Growth Response, Survival, Feed Conversion and Protein Utilization in Fingerlings of Rohu, Labeo Rohita (Hamilton) to Diets of Different Protein Levels

One hundred and twenty-four feeder pigs, representing two breed groups (Hampshire × Yorkshire and Yorkshire) were used in three experiments to compare the live performance and carcass characteristics of boars, barrows and gilts fed, from 25 to 92 kg, a 16% protein, barley–soybean meal diet or diets based on a utility grade, soft wheat (Triticum aestivum cv. Pitic 62) with 0, 7½ and 15% field peas (Pisum sativum cv. Century) to provide total protein levels of 13, 14 or 15%. Under conditions of adequate nutrition, boars were superior to barrows in efficiency of feed conversion and estimates of carcass leanness, while gilts were intermediate in feed conversion and equivalent to boars in carcass indices. The amount and composition of the diet consumed had a greater effect upon the relative performance of boars and, to a lesser extent, of gilts than was observed with barrows. In addition, the dressing percentage was consistently lower with boars than with barrows or gilts. Sexual odor or taint was not noticeably present in the carcasses at the packing plant, although there was a tendency for meat from boars on restricted feeding to have a higher moisture and darker lean than that present in carcasses from barrows and gilts. The results also suggested that satisfactory performance of growing–finishing pigs could be achieved with diets based on Pitic 62 wheat using field peas as the sole source of supplementary protein.

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Effects of lasalocid and protein levels on feed intake and growth rate of Awassi lambs

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200596288 ◽

1997 ◽

Vol 1997 ◽

pp. 187-187

Author(s):

M. M. Muwalla ◽

M. Y. Harb ◽

T. F. Crosby

Keyword(s):

Growth Rate ◽

Feed Intake ◽

Feed Efficiency ◽

Published Data ◽

Growth Promoter ◽

Feed Conversion ◽

Protein Levels ◽

Feedlot Lambs ◽

Lamb Growth ◽

Awassi Lambs

Lasalocid is a polyether antibiotic derived from the fermentation of streptomyces lasaliensis used as a coccidiostat in sheep. There are varying literature reports on lamb growth rate and feed intake when lasalocid is included in the diet of feedlot lambs. While some reports have shown that lasalocid enhances feed efficiency in ruminants by decreasing feed intake and either maintaining or improving rate of gain others indicate that lasalocid did not have any effect on lamb growth rates or feed efficiency (Stobart et al., 1987). Also, when lasalocid was fed to Chios lambs, growth rate was increased but there was no improvement in feed conversion efficiency (Hadjipanayiotou et al., 1988). There are no published data in the literature relating to the use of lasalocid as a growth promoter in the Awassi breed of sheep fed complete diets and the purpose of this study was to investigate the effect of lasalocid with two levels of protein on the growth rate and feed efficiency of weaned male and female Awassi lambs.

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Growth Response of Juveniles of Rohu, Labeo Rohita to Different Levels of Lipid in the Diet

Fisheries and Aquaculture Journal ◽

10.4172/2150-3508.1000210 ◽

2017 ◽

Vol 08 (03) ◽

Author(s):

Roopma Gandotra ◽

Ritu Kumari ◽

Monika Sharma ◽

Dalbir Singh

Keyword(s):

Growth Response ◽

Labeo Rohita ◽

Different Levels

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Dietary supplementation of organic selenium to improve growth performance and protein utilization in African catfish fed with different protein level diets

Jurnal Akuakultur Indonesia ◽

10.19027/jai.20.2.130-138 ◽

2021 ◽

Vol 20 (2) ◽

pp. 130-138

Author(s):

Giri Maruto Darmawangsa ◽

Muhammad Agus Suprayudi ◽

Nurbambang Priyo Utomo ◽

Julie Ekasari

Keyword(s):

Growth Performance ◽

Dietary Protein ◽

Protein Level ◽

Dietary Supplementation ◽

High Protein ◽

Utilization Efficiency ◽

African Catfish ◽

Protein Utilization ◽

Organic Selenium ◽

Protein Levels

This study aimed to evaluate the effect of organic selenium supplementation on diet with different protein levels on the growth performance and protein utilization of African catfish juvenile. A randomized 2×3 factorial design with two dietary protein levels (27% and 32%) and three dietary selenium (Se) supplementation levels (0 mg/kg, 3 mg/kg, and 6 mg/kg diet) in triplicates were applied in the study. African catfish juvenile with an initial average body weight and body length of 27.00 ± 0.14 g and 15.0 ± 0.5 cm, respectively, was reared in 18 units of aquarium (141 L) at a density of 142 fish/m3 for a rearing period of 40 days. Increasing organic Se supplementation level up to 6 mg/kg at high protein feed resulted in higher fish growth and final biomass, lower FCR, and higher protein utilization efficiency than those of other treatments. Furthermore, supplementation of organic Se also resulted in lower lipid and higher Se concentrations in the fish body as well as higher blood protein level compared to those of the control. In conclusion, the result of this study suggested that dietary supplementation of organic Se up to 6 mg/kg could enhance the growth and protein utilization in African catfish fed with both low and high protein diet. Keywords: African catfish, growth, dietary protein, protein utilization, organic selenium. ABSTRAK Penelitian ini bertujuan mengevaluasi pengaruh suplementasi selenium organik pada pakan dengan kadar protein yang berbeda terhadap kinerja pertumbuhan dan pemanfaatan protein pakan ikan lele Clarias gariepenus. Penelitian didesain menggunakan rancangan acak lengkap faktorial 2×3 dengan dua tingkat protein pakan (27% dan 32%) dan tiga tingkat suplementasi selenium (Se) pakan (0 mg/kg, 3 mg/kg, dan 6 mg/kg diet) sebanyak tiga ulangan. Ikan lele yang digunakan memiliki bobot awal rata-rata dan panjang tubuh 27 ± 0.14 g dan 15.0 ± 0.5 cm, dipelihara dalam 18 unit akuarium (141 L) dengan kepadatan 142 ekor/m3 selama 40 hari pemeliharaan. Peningkatan suplementasi Se organik hingga 6 mg/kg pada ikan yang diberi pakan protein tinggi menghasilkan kinerja pertumbuhan ikan dan biomassa akhir yang lebih tinggi, FCR yang lebih rendah, dan efisiensi pemanfaatan protein pakan yang lebih tinggi daripada perlakuan lain. Selain itu, suplementasi Se organik juga menghasilkan kadar lemak yang lebih rendah dan konsentrasi Se tubuh yang lebih tinggi serta kadar protein darah yang lebih tinggi. Kesimpulan dari penelitian ini yaitu suplementasi Se organik pada pakan hingga 6 mg/kg dapat meningkatkan kinerja pertumbuhan dan pemanfaatan protein pakan pada ikan lele yang diberi pakan dengan kadar protein rendah dan tinggi. Kata kunci: ikan lele, pertumbuhan, protein pakan, pemanfaatan protein, selenium organik.

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Combined Effects of Citric Acid and Phytase Supplementation on Growth Performance, Nutrient Digestibility and Body Composition of Labeo rohita Fingerlings

Aquaculture Studies ◽

10.4194/aquast656 ◽

2021 ◽

Vol 22 (1) ◽

Author(s):

Maryam Iqbal ◽

Muhammad Afzal ◽

Atif Yaqub ◽

Khalid Mahmood Anjum ◽

Komal Tayyab

Keyword(s):

Body Composition ◽

Citric Acid ◽

Growth Performance ◽

Labeo Rohita ◽

Antinutritional Factors ◽

Nutrient Digestibility ◽

Whole Body ◽

Canola Meal ◽

Feed Conversion ◽

Plant Materials

Aquaculturists have been concentrating their efforts to design aquafeeds using agro by-products to reduce feed costs. However, the presence of a wide variety of antinutritional factors (ANFs) in plant materials is one of the major obstacles. For this purpose, a 2x2 factorial experiment was established to evaluate the suitability of canola meal with citric acid (CA) and phytase (PHY) supplementation for growth performance, nutrient digestibility and body composition of Labeo rohita fingerlings. Five isocaloric and isonitrogenous diets; D1 (control; without CA and PHY), D2 (CA 15 g/kg+PHY 1000 FTU/kg), D3 (CA 30 g/kg+PHY 1000 FTU/kg), D4 (CA 15 g/kg+PHY 2000 FTU/kg) and D5 (CA 30 g/kg+PHY 2000 FTU/kg) were fed to fish (mean initial weight 7.61±0.31 g) in triplicates for 90-days. The growth performance was significantly increased while feed conversion ratio was decreased with D3 compared to control and other CA and PHY supplemented groups (P<0.05). Furthermore, higher digestibility (%) of nutrients (dry matter, crude protein and ash) and improved whole-body composition was also exhibited by fish fed with D3 (P<0.05). Hence, the above results elucidate that supplementation of 30 g/kg CA with 1000 FTU/kg PHY could be a useful approach for improved growth performance, nutrients digestibility and body composition of L. rohita.

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