Effects of environment and breed on growth performance and meat quality of fattening pigs

Meat quality is not only influenced by breed but also rearing environment. The aim of this study was to evaluate the influence of different housing environments on growth performance, carcase traits, meat quality, physiological response pre-slaughter and fatty acid composition in two pig breeds. A total of 120 growing pigs at 60–70 days of age were arranged in a 2 × 2 factorial design with the breeds (Duroc × Landrace × Large White [D × L × LW] and Duroc × Landrace × Min pig [D × L × M]) and environmental enrichment (barren concrete floor or enriched with straw bedding) as factors. Each treatment was performed in triplicate with ten pigs per replicate. The pigs housed in the enriched environment exhibited a higher average daily gain, average daily feed intake, saturated fatty acid percentage and backfat depth than the pigs reared in the barren environment. Plasma cortisol levels were lower and growth hormone higher in enriched compared to barren pens. The D × L × M pigs showed lower cooking loss compared with the D × L × LW pigs. Moreover, the D × L × M pigs exhibited poor growth performance but had a better water-holding capacity. Only carcase traits and meat quality interaction effects were observed. We concluded that an enriched environment can reduce pre- slaughter stress and improve the growth performance of pigs and modulate the fatty acid composition of pork products.

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Effect of a Rumen-Protected Microencapsulated Supplement from Linseed Oil on the Growth Performance, Meat Quality, and Fatty Acid Composition in Korean Native Steers

Animals ◽

10.3390/ani11051253 ◽

2021 ◽

Vol 11 (5) ◽

pp. 1253

Author(s):

Chae-Hyung Sun ◽

Jae-Sung Lee ◽

Jalil Ghassemi Nejad ◽

Won-Seob Kim ◽

Hong-Gu Lee

Keyword(s):

Fatty Acid Composition ◽

Fatty Acid ◽

Growth Performance ◽

Meat Quality ◽

Acid Composition ◽

Linseed Oil ◽

Control Group ◽

Ruminal Fluid

We evaluated the effects of a rumen-protected microencapsulated supplement from linseed oil (MO) on ruminal fluid, growth performance, meat quality, and fatty acid composition in Korean native steers. In an in vitro experiment, ruminal fluid was taken from two fistulated Holstein dairy cows. Different levels of MO (0%, 1%, 2%, 3%, and 4%) were added to the diet. In an in vivo experiment, eight steers (average body weight = 597.1 ± 50.26 kg; average age = 23.8 ± 0.12 months) were assigned to two dietary groups, no MO (control) and MO (3% MO supplementation on a DM basis), for 186 days. The in vitro study revealed that 3% MO is an optimal dose, as there were decreases in the neutral detergent fiber and acid detergent fiber digestibility at 48 h (p < 0.05). The in vivo study showed increases in the feed efficiency and average daily gain in the 3% MO group compared to the control group on days 1 to 90 (p < 0.05). Regarding meat quality, the shear force produced by the longissimus thoracis muscle in steers from the 3% MO group was lower than that produced by the control group (p < 0.05). Interestingly, in terms of the fatty acid profile, higher concentrations of C22:6n3 were demonstrated in the subcutaneous fat and higher concentrations of C18:3n3, C20:3n3, and C20:5n3 were found in the intramuscular fat from steers fed with 3% MO (p < 0.05). Our results indicate that supplementation with 3% MO supplements improves the growth performance and meat quality modulated by the omega-3 fatty acid content of meat in Korean native steers.

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In Vivo Performances, Carcass Traits, and Meat Quality of Pigs Fed Olive Cake Processing Waste

Animals ◽

10.3390/ani9121155 ◽

2019 ◽

Vol 9 (12) ◽

pp. 1155 ◽

Cited By ~ 5

Author(s):

Luigi Liotta ◽

Vincenzo Chiofalo ◽

Vittorio Lo Presti ◽

Biagina Chiofalo

Keyword(s):

Fatty Acid Composition ◽

Fatty Acid ◽

Meat Quality ◽

Acid Composition ◽

Average Daily Gain ◽

Backfat Thickness ◽

Feed Conversion ◽

Olive Cake ◽

Dietary Treatments

The aim of the study was to assess the inclusion of different levels of olive cake in pigs’ diet as a strategy to replace conventional ingredients and to improve meat quality traits. Seventy-two Pietrain pigs, during the growing–finishing period (50–120 kg BW), were fed with three dietary treatments that contained or did not contain olive cake: 0% (Ctrl), 5% (Low), and 10% (High). The trial lasted 90 days. Weekly, individual body weight (BW) and feed intake (FI) were recorded to calculate average daily gain (ADG) and feed conversion ratio (FCR). At slaughter, the dressing percentage was calculated and carcass weight and backfat thickness were measured. On a section of Longissimus thoracis muscle (LT), pH, color, chemical, and fatty acid composition were determined. Fatty acid profile was also determined in backfat. The statistical model included the effects of diet (Ctrl, Low, and High). The inclusion of 5% of olive cake in the diet improved significantly (p < 0.05) BW and FCR. Both levels of inclusion (5% and 10%) significantly reduced (p < 0.05) backfat thickness and intramuscular fat and modified their fatty acid composition, increasing (p < 0.05) the concentration of MUFA and PUFA and improving (p < 0.05) quality indices. Results suggest that olive cake did not negatively affect the productive performances.

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Inclusion of the aerial part and condensed tannin extract from Cistus ladanifer L. in lamb diets – Effects on growth performance, carcass and meat quality and fatty acid composition of intramuscular and subcutaneous fat

Meat Science ◽

10.1016/j.meatsci.2019.107945 ◽

2020 ◽

Vol 160 ◽

pp. 107945 ◽

Cited By ~ 4

Author(s):

Olinda Guerreiro ◽

Susana P. Alves ◽

David Soldado ◽

Liliana Cachucho ◽

João M. Almeida ◽

...

Keyword(s):

Fatty Acid Composition ◽

Fatty Acid ◽

Growth Performance ◽

Meat Quality ◽

Acid Composition ◽

Aerial Part ◽

Condensed Tannin ◽

Subcutaneous Fat ◽

Cistus Ladanifer ◽

Tannin Extract

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Effects of Long-Term Feeding of Treated Rapeseed Meal on Growth Performance, Blood Mineral Profile and Fatty Acid Composition of Back Fat in Pigs

Folia Veterinaria ◽

10.2478/fv-2020-0035 ◽

2020 ◽

Vol 64 (4) ◽

pp. 37-43

Author(s):

L. Bujňák ◽

P. Naď ◽

M. Skalická ◽

S. Marcinčák

Keyword(s):

Fatty Acid Composition ◽

Fatty Acid ◽

Growth Performance ◽

Acid Composition ◽

Average Daily Gain ◽

Live Weight ◽

Rapeseed Meal ◽

Negative Effects ◽

Mineral Profile ◽

Dietary Treatments

AbstractThis experiment was conducted to evaluate the effects of replacing soybean meal (SBM) with treated rape-seed meal (tRSM) on the growth performance, blood mineral levels and fatty acid composition of back fat in growing-finishing pigs. A total of 12 crossbred pigs (Slovakian White × Landrace) with an initial live weight of 40.82 ± 2.69 kg were divided into two dietary treatments. The experimental period lasted 84 days; 38 days in the growing period and 46 days in the finishing period. The dietary treatments were as follows: control, a SBM-based diet (growing and finishing), and experimental, a treated RSM-based diet (growing and finishing). The rapeseed meal was treated with a product that neutralizes the negative physiological effects of anti-nutritive glucosinolates contained in rapeseed products for livestock feeding. Our analysis showed minor, no significant negative effects of tRSM on live weight, average daily gain and feed conversion ratio. Replacing SBM with tRSM had no significant effects on the proportion of the total saturated, monounsaturated and polyunsaturated fatty acids of back fat samples, as well as concentrations of analysed serum minerals except zinc level. In conclusion, the inclusion of 25 % and 18 % of treated RSM in growing and finishing pig diets had no negative effects on the growth performance, blood mineral profile or fatty acid composition of back fat.

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