scholarly journals Genetic Resistance Against Scrapie Disease Related to Lamb Growth Performance Traits

2019 ◽  
Vol 50 (1) ◽  
pp. 8-14
Author(s):  
M. Ptáček ◽  
J. Ducháček
Keyword(s):  
Growth Performance ◽  
Genetic Resistance ◽  
Live Weight ◽  
Limiting Factor ◽  
Resistant Allele ◽  
Performance Traits ◽  
Longissimus Lumborum ◽  
Fat Thickness ◽  
The Impact ◽  
Lamb Growth

Abstract The objective of the study was to identify the impact of selection on genetic resistance against scrapie disease related to lamb growth performance attributes for Suffolk, Kent, Charollais, and Texel lambs.The allelic genotypes were grouped according to the presence of scrapie resistant allele (ARR): ARR homozygotes, ARR heterozygotes, no presence of ARR allele. The influence of these groups on lamb live weight (LW), musculus longissimus lumborum et thoracis depth (MLLT), and back-fat thickness at 100 days of age was investigated using SAS software. No significant differences for Suffolk and Charollais breeds were detected. Significantly highest LW (34.41 kg) and MLLT (27.80 mm) were noticed for Kent ARR homozygotes lambs, while significantly lowest values were estimated at lambs with absent ARR allele (LW = 33.42 kg, MLLT = 26.68 mm). Significantly lower muscle depth (–0.69 mm) was detected for Texel ARR homozygote compared to ARR heterozygote lambs. As a result, we were unable to detect a consistent evidence for reduced growth performance traits in relation to genetic resistance against scrapie disease. However, the number of animals in some groups caused as a limiting factor. This can be a potential reason of opposed trends in Texel and Kent lambs.

PSIV-11 Effects of Phytogenic Feed Additives on Growth Performance Traits of Finishing Swine

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 187-188
Author(s):  
Pengcheng Xue ◽  
Don W Giesting ◽  
Mark D Newcomb ◽  
Chad M Pilcher ◽  
Matthew J Ritter
Keyword(s):  
Growth Performance ◽  
Random Effect ◽  
Live Weight ◽  
Feed Additives ◽  
Experimental Unit ◽  
Finishing Pigs ◽  
Performance Traits ◽  
And Gender ◽  
Dietary Treatments ◽  
Commercial Research

Abstract This study was conducted at a commercial research facility and utilized 1,092 finishing pigs (PIC® 337 × Camborough®) in a RCBD with 3 dietary treatments to determine the effects of commercially available phytogenic feed additives on growth performance traits in finishing swine for the last 35 d prior to marketing. The dietary treatments were as follows: 1) Control; 2) Aromex Pro® (AP; Delacon) fed at 0.01%; and 3) Ambitine® (AM; PMI) fed at 0.1%. Pens with 13 pigs/pen and 0.66 m2/pig were randomly allotted to treatments on the basis of live weight and gender. Pigs had ad libitum access to corn-soy diets that met or exceeded the pig’s requirements (NRC, 2012). Aromex Pro® and Ambitine® were added to the diets at the expense of corn. Dietary treatments started on day 0 (BW = 97.7 kg; SEM = 1.04) and were fed throughout the 35 d trial period. On d 21, the two heaviest pigs per pen were marketed, while the remaining pigs in each pen were marketed on d 35. Pigs and feeders were weighed on d 0, 21, and 35. Data were analyzed by using PROC MIXED of SAS® version 9.4, and pen was the experimental unit. The model included the fixed effect of treatment and random effect of replicate. Pre-planned orthogonal contrasts were used to compare AP vs. Control and AM vs. Control. Feeding AP or AM for the last 35 d in finishing both improved (P < 0.05) ADG by 4%, ADFI by 3% and final BW by 1.6 kg over Control, but did not change feed to gain or mortality. These data demonstrate that phytogenic feed additives can improve growth performance traits in finishing swine.

Polyethylene glycol as a means for reducing the impact of condensed tannins in carob pulp: effects on lamb growth performance and meat quality.

2000 ◽  
Vol 78 (4) ◽  
pp. 810 ◽  
Author(s):  
A Priolo ◽  
G C Waghorn ◽  
M Lanza ◽  
L Biondi ◽  
P Pennisi
Keyword(s):  
Polyethylene Glycol ◽  
Growth Performance ◽  
Meat Quality ◽  
Condensed Tannins ◽  
The Impact ◽  
Lamb Growth

scholarly journals Impact of Siberian larch dihydroquercetin or dry distilled rose petals as feed supplements on 8 lamb's growth performance, carcass characteristics and blood count parameters.

2020 ◽  
Author(s):  
N. Zh. Stancheva ◽  
J. L. Nakev ◽  
D. B. Vlahova-Vangelova ◽  
D. K. Balev ◽  
S. G. Dragoev
Keyword(s):  
Growth Performance ◽  
Blood Count ◽  
Siberian Larch ◽  
Live Weight ◽  
Blood Parameters ◽  
Control Group ◽  
Rose Petals ◽  
The Impact ◽  
Group D ◽  
Experimental Group

Abstract The objective of this study was to determine the impact of dihydroquercetin from Siberian larch and dry distilled rose petals (DDRP) on growth performance, carcasses characteristics and blood parameters of lambs from the Bulgarian Dairy Synthetic population sheep. For the purpose of the study there were used 30 clinically healthy male lambs aged 65 days, levelled by live weight. They were housed in a totally indoor barn and were divided into one control and two experimental groups, each consisting of 10 animals that were fed for 50 days. The control group (C) was fed ground alfalfa + granulated compound feed. The experimental groups (D) and (R) were fed on the same diet supplemented either with 7.5 mg dihydroquercetin/kg/day or with 545 mg DDRP/kg/day respectively. The carcass yield of lambs having consumed dihydroquercetin or DDRP compared to lambs from control group C do not have significant differences (p > 0.05). The carcass conformation of C or R groups lambs do not differ (70% - class P, 30% - class O). The 90% of lamb's carcasses from the experimental group D were classified in class P. The dihydroquercetin feeding increases the relative fat content (p ≤ 0.01) of lamb carcasses but adversely affects their conformation. No significant differences (p > 0.05) were found between 1st h and 24th h post-mortem pH of control group C and experimental group D. Compared to them the pH values of the experimental group R were by 0.14-0.15 pH units lower (p ≤ 0.05). No significant differences (p > 0.05) were found in the blood count of the three studied groups of lambs. Exceptions were made for haemoglobin (HGL) in the experimental group D which were with 6-7 g/l higher (p ≤ 0.05) than these in control group C and experimental group R and the blood glucose (GLU) in the experimental group R which is with 0.25-0.28 mmol/l lower than determined in control group C and experimental group D.

scholarly journals Analysis of multivariate relations among birth weight, survivability traits, growth performance, and some important factors in Suffolk lambs

2017 ◽  
Vol 60 (2) ◽  
pp. 43-50 ◽  
Author(s):  
Martin Ptáček ◽  
Jaromír Ducháček ◽  
Luděk Stádník ◽  
Josef Hakl ◽  
Milena Fantová
Keyword(s):  
Birth Weight ◽  
Growth Performance ◽  
Management System ◽  
Body Condition Score ◽  
Live Weight ◽  
Lower Percentage ◽  
Dominant Factor ◽  
Performance Traits ◽  
Condition Score ◽  
System Data

Abstract. The aim of this study was to describe the relationships among lambs' birth weight, survivability traits, growth performance, and selected factors in Suffolk lambs kept under a specified extensive management system. Data were collected regarding 1012 Suffolk lambs born during a 3-year period (2012–2014) in one flock. Statistical analyses were conducted using the SAS and CANOCO program software. Birth weight was found to be an important factor influencing survivability and growth performance traits. Lambs with too low a birth weight (< 2.9 kg) had the worst results of practically all the survivability and growth performance traits. A significantly lower percentage of live-born lambs (5.2 to 6.1 %; P < 0.05) was also observed amongst overweight lambs at birth (> 6.0 kg) compared to lambs with a birth weight of 4–5.9 kg. Generally, the highest results of growth performance traits were detected in groups of lambs with a birth weight of 5.0–5.9 and 6.0–9.0 kg. Therefore, the optimal birth weight of Suffolk lambs was in the range of 5.0 to 5.9 kg in the evaluated flock management system. Litter size was found to be the dominant factor influencing birth weight, survivability, and growth performance traits, such that singles tended to have the highest birth weight and growth performance traits, while higher survivability traits were found in twins. The results of multivariate relations also clearly indicated that the selection of lambs should be focused on twins with regard to the monitoring of mature ewes' live weight at mating, which helped to improve the lambs' survivability traits, in particular. The monitoring of ewes' mature live weight at mating should also serve as a tool for flock management to shorten the lambing period in the flock and to improve the birth weight and growth performance traits of lambs. The mature ewe body condition score at mating should be monitored to ensure that lambs are adequately meaty and fatty. This study confirmed the importance of keeping records of birth weight and suggested practical implications of some important factors when improving flock profitability.

scholarly journals Comparison of growth performance and slaughter characteristics of Limousin and Charolais heifers

2010 ◽  
Vol 53 (5) ◽  
pp. 520-528 ◽  
Author(s):  
R. Zahrádková ◽  
L. Bartoň ◽  
D. Bureš ◽  
V. Teslík ◽  
V. Kudrna
Keyword(s):  
Growth Performance ◽  
Live Weight ◽  
Conversion Ratio ◽  
Carcass Composition ◽  
Feed Conversion Ratio ◽  
Average Weight ◽  
Production Traits ◽  
Feed Conversion ◽  
Slaughter Weight ◽  
Longissimus Lumborum

Abstract. The objective of this study was to determine the effects of breed and a diet containing linseed on the growth and carcass composition characteristics of heifers. A total of 48 Limousin (LI) and Charolais (CH) heifers with an average weight of 270 kg were assigned to two diets containing either extruded linseed (LIN) or no supplemental oilseed (CON). The target slaughter weight was set at 500 kg. The diet had no effect on any of the observed production traits. The CH heifers had higher live weight gains (P<0.001) and a lower feed conversion ratio (P<0.001). The LI heifers had a higher dressing percentage (P<0.001), higher meat to bone ratio (P<0.001), greater m. longissimus lumborum et thoracis area (P<0.05), and produced more internal and carcass fat (P<0.05). It was concluded that purebred LI heifers grew less rapidly and less efficiently but produced heavier carcasses with a more favourable meat to bone ratio compared to purebred CH heifers.

Influence of DAFS-25+polizon composition on blood and functional state of liver of steers at fattening

2020 ◽  
pp. 15-18
Author(s):  
Inna R. Kilmetova ◽  
◽  
Igor A. Rodin ◽  
Nazira I. Khayrullina ◽  
Nikolay G. Fenchenko ◽  
...  
Keyword(s):  
Functional State ◽  
White Blood Cells ◽  
Live Weight ◽  
The Body ◽  
Farm Animals ◽  
Control Group ◽  
Standard Diet ◽  
The Impact ◽  
Experimental Group ◽  
Stimulation Of

Summary. The disbalanced feeding and the uneven distribution of micro- and macroelements in the environment leads to a trace element, in particular hypomelanosis. To accelerate the growth and preservation of young farm animals include in the diet of various biological additives and drugs, which include selenium. For stimulation of weight gain in the livestock industry, as well as for the prevention and treatment of pathological processes in addition to micro - and macrouse amino acids, primarily methionine. The aim of this work was to study the influence of composition of DAFS-25+Polizon on morpho-biochemical parameters of blood and functional state of the liver in fattening bulls of black-motley breed in the conditions of the Republic of Bashkortostan. Experiments using were conducted on bull-calves of black-motley breed of the properties in the properties age from 6 to 15 months. The first experimental group during the experiment was additionally given the composition of DAFS-25+Polizon at a dose of 2 mg/kg, the animals of the control group received a standard diet. To assess the impact of the composition DAFS-25+Polizon on metabolism cattle studied morphological and biochemical indicators of blood and conducted histological examination of the liver. It is established that the use of the composition of DAFS-25+Polizon at a dose of 2 mg/kg increases the number of erythrocytes and hemoglobin in the experimental group and reduces the amount of white blood cells. The serum content of total protein, phosphorus and calcium increases in the group of experimental animals. Microscopic examination of the liver revealed no changes in the structure of the organ and hepatocytes in the experimental group, whereas in the control group hemodynamic disorders and dystrophic changes in liver cells were observed. Thus, the use of the composition DAFS-25+Polizon at a dose of 2 mg/kg of live weight in fattening bulls black-and-white breed contributes to the increase of redox processes in the body, stimulation of metabolism, prevent the development of liver disorders of cellular mechanisms of metabolism, optimizes the structure of the liver, which generally provides higher productivity.

Changing Composition and Growth Performance of Services Sector in India after Liberalization

2020 ◽  
pp. 432-436
Keyword(s):  
Growth Rate ◽  
Growth Performance ◽  
Direct Investment ◽  
Service Sector ◽  
World Market ◽  
Limiting Factor ◽  
Arunachal Pradesh ◽  
Services Sector ◽  
State Economy ◽  
The World

This present study makes an analysis of changing contribution of sub-sector and composition and growth performance in Indian economy. In addition to that, the contribution of sub-sector of service sector in state economy. The results revealed that the growth rate of Chandigarh was high due to providing especial emphasis on dominating sub-sectors of services and its most preferred destination for technology whereas, Sikkim and Arunachal Pradesh due to geographical and environmental conditions development were higher in floriculture and agriculture, although, tourism emerged as a new profession and have different opportunities. Apart of that, in the wake of some challenges in the form of lack of infrastructure, recent crisis in the world market, foreign direct investment (FDI) restrictions and outsourcing backlash were major limiting factor.

scholarly journals Consumer Perceptions of Meat Redness Were Strongly Influenced by Storage and Display Times

Foods ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 540
Author(s):  
Maddison T. Corlett ◽  
David W. Pethick ◽  
Khama R. Kelman ◽  
Robin H. Jacob ◽  
Graham E. Gardner
Keyword(s):  
Correlation Coefficient ◽  
Storage Period ◽  
Intramuscular Fat ◽  
Consumer Perceptions ◽  
Display Time ◽  
Eye Muscle ◽  
Longissimus Lumborum ◽  
Retail Display ◽  
Lamb Growth ◽  
Long Storage

Lamb (n = 79) meat colour was scored by 879 untrained consumers using a scale of 0 (brown) to 100 (red). This consumer colour score (CCS) was obtained on m. longissimus lumborum (loin) and m. semimembranosus (topside), stored for short (5–7 days), medium (33–35 days), and long periods (110–112 days) and a retail display time of up to 4 days. Consumers perceived topside to be less red initially and changed from red to brown more rapidly when stored for the long-storage period (p < 0.01). Whereas, the initial CCS of loin samples were similar across the storage periods (p > 0.05). CCS and the instrument measure oxy/met (reflectance of light at wavelengths 630 nm and 580 nm) had a low correlation coefficient of 0.33 (p < 0.01). The propensity for lamb growth and leanness indicated by sire breeding values for lamb weight, eye muscle depth, eye muscle fat depth, and loin intramuscular fat had varied and inconsistent effects on CCS. Therefore, even the selection on CCS.

scholarly journals Cost-Effectiveness of Black Soldier Fly Larvae Meal as Substitute of Fishmeal in Diets for Layer Chicks and Growers

2021 ◽  
Vol 13 (11) ◽  
pp. 6074
Author(s):  
Esther Khayanga Sumbule ◽  
Mary Kivali Ambula ◽  
Isaac Maina Osuga ◽  
Janice Ghemoh Changeh ◽  
David Miano Mwangi ◽  
...  
Keyword(s):  
Weight Gain ◽  
Live Weight ◽  
Daily Weight Gain ◽  
Feed Conversion ◽  
Alternative Source ◽  
Black Soldier Fly ◽  
Promising Alternative ◽  
Black Soldier Fly Larvae ◽  
Fly Larvae ◽  
The Impact

The acceptance of eco-friendly black soldier fly larvae meal (BSFLM) as sustainable alternative protein ingredient in poultry feeds continues to gain momentum worldwide. This study evaluates the impact of BSFLM in layer chick and grower diets on the growth, carcass quality and economic returns. Mean weekly weight gain and total live weight per chick and grower varied significantly. The highest final weight gain was achieved when birds were provided diet with 25.6% BSFLM. Average daily feed intake (ADFI), average daily weight gain (ADG) and overall weight gain of the chick varied significantly, except for the feed conversion ratio (FCR). For grower birds, ADFI, ADG, FCR and overall weight gain did not vary significantly across the various feeding regimes. The weight of the wings and drumsticks had a quadratic response with a maximum weight obtained at 33% inclusion of BSFLM. The weight of the internal organs were not significantly affected by dietary types. Positive cost–benefit ratio and return on investment was recorded for diet types with higher BSFLM inclusion levels (>75%). Diets with 25% and 100% BSFLM inclusion were the most suitable and cost-effective, respectively. Thus, BSFLM represents a promising alternative source of protein that could be sustainably used in the poultry industries.

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