Impact of nursery feeding program on subsequent growth performance, carcass quality, meat quality, and physical and chemical body composition of growing-finishing pigs1

2014 ◽  
Vol 92 (3) ◽  
pp. 1044-1054 ◽  
Author(s):  
L. D. Skinner ◽  
C. L. Levesque ◽  
D. Wey ◽  
M. Rudar ◽  
J. Zhu ◽  
...  
1995 ◽  
Vol 1995 ◽  
pp. 90-90
Author(s):  
M. I. Mustafa ◽  
G. M. Webster

There is great variation in lamb carcass quality due to there being many breeds and crosses involved in lamb production. Breed of lamb appears to influence the pattern of development of the important carcass components, and thus the carcass quality, when comparison is made at equal weights. Plane of nutrition may also affect the growth rate, carcass composition and eating quality of lambs of the same genotype. It was planned to study the effect of both breed and diet on growth performance, carcass and meat quality characteristics by feeding two different diets to the lambs of two different breeds similarly managed from birth to slaughter.


2009 ◽  
Vol 2009 ◽  
pp. 33-33
Author(s):  
A Taylor ◽  
S Jagger ◽  
P Toplis ◽  
I Wellock ◽  
H M Miller

Crossbreeding is common practice in commercial pig production as one way to increase lean growth and improve meat quality (Visscher et al., 2000). Reducing disease is another way to help improve growth rate in pigs. Porcine circovirus type 2 (PCV2) has devastated the pig industry in recent years. PCV2 infection increases mortality and reduces growth rate as it acts as an immunosuppressant thereby making pigs more susceptible to co-infections (Kixmöller et al 2008). Keeping disease at low levels has been achieved by improving husbandry standards, biosecurity, minimising presence of other pathogens and use of antibiotics. However vaccines against PVC2 are now available. The aim of this study was to investigate the effects of sire genotype and PCV2 vaccine on growth performance and body composition of pigs.


2016 ◽  
Vol 219 ◽  
pp. 102-110 ◽  
Author(s):  
Cláudio Teixeira Lombardi ◽  
Carlos Augusto de Alencar Fontes ◽  
Tiago Cunha Rocha ◽  
Elizabeth Fonsêca Processi ◽  
Laila Cecília Ramos Bendia ◽  
...  

2019 ◽  
Vol 3 (2) ◽  
pp. 641-653
Author(s):  
Shelby M Curry ◽  
Laia Blavi ◽  
Julian Wiseman ◽  
Hans H Stein

Abstract Two experiments were conducted to compare the standardized ileal digestibility (SID) of AA by growing pigs in European distillers dried grains with solubles (DDGS) produced from wheat, maize, or wheat–maize mixtures and to test the effect of increasing the inclusion levels of wheat DDGS on growth performance of growing-finishing pigs fed diets balanced for NE and SID Lys. In Exp. 1, 12 barrows (initial BW: 23.0 ± 2.2 kg) were surgically equipped with a T-cannula in the distal ileum and randomly allotted to a replicated 6 × 6 Latin square design with six diets and six periods. Five sources of European DDGS were used: wheat DDGS from 2011, wheat DDGS from 2012, wheat-80 DDGS (80% wheat and 20% maize), wheat-70 DDGS (70% wheat and 30% maize), and maize DDGS. Each diet contained one source of DDGS as the sole source of AA and an N-free diet was used to determine basal endogenous losses of AA. Results indicated that the SID of CP was greater (P < 0.05) in maize DDGS compared with wheat DDGS from 2011, wheat DDGS from 2012, and wheat-70 DDGS. The SID of all indispensable AA except Trp was also greater (P < 0.05) in maize DDGS compared with all other DDGS sources used in this experiment. For Trp, the SID in wheat-80 DDGS, wheat DDGS from 2011, and wheat DDGS from 2012 were not different from maize DDGS, but were greater (P < 0.05) than in wheat-70 DDGS. The SID for all indispensable AA except Ile and Trp in wheat-70 DDGS were not different from the values calculated for wheat DDGS from 2011 and wheat DDGS from 2012, and no differences between SID values for AA in wheat DDGS from 2011 and wheat DDGS from 2012 were observed. In Exp. 2, 36 growing pigs (initial BW: 38.3 ± 1.97 kg) were randomly allotted to one of four dietary treatments (one pig/pen and nine replicate pigs/treatment) in a 2-phase feeding program (35 to 65, and 35 to 105 kg BW). The four dietary treatments included diets containing 0%, 10%, 20%, or 30% wheat DDGS. Results indicated that there was no effect of wheat DDGS on pig growth performance or carcass quality. However, addition of wheat DDGS increased linearly (P < 0.015) the indole concentration in the carcasses of the pigs. In conclusion, the SID of AA in maize DDGS produced in Europe is greater than in European wheat DDGS and DDGS produced from mixtures of wheat and maize, but inclusion of 30% wheat DDGS in diets fed to growing-finishing pigs did not affect growth performance or carcass quality.


2013 ◽  
Vol 53 (1) ◽  
pp. 52 ◽  
Author(s):  
K. L. Moore ◽  
B. P. Mullan ◽  
J. C. Kim

A completely randomised block experiment was conducted using 216 female pigs (Large White × Landrace, six pigs/pen and 12 replicate pens/treatment), at an average liveweight (LW) of 22.6 kg ± 0.56 (mean ± s.e.m.), to examine the effect of feeding strategies on performance during the grower–finisher phase. Pigs were blocked and randomly allocated to the following treatments on the basis of initial LW: (1) phase-feeding: diets changed when the average LW of pigs in the pen reached 20, 50 or 80 kg; (2) blend: diets changed weekly to meet the requirements of the average LW of pigs in the pen and; (3) single: the same diet fed throughout (formulated to meet the requirements of the pig at 60 kg LW). The experimental diets were fed from 22 to 102 kg LW. Between 68 and 98 days of age, pigs fed the single diet grew more slowly (P < 0.001) due to poorer feed conversion (P < 0.001) than did pigs fed the phase-feeding or blend diets. However, between 99 and 133 days of age, pigs fed the single diet utilised feed more efficiently (P < 0.001) than did pigs fed the phase-feeding and blend diets. Therefore, there was no significant effect of the feeding strategies on overall growth performance (P > 0.05) and there was no significant difference in carcass quality (P > 0.05) among treatment groups. However, it was 3.74% and 3.51% cheaper to use the blend- and single-diet feeding strategies, respectively, than it was to use a phase-feeding program (P = 0.002). The present experiment has shown that blend-feeding could be a strategy to reduce the cost of production. Feeding a single diet appears to have merit and may have appeal for certain circumstances; however, it would need to be investigated further before being implemented commercially.


2021 ◽  
Vol 48 (1) ◽  
pp. 142-151
Author(s):  
L. T. Egbeyale ◽  
O. Uza ◽  
A. A. Ayoola ◽  
R. A. Sobayo ◽  
O. O. Adeleye ◽  
...  

This study was conducted to determine the effect of neem leaf infusion on growth parameters, carcass characteristics and meat quality of broiler chicken. One hundred and sixty, seven days old broiler chicks of cob strain were used for the experiment which was laid out in a completely randomized design (CRD). Each group was sub-divided into four replicates of 10 birds. The chicks in group 1 served as control and antibiotics were administered to them while 0.1, 0.2 and 0.3% concentration of neem leaf infusion were administered to bird on groups 2, 3 and 4, respectively. The period of experiment was six weeks. The birds were fed ad libitum. One bird close to average final weight was selected randomly in each replicate and was slaughtered at 42nd day of the experiment. Meat samples from breast muscle of the bird were subjected to cooking weight loss, refrigeration weight loss and sensory evaluation. The data obtained were subjected to one-way Analysis of Variance. Results revealed that there were no significant (p>0.05) effects of neem leaf infusion on weight gain and feed conversion ratio while water intake was influenced (p<0.05) at the starter phase across the treatment groups. It was only feed intake that was influenced (P<0.05) by the Neem leaf infusion (NLI) at the finisher phase. The heart was the only parameter that was significantly (p<0.05) affected among the carcass parameters. The cooking loss increased (P<0.05) with higher concentration of the infusion while refrigeration weight loss percentages were similar (P>0.05) across the treatments. The result on Sensory evaluation showed that only colour, tenderness and overall flavour were significantly (P<0.05) influenced. The study concluded that administration of aqueous Neem (Azadirachta indica) leaf infusion in drinking water of broiler chicken as alternative to antibiotics did not pose any adverse threat on the performance and meat quality of broiler chicken.     Cette étude a été menée pour déterminer l'effet de l'infusion de feuilles de neem sur les paramètres de croissance, les caractéristiques de la carcasse et la qualité de la viande du Effect of neem (Azadirachta indica) leaves infusion on growth performance and carcass quality of broiler chickens  poulet de gril. Cent soixante poussins de poulet à griller de sept jours de souche d'épi ont été utilisés pour l'expérience qui a été présenté dans une conception complètement randomisée (le 'CRD'). Chaque groupe a été subdivisé en quatre répliques de 10 oiseaux. Les poussins du groupe 1 ont servi de contrôle et des antibiotiques leur ont été administrés tandis que 0,1, 0,2 et 0,3 % de concentration d'infusion de feuilles de neem ont été administrés à l'oiseau sur les groupes 2, 3 et 4, respectivement. La période d'expérience était de six semaines. Les oiseaux ont été nourris ad libitum. Un oiseau dont le poids final est proche de la moyenne a été sélectionné au hasard dans chaque réplique et a été abattu au 42e jour de l'expérience. Des échantillons de viande prélevés sur le muscle mammaire de l'oiseau ont été soumis à la perte de poids de la cuisson, à la perte de poids de réfrigération et à l'évaluation sensorielle. Les données obtenues ont fait l'objet d'une analyse à sens unique de la variance. Les résultats ont révélé qu'il n'y avait pas d'effets significatifs (p>0,05) de l'infusion de feuilles de neem sur le gain de poids et le rapport de conversion des aliments pour animaux, tandis que la prise d'eau a été influencée (p<0,05) à la phase de démarrage dans tous les groupes de traitement. Ce n'est que la prise d'aliments qui a été influencée (P<0,05) par l'infusion de feuilles neem (NLI) à la phase finale. Le cœur était le seul paramètre qui était significativement (p<0,05) affecté parmi les paramètres de la carcasse. La perte de cuisson a augmenté (P<0,05) avec une concentration plus élevée de l'infusion tandis que les pourcentages de perte de poids de réfrigération étaient similaires (P>0,05) à travers les traitements. Le résultat de l'évaluation sensorielle a montré que seules la couleur, la tendresse et la saveur globale étaient significativement influencées (P<0,05). L'étude a conclu que l'administration de feuilles de neem (Azadirachta indica) dans l'eau potable du poulet de gril comme alternatif aux antibiotiques ne posait aucune menace négative sur la performance et la qualité de la viande du poulet de gril.


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