scholarly journals Influence of dietary magnesium and selenium levels in finishing diets on growth performance and carcass meat quality of feedlot Pelibuey lambs

2013 ◽  
Vol 56 (1) ◽  
pp. 303-314 ◽  
Author(s):  
L. M. Hernandez-Calva ◽  
J. E. Ramirez-Bribiesca ◽  
I. Guerrero-Legarreta ◽  
L. Hernandez-Cruz ◽  
L. Avendaño-Reyes ◽  
...  
Keyword(s):  
Dry Matter ◽  
Average Daily Gain ◽  
Dry Matter Intake ◽  
Feed Conversion ◽  
Muscle Weight ◽  
Finishing Diets ◽  
Dietary Magnesium ◽  
Feedlot Lambs ◽  
Daily Gain

Abstract. The objective of this study was to evaluate the influence of supplemental dietary selenium (Se) and magnesium (Mg) on feedlot lambs. Sixty-four male lambs were randomly distributed to the following treatments: 1) low level of Mg and Se: diet with 0.18% of Mg and 0.1 μg Se/g, 2) with supplementation of magnesium oxide (MgO): diet with 0.32% of Mg and 0.1 μg Se/g, 3) with supplementation of Sodium selenite (Na2SeO3): diet with 0.3 μg Se/g and 0.18 % of Mg, 4) With supplementation of MgO and Na2SeO3: diet with 0.32% of Mg and 0.3 μg Se/g. There were no differences (P>0.05) in the average daily gain and feed conversion but Se supplement with Na2SeO3 (0.3 μg Se/g) enhanced dry matter intake, dressing percentage (P<0.05) and leg muscle weight (P<0.02). The average values of the water retained potential, coordinate L, a, and sensory analysis were different with Se (P<0.05). Magnesium suplemented as inorganic source (0.32% of Mg) enhanced (P<0.05) some characteristics in sensorial meat analysis.

PROGENY TEST OF FINNISH AND CANADIAN AYRSHIRE BULLS FOR VEAL AND BEEF PRODUCTION

1978 ◽  
Vol 58 (2) ◽  
pp. 115-122
Author(s):  
B. W. KENNEDY ◽  
G. M. JONES ◽  
R. L. CHICOINE ◽  
C. G. HICKMAN ◽  
E. B. BURNSIDE
Keyword(s):  
Dry Matter ◽  
Average Daily Gain ◽  
Progeny Test ◽  
Dry Matter Intake ◽  
Beef Production ◽  
Feed Conversion ◽  
Veal Calf ◽  
Unbiased Estimates ◽  
Best Linear Unbiased ◽  
Daily Gain

An experiment was conducted to obtain progeny test comparisons of Finnish and Canadian Ayrshire bulls for veal and beef production. A total of 83 male calves from four Canadian and four Finnish sires was tested. Best linear unbiased estimates of differences between veal calf progeny of Finnish and Canadian bulls for time on test, average daily gain and feed conversion were 4.00 ± 5.63 days, −.044 ±.038 kg/day and.062 ±.067 kg dry matter intake/kg gain, respectively. For veal carcass traits, progeny differences between Finnish and Canadian bulls for dressing percent and carcass grade, quality, finish and color scores (scores ranged from 1 to 3, except for color score which ranged from 1 to 2, with high score desirable) were.25 ± 1.13%, −.085 ±.232,.146 ±.303,.122 ±.302 and.104 ±.192, respectively. When raised for beef, differences between Finnish and Canadian sired steers were.015 ±.019 kg/day for feedlot average daily gain and.21 ±.66% for dressing percent. None of these differences were significant (P >.05). Based on these results, the importation of Finnish semen would not be expected to materially change the veal and beef performance of Ayrshires in Canada.

scholarly journals Effect of including canola meal in diets of slaughter ostriches (Struthio camelus var. domesticus)

2020 ◽  
Vol 50 (4) ◽  
pp. 537-551
Author(s):  
T.S. Brand ◽  
J. Van der Merwe ◽  
L.C. Hoffman
Keyword(s):  
Dry Matter ◽  
Average Daily Gain ◽  
Live Weight ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Dry Matter Intake ◽  
Canola Meal ◽  
Production Traits ◽  
Feed Conversion ◽  
Daily Gain

Canola meal (CM) is a locally produced protein source that may be less expensive than soybean meal (SBM). This study evaluated the effects of replacing 0%, 25%, 50%, 75%, and 100% SBM with CM in diets for slaughter ostriches. The CM was added at the expense of SBM and other concentrates, with minor changes in other ingredients. Birds (n = 15 per treatment) were reared from 77 to 337 days old on the trial diets, which were supplied ad libitum for starter, grower, and finisher phases. Bodyweights and feed intake were measured during these phases. No differences (P >0.05) were found between treatments for live weight at the end of each phase, dry matter intake (DMI), average daily gain (ADG) and feed conversion ratio (FCR) over all the growth phases. Although no differences were observed in live weight at the end of each phase, the birds reared on the diet with 50% CM were heaviest at slaughter, and birds reared with 100% CM were lightest (P <0.05). Differences (P <0.05) between diets were observed for the weight at slaughter, weights of the liver and thyroid glands and the pH of the cold carcass. However, no differences (P >0.05) were observed between diets for fat pad weight, dressing percentage, and weights of thighs and Muscularis gastrocnemius. The results indicate that CM could replace SBM in the diets of slaughter ostriches without affecting production traits and slaughter yields.Keywords: alternative protein, average daily gain, canola, dry matter intake, feed conversion ratio, growth, ostrich nutrition, production

MONENSIN, CHLORTETRACYCLINE AND TYLOSIN EFFECTS ON PERFORMANCE AND DIGESTION IN LAMBS FED A GROUND ALFALFA DIET

1989 ◽  
Vol 69 (2) ◽  
pp. 505-508 ◽  
Author(s):  
Z. MIR
Keyword(s):  
Key Words ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Control Diet ◽  
Average Daily Gain ◽  
Neutral Detergent Fiber ◽  
Dry Matter Intake ◽  
Acid Detergent Fiber ◽  
Finishing Diets ◽  
Daily Gain

Supplementing a control diet of ground alfalfa (CON) with monensin (MON), chlortetracycline (CTC) or tylosin (TYL) did not affect (P < 0.05) dry matter intake or average daily gain of market lambs. Feed efficiency with CTC was less than with the unsupplemented control (CON) (6.22 vs. 5.68) (P < 0.05). Mean digestibilities of dry matter, acid detergent fiber and neutral detergent fiber were lower (P < 0.05) with all antibiotic treatments than the CON diet. Relative to CON, nitrogen digestibility was increased with MON (66.3 vs. 70.9%) while that of energy was reduced with TYL (P < 0.05). Rumen ammonia and acetic, propionic and butyric acid concentrations were not influenced by any of the treatments. MON, CTC and TYL were not effective supplements for lambs fed alfalfa finishing diets. Key words: lamb, chlortetracycline, monensin, tylosin, alfalfa hay, digestibility

scholarly journals The Effect of Live Yeast Supplementation on Beef Cattle Performance: A Systematic Review and Meta-Analysis

2017 ◽  
Vol 9 (4) ◽  
pp. 21 ◽  
Author(s):  
Everton Dezordi Sartori ◽  
Maria Eugênia Andrighetto Canozzi ◽  
Daniele Zago ◽  
Ênio Rosa Prates ◽  
João Pedro Velho ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Dry Matter ◽  
Randomized Trials ◽  
Meta Analysis ◽  
Average Daily Gain ◽  
Dry Matter Intake ◽  
Inclusion Criteria ◽  
Feed Conversion ◽  
The Mean ◽  
Daily Gain

This meta-analysis evaluates the effects of yeast supplementation (Saccharomyces cerevisiae) on dry matter intake (DMI) and average daily gain (ADG) in beef cattle. The inclusion criteria were complete and randomized trials and supplementation with yeast S. cerevisiae versus no supplementation to measure DMI or ADG. Data were extracted from relevant papers via pre-defined protocols. A meta-analysis of random effects was conducted for each indicator separately including the mean of the control and treated groups. The results were presented with the pooled mean difference (MD), 95% of confidence interval, and I² (percentage of total variation between studies that is due to heterogeneity rather than chance). A total of 12 publications reporting 22 trials conducted in 1,161 cattle were analysed. The heterogeneity between studies was high and ranged from 92 to 99%. No effects were observed in ADG with the inclusion of yeast in the diet (MD = -2.849 g/day, p = 0.492). However, there was a reduction in the DMI (MD = -0.885 kg/day; p = 0.023) despite the high heterogeneity among studies (I2 = 92.4%; p < 0.001). The ADG increased when the forage level in the diet was between 30 and 50% (MD = 641.08 g/day; p = 0.001) and decreased when the level range from 51 to 75% (MD = -2.90 g/day; p < 0.001). In over 60% of the Neutral Detergent Fibre, the use of yeast in the diet decreased the ADG by 406.94 g/day (p = 0.034). Feedlot animals showed a reduction in the DMI (MD = -0.97 kg/day; p = 0.019) if supplemented with yeast. Supplementation with S. cerevisiae in the diet of beef cattle had no effect on ADG; however, it does improve the feed conversion due to the reduction in DMI.

THE EFFECTS OF SHEARING AND RALGRO IMPLANTS ON FEEDLOT PERFORMANCE OF LAMBS DURING THE SUMMER

1990 ◽  
Vol 70 (3) ◽  
pp. 743-750 ◽  
Author(s):  
S. F. LANE ◽  
R. A. KEMP
Keyword(s):  
Dry Matter ◽  
Growth Response ◽  
Average Daily Gain ◽  
Average Weight ◽  
Feeding Period ◽  
Feed Conversion ◽  
Initial Weight ◽  
Feedlot Performance ◽  
Feedlot Lambs ◽  
Daily Gain

To evaluate the effects of shearing and Ralgro® implants on the performance of fast-gaining feedlot lambs during the summer, 84 group-fed crossbred wether lambs (34.8 ± 1.8 kg) were shorn on day 0 of the feeding period (ES), shorn 3 wk later (LS), or left unshorn (NS), and either implanted with 12 mg Ralgro on day 0 (R) or not implanted (C). Lambs were blocked by initial weight. Heavy and light pens of lambs were shipped to market when the average weight within a pen was 52 kg after 40 and 55 d, respectively. Between days 0 and 40, mean average daily gain (ADG) of all lambs was 384 g and feed conversion was 4.38 kg dry matter kg−1 gain. During the first 40 d of the feeding period, shearing did not affect ADG (P > 0.05), but ES lambs had higher feed intake and poorer feed conversion than NS lambs (P < 0.05). Performance of the LS lambs was similar to the NS lambs prior to shearing, and similar to the ES lambs after shearing. A delay period between implantation and growth response was observed. Ralgro did not affect ADG between days 0 and 21 (P > 0.05) but improved ADG by 14.2% between days 21 and 40 (P < 0.01), giving an overall growth improvement of 6.5% between days 0 and 40 (P < 0.06). Ralgro had no effect on ADG after day 40. There were no interactions between the effects of shearing and Ralgro implantation on ADG (P > 0.05). Key words: Lambs, shearing, Ralgro, feedlot, summer

scholarly journals Flight Zone as an Alternative Temperament Assessment to Predict Animal Efficiency

Proceedings ◽  
2020 ◽  
Vol 36 (1) ◽  
pp. 207
Author(s):  
Mariano Parra ◽  
Tia Breed ◽  
Alana Connolly ◽  
Emily Janz ◽  
Sarah Kennedy ◽  
...  
Keyword(s):  
Dry Matter ◽  
Average Daily Gain ◽  
Pilot Trial ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Dry Matter Intake ◽  
Feed Conversion ◽  
Alternative Approach ◽  
Brahman Steers ◽  
Daily Gain

Animal temperament evaluation can be included in the cattle selection program also because of an existing correlation with performance. However, there are different assessment methods such as flight speed (time and speed that an animal takes to leave the crush) and exit score (indicating in which pace it does). Flight zone (FZ) refers to the distance that an animal allows human proximity without signs of fear (e.g., moving away and/or aggression) and it was used in this study as an alternative approach to measure temperament without putting cattle through the crush. Apparently, there is no study correlating FZ with performance. Therefore, a pilot trial was conducted to evaluate the correlation between average daily gain (ADG), dry matter intake (DMI) and feed conversion ratio (FCR) of ten Brahman steers. Steers were classified into temperament groups (Docile <2 m; Moderate between 2 to 2.9 m; and Lively ≥3 m). Even though no significant differences were found for ADG (P = 0.65), DMI (P = 0.36), and FCR (P = 0.46), the docile group gained 133 grams/day more than lively counterparts, most likely because of the extra 50 grams consumed. Furthermore, lively steers required an extra 1 kg of feed per kg of gain in comparison to docile animals, 8.24 vs. 7.28 kg FCR, respectively. These results are promising and indicate that FZ could be an efficient way to measure temperament in cattle. Thus, in order to confirm these findings, a new experiment with a more representative number of steers (n = 30) will be conducted.

Effect of ionophores monensin and lasalocid on performance and carcass characteristics of fattening Arabi lambs

2007 ◽  
Vol 2007 ◽  
pp. 139-139
Author(s):  
Najafgholi Dabiri ◽  
Khadigheh Heydari ◽  
Jamal Fayazi
Keyword(s):  
Dry Matter ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
Selective Inhibition ◽  
Dry Matter Intake ◽  
Limited Information ◽  
Feed Conversion ◽  
Ruminal Bacteria ◽  
Daily Gain ◽  
Stimulation Of

In some part of world for intensive production of fattening of lambs, they are fed with high amount of concentrate. However this pattern of feeding often affect negatively of rumen fermentation (Mould et al., 1983). Ionophores act by interrupting transmembrane movement and intracellular equilibrium of ions in certain classes of bacteria and protozoa that inhibit the gastrointestinal tract (McGuffey et al., 2001). In Ruminants, monensin has shown selective inhibition of ruminal bacteria, lactic and methane producers and stimulation of propionate production by 25% (Matabudul et al., 2001). In lambs, monensin improves weight gain and feed conversion ratio (FCR) and depressed the dry matter intake (DMI) (Martini et al., 1996), but lasalocid improve average daily gain (ADG) without depressed the DMI (Swanson et al., 2000). There is limited information about the effect of ionophores on performance of Iranian fattening lambs and particularly no works was done with Arabi lambs. Therefore, the present study was conducted to investigate the effects of feeding monensin and lasalocid on performance and carcass characteristics of fattening Arabi lambs.

scholarly journals Use of feed enzymes in feedlot finishing diets

1999 ◽  
Vol 79 (2) ◽  
pp. 243-246 ◽  
Author(s):  
K. A. Beauchemin ◽  
L. M. Rode ◽  
D. Karren
Keyword(s):  
Beef Cattle ◽  
Dry Matter ◽  
Average Daily Gain ◽  
Feedlot Cattle ◽  
Dry Matter Intake ◽  
Cattle Production ◽  
Finishing Diets ◽  
Feed Enzymes ◽  
Daily Gain ◽  
Matter Basis

An enzyme mixture with predominantly xylanase and cellulase activities was added to a high concentrate diet (92.2%, dry matter basis) and fed to growing heifers (370 kg) reared in a commercial feedlot. Enzyme supplementation had no effect on dry matter intake but increased (P < 0.01) average daily gain by 9% (1.40 to 1.53 kg d−1) and numerically improved feed-to-gain ratio by 10% (7.72 to 6.95 kg dry matter kg−1 gain). Feed enzyme technology can improve efficiency of commercial feedlot cattle production. Key words: Beef cattle, feedlot cattle, enzymes, barley

scholarly journals The effect of temulawak (Curcuma xanthorrhiza) flour addition in ration to male local lamb performance

2008 ◽  
Vol 6 (2) ◽  
pp. 31-35
Author(s):  
AWWALUL MUQORROBIN ◽  
Y.B.P. SUBAGYO ◽  
SUDIYONO SUDIYONO
Keyword(s):  
Protein Intake ◽  
Crude Protein ◽  
Dry Matter ◽  
Average Daily Gain ◽  
Variance Analysis ◽  
Dry Matter Intake ◽  
Feed Conversion ◽  
Feed Cost ◽  
Curcuma Xanthorrhiza ◽  
Daily Gain

Muqorrobin A, Subagyo YBP, Sudiyono. 2008. The effect of temulawak (Curcuma xanthorrhiza) flour addition in ration to male local lamb performance. Biofarmasi 6: 31-35. The aim of this research was to find out the effect of temulawak flour in ration to male local lamb performance. This research was conducted in Minifarm of Animal Husbandry Program of Agriculture Faculty of Sebelas Maret University located in Jatikuwung, Gondangrejo, Karanganyar on September 13th, 2007 until November 23rd, 2007. This research used 16 lambs with 12.07±1.11 kg of body weight. The design used was a Completely Randomized Design (CRD) with oneway classification divided into four treatments and each treatment (P0, P1, P2, P3) consisted of four replications and each replication used one male local lamb. The treatments were P0 = 60% grass field + 40% concentrate + 0% temulawak flour (as a control); P1 = control + 0.5% temulawak flour; P2 = control + 1% temulawak flour; and P3 = control + 1.5% temulawak flour. The parameters observed were dry matter intake (in BK), average daily gain (ADG), feed conversion, and feed cost per gain. The data were analyzed by variance analysis to feed consumption, crude protein intake, and feed conversion and covariance analysis for average daily gain. The results of variance analysis showed that the addition of temulawak flour until level of 1.5% in ration gave non-significant effect (P≥0.05) to feed intake, crude protein intake, and feed conversion. The covariance analysis for average daily gain (ADG) also showed the same result, nonsignificant effect. The average of the treatments of P0, P1, P2 and P3 were: (i) the dry matter intake were 649.98, 589.99, 596.75, and 594.33 grams/head/day; (ii) crude protein intake were 99.02, 95.61, 96.67, and 96.40 grams/head/day, (iii) average daily gain (ADG) were 82.59, 73.22, 81.70, and 86.61 grams/head/day, (iv) feed conversion were 8.11, 8.19, 7.39, and 7.40; and (v) feed cost per gain were Rp9,499.87, Rp10,072.35, Rp9,523.28, and Rp9,976.14, respectively. The conclusion of this research was the addition of temulawak flour until level of 1.5% from total ration did not need to be used in male local lamb livestock rations, because there was not an effect on the performance of male local lamb.

scholarly journals Effect of dietary salt levels on the performance of West African Dwarf (WAD) goats

2021 ◽  
Vol 29 (1) ◽  
pp. 47-54
Author(s):  
A. B. J. Aina
Keyword(s):  
Conversion Efficiency ◽  
Dry Matter ◽  
Average Daily Gain ◽  
West African ◽  
Dry Matter Intake ◽  
Common Salt ◽  
Feed Conversion ◽  
Salt Level ◽  
Cassava Peels ◽  
Daily Gain

A 70-day feeding trial was conducted to estimate the effect of levels (0, 5, 10, and 15g/kg cassava peels, respectively) of common salt and cassava peels (dry and fresh using Gmelina arborea leaves as a basal diet on the average daily gain, dry matter intake, seed conversion efficiency and water consumption in West African Dwarf goats. Total dry matter intake and the average Gmelina arborea leaf intake increased with applied common salt, irrespective of cassava peel form. Increasing common salt level also increased average daily gain and feed conversion efficiency in both dry and fresh cassava peels, but this was not accompanied by a remarkable gain beyond 5g common salt. Moreover, the average cassava peel intake increased but not significantly (P>0.05) with salt level up to 10g beyond which there was a sharp decline and an insignificant gain with dry and fresh cassava peels, respectively. Goats fed dry cassava peels  significantly (P<0.05) consumed more water as the salt level increased in the diet. It was concluded that application of 5g common salt per kg dry cassava peels promoted highest daily gain, optimum dry matter intake and feed conversion efficiency in West African Dwarf goal production. However, the response with fresh cassava peels revealed no statistically significant difference in average daily gain, total dry matter intake and feed conversion efficiency. 

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