficacy of diatomaceous earth (DE) on growth rate, egg production and on increasing feed conversion efficiency in deep litter raised layer hens was evaluated. The study was conducted at Mukono Zonal Agricultural Research and Development Institute (MUZARDI) in Uganda. Worms were collected from fresh intestines of indigenous chicken obtained from Kalerwe chicken market near Kampala. The DE was mined in Pakwach (formerly Nebbi) district in Northern Uganda. Chickens of the Lohmann Brown breed raised on deep litter were studied. At 7 weeks the birds were divided into 5 treatment groups, A, B, C, D and E each composed of 40 birds. Groups C, D and E were given an oral dose containing 250 embryonated eggs of A. galli while groups A and B were not infected. The chicks were weighed; and subjected to feeding trials as arranged below: A – Non-infected birds on DE (4%) supplemented diet; B –non-infected birds on neither piperazine (a conventional de-wormer) nor DE; C – infected birds on DE supplemented diet; D – infected birds on piperazine; and group E – infected birds on neither DE nor piperazine applied. Fecal samples were collected and analysed in the laboratory biweekly at week 16 till week 22 respectively for fecal egg counts. In a subsequent experiment, day-old layer chicks from Lohmann Brown strain but different from those used in earlier experiments, were used to assess the effect of DE on egg production. At 17 weeks of age the 420 were divided as follows: 6 treatment groups each having 7 replicates and each replicate having 10 birds. This study showed that DE can be used successfully in growing pullet diets to correct nutritional mineral imbalance since it supplies more than 14 trace elements and other elements. Diatomaceous earth also enables pullets to cope with Ascaridia galli load; and 2% DE supplementation did not have significant improvement on egg production as compared to no supplementation at all. However, reduction in egg production was experienced when supplementation with levels of DE higher that 2% was applied. Results from biweekly fecal analyses showed significant differences in fecal egg counts (p<0.05); and treatment by group (p<0.05).

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