scholarly journals Artificial aeration promotes better zootechnical performance and physiological balance of tambaqui (Colossoma macropomum) cultivated in a system without continuous water flow (Amazon: Brazil)

2021 ◽  
Vol 10 (1) ◽  
pp. e32310111759
Author(s):  
Marlos Oliveira Porto ◽  
Jucilene Cavali ◽  
Ivan Dias de Medeiros ◽  
Maiza Oliveira Soares ◽  
Jerônimo Vieira Dantas Filho ◽  
...  
Keyword(s):  
Weight Gain ◽  
Water Flow ◽  
Hematological Parameters ◽  
Daily Weight Gain ◽  
Blood Collection ◽  
Total Biomass ◽  
Average Daily Weight Gain ◽  
Colossoma Macropomum ◽  
Artificial Aeration ◽  
Continuous Use

The aimed of the study was to evaluate the effect of continuous artificial aeration on zootechnical performance, hematological characteristics and glucose concentration of tambaqui (Colossoma macropomum) cultivated in a system without water flow. The study was conducted with two treatments, with aeration and without artificial aeration. Were 600 tambaqui juveniles with an average initial weight of 15 ± 0.15g were distributed in two excavated tanks. Thirty fish were captured per cultivation unit to perform monthly biometric measurements and were subjected to blood collection to determine hematological parameters. There was no difference between hematological variables (p<0.05). However, the continuous use of artificial aeration provided fish with more comfortable conditions, resulting in greater performance (p<0.05) in up to 90 days of cultivation, with an average daily weight gain of 4.82 g compared to 4.49g to the system without artificial aeration. It can be inferred that fish grown in a system without artificial aeration presented, when compared to those raised in a system with continuous artificial aeration, smaller values (p<0.05) of growth, both in weight and in length, consequently the continuous use of the aerator provided favorable conditions for the fish, resulting in average daily weight gain and total biomass gain.

scholarly journals Manipulation of growth of the Amazonian fish tambaqui, Colossoma macropomum (Characiformes: Serrasalmidae): analysis of physiological and zootechnical aspects

2018 ◽  
Vol 48 (3) ◽  
pp. 197-206 ◽  
Author(s):  
Arlan de Lima PAZ ◽  
Adalberto Luis VAL
Keyword(s):  
Growth Hormone ◽  
Growth Rate ◽  
Weight Gain ◽  
Hematological Parameters ◽  
Experimental Period ◽  
Daily Weight Gain ◽  
Efficient Production ◽  
Feed Conversion ◽  
Experimental Conditions ◽  
Colossoma Macropomum

ABSTRACT Colossoma macropomum, known locally as tambaqui, is the native fish most farmed in Brazil, however, technological advances are needed to reach efficient production rates. Modulating growth factors, such as growth hormone, may be associated with improved growth rate and feed efficiency. The use of exogenous hormone for fish rearing is prohibited in Brazil, yet the experimental use of bovine hormone can be useful in research aimed at understanding how to stimulate endogenous growth hormones in fish. Therefore, the present study had the strict objective of understanding the effects of growth hormone on the physiology and zootechnical parameters of C. macropomum under experimental conditions. The animals were intraperitoneally injected every fifteen days with 1, 10 and 100 μg g-1 of bGH using 0.9% NaCl saline as diluent. The 10 and 100 μg g-1 bolus had a positive effect on the performance indexes of C. macropomum: weight gain (g), growing length (cm), daily weight gain (g), feed conversion and specific growth rate (% per day). The bGH promoted a greater increase in length than in mass, which caused a reduction in condition factor of the individuals receiving a bolus of 10 and 100 μg g-1. Furthermore, bGH caused no changes in glucose levels, cortisol, hematological parameters, plasma levels of Na+ and K+, and activity of gill’s H+-ATPase and Na+, K+-ATPase, at least during the experimental period considered in the present study.

scholarly journals The Impacts of Waterproof Insulated Jackets on Lamb Performance on a UK Lowland Farm

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 217
Author(s):  
Eleanor Brooke Collins ◽  
Nicola Blackie
Keyword(s):  
Weight Gain ◽  
Cold Stress ◽  
Morbidity And Mortality ◽  
Daily Weight Gain ◽  
Birth Date ◽  
Body Temperatures ◽  
Average Daily Weight Gain ◽  
Treatment Groups ◽  
Surface Temperatures ◽  
Weight Gains

The majority of lamb losses occur within the first two weeks of life, with cold stress being a major cause of lamb morbidity and mortality. This study investigated the effect of insulating lamb jackets on newborn lambs. One hundred and four newborn lambs were randomly allocated by birth date to two treatment groups, (a) non-jacketed (n = 52) or (b) jacketed (n = 52), for fourteen days after birth. The live weights of lambs were recorded regularly up to 21 days, and average daily weight gains were calculated from these data. For the first two days after recruitment to the study, surface and body temperatures of lambs were also recorded. The jackets significantly increased the lambs’ surface temperatures, providing a warmer microclimate and reduced cold stress for jacketed lambs. There was no significant effect of the insulating jackets on estimated body temperatures, live weights or average daily weight gain of the lambs in this study. There were no detrimental effects of the jackets, and no rejection of lambs occurred.

scholarly journals Performance of some growth promoters on hybrid walking catfish (Clarias batrachus × Clarias gariepinus)

2017 ◽  
Vol 3 (1) ◽  
pp. 103-108
Author(s):  
Md Sirazul Islam ◽  
M Mamnur Rashid ◽  
Mohammad Shamsul Arefin ◽  
Pronab Naha ◽  
Md Rokanuddula
Keyword(s):  
Weight Gain ◽  
Control Diet ◽  
Animal Health ◽  
Clarias Gariepinus ◽  
Survival Rates ◽  
Clarias Batrachus ◽  
Daily Weight Gain ◽  
Growth Promoter ◽  
Average Daily Weight Gain ◽  
Growth Promoters

A study was conducted to determine the efficacy of three most commonly used growth promoters from different pharmaceutical companies on growth performance of hybrid walking catfish (Clarias batrachus × Clarias gariepinus). The experiment was done in the wet laboratory of the Department of Aquaculture, BAU, Mymensingh, with a total of 10 aquaria and 160 fish having mean initial weight of 6.3 ± 0.48 g. The three growth promoters, “Charger gel” from Fishtech (BD) Ltd., “Growth gel” from Advance Agrotech (BD) Ltd. and “Hepaprotect-aqua” from Renata Animal health Ltd., were used in separate nine (9) aquaria at recommended, lower dose and higher dose respectively. One aquarium was used as control (diet without any growth promoter). The fish were fed with paragon nursery floating feed at 20% of body weight in each aquarium for 28 days. Doses of Charger gel were given as 80, 60 and 100 mg/20 g feed/day, that of Growth gel, 0.14, 0.12 and 0.16 ml/20 g feed/day and of Hepaprotect-aqua, 30, 15 and 50 mg/20 g feed/day. Re-circulatory system was used throughout the experimental period. By applying recommended, lower and higher dose of “Charger gel”, mean final weights were found as 23.0, 21.9 and 35.9 g; average daily weight gain as 0.60, 0.56 and 1.06 g and specific growth rate (SGR) as 2.01, 1.93 and 2.70% respectively. For “Growth gel”, mean final weights were found as 22.8, 17.3 and 31.1 g; average daily weight gain as 0.59, 0.39 and 0.88 g and SGR as 1.99, 1.57 and 2.48 % respectively. For “Hepaprotect-aqua”, mean final weights were found as 24.2, 17.5 and 28.2 g; average daily weight gain as 0.64, 0.40 and 0.78 g and SGR as 2.09, 1.58 and 2.32% respectively. In all the cases survival rates were 100%. All the three growth promoters showed better results at their higher doses in comparison to their results in lower and recommended doses. However, in average Charger gel showed the best result than the other two growth promoters. This information on the efficacy study of growth promoters needs to be disseminated to the farmers for improved fish production.Asian J. Med. Biol. Res. March 2017, 3(1): 103-108

scholarly journals Optimization of hormonal dose during masculinization of tilapia (Oreochromis niloticus) fry

2012 ◽  
Vol 9 (2) ◽  
pp. 359-364 ◽  
Author(s):  
Z Ferdous ◽  
MM Ali
Keyword(s):  
Weight Gain ◽  
Oreochromis Niloticus ◽  
Fish Growth ◽  
Daily Weight Gain ◽  
Optimum Dose ◽  
Trial Period ◽  
Growth Data ◽  
Average Daily Weight Gain ◽  
Male Population ◽  
Commercial Feed

The experiment was conducted to optimize the dose of 17?-methyl testosterone (MT) during masculinization of tilapia (Oreochromis niloticus) fry. Five treatments were designed with various doses of hormone to find out the most effective one. The treatments were designated as T1 (0 mg MT/kg), T2 (40 mg MT/kg), T3 (50 mg MT/kg), T4 (60 mg MT/kg) and T5 (70 mg MT/kg). MT was administered orally by using nursery feed and Ethanol (as hormone carrier solvents) diet to tilapia fry for 28 days in hapa. After completion of the trial period of 28 days nursing of the experimental fry was continued for further 2 months with commercial feed. At the end of experiment the sex ratio was      determined by examining gonad after dissecting the fish. Growth performance was monitored by recording the morphometric characteristics i.e. weight gain (g), average daily weight gain (g). The analysis of growth data showed significant variation in weight, % weight gain, SGR (% /day) of fish among the different treatments. SGR increases with the increase of hormone dose. The present study demonstrated that all MT receiving treatments showed a significantly (p<0.01) higher male proportion (94.28%) than control (48.57%). The dose of 60 mg MT/kg of feed resulted in maximum male population (94.28%). The result indicated that the optimum dose of MT hormone was 60 mg /kg with a feeding period of 28 days after hatching.   DOI: http://dx.doi.org/10.3329/jbau.v9i2.11052   J. Bangladesh Agril. Univ. 9(2): 359–364, 2011

scholarly journals Influence of gender on carcass yield of twin lambs Blackbelly x Pelibuey at 56 days of age

2016 ◽  
Vol 68 (4) ◽  
pp. 1077-1084
Author(s):  
I. del C. García-Osorio ◽  
J. Oliva-Hernández ◽  
M.M. Osorio-Arce ◽  
G. Torres-Hernández ◽  
J. A. Hinojosa-Cuéllar ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Growth Yield ◽  
Daily Weight Gain ◽  
Longissimus Dorsi ◽  
Average Daily Weight Gain ◽  
Carcass Yield ◽  
Longissimus Dorsi Muscle ◽  
Dorsi Muscle ◽  
Males And Females

ABSTRACT The aim of this study was to determine the influence of gender on pre-weaning growth, yield and weight of primal cuts of the carcass of Blackbelly x Pelibuey lambs. 16 twin lambs were used. The lamb gender was the fixed factor. The variables evaluated were: body weight at birth and at weaning, average daily weight gain, weight and yield of carcass and primal cuts: neck, arm, thorax, abdomen and leg. Gender did not affect (P>0.05) body weight at birth. However, the pre-weaning average daily weight gain and body weight at weaning were affected (P<0.05) by the gender. Hot carcass yield and weight and primal cuts were not affected (P>0.05) by the gender of the lamb. Nevertheless, the area of the Longissimus dorsi muscle and cavity fat were different between males and females (P<0.05) 11.5±0.73cm2 and 198±0.05 g vs 9.3±0.73cm2 and 282±0.05g, respectively. In conclusion, in twin lambs Blackbelly x Pelibuey males had greater average daily weight gain and body weight at weaning than females. Carcass yield and weight and primal cuts were not affected by the gender of the lamb. However, males had greater area of the L. dorsi muscle than females and these in turn had a greater amount of cavity fat than males.

scholarly journals PVMS based on the lupine grain and amido-concentrative additives for young cattle feeding

2019 ◽  
pp. 74-83
Author(s):  
V. Radchikov ◽  
V. Tzai ◽  
G. Besarab ◽  
S. Piluk ◽  
S. Serguchev ◽  
...  
Keyword(s):  
Weight Gain ◽  
Total Nitrogen ◽  
Hematological Parameters ◽  
Live Weight ◽  
Daily Weight Gain ◽  
Feed Additive ◽  
Productivity Cost ◽  
Fourth Group ◽  
Group I ◽  
Young Cattle

The protein, vitamin and mineral supplements have been developed and it was studied the efficiency of feeding with them the young cattle in the composition of the grain production. The scientific and farm experiment has been carried out during 62 days. The study was conducted in four groups of bulls with 12 heads in each. The initial live weight at the beginning of the study was about 300–310 kg. Differences in feeding were in the fact that the grain forage for young animals of group I included PVMS No. 1, II – PVMS No. 2, III –PVMS No.3, IV – PVMS No 4. The grain feed is represented mainly by barley. The protein, vitamin and mineral supplement replenished 20 % of the deficient protein. It was discovered that concentration of hydrogen ions was practically at the same level in the rumen contents of steers of different groups. As for level of ammonia, VFA, total nitrogen, ciliates in the young cattle of I, II and III groups, the differences were insignificant. The concentration of ammonia of group IVcompared to I, II and III group was higher by 15.58, 23.61 and 21.9 %, VFA – by 6.7, 19.4 and 11.1 %, total nitrogen – by 3.32, 31.44 and 24.03 %, ciliates – by 4.35, 14.29 and 9.09 %, respectively. The research results showed that digestibility of protein, fiber and BEV was higher in the fourth group by 1–7 % compared with the rest groups (P>0.05). A slight increase in nitrogen deposition was found in IV group of young animals (by 4.7–11.9 %) receiving PVMS with AFA as a source of protein. The use of calcium and phosphorus by animals was almost at the same level. The research helped to determine that the average daily weight gain of animals of all the groups was within the range 629–710 g. The highest was in the fourth group consuming PVMS No. 4 with AFA as a protein component; the second place in terms is occupied by group I – 660 g, consuming PVMS No. 2, which included lupine, AFA and standard DKMK No. 1; PVMS No. 3 with depleted phosphate used as a source of phosphorus, took the last place in terms of this indicator – 629 g. Feed cost per 1 kg of weight gain was the lowest in IV group – 8.77 feed units, in I, II and III groups, it was higher by 8.32 %; 13.68 and 10.83 %, respectively. The cost of sold products from one animal during experiment turned out to be higher for steers that received PVMS No. 4 as compared to I, II and III groups by 6.82, 11.36 and 9.1 %, respectively. Keywords: feed additive, additives, steers, growth energy, digestibility, hematological parameters, live weight, productivity, cost price.

scholarly journals The dynamics of changes in selected parameters in relation to different air temperature in the farrowing house for sows

2008 ◽  
Vol 53 (No. 5) ◽  
pp. 195-203 ◽  
Author(s):  
S. Odehnalová ◽  
A. Vinkler ◽  
P. Novák ◽  
J. Drábek
Keyword(s):  
Weight Gain ◽  
Air Temperature ◽  
Daily Weight Gain ◽  
Average Daily Weight Gain ◽  
Raw Data ◽  
Mild Winter ◽  
Housing Environment ◽  
Lactating Sows

The purpose of this study was to analyse the influence of different external air temperature on changes in the air temperature of housing environment in the farrowing house for sows and consequent changes in selected parameters of performance in purebred Landrace sows and gilts. Raw data were analysed for 236 litters. The litters were born from October 2004 to March 2006. Air temperature in the farrowing house was monitored in the sow’s living zone and was closely related to changes in external air temperature (<I>P</I> < 0.01). At the optimal internal temperatures for lactating sows (16–22°C) during mild winter the lowest incidence of stillbirths (9.92%) was detected, whereas at high internal temperatures (above 28°C) the incidence of stillbirths was 11.32% (<I>P</I> < 0.01). The lowest average daily weight gain was recorded during mild winter (<I>P</I> < 0.05).

Average daily weight gain of Iberian fattening pigs when grazing natural resources

2011 ◽  
Vol 137 (1-3) ◽  
pp. 292-295 ◽  
Author(s):  
Vicente Rodríguez-Estévez ◽  
Manuel Sánchez-Rodríguez ◽  
Antón R. García ◽  
A. Gustavo Gómez-Castro
Keyword(s):  
Weight Gain ◽  
Natural Resources ◽  
Daily Weight Gain ◽  
Average Daily Weight Gain ◽  
Fattening Pigs

scholarly journals A simple and fast sampling method for chemical analyses and densitometry of bones through rib biopsies in cattle

2017 ◽  
Vol 37 (1) ◽  
pp. 31-35 ◽  
Author(s):  
Pedro Malafaia ◽  
Yury T.G. Salcedo ◽  
Ricardo A.R. Uscategui ◽  
Vinícius C. Souza ◽  
Diogo Fleury A. Costa ◽  
...  
Keyword(s):  
Weight Gain ◽  
Chemical Analysis ◽  
Dry Matter ◽  
Phosphorus Deficiency ◽  
Postoperative Recovery ◽  
Dry Matter Intake ◽  
Daily Weight Gain ◽  
Control Group ◽  
Average Daily Weight Gain ◽  
Simple Method

ABSTRACT: We developed and evaluated a fast and simple method to obtain suitable bone samples for densitometry and chemical analysis through biopsies of the 12th rib of cattle. The postoperative recovery, dry matter intake (DMI) and average daily weight gain (ADG) was evaluated in 36 Nellore steers, nine of which were randomly selected for the control group and 27 others were rib biopsied. Every 30 days, rib biopsy was performed in nine steers, using a corded-electric pistol-grip drill coupled with a hole saw of a 3mm diameter pilot drill bit. This rib biopsy technique provided a suitable sample obtained in a fast way and allowed the surgeon to work alone with the animal slightly sedated and restrained in the crush. Dry matter intake (DMI) was not affected in biopsied animals. At the end of the experimental period (116 days) the average daily weight gain (ADG) was similar in the steers biopsied or not. The described method provided rib samples from cattle suitable for densitometry and chemical analysis of bone tissue without effects on health and performance. This information could greatly increase the accuracy for the diagnosis of phosphorus deficiency in cattle raised on pasture and allow the evaluation of bone metabolism in experimental animals.

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