The effect of breed, sire and sex on the quality of carcass sides

Investigation of quality variability of pig carcass was carried out on 1443 fatlings (gilts and barrows). They were progenies of 22 (Farm A) and 12 sires (Farm B), 5 breeds-crossbreds (Swedish Landrace, Large White, Duroc Hampshire, Duroc x Hampshire). Animals were fed with standardized feed mixture semi ad libitum. The quality of carcass sides was determined on the slaughter-line according to Regulation (1985). Investigation included following traits: weight of warm carcass (MTP, kg), meat in carcass sides (KMP, kg and SMP, %), total mass and ratio of leg+shoulder+loin (MFO, kg and UFO, %). Obtained results were processed using several models (Harvey, 1990) which included sire genotype, sire, sex progeny and mass of warm carcass (regression effect). All investigated traits varied under the influence of sire genotype (P<0.01) on farm B. The effect of sire genotype was significant (P<0.01) on KMP and SMP on the Farm A. All traits of carcass quality varied under the influence of sires. Gilts had higher KMP, SMP, MFO and UFO compared to male castrated heads. Difference in Total Breeding Value between best and worst boar was 10.41 (Farm A) and 11.24 index point (Farm B).

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The Effect of Feeding System on the Carcass Quality of Crossbred Lambs with Texel

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis ◽

10.11118/actaun202068010017 ◽

2020 ◽

Vol 68 (1) ◽

pp. 17-24

Author(s):

Angela Cividini ◽

Dušan Terčič ◽

Mojca Simčič

Keyword(s):

Growth Rate ◽

Meat Quality ◽

Carcass Quality ◽

Quality Traits ◽

Feeding System ◽

Ad Libitum ◽

Daily Gain ◽

Effect Of Feeding ◽

Carcass Cuts

The aim of this study was to estimate the effect of feeding system on the growth rate and carcass quality of crossbred Improved Jezersko-Solčava x Texel (JSRT) lambs and to evaluate the effect of sex on these traits. The trial was conducted in nature according to the traditional rearing systems. The trial included 44 crossbred lambs, which were born and reared until the slaughter in three different flocks. In the age of 10 days suckled lambs were offered with ad libitum corresponding diets according to the feeding system. All lambs were slaughtered in seven consecutive days by the same procedure. The effect of feeding system significantly affected daily gain from birth to slaughter, EUROP carcass conformation and shoulder width. Likewise, the effect of sex significantly affected daily gain from birth to slaughter and internal fatness of carcasses. According to carcass cuts the feeding system significantly affected only the proportion of neck and leg. Considering meat quality traits, feeding system had a significant effect on the pH 45 and CIE a* values. In this study, we could speculate that more than the feeding system the growth and the carcass traits as well as meat traits were affected by the amount of the supplement.

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The effects of nutrition on reproductive performance, lactation and carcass quality of once bred gilts

Proceedings of the British Society of Animal Science ◽

10.1017/s175275620059173x ◽

1995 ◽

Vol 1995 ◽

pp. 178-178

Author(s):

A H Stewart ◽

S A Edwards ◽

V R Fowler

Keyword(s):

Sugar Beet ◽

Reproductive Performance ◽

Feed Efficiency ◽

Reproductive Physiology ◽

Sugar Beet Pulp ◽

Energy Sources ◽

Carcass Quality ◽

Beet Pulp ◽

Ad Libitum

The once bred gilt system of production has a number of benefits in terms of feed efficiency and welfare, however the system relies on the production of a quality carcass and acceptable reproductive performance. Previous studies have indicated that welfare might be improved if gilts were ad-libitum fed a diet containing 60% Sugar beet pulp (Stewart et al 1993). There was a suggestion however that reproductive physiology may be put at risk using such a diet. The objective of this experiment was to identify differences in reproductive performance using two different energy sources in gestation and to manipulate nutrition during lactation to study the effect on carcass quality.

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Growth and carcass quality of crossbred pigs sired by Duroc, Landrace and Large White boars

Livestock Production Science ◽

10.1016/0301-6226(88)90036-x ◽

1988 ◽

Vol 18 (3-4) ◽

pp. 275-288 ◽

Cited By ~ 50

Author(s):

P. McGloughlin ◽

P. Allen ◽

P.V. Tarrant ◽

R.L. Joseph ◽

P.B. Lynch ◽

...

Keyword(s):

Carcass Quality ◽

Large White ◽

Crossbred Pigs

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The effects of nutrition on reproductive performance, lactation and carcass quality of once bred gilts

Proceedings of the British Society of Animal Science ◽

10.1017/s0308229600029445 ◽

1995 ◽

Vol 1995 ◽

pp. 178-178

Author(s):

A H Stewart ◽

S A Edwards ◽

V R Fowler

Keyword(s):

Sugar Beet ◽

Reproductive Performance ◽

Feed Efficiency ◽

Reproductive Physiology ◽

Sugar Beet Pulp ◽

Energy Sources ◽

Carcass Quality ◽

Beet Pulp ◽

Ad Libitum

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

Proceedings of the British Society of Animal Science ◽

10.1017/s0308229600031391 ◽

1996 ◽

Vol 1996 ◽

pp. 173-173 ◽

Cited By ~ 1

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.

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Decorticated safflower meal as a protein supplement in diets fed either restrictively or ad libitum to barrow and gilt pigs over 45 kg liveweight

Australian Journal of Experimental Agriculture ◽

10.1071/ea9740012 ◽

1974 ◽

Vol 14 (66) ◽

pp. 12 ◽

Cited By ~ 6

Author(s):

KC Williams ◽

PK O'Rourke

Keyword(s):

Soybean Meal ◽

Average Daily Gain ◽

Conversion Ratio ◽

Feed Conversion Ratio ◽

Feed Conversion ◽

Large White ◽

Protein Supplements ◽

Ad Libitum ◽

Daily Gain

Twenty barrow and twenty gilt Berkshire x Large White pigs were fed barley based diets containing protein supplements of either 13 per cent soybean meal, 9 per cent fishmeal, 14.5 per cent safflower meal plus 0.2 per cent I-lysine mono hydrochloride plus 0.1 per cent methionine or 14.5 per cent safflower meal plus 4.5 per cent fishmeal from 46.4 to 87.0 kg liveweight. All diets were fed individually at a restricted feeding scale. The safflower meal diets were also fed ad libitum. Barrows and gilts fed ad libitum recorded a 65 and 27 per cent improvement respectively in average daily gain and had slightly fatter carcases than those fed comparable diets restrictively. Feed conversion ratio was not significantly affected by level of feeding. Growth and carcase attributes of pigs fed diets restrictively were similar apart from the feed conversion ratio of pigs fed the amino acid supplemented safflower meal diet, which was inferior (P < 0.05) to those fed the soybean meal supplemented diets. Barrows grew faster and produced fatter carcases than gilts, A significant sex x diet interaction occurred from which it was concluded that gilts, but not barrows, could be fed ad libitum without detriment to the quality of the carcase.

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Comparative study on the reproductive performance, fattening performance and carcass quality of Creole and Large White pigs in Guadeloupe

Annales de Zootechnie ◽

10.1051/animres:19810339 ◽

1981 ◽

Vol 30 (3) ◽

pp. 385-386

Author(s):

I. CANOPE ◽

Y. RAYNAUD

Keyword(s):

Comparative Study ◽

Reproductive Performance ◽

Carcass Quality ◽

Large White ◽

Fattening Performance

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Effect of on-farm and pre-slaughter handling of pigs on meat quality

Australian Journal of Agricultural Research ◽

10.1071/a98010 ◽

1998 ◽

Vol 49 (6) ◽

pp. 1021 ◽

Cited By ~ 34

Author(s):

D. N. D'Souza ◽

B. J. Leury ◽

F. R. Dunshea ◽

R. D. Warner

Keyword(s):

Meat Quality ◽

Muscle Glycogen ◽

Drip Loss ◽

Large White ◽

Gland Weight ◽

Adrenal Gland Weight ◽

Significant Difference ◽

Exudative Meat ◽

On Farm

Thirty-six crossbred (Large White × Landrace) boars were used to investigate the effect of positive and negative handling of pigs on-farm over a period of 5 weeks, and the effect of minimal and negative handling just prior to slaughter at the abattoir on the level of stress and meat quality of the carcass. There was no significant difference in adrenal gland weight and plasma cortisol concentration measured at slaughter between pigs negatively and positively handled on-farm. Pigs negatively handled on-farm had lower muscle glycogen 5 min and 40 min post slaughter in the Longissimus thoracis (LT) but muscle paleness and percentage drip loss of the LT were similar compared with pigs positively handled on-farm. Pigs negatively handled at the abattoir had lower muscle glycogen 5 min post slaughter in the LT; however, muscle paleness, percentage drip loss, ultimate pH, and incidence of pale, soft, exudative meat were similar compared with pigs that were minimally handled at the abattoir. This study has shown how the interaction between pigs and humans on-farm can influence the pig’s ‘stress’ response to pre-slaughter handling and, potentially, meat quality.

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

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600017712 ◽

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.

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