Feed Intake, growth and carcass quality of improved genotypes of growing/finishing pigs

1988 ◽  
Vol 1988 ◽  
pp. 135-135
Author(s):  
S.A. Chadd ◽  
D.J.A. Cole
Keyword(s):  
Growth Performance ◽  
Feed Intake ◽  
Carcass Characteristics ◽  
Carcass Quality ◽  
Finishing Pigs ◽  
Limited Information ◽  
Voluntary Feed Intake ◽  
Ad Libitum ◽  
Selection For

There have been a number of reports that voluntary feed intake (VFI) of modern pig genotypes may be the limitation to their growth performance. It has been suggested that selection for leanness (Fowler et al. 1976) and breeding for faster growth may have reduced appetite.In addition there is only limited information about the effect on VFI, performance and carcass characteristics of pigs fed ad libitum to liveweights greater than 100kg. A study was therefore undertaken to compare VFI and energy intake of improved genotypes with predicted intakes based on earlier genotypes (ARC, 1981). The associated effects on performance and carcass characteristics at heavier slaughter weights were also studied.

Response of modern hybrid pigs to dietary energy concentration

1989 ◽  
Vol 1989 ◽  
pp. 80-80
Author(s):  
S.A. Chadd ◽  
D.J.A. Cole
Keyword(s):  
Energy Density ◽  
Growth Performance ◽  
Feed Intake ◽  
Recent Experiment ◽  
Carcass Characteristics ◽  
Energy Concentration ◽  
Dietary Energy ◽  
Constant Energy ◽  
Voluntary Feed Intake ◽  
Ad Libitum

In a recent experiment using the same improved genotype, pigs over the liveweight range 25 to 120 kg were found to have modest voluntary energy intakes (Chadd and Cole, 1988) particularly when compared with former intake prediction equations. It follows that the response of such pigs in terms of voluntary feed intake behaviour when provided with diets differing in energy concentration may have also changed. Diets that are formulated to be low in energy density and therefore bulky in nature are likely to represent more of a limitation to voluntary feed intake than previously. Former experiments designed to examine the pig's ability to adjust feed intake in order to maintain a constant energy intake have produced results varying from complete to incomplete compensation.A study was undertaken to examine the response of a modern genotype in terms of voluntary feed intake, digestible energy (DE) intake, growth performance and associated carcass characteristics, when offered a range of dietary energy concentrations ad libitum and taken to a heavy slaughter weight.

Effects of modified tall oil and vitamin E on growth performance, carcass characteristics, and meat quality of growing-finishing pigs

2002 ◽  
Vol 80 (6) ◽  
pp. 1575-1585 ◽  
Author(s):  
A. T. Waylan ◽  
P. R. O'Quinn ◽  
J. A. Unruh ◽  
J. L. Nelssen ◽  
R. D. Goodband ◽  
...  
Keyword(s):  
Vitamin E ◽  
Growth Performance ◽  
Meat Quality ◽  
Carcass Characteristics ◽  
Finishing Pigs ◽  
Tall Oil

scholarly journals Effect of alfalfa hay on growth performance, carcass characteristics, and meat quality of growing lambs with ad libitum access to total mixed rations

2016 ◽  
Vol 45 (6) ◽  
pp. 302-308 ◽  
Author(s):  
Ibrahim A. Alhidary ◽  
Mutassim M. Abdelrahman ◽  
Abdullah H. Alyemni ◽  
Rifat Ullah Khan ◽  
Mohamed Y. Al-Saiady ◽  
...  
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Carcass Characteristics ◽  
Alfalfa Hay ◽  
Ad Libitum

Effect of expanded diets on growth performance, meat quality and carcass characteristics in finishing pigs

2017 ◽  
Author(s):  
Xin Jian Lei ◽  
Jun Bae ◽  
Ju Lee ◽  
Sang Lee ◽  
In Kim
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Soybean Meal ◽  
Feed Intake ◽  
Carcass Characteristics ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Finishing Pigs ◽  
Feed Conversion ◽  
Daily Gain

The objective of the study was to evaluate the effects of expanded diets on growth performance, meat quality, and carcass characteristics in finishing pigs. A total of 80 finishing pigs [(Landrace × Yorkshire) × Duroc] were randomly allotted to two dietary treatments: 1) unexpanded corn-soybean meal diets; 2) expanded corn-soybean meal diets. Each treatment consisted of ten replicate pens with four pigs (2 gilts and 2 barrows) per pen. There were no differences in daily feed intake and daily gain throughout the experiment (P less than 0.05). However, expanded diets decreased feed conversion ratio compared with unexpanded diets (P less than 0.05). Expanded diets had no effect on carcass characteristics and meat quality with the exception of increased sensory evaluation (color) of meat compared with unexpanded diets (P less than 0.05). In conclusion, expanded diets can improve feed conversion ratio but have no effect on daily gain and daily feed intake and sensory evaluation of meat color.

The effect of dietary ractopamine concentration and duration of feeding on growth performance, carcass characteristics, and meat quality of finishing pigs

2004 ◽  
Vol 82 (11) ◽  
pp. 3245-3253 ◽  
Author(s):  
T. A. Armstrong ◽  
D. J. Ivers ◽  
J. R. Wagner ◽  
D. B. Anderson ◽  
W. C. Weldon ◽  
...  
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Carcass Characteristics ◽  
Finishing Pigs

The effect of age and energy level on the growth potential of Sangsary male lambs in Iran

1996 ◽  
Vol 1996 ◽  
pp. 173-173 ◽  
Author(s):  
Y. Rouzbehan ◽  
A. Shabani ◽  
R. Assadi Moghadam ◽  
A. Nik-khah
Keyword(s):  
Energy Level ◽  
Growth Performance ◽  
Protein Content ◽  
Growth Potential ◽  
Carcass Quality ◽  
Initial Weight ◽  
Sheep Breeds ◽  
Ad Libitum ◽  
Effect Of Age

Recognition of the importance of the native sheep breeds as one of the main source of meat in Iran has led to several studies on their growth performance. There is little information available on the animal potential of Sangsary sheep, a native Iranian breed. The aim of this trial, therefore, was to assess the growth potential and carcass quality of Sangsary male lambs.Forty four entire males, 9 month (m.) old, mean initial weight 26.8 (sd 2.5) kg were used. The two diets, which consisted of concentrate and roughage, had a similar protein content (150 g CP/kg DM) and metabofisable energy of either 10.6 MJ/kg DM (diet A) or 9.2 MJ/kg DM (diet B), were each fed ad libitum to 22 lambs. The animals were group penned. At the start and end of the study, the animals were weighed on two consecutive days.

The feeding value of different classes of wheat for grower finisher pigs

1976 ◽  
Vol 16 (82) ◽  
pp. 668 ◽  
Author(s):  
RH King
Keyword(s):  
Growth Performance ◽  
Feed Intake ◽  
General Purpose ◽  
Lower Growth ◽  
White Wheat ◽  
Weight Range ◽  
Australian Standard ◽  
Feeding Value ◽  
Ad Libitum

A factorial experiment involving two levels of feeding (restricted and ad libitum) and four classes of wheat, these being Australian standard white wheat (ASW), feed wheat damaged by rust (FR), general purpose wheat damaged by weather (GPW) and general purpose wheat damaged by rust (GPR), was carried out to study the effects of different classes of wheats on the growth performance and carcase quality of pigs between 23 and 70 kg liveweight. The digestible energy (DE) contents (+SD) of the wheats, on an air basis were 14.8 (+0.20), 14.8 (+0.20), 14.9 (+0.22) and 14.3 (+0.12) MJ kg-1 for ASW, FR, GPW and GPR, respectively. Wheat class did not affect feed intake of pigs or cause variation in carcase quality. However, pigs fed diets containing GPR or FR wheats did not perform as well as pigs fed diets based on GPW or ASW wheat. This lower growth performance was due to the lower DE content of GPR wheat and the reduced digestibility of protein in both GBR and FR wheats. Pigs fed ad libitum grew faster, had fatter carcases and over the weight range 45 to 70 kg required more feed per unit liveweight gain than pigs fed in restricted amounts.

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