Effect of different feed restriction regimens on performance, behaviors, blood cortisol, and carcass parameters of growing Sasso broilers

2021 ◽  
Vol 53 (5) ◽  
Author(s):  
Esraa Shusha ◽  
Souad Ahmed ◽  
Essam Ali ◽  
Ahmed Sabek
Keyword(s):  
Feed Restriction ◽  
Carcass Parameters

scholarly journals Influence of Feed Restriction on Plane of Nutrition and Carcass Parameters in Ram Lambs

2018 ◽  
Vol 7 (05) ◽  
pp. 1708-1713
Author(s):  
B. Sivanagendra Babu ◽  
M.V.A.N. Suryanarayana ◽  
E. Raghava Rao ◽  
P. Asha Latha
Keyword(s):  
Feed Restriction ◽  
Carcass Parameters ◽  
Ram Lambs

scholarly journals Quantitative feed restriction from 35 to 42 days of age for broiler chickens

2013 ◽  
Vol 14 (4) ◽  
pp. 778-784 ◽  
Author(s):  
Cristiano Bortoluzzi ◽  
Jovanir Inês Müller Fernandes ◽  
Jean Paulo Contini ◽  
Tiago Jacob Gurski ◽  
Aline Fernanda Gonçalves Esser ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Broiler Chickens ◽  
Crude Protein ◽  
Dry Matter ◽  
Control Treatment ◽  
Feed Restriction ◽  
Composition Analysis ◽  
Randomized Design ◽  
Carcass Parameters ◽  
Completely Randomized Design

The objective of this study was to evaluate the effect of increasing levels of feed restriction in broilers aged from 35 to 42 days, on the performance, carcass parameters and intensity of lesions at slaughter. A total of 1,225 one-day old chicks were obtained from a commercial hatchery and were grown over a 34-days period (five weeks). At 34 days of age all birds were weighed and redistributed into a completely randomized design to perform the following treatments: control (0% feed restriction), 10, 20, 30 or 40% feed restriction. The amount of feed given to animals was adjusted daily according to the previous day's intake of the control treatment. At 42 days, birds were weighed and two birds per pen were slaughtered, one to evaluate carcass yield and cuts and the other for body composition analysis. Weight gain and feed intake were decreased linearly (p<0.05) according to increasing levels of restriction, while the feed:gain ratio showed a quadratic effect (p<0.05). The hot eviscerated carcass weight decreased linearly (p<0.05) according to increasing levels of restriction, without effects on the carcass, breast and thigh yield. The dry matter and fat of the carcass decreased and the crude protein increased (p<0.05), according to levels of restriction. We conclude that feed restriction of 2.5% in the last week of life can improve the feed efficiency of poultry, when there is a higher accumulation of fat in the carcass.

scholarly journals 77 The effect of naturally occurring levels of multiple mycotoxins on growth performance and carcass parameters of grow-finish pigs

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 54-55
Author(s):  
Leigh Ruckman ◽  
Stacie Gould ◽  
John Patience
Keyword(s):  
Growth Performance ◽  
Economic Impact ◽  
Environmental Conditions ◽  
Fixed Effects ◽  
Control Diet ◽  
Naturally Occurring ◽  
Carcass Parameters ◽  
Low Levels ◽  
Dietary Treatments ◽  
Over Time

Abstract Mycotoxins may not be an issue every year, but the proper environmental conditions can cause a spike in contaminated grains and cause severe economic impact on pork producers. The objective of this study was to determine the effect of naturally occurring infections of deoxynivalenol, zearalenone and fumonisins (DZF) on growth performance and carcass parameters in grow/finish pigs. One hundred pigs (BW 34.0 ± 0.9 kg; L337 × Camborough, PIC, Hendersonville, TN) were randomly assigned to 1 of 2 dietary treatments with 10 split-sex pens/treatment. The control diet (CTL) contained low levels of DZF and the CTL+DFZ diet contained high levels of DZF. Diets were fed in 4 phases over the 126-d experiment period. The CTL diet contained 1.6, 1.6, 1.8 and 1.2 mg deoxynivalenol/kg and CTL+DZF contained 9.2, 6.9, 5.8 and 3.8 mg deoxynivalenol/kg in the 4 diet phases, respectively. The CTL contained 0.30, 0.32, 0.51 and 0.32 mg zearalenone/kg and 0.7, 0.8, 0.8 and 0.9 mg total fumonisins/kg; CTL+DFZ contained 0.59, 0.72, 0.86 and 0.57 mg zearalenone/kg and 1.0, 1.1, 1.2 and 0.9 mg total fumonisins/kg for phases one through four, respectively. Data were analyzed using PROC MIXED of SAS (9.4) with treatment, sex, and their interaction as fixed effects. Compared to CTL, feeding CTL+DFZ decreased final BW (130.3 vs 120.5 kg; P&lt; 0.001), ADG (0.95 vs 0.79 kg/d; P&lt; 0.001), ADFI (2.73 vs 2.49 kg/d; P=0.016), and G:F (0.35 vs 0.32; P=0.043). Feeding CTL+DFZ decreased HCW (92.3 vs 89.4 kg; P=0.024) and increased dressing percentage (70.9 vs 74.3%; P=0.009) and tended to reduce loin depth (7.0 vs 6.8 cm; P=0.057) compared to CTL. Diet did not affect backfat depth or lean percentage (P &gt;0.10). In conclusion, diets naturally contaminated with multiple mycotoxins reduced growth performance and adversely affected carcass parameters; pigs did not adapt over time to the mycotoxins.

scholarly journals Pike-Perch (Sander lucioperca) and Rainbow Trout (Oncorhynchus mykiss) Fed with an Alternative Microorganism Mix for Reducing Fish Meal and Oil—Fishes’ Growth Performances and Quality Traits

Foods ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1799
Author(s):  
Michaela Schafberg ◽  
Karin Loest ◽  
Andreas Müller-Belecke ◽  
Sascha Rohn
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Growth Performance ◽  
Fish Meal ◽  
Control Diet ◽  
Sander Lucioperca ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Growth Performances ◽  
Pike Perch ◽  
Carcass Parameters

In the last decades, several plant-based materials were used for the substitution of fish meal and oil in aquaculture. The present study evaluated the fish quality and the sensory differences of rainbow trout (Oncorhynchus mykiss) and pike-perch (Sander lucioperca) from three different feeding groups, which were fed a commercially available industrial (standard) diet, a control diet, and a special microorganism-based feed mix. This feed mainly consisted of a mix made of Rhodotorula glutinis, Crypthecodinium cohnii, and Arthrospira sp. and had 50% less fish meal and fish oil compared to typical control diets. At the beginning, the pike-perch population was six months old, and the rainbow trout population was 15 months old. The feeding study duration was 16 weeks and every four weeks the growth performance and several morphometric parameters were recorded. Afterwards, sensory evaluation took place to identify possible trends. Sensory evaluation revealed that the rainbow trout groups did not show any significant differences to the standard and control fish fillets with regard to odor, texture, and taste. The effects on rainbow trout growth performances and carcass parameters were similar to the standard group. The feed mix was not optimal for pike-perch farming, which was also reflected by significantly adversely affected growth performance and carcass parameters. The sensorial evaluation showed an opposite trend: here, only small differences in the fillets from the feed mix and standard/control diet were observed.

scholarly journals 214 The effects of an 18-hour transit or complete feed and water restriction on feed bunk displacements and need preferences in growing feedlot steers

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 5-5
Author(s):  
Katie J Heiderscheit ◽  
Erin Deters ◽  
Alyssa Freestone ◽  
Joshua Peschel ◽  
Stephanie L Hansen
Keyword(s):  
Repeated Measures ◽  
Dry Matter ◽  
Treatment Time ◽  
Dry Matter Intake ◽  
Feed Restriction ◽  
Water Restriction ◽  
Trained Observer ◽  
Aggressive Interactions ◽  
Feedlot Steers ◽  
Effect Of Treatment

Abstract The objective was to investigate effects of 18 h feed and water restriction or transit on cattle behavior. Angus-cross steers (36; 353 ± 33 kg) were housed in pens of 6 and assigned to treatments: control (CON), full access to feed and water; deprived (DEPR), no feed or water for 18 h; or transported (TRANS), trucked for 18 h. Individual BW (n = 12 steers/treatment) was recorded on d 0, 1, 3, 8, and 14, and individual dry matter intake (DMI) was determined via GrowSafe bunks. Bunk displacements on d 1 were recorded for each pen (n = 2 pens/treatment) by one trained observer continuously for 2 h in 10 min intervals via video analysis. Steer need preferences were assessed as time individuals took to perform behaviors (eat, drink, lay) after treatments ended on d 1. Data were analyzed using Proc Mixed of SAS with fixed effect of treatment; displacements, BW, and DMI were analyzed as repeated measures. Upon return to pens, time to eat or drink did not differ between DEPR and TRANS (P ≥ 0.17), but time to lay was 70.5 min for DEPR vs. 16.5 min for TRANS (P = 0.01). Displacements were greater for DEPR than CON or TRANS during the first 90 min after accessing feed, while CON displaced more frequently than TRANS for the first 30 min (treatment × time; P = 0.02). While DMI for TRANS was not recovered until d 2, DEPR and CON had similar DMI on d 1 (treatment × day; P &lt; 0.01). Similarly, TRANS BW were, and DEPR tended to be, lesser than CON on d 1; however, BW among treatments were not different on other days (treatment × day; P &lt; 0.01). Thus, restricting feed increases aggressive interactions at the bunk and cattle trucked long distances are quick to lay down when allowed. These behaviors should be considered when managing an unintentional feed restriction event or receiving cattle into the feedlot.

scholarly journals Broiler growth and efficiency in response to relaxed maternal feed restriction

2021 ◽  
Vol 100 (4) ◽  
pp. 100993
Author(s):  
N.M. Zukiwsky ◽  
M. Afrouziyeh ◽  
F.E. Robinson ◽  
M.J. Zuidhof
Keyword(s):  
Feed Restriction

scholarly journals Macromineral and trace element requirements for Santa Ines sheep

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dayanne Lima Sousa ◽  
Marcos Inácio Marcondes ◽  
Luciano Pinheiro Silva ◽  
Francisco Wellington Rodrigues Lima ◽  
Caio Julio Lima Herbster ◽  
...  
Keyword(s):  
Trace Element ◽  
Average Daily Gain ◽  
Feed Restriction ◽  
Initial Body Weight ◽  
Formulated Diets ◽  
Retention Coefficient ◽  
Santa Inês ◽  
Animal Metabolism ◽  
Daily Gain ◽  
Main Factor

AbstractMinerals play an important role in animal metabolism. Knowledge of mineral requirements allows well-formulated diets to be provided, which is the main factor that affects performance. To determine the macromineral and trace element requirements for growth and maintenance, thirty-eight 2-month-old Santa Ines lambs with initial body weight (BW) of 13.0 ± 1.49 kg were distributed in a factorial design with feeding levels (ad libitum, 30% and 60% feed restriction) and sex classes [castrated (CM) and intact males (IM)]. The net mineral requirements for gain were higher (P < 0.05) with increasing BW and average daily gain, except for Ca and Na, which remained constant as the empty BW (EBW) increased. The macromineral net requirement for maintenance (g/kg EBW0.75) and the true retention coefficient (k; %) were 0.0784 and 65.2 for Ca, 0.0926 and 80.0 for P, and 0.0379 and 59.0 for K, respectively. The k of Mg was higher (P < 0.05) for IM (11.3 for IM and 7.9 for CM). Sex did not affect (P > 0.05) the maintenance requirement of the trace elements Co, Cu, Zn and Cr which were 0.0015, 0.037, 0.698, and 0.0055 (mg/kg EBW0.75), respectively. Our study indicated that the Santa Ines net mineral requirements are different from the main nutritional requirements established by committees for sheep, which may result in unbalanced diets.

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