EFFECT OF PORCINE GROWTH HORMONE-RELEASING FACTOR (1-29)NH2 AND THYROTROPIN-RELEASING FACTOR ON PIG GROWTH PERFORMANCE

1990 ◽  
Vol 70 (2) ◽  
pp. 459-467 ◽  
Author(s):  
P. DUBREUIL ◽  
J. MORISSET ◽  
Y. COUTURE ◽  
G. PELLETIER ◽  
D. PETITCLERC ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Growth Performance ◽  
Lumbar Vertebra ◽  
Carcass Characteristics ◽  
Daily Weight Gain ◽  
Feed Consumption ◽  
Lung Weight ◽  
Growth Hormone Releasing Factor ◽  
Treatment Groups ◽  
Key Words Growth Hormone

Sixty female pigs were divided into four treatment groups to evaluate the effect of chronic treatment with porcine growth hormone-releasing factor (pGRF), thyrotropin-releasing factor (TRF) and their combination on growth performance of Yorkshire-Landrace pigs. Animals were injected with either saline, pGRF(1-29)NH2 at 15 μg kg−1 BW, TRF at 6 μg kg−1 BW, or pGRF plus TRF at doses previously mentioned, according to a 2 × 2 factorial design, using three pens of five pigs per treatment. Subcutaneous injections were made twice daily from 19.4 ± 0.8 to 95.2 ± 0.5 kg BW. Treatments did not affect (P > 0.05) average daily weight gain, feed consumption, feed efficiency or age at slaughter. TRF had no effect (P > 0.05) on carcass and blood variables except for reducing lung weight (P < 0.05) and increasing blood-urea nitrogen after 4 wk of treatment. GRF reduced (P < 0.01) backfat thickness at the level of the first thoracic rib, 13th thoracic rib, last lumbar vertebra and at 6.5 cm from the dorsal mid-line at the level of the 13th rib. Furthermore, pGRF increased carcass length, loin eye area at the 13th rib, lung weight and kidney weight. Blood glucose and free fatty acid concentrations were not affected (P > 0.05) by treatments. No significant pGRF × TRF interaction was observed for any measured variables. At the doses injected, TRF and pGRF did not modify growth variables, while pGRF positively affected carcass characteristics by reducing lipid content and increasing carcass length as well as loin eye area. Key words: Growth hormone-releasing factor, thyrotropin-releasing factor, pig, growth performance, carcass characteristics

scholarly journals Effect of light emitting diodes with different color temperatures on immune responses and growth performance of male broiler

2017 ◽  
Vol 17 (2) ◽  
pp. 545-553 ◽  
Author(s):  
Hossein Sharideh ◽  
Mojtaba Zaghari
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
White Light ◽  
Light Emitting Diodes ◽  
Feed Consumption ◽  
Light Emitting ◽  
Treatment Groups ◽  
Warm White Light ◽  
Antibody Titers ◽  
Different Color

Abstract The aim of the present study was to evaluate the effects of the different color temperatures (Kelvin; K) of the light emitting diodes (LEDs) on broiler chicken health and growth performance compared to incandescent (ICD) light bulbs. Three hundred and sixty one-day-old Ross 308 male chicks were tested for 42 days. The chicks were randomly distributed into three treatment groups [neutral-white (4,286 K), warm-white (2,990 K), and ICD (2,790 K) light bulbs] of 120 chicks/treatment with six replicates each by adopting complete randomized design. The diets were similar for all treatment groups. The live body weight and feed intake were recorded weekly and feed conversion ratio (FCR) was calculated (weekly and whole period). Indices of humoral immunity [antisheep red blood cell (SRBC) titer, IgG, and IgM at 26 and 34 days of age], Newcastle disease (ND) virus and avian influenza (AI) virus antibody at 40 days of age, cell-mediated immunity [cutaneous basophilic hyper-sensitivity (CBH) response at 41 days of age)] as well as total and differential leukocyte numbers at 42 days of age) were measured. Effects of different color temperatures of the LEDs and ICD light bulbs on body weight, feed consumption, and FCR were not statistically significant (P>0.05). Also, the effect of color temperatures of light on secondary titers of SRBC, AI antibody response, CBH response, the total number of leukocytes and percentage of lymphocytes were not significant. However, the different color temperatures of LEDs have a significant effect on primary SRBC and ND antibody titers (P≤0.05). The highest primary SRBC (P≤0.05) and ND (P≤0.05) antibody titers were observed in warm-white light. It was concluded that based on the 3 color temperatures examined, it seems that the most suitable to provide the optimum level of immunity and energy-saving in commercial broiler houses is warm-white light.

Growth performance and carcass composition of lambs infused for 28 days with a growth hormone-releasing factor analogue.

1990 ◽  
Vol 68 (11) ◽  
pp. 3624 ◽  
Author(s):  
J A Godfredson ◽  
J E Wheaton ◽  
B A Crooker ◽  
E A Wong ◽  
R M Campbell ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Growth Performance ◽  
Carcass Composition ◽  
Growth Hormone Releasing Factor

Effect of long-term administration of human growth hormone-releasing factor and(or) thyrotropin-releasing factor on milk production, insulin-like growth factor-I and plasma constituents in dairy cows

1991 ◽  
Vol 71 (3) ◽  
pp. 707-715
Author(s):  
P. Lacasse ◽  
J. Morisset ◽  
D. Petitclerc ◽  
G. Pelletier ◽  
Y. Couture ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Dairy Cows ◽  
Milk Production ◽  
Feed Efficiency ◽  
Human Growth ◽  
Daily Weight Gain ◽  
Average Daily Weight Gain ◽  
Growth Hormone Releasing Factor ◽  
Injection Period ◽  
Factor I

Forty-seven Holstein cows (51 ± 7 d of lactation; 607 ± 78 kg BW) were randomly subjected to a 2 × 2 factorial arrangement based on milk production. Milk production and feed intake were recorded every day and milk and feed composition determined once a week for 33 wk (4 wk preinjection, 26 wk of injection and 3 wk postinjection). During the injection period, cows received daily s.c. injections (10:00 h) in the cervical area of saline (control), human growth hormone-releasing factor (1–29)NH2 (GRF; 10 μg kg−1 BW), thyrotropin-releasing factor (TRF; 1 μg kg−1 BW) or the combination of both releasing factors (10 and 1 μg kg−1 BW, respectively). Growth hormone-releasing factor enhanced milk production (P < 0.001; 22.1 vs. 24.2 kg 4% FCM per d), feed intake (P < 0.05; 19.0 vs. 19.8 kg DM per d), feed efficiency (P < 0.05; 1.14 vs. 1.21 kg 4% FCM per kg DM) and insulin-like growth factor-I concentrations (P < 0.05) but did not affect milk composition (P > 0.25) or average daily weight gain (P > 0.25). Thyrotropin-releasing factor did not affect nor did it interact with GRF on any of these variables except for average daily weight gain which was reduced by TRF (P < 0.05; 0.24 vs. 0.12 kg d−1) during the injection period. Milk production of GRF-treated cows returned to control levels after 3 wk following cessation of treatment. GRF treatment depressed (P < 0.05) serum urea, creatinine, triglycerides and glutamate pyruvate transaminase concentrations, while TRF treatment increased glucose levels (P < 0.05). In conclusion, daily s.c. injections of GRF for 6 months stimulated milk production by 9.5% and improved feed efficiency by 6.1% in dairy cows. Key words: GRF, TRF, milk production, plasma constituents, IGF-I

scholarly journals Effects of Least Cost Homemade Ration on Growth Performance of Sasso and Indigenous Breeds of Chicks

2021 ◽  
Author(s):  
Lemma Gulilat ◽  
Firew Tegegne ◽  
Solomon Demeke
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Growth Performance ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Daily Weight Gain ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Final Body Weight ◽  
Commercial Diet

The objective of this study was to develop the least-cost starter&rsquo;s diet and evaluated its effect on the growth performance of Sasso breeds and Indigenous ecotype of chicks under the local condition of the South Gondar Zone. The effects of substitution of different levels of commercial starters ration with homemade diet on the growth performance of Sasso and Indigenous chicks were studied in Hiruy Abaregay village of Farta district. The research area is 586km distant from the capital city of Addis Ababa, Ethiopia. A total of 510 Sasso T-44 and 90 Indigenous local ecotypes day-old chicks were randomly divided into five groups, each with 102 and 18 chicks, respectively. These were assigned into five treatments in which 100 (T1), 75 (T2), 50 (T3), 25 (T4), and 0% (T5) of commercial starter&rsquo;s diet in factorial completely randomized design (CRD) with 3 replications for 60 days feeding period. The results obtained indicated that increased levels of substitution of a commercial diet with a homemade diet significantly depressed (p&lt;0.001) mean daily feed consumption and retention of dry matter, nitrogen, and metabolizable energy. Growth rate as measured by mean daily weight gain, mean final body weight, and total feed consumption and feed cost were significantly miserable (p&lt;0.001) in an increased homemade diet. On the contrary, there was an increase in feed conversion ratio and fiber content in high-level dilution of starter&rsquo;s commercial diet with a homemade diet. However, the groups of chicks on 0, 25, and 50% commercial starters diets replaced by homemade diet were significantly higher (p&lt;0.001) in mean daily feed intake, daily weight gain, feed conversion ratio, and final body weight attained. The results of this study indicated that up to 50% of expensive commercial starter&rsquo;s diet could economically be replaced with the least cost homemade diet without adversely affecting the growth performance of chicks.

scholarly journals Effect of dietary copper and probiotic supplementation on growth performance and carcass characteristics of broiler chickens

2020 ◽  
Vol 44 (1) ◽  
pp. 245-253
Author(s):  
M. A. Oguntoye ◽  
O. M. O. Idowu
Keyword(s):  
Growth Performance ◽  
Feed Intake ◽  
Broiler Chickens ◽  
Carcass Characteristics ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Daily Weight Gain ◽  
Feed Conversion ◽  
Probiotic Supplementation ◽  
Dietary Copper

This study was conducted to investigate the effect of dietary copper and probiotic supplementation on growth performance and carcass characteristics of broiler Chickens. A total of 180-day old marshal broiler chicks of mixed sex were randomly allotted to six treatment groups of 30 birds each. The Treatments were divided into three replicates of ten birds each; starter and finisher diets were formulated and fed for a period of fifty-six days. The dietary treatments were subjected to completely randomized design experimental layout which was made up of probiotic (0 and 500ppm) and copper (0, 125 and 250mg).The chicks were fed the broiler starter diet for the first 28 days and broiler finisher for the last 28 days. Treatment effect on broiler body weight, feed intake and feed conversion ratio were determined on a weekly basis. Data obtained were analyzed using analysis of variance (ANOVA) and, Duncan's Multiple Range Test was used to separate significant means. Dietary supplementation of copper and probiotic had no significant (P> 0.05) effect on final weight (FW), daily weight gain (DWG), feed intake (FI), and feed conversion ratio (FCR) at the starter phase of the experiment. However, at finisher phase, inclusion of probiotic resulted in higher significant (P < 0.05) values for FW (2214.12g/b) DWG (60.22g/b/d), FI (159.02g/b/d), and FCR (2.64). The carcass yields of the broilers were significantly (P< 0.05) influenced by copper and probiotic supplementations. However, lower value (1.07%) was obtained for abdominal fat in broilers fed 250mg Cu/kg supplemented diet. The study concluded that supplementation of copper and probiotics resulted in improved growth performance and carcass yield of broiler chickens.

scholarly journals Comparative Assessment of Growth Performance and Nutrients Utilization of African Catfish (Clarias gariepinus, Burchell 1882) Fed Chicken Offal and Shrimp-Based Diets

2019 ◽  
pp. 1-11
Author(s):  
Elvis Monfung Ayim ◽  
Ettah Akpang Ivon ◽  
Raymond Odey Ajang ◽  
Akaninyene Paul Joseph
Keyword(s):  
Growth Rate ◽  
Growth Performance ◽  
Juvenile Fish ◽  
Clarias Gariepinus ◽  
Feed Consumption ◽  
African Catfish ◽  
Fish Feed ◽  
Feed Conversion ◽  
Treatment Groups ◽  
Fish Group

A comparative study on the growth performance of African catfish (Clarias gariepinus) fed shrimp based diet (SBD), chicken offal based diet (COBD) and coppens feed was carried-out for 22 weeks in concrete tanks measuring 3.5 x 1.7 x 1.5 m3. Triplicate groups of 40 juveniles with average length of 9.15 ± 0.17cm and weight of 20.00 ± 2.58g were stored in each tank. A total of 360 juveniles were used throughout the study. Fish were fed daily at 3% of their body weight through-out the duration of the experiment. The nutrient composition of the 3 nutrients differed significantly at p<0.05. Weight gain (WG) (g) was highest (17189.33 ± 506.61g) in fish fed diet A (Coppens feed), followed by 15045.33±202.42 g (diet B) (SBD) and least (14357.33 ± 108.25 g) (diet C) (COBD). The Growth rate (GR) was highest in fish fed with diet A (111.62 ± 3.29 g/day), followed by 97.69±1.31 g/day (diet B), and least (93.23±0.70 g/day) in diet C. Specific growth rate (SGR) was highest in juveniles fed diet A (2.02 ± 0.02 %/day), followed by 1.94±0.01 %/day for diet B, and least (1.91±0.01 %/day) for diet C. Mean growth rate (MGR) was highest in juveniles fed diet A (11.88 ± 0.29 mg/day), followed by 11.74±0.15 mg/day for diet B, and least (11.69±0.09 mg/day) in fish fed diet C. The WG, GR and SGR varied significantly between the juvenile fish group fed the 3 diets at p<0.05, while MGR did not vary significantly between fish group fed the 3 diets at p>0.05. Fish fed diet A had a higher feed consumption (FC) (41650.00 ± 315.34 g/kg), than that fed diet B (39034.24 ± 86.34 g/kg) and then diet C (38276.00 ± 342.97 g/kg). Juveniles fed Coppens feed did better, with a feed conversion ratio (FCR) of 2.42 ± 0.06, followed by 2.59±0.04 for diet B and 2.67 ± 0.03 for fish fed diet C. Feed conversion efficiency (FCE) was higher in fish fed diet A (41.26±0.94 %), followed by 38.54 ± 0.54 % (diet B) and least (37.52 ± 0.51 %) (diet C). The FC and FCR varied significantly between the fish fed the 3 diets at p<0.05, while FCE was not significantly different between the 3 treatment groups at p>0.05. The water parameters of the culture water varied significantly between each treatment groups (p<0.05), and were within the rage suitable for normal growth of fish. Though coppens feed yielded better growth performance and feed utilisation, the use of COBD and SBD is recommended for fish farmers in Nigeria. More researches should be carried out on using chicken offals and shrimps in fish feed formulation.

scholarly journals Growth performance, carcass characteristics, digestibility and economics of broiler production fed diets containing different levels of camel rumen content in the Semi- Arid Zone of Nigeria

2020 ◽  
Vol 44 (5) ◽  
pp. 82-92
Author(s):  
G. Mohammed ◽  
L. G. Asheikh ◽  
U. M. Kolo ◽  
F. I. Abbator ◽  
Z. M. Chana ◽  
...  
Keyword(s):  
Weight Gain ◽  
Growth Performance ◽  
Daily Weight Gain ◽  
Rumen Content ◽  
Test Material ◽  
Final Body Weight ◽  
Treatment Groups ◽  
Groundnut Cake ◽  
Carcass Parameters ◽  
Different Levels

The feeding value of different levels of camel rumen content in broiler diet was investigated using 150 Hover marshal broiler chickens from one-day to 63-days of age. The birds were randomly allotted to five /diets with two replicates of 15 birds each. The diets (starter and finisher) were formulated to contain 0, 5, 10, 15 and 20% camel rumen content in T1, T2, T3, T4 and T5 diets respectively. At nine week of the experiment three birds per replicate were selected for carcass measurement. The backs, hearts, kidneys, lungs, liver and spleen were not significantly (P > 0.05) different among the treatment groups while other parameters were significantly (P<0.05) different among the treatment groups. At week eight of the experiment three birds per replicate were selected for digestibility study. At the starter stage, the daily feed intake and daily weight gain were significantly (P<0.05) different among the treatment groups but only the feed conversion ratio was not affected (P>0.05) by the camel rumen content (CRC) in the diets. However, broiler chicks fed CRC T1 (0%), T2 (5%), T3 (10%) and T4 (15%) had better daily weight gain than those fed T5 (20%). During the finisher stage, all the growth parameters were not affected (P>0.05%) by CRC except final body weight which was affected (P<0.05) by the test material. Economic of production showed that CRC diets were not profitable in terms of cost of feed per kg weight gain during the starter stage. At finisher stage the cost of feed per kg weight gain were better in broilers chicken fed CRC based-diets. The result of the experiment showed that camel rumen content can replace maize and groundnut cake up to 15% level without deleterious effect on the roductive performance of broiler chicks.However, at finisher stage up to20%dietarymaize and groundnut cake could be replaced with CRC without adverse effect on the growth performance, carcass parameters, digestibility and economics of production.

scholarly journals Growth Performance, Carcass Characteristics and Serum Biochemistry of Broiler Chicken Fed Graded Levels of Sun-Dried Irish Potato Peel Meal

2017 ◽  
Vol 5 (5) ◽  
pp. 525
Author(s):  
Wafar James Raphael ◽  
Ojinnaka Ebere Perpetual ◽  
Tarimbuka Isa Luka ◽  
Iliya Samuel Deacon ◽  
Shehu Ibrahim Isa
Keyword(s):  
Growth Performance ◽  
Broiler Chickens ◽  
Carcass Characteristics ◽  
Serum Biochemistry ◽  
Irish Potato ◽  
Daily Weight Gain ◽  
Feed Conversion ◽  
Potato Peel ◽  
Different Levels ◽  
Finisher Diets

An experiment was conducted to evaluate the effect of substituting different levels of sun-dried Irish potato peel meal (SPPM) for maize in diets of broiler chickens. Five diets in which SPPM was replaced with 0 (0SPPM), 25 (25SPPM), 50 (50SPPM), 75 (75SPPM) and 100% (100SPPM) of maize in starter and finisher diets for a 8 week period using broiler chickens were examined. A total of 300 two weeks old broilers chicks Anak 2000 were randomly allotted to five experimental diets with six pen per treatment and 10 birds chicks per pen. Body weight and feed intake of broilers, and feed conversion ratio were determined at the beginning and 56th day of the experiment respectively. On day 56, four broilers from each pen were selected and slaughtered to determine some carcass characteristics and serum biochemistry. The result of growth performance showed that 100SPPM decreased daily weight gain of chickens when compared to other SPPM levels (P

Weight gain and feed utilization of Hereford steers exposed to diazinon

1997 ◽  
Vol 77 (1) ◽  
pp. 181-183
Author(s):  
T. J. Danielson ◽  
L. R. Golsteyn
Keyword(s):  
Weight Gain ◽  
Positive Control ◽  
Plasma Cholinesterase ◽  
Feed Utilization ◽  
Daily Weight Gain ◽  
Feed Consumption ◽  
Organophosphate Insecticide ◽  
Treatment Groups ◽  
Body Weights ◽  
Negative Controls

Body weights and feed consumption were monitored in 48 Hereford steers, under feedlot conditions, for 10 wk after exposure to diazinon, an organophosphate insecticide. Experimental design consisted of four complete blocks, each of four treatment groups (positive and negative controls, two insecticidal ear tags and four insecticidal ear tags). Plasma cholinesterase activity was reduced by 50%, 24 h after topical application of diazinon directly to the skin (positive control) but was not reduced after attachment of either two or four insecticidal ear tags per animal. Daily weight gain and feed utilization in control animals, during the 70-d study, were 1.21 ± 0.22 kg d−1 and 0.144 ± 0.007 kg kg−1 (dry matter basis) and were not altered in steers exposed to diazinon. Key words: Cattle, diazinon, weight gain, cholinesterase

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