Effect of different patterns of administration of recombinant porcine somatotropin on growth performance and economic returns of pigs in the starter grower vs. finisher phases of production

1991 ◽  
Vol 71 (2) ◽  
pp. 355-361 ◽  
Author(s):  
F. D. Evans ◽  
N. M. Evans ◽  
R. R. Hacker ◽  
V. R. Osborne ◽  
J. R. Morris
Keyword(s):  
Production Efficiency ◽  
Average Daily Gain ◽  
Temperate Climate ◽  
Economic Returns ◽  
Hog Production ◽  
Porcine Somatotropin ◽  
Marketing Systems ◽  
Carcass Merit ◽  
Feed Costs ◽  
Daily Gain

The effect of administration of porcine somatotropin (pST) on the production efficiency and economic returns of market hog production was determined based on temperate climate production and carcass merit marketing systems. No differences were detected in average daily gain (ADG), feed efficiency (FE) or carcass index for pigs receiving the same total dose (50 μg kg−1 d−1) of pST from 5 to 15 wk of age (9–50 kg) in any of three administration patterns (pST once per day, n = 12; pST once per day for 7 d and no injection for the next 7 d repeated, n = 11; pST once every 3 d, n = 11). However, when pST was administered from 15 wk of age through market weight (50–96 kg, n = 18), ADG increased 15.4% (P < 0.01), FE increased 30.0% (P < 0.01), backfat was reduced by 28.2% (P < 0.01) and grading index increased by 2.9 points (P < 0.01) compared to control animals (n = 24). Economic analysis indicated that breakeven costs for administration of pST for responses obtained varied from $13.68–$21.96 CDN, depending on the value of the carcass ($1.20–$2.10 CDN kg−1) and feed costs (S160.00–$240.00 CDN t−1). These results indicate that application of pST to pigs in the finisher phase of growth would result in improved production efficiency and significant economic return under present hog marketing conditions in Canada where carcass merit settlement is used without an increase in carcass weight. Key words: Porcine, somatotropin, growth, economic returns, production

scholarly journals The Impact of Selection using Residual Average Daily Gain and Marbling EPDs on Growth Performance and Carcass Traits in Angus Steers

2019 ◽  
Vol 3 (2) ◽  
Author(s):  
T. R. Krause ◽  
E. R. Moore ◽  
J. Duggin ◽  
J. R. Segers ◽  
T. D. Pringle
Keyword(s):  
Growth Performance ◽  
Feed Efficiency ◽  
Average Daily Gain ◽  
Backfat Thickness ◽  
Feeding Trial ◽  
Body Weights ◽  
Selection For ◽  
Carcass Merit ◽  
The Impact ◽  
Daily Gain

ObjectivesProfitability in the beef industry has narrow margins regulated by revenue from output traits like growth and carcass merit, but profitability is also largely impacted by input expenses like feed costs. Selecting for improvements in feed efficiency during the finishing phase, one of the most feed intensive segments of the industry, can help to mitigate those input costs. This study compared growth performance, feed efficiency, body composition, and carcass characteristics in Angus steers (n = 321) from bulls divergently selected for feed efficiency and marbling.Materials and MethodsAngus sires were selected based on high (10th percentile or better) and low (85th percentile or worse) residual average daily gain (RADG) EPD as well as high (fifth percentile or better) and average (near 50th percentile) marbling (MARB) EPD. These criteria resulted in a 2 × 2 factorial design with four breeding lines: high RADG/high MARB, high RADG/average MARB, low RADG/high MARB, low RADG/average MARB. Data were analyzed using MIXED procedures of SAS with RADG and MARB as main effects. Significance was set at α = 0.05. Generation was also analyzed, where generation one (GEN1) steers were from a selected sire while generation two (GEN2) steers were from a selected sire and a selected dam.ResultsUltrasound and carcass data revealed no differences (P ≥ 0.12) in 12th rib backfat thickness from weaning through slaughter for the RADG EPD groups. Yield grade and dressing percent did not differ (P ≥ 0.56) across RADG or MARB groups. At the beginning and end of the feeding trial, the high RADG (P ≤ 0.02) group had larger ultrasound ribeye area (REA) than the low RADG group. Carcass REA tended (P = 0.08) to be larger in the high versus low RADG steers. During the feedlot trial and through slaughter, body weight was heavier (P ≤ 0.006) for the high versus low RADG steers but did not differ (P ≥ 0.44) across MARB EPD. Feed efficiency measures did not differ (P ≥ 0.32) across RADG or MARB groups apart from the tendency (P = 0.08) for residual feed intake to be lower in the high versus low RADG steers. Marbling scores differed (P ≤ 0.04) across RADG and MARB groups with the low RADG steers and the high MARB steers having improved marbling. The quality grade distribution across MARB EPD revealed that the average MARB steers graded 73% Choice and 25% Prime while the high MARB steers graded 56% and 42%, respectively. Slice shear force did not differ (P ≥ 0.32) across RADG or MARB EPD. Body weights tended (P = 0.06) to be heavier at the start of the feeding trial for GEN1 versus GEN2 steers. Total gain, average daily gain, and feed to gain (F:G) differed by generation (P ≤ 0.007) with increased rates of gain and reduced F:G in the GEN2 versus GEN1 steers. Body weights did not differ (P = 0.72) across GEN at the end of the feeding trial. Backfat thickness at the start and end of the feedlot phase was less (P ≤ 0.03) and marbling score was improved (P = 0.02) in the GEN2 versus GEN1 steers, respectively.ConclusionThese results suggest that selection using RADG EPD has negligible impacts on meat quality; and that progress in selection for efficiency can be achieved while advancing carcass quality and value. Furthermore, continued divergent selection for feed efficiency and marbling has the potential to improve feed efficiency through advancements in the rate of gain, while enhancing carcass merit through marbling.

scholarly journals Ranking of Four Types Fodder as Sole Diet Considering Biological Characteristics and Growth of Local Growing Bulls

2019 ◽  
pp. 1-9
Author(s):  
Khan Shahidul Huque ◽  
Biplob Kumer Roy ◽  
Nazmul Huda
Keyword(s):  
Cost Efficiency ◽  
Production Efficiency ◽  
Block Design ◽  
Average Daily Gain ◽  
Biological Characteristics ◽  
Feed Conversion ◽  
Arithmetic Average ◽  
Randomized Block Design ◽  
Growth Performances ◽  
Daily Gain

Aims: In this experiment, evaluation of intake, digestibility and growth performances of local growing bulls by feeding Jumbo-green, Para and German grass based on Index (Mf) of Maize are considered and ranked this fodder accordingly. Study Design:  Completely randomized block design. Place and Duration of Study: Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka, between July 2016 and September 2016. Methodology: Biomass production efficiency (Xddm), animal production efficiency (Xap), CH4 emission deduction efficiency (XCH4) and benefit to cost efficiency (Xbc) was considered to identify the biological characteristics of four fodders. Statistical analysis was done through SPSS-17 to evaluate the intake, digestibility and growth of animal. Rank of each fodder was calculated through the equation of Maize index (Mi) = (Xddm + Xap + XCH4 + Xbc)/4. Results: Aggregation of four arithmetic average efficiency; Jumbo-green, Para and German got 0.42, 0.40 and 0.72 point out of 1.0 point of Mi, respectively. Among four fodders German grass performed best in terms of average daily gain (107 gm/d) and feed conversion ratio (46.9) compared to maize silage (64 gm/d & 58.4, respectively). Weight loss of bulls fed Jumbo and Para has occurred unexpectedly. Conclusion: In combination of mathematical calculation and statistical evaluation, the rank of four fodders measured as Maize>German>Jumbo-green>Para.

scholarly journals EFISIENSI PRODUKSI SAPI POTONG PADA PETERNAKAN RAKYAT PADA MUSIM KEMARAU DI DAERAH PERTANIAN LAHAN KERING KABUPATEN GUNUNGKIDUL

2018 ◽  
Vol 32 (1) ◽  
pp. 49 ◽  
Author(s):  
Eka Handayanta ◽  
Lutojo Lutojo ◽  
Kurniasih Nurdiati
Keyword(s):  
Beef Cattle ◽  
Feed Intake ◽  
Feed Efficiency ◽  
Production Efficiency ◽  
Average Daily Gain ◽  
Dry Season ◽  
Efficient Production ◽  
Smallholder Farmer ◽  
Feed Cost ◽  
Daily Gain

<p><em>This research was conducted to know the production efficiency of beef cattle in smallholder farmer in a dry farming area at dry season. Research has been started on June and finished on September (dry season) at smallholder farmer in the village Kemejing, Semin subdistrict, district Gunungkidul, DIY. The research materials are 28 heads of beef cattle from 17 farmers, which consist of 10 heads of PO breed, 10 heads of a Simpo breed, and 8 heads of Limpo breed with 292.25 kg of initial body weight. This research was using Participatory Rural Appraisal method which is a collecting data process that an active teamwork between data collector and farmer. Collected parameter are feed intake, average daily gain (ADG), feed efficiency, feed cost per gain (FC/G), and income over feed cost (IOFC). Data resulting from this research are 8.42 kg/head/day of feed intake, 0.19 kg/head/day of ADG, 0.021 of feed efficiency, Rp 46.166,62 of feed cost per gain, and Rp 3.985,55 of income over feed cost. It can be concluded that the efficient production of beef cattle in smallholder farmer at the dry area is low because average daily gain, feed cost per gain and income over feed cost produced are extremely small so if the calculated economic result is less favorable.</em></p>

A GnRF vaccine (Improvac®) and porcine somatotropin (Reporcin®) have synergistic effects upon growth performance in both boars and gilts

2003 ◽  
Vol 54 (1) ◽  
pp. 11 ◽  
Author(s):  
I. McCauley ◽  
M. Watt ◽  
D. Suster ◽  
D. J. Kerton ◽  
W. T. Oliver ◽  
...  
Keyword(s):  
Feed Intake ◽  
Average Daily Gain ◽  
Subcutaneous Fat ◽  
Boar Taint ◽  
Feed Consumption ◽  
Daily Injection ◽  
Feed Conversion ◽  
Entire Study ◽  
Porcine Somatotropin ◽  
Daily Gain

The use of a vaccine (Improvac) directed against gonadotrophin-releasing factor (GnRF), to prevent boar taint in male pigs, is also associated with an increase in feed consumption, growth, and higher deposition of subcutaneous fat. Daily administration of porcine somatotropin (pST) consistently increases average daily gain, and feed conversion efficiency, and reduces subcutaneous fat, particularly in gilts. The objective of this study was to examine the effect of combining these treatments in boars and gilts. Forty-eight pigs (Large White × Landrace), housed individually, were used in a 2 × 2 × 2 factorial experiment with the respective factors being vaccination with GnRF vaccine (at 14 and 18 weeks of age), daily injection with pST (from 18 weeks to slaughter at 22 weeks), and sex (boars and gilts). Performance was measured over the period of pST administration. Over the entire 28 days of the study, daily gain was lower for gilts than for boars (1216 v. 1410 g/day, P < 0.001), was increased by pST (1219 v. 1407 g/day, P < 0.001), but not significantly altered by vaccination against GnRF (1284 v. 1342 g/day, P = 0.15). However, GnRF vaccination increased daily gain in the second 2 weeks of the study, and overall, there were interactions such that the vaccine increased gain in all groups except boars not receiving pST. Feed intake over the study period was less for gilts than for boars (3139 v. 3407 g/day, P < 0.001), was decreased by pST (3537 v. 3009 g/day, P < 0.001), and increased by vaccination against GnRF (3139 v. 3407 g/day, P < 0.001). When averaged over the entire study, feed conversion ratio (FCR) was higher for gilts than for boars (2.76 v. 2.51, P = 0.013), was decreased by pST (3.05 v. 2.22, P < 0.001), but unchanged by vaccination against GnRF (2.62 v. 2.65, P = 0.70). Fat deposition was lower in gilts than in boars (335 v. 378 g/day, P = 0.037), was decreased by pST treatment ((442 v. 271 g/day, P < 0.001), and increased by vaccination against GnRF (333 v. 379 g/day, P = 0.026). In boars, fat androstenone was reduced by vaccination against GnRF (0.10 v. 2.47 μg/g, P < 0.001) and tended to be reduced by pST (1.71 v. 2.44, P = 0.10), but only vaccination against GnRF reduced skatole (0.174 v. 0.050 μg/g, P < 0.001). The combination of the treatments in all cases was at least additive, and in some cases synergistic. The concomitant vaccination against GnRF and treatment with pST affords an opportunity to increase growth rate and feed intake above control levels and above those of pigs treated with either treatment alone.

EFFECTS OF SEVERE WINTER CONDITIONS ON PERFORMANCE OF FEEDLOT STEERS

1974 ◽  
Vol 54 (4) ◽  
pp. 605-610 ◽  
Author(s):  
J. D. MILLIGAN ◽  
G. I. CHRISTISON
Keyword(s):  
Energy Intake ◽  
Production Efficiency ◽  
Climatic Factors ◽  
Average Daily Gain ◽  
Climatic Conditions ◽  
Feedlot Cattle ◽  
Metabolizable Energy ◽  
Ambient Temperatures ◽  
Annual Range ◽  
Daily Gain

An analysis of 7 yr of monthly records on a total of 1,970 steers from the University of Saskatchewan feedlot at Saskatoon was conducted to determine the effects of climate on steer performance. During the months of December, January and February (mean monthly temperature −17 C), average daily gain fell to 70% of the average recorded over the remainder of the year. Production efficiency was also severely affected. The feed required per unit of gain and the metabolizable energy intake per unit of gain during winter were, respectively, 149 and 140% of the mean requirements from March to November. These effects were not caused by differences in weight, maturity or energy intake of the steers. Animal performance appeared to be related to climatic factors over the entire annual range. Average daily gain and feed per unit gain were significantly correlated with mean ambient temperatures (r = 0.74 and −0.85, respectively), days below −23 C (r = −0.74 and 0.86), windchill (r = −0.73 and 0.82) and dewpoint (r = 0.74 and −0.83). Voluntary feed intake was markedly lower in winter than during the onset of colder weather in the fall. Cattle fed in the 90 coldest days required an extra 220 kg feed to reach market weight. Winter climatic conditions, therefore, have a marked adverse effect on full-fed feedlot cattle in Western Canada, even when the animals are well bedded and sheltered from wind.

scholarly journals THE EFFECT OF FEEDING PALM KERNEL MEAL ON PERFORMANCE AND CARCASS CHARACTERISTICS OF PIGS

2021 ◽  
Vol 21 ◽  
pp. 88-95
Author(s):  
A. O. Aduku ◽  
J. O. Jegede ◽  
T. S. B. Tegbe ◽  
S. A. S. Olorunju
Keyword(s):  
Average Daily Gain ◽  
Palm Kernel ◽  
Dietary Treatment ◽  
Initial Weight ◽  
Large White ◽  
Kernel Meal ◽  
Quadratic Response ◽  
Palm Kernel Meal ◽  
Feed Costs ◽  
Daily Gain

Thirty two (32) crossbred (Large white llampshire) boars and gilts of average initial weight of 41.55 kg were fed diets containing graded levels of palm kernel mcal (PKM). Pigs were randomly assigned to pens based on initial weight and sex and there were 2 pigs per pen. Palm kernel meal was fed at (a), (b) 21). 55 (c) (d) 61,65% of the diet to replace maize offal and full-fat soya-bean in the 16% crude protein diet for treatments 1 to 4. At the end of the 64-day trial, sixteen pigs (8 boars and 8 gilts) were used for carcass evaluation. Final weight of pigs decreased linearly (P<0.05) as the level of PKM increased in the diet. A quadratic response (P<0.05) was obtained for total gain and average daily gain, Average daily feed intake was not significantly allected by level of PKM fed but feed: gain increased linearly (P<0.05) as the level of PKM increased in the diet. Feed cost per kilogramme gain decreased significantly (P<0.05) as level of PKM increased but feed costs for the control and 20.55% PKM diets were similar. The feeding of PKM had no significant effect on dressing %, percentages of lam, shoulder, loin, belly, loin-eye area and backfat thickness. Organ weights (empty stomach, lungs, heart, kidneys and spleen) were not affected by dietary treatment. However, Weight of the liver increased linearly (P<0.05) as level of PKM inclusion increased in the diet. Boars had better gain (P<0.05) and better feed: gain ratio (P<0.01) compared to gilts.

scholarly journals Evaluation of soy hulls as the principal ingredient in a beef cattle receiving ration

2005 ◽  
Author(s):  
◽  
Kija Faustin Bunyecha
Keyword(s):  
Beef Cattle ◽  
Average Daily Gain ◽  
Beef Steers ◽  
Soy Hulls ◽  
Potential Alternative ◽  
Net Benefits ◽  
Feed Costs ◽  
Alternative Choice ◽  
Production Problems ◽  
Daily Gain

Adjusting cattle to grain based diets from predominately forage diets remains one of the production problems facing beef cattle producers. When cattle are introduced to grain based diets they have a tendency to experience health problems such as acidosis, founder, and bloat. This study used statistical and economic analysis methods to evaluate soy hulls (SH) as the principal ingredient in a beef cattle receiving ration. Results showed that weight and average daily gain of beef steers fed 0 % SH and 25 % SH were statistically similar. Animals fed 0 % SH yielded slightly higher net benefits due to lower cost of purchasing the animals. Feed costs for animals fed 0 % SH were slightly higher than those fed 25 % SH. Net benefits per pound of gain showed 25 % SH as the most economic ration. Rations containing 50 % SH or 75 % SH performed poorly.This study has demonstrated that a ration containing 25 % SH is a potential alternative choice in the formulation of beef cattle receiving rations. Although its effect in the feedlot phase is unknown, the implications of the study includes: First, as soy hulls become part of an array of ingredients, producers will have greater flexibility of choosing ingredients for formulating receiving rations. Second, as farmers become responsive with the use of soy hulls, its demand may increase and this could also increase its price. Thus, soy hulls could become a driver of farm-gate soybean prices received by farmers.

scholarly journals Efficiency of using high-protein soybean meal in feeding broilers of cross-breed ROSS-PM3

2020 ◽  
Vol 27 ◽  
pp. 00102
Author(s):  
Vladimir Galkin ◽  
Natalya Vorobyova ◽  
Valentina Chichaeva
Keyword(s):  
Weight Gain ◽  
Soybean Meal ◽  
Crude Protein ◽  
Average Daily Gain ◽  
Protein Solubility ◽  
Live Weight ◽  
High Protein ◽  
Control Group ◽  
Feed Costs ◽  
Daily Gain

The use of high-protein soybean meal in broiler diets provided for 38 days of fattening obtaining live weight of 2,336 g, average daily gain in live weight of 60.4 g, which is higher than in the control group by 135 g and 3.5 g, respectively. The highest rates were observed in chickens that consumed compound feed with high protein soybean meal, which was characterized by a high content of crude protein (47.0%) and good protein solubility (77.8%). It is proved that the use of soybean meal with a high content of SP 47.0% versus 42.0%, increases the live weight of chickens and reduces feed costs per 1 kilo of live weight gain.

Brahman cattle in a temperate environment:I. Live-weight gains and carcass characteristics

1970 ◽  
Vol 74 (2) ◽  
pp. 315-321 ◽  
Author(s):  
J. B. Moran
Keyword(s):  
Weight Distribution ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Productive Efficiency ◽  
Temperate Climate ◽  
Body Conformation ◽  
Brahman Cattle ◽  
Weight Gains ◽  
Daily Gain

SUMMARYA study was made of the live-weight gains of four ¾-bred Brahman and four purebred Hereford steers over a 12-month period. At 950 lb live weight each animal was slaughtered, after which the carcass characteristics of the two breed types were compared.The Herefords showed the highest live-weight gains over the whole year but during autumn, when nutritional levels were poor, the Brahmans had an advantage in average daily gain.Although both breed types varied greatly in body conformation, there was little appreciable difference in weight distribution of joints on the carcass. A higher dressing percentage was observed in the Brahmans, this being attributed to their smaller alimentary tracts. The Brahmans had a greater carcass muscle and smaller carcass fat content than the Herefords. The necessity for fat trimming of the Hereford carcasses reduced their calculated retail value index to a level below that of the Brahmans in a market which discriminated against excess fat.Thus it was concluded that even in a temperate climate, Brahman cattle can have a place in improving productive efficiency. Apart from the heterosis developed in crossbreeding, benefits should flow from the Brahmans superiority on poor pastures and the improved production of lean meat on their carcasses.

scholarly journals The use of granules of food protein concentrated non hydrolyzed at growing piglets

2019 ◽  
pp. 54-57
Author(s):  
M. M. Lugovoi ◽  
E. A. Kapitonova ◽  
N. V. Habibulina
Keyword(s):  
Average Daily Gain ◽  
Food Protein ◽  
New Type ◽  
Digestible Protein ◽  
Protein Granules ◽  
Feed Costs ◽  
Feed Protein ◽  
Productivity Dynamics ◽  
Mixed Feeds ◽  
Daily Gain

This article presents a study of the effectiveness of concentrated non-hydrolyzed feed protein granules (CNHPG) on the productivity dynamics and the quality final prod-ucts when included in the diets of suckling pigs and weaned piglets. Concentrated non-hydrolyzed feed protein granules represent a new type of soy protein concentrate free from antibiotics, hormonal remedies and GMOs. This feed supplement can be included either individually to the basic ration or into the composition of mixed feeds as the main highly digestible protein source with the original amino acid composition. The results of the research showed that CNHPG contribute to an increase in piglets average daily gain of 2.0-2.7%, reduce feed costs for obtaining a unit of production by 0.1-0.3 kg, as well as an additional gross gain in body weight from 8.2% to 14.6%

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