Changing the incubation temperature during embryonic myogenesis influences the weight performance and meat quality of male and female broilers

The objective of this study was to examine sex and breed effects on heat shock protein 70 (HSPA1A), blood stress indicators and meat quality attributes of lambs. A hundred male and female lambs from the Dorper (n = 50) and Merino (n = 50) breeds were used in this study. Breed and sex had a significant (p < 0.05) effect on the levels of plasma HSPA1A and lactate; where the Merino lambs had higher levels than Dorper. The female lambs had higher levels of plasma HSPA1A than male lambs. Significant sex and breed interactions (p < 0.05) on the levels of plasma HSPA1A were seen. Females had higher (p < 0.05) pHu than males. Dorper lambs had higher (p < 0.05) pH45, meat lightness, thawing loss and tougher meat the Merino breed. Significant correlations were found amongst plasma stress indicators and meat quality attributes. The results indicate that female lambs were more stressed by the pre-slaughter period than males, while the Merino had a higher physiological stress response compared to the Dorper. However, the Dorper breed produced tougher meat.

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Effect of dietary zinc proteinate supplementation on growth performance, and skin and meat quality of male and female broiler chicks

British Poultry Science ◽

10.1080/00071668.2012.658757 ◽

2012 ◽

Vol 53 (1) ◽

pp. 116-124 ◽

Cited By ~ 10

Author(s):

H.M. Salim ◽

H.R. Lee ◽

C. Jo ◽

S.K. Lee ◽

B.D. Lee

Keyword(s):

Growth Performance ◽

Meat Quality ◽

Broiler Chicks ◽

Dietary Zinc ◽

Male And Female

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Carcass and Meat Quality of Male and Female Water Buffaloes Finished Under an Intensive Production System

Annals of Animal Science ◽

10.1515/aoas-2017-0036 ◽

2018 ◽

Vol 18 (2) ◽

pp. 557-574

Author(s):

Bulent Ekiz ◽

Alper Yilmaz ◽

Hulya Yalcintan ◽

Akin Yakan ◽

Ismail Yilmaz ◽

...

Keyword(s):

Fatty Acids ◽

Meat Quality ◽

Shear Force ◽

Carcass Characteristics ◽

Male And Female ◽

Water Buffaloes ◽

A Value ◽

L Value ◽

Meat Samples

Abstract Carcass and meat quality of male and female Anatolian water buffaloes were investigated using 10 carcasses from each gender. Gender had no influence on carcass characteristics, except warm carcass weight, which was 13% higher in males compared to females. Meat from male water buffaloes had higher ultimate pH and lightness (L*), but lower redness (a*) values than females. Meat samples aged for 21 days had lower values for expressed juice, cooking loss and Warner Bratzler shear force compared with those of 7-day aged ones. Meat samples aged for 21 days had higher L* value at 1 h and 24 h after cutting, a* value at 1 h after cutting compared with those of 7-day aged meat samples. Gender had no effect on meat sensory characteristics. Meat from male water buffaloes had higher proportions of C14:0, C18:3 n-3, C20:2 n-6, C20:3 n-3 and C20:4 n-6 and Σn-3 fatty acids and lower Σn-6/Σn-3 ratio compared with female water buffaloes.

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Effect of sex on meat quality of Spanish lamb breeds (Lacha and Rasa Aragonesa)

Animal Science ◽

10.1017/s1357729800032975 ◽

1998 ◽

Vol 67 (3) ◽

pp. 541-547 ◽

Cited By ~ 39

Author(s):

A. Horcada ◽

M. J. Beriain ◽

A. Purroy ◽

G. Lizaso ◽

J. Chasco

Keyword(s):

Fatty Acids ◽

Fatty Acid ◽

Meat Quality ◽

Iodine Value ◽

Fatty Acid Content ◽

Carcass Weight ◽

Barley Straw ◽

Male And Female ◽

Fat Depots

AbstractThe influence of sex on the meat quality of Lacha (L) and Rasa Aragonesa (RA) lambs was studied. Male and female L lambs were given ewes' milk and were slaughtered at 25 and 24 days of age corresponding to 11·4 and 10·9 kg live weight (LW), respectively. Male and female RA lambs were weaned at 58 days (16·0 kg LW) and then given concentrate and barley straw until slaughter at 89 and 91 days of age, corresponding to 24·5 and 23·1 kg LW, respectively. The parameters measured on the carcasses were: hot carcass weight, cold carcass weight, conformation, colour, firmness and thickness of dorsal fat and colour of muscle rectus abdominis. Parameters measured on longissimus dorsi muscle were: ultimate pH (pHu), instrumental colour (L*, a*, b*), myoglobin concentration, ash, crude protein, fat, moisture and water-holding capacity (WHC). Iodine value and fatty acid composition were studied in the intramuscular (IM), intermuscular (IN) and subcutaneous (SC) fat depots. Females of both breeds had higher amount of IM fat (P < 0·001 and P < 0·05 for L and RA breeds, respectively) and firmer SC fat than males (P < 0·05). There were no differences between sexes in pHu, myoglobin concentration, WHC and the L*, a* and b* colour parameters. No significant differences between sexes were observed in the total saturated fatty acids, total unsaturated fatty acids and in the iodine value in the three fat depots studied in both breeds. However, the females of the breed had significantly higher proportions offatty acids with 15 carbon atoms (pentadecanoic (C15:0)) and with 16 carbon atoms (palmitic (C16:0)and palmitoleic (C16:1)) than the males in the three depots. The females of Rasa Aragonesa breed had a higher proportion of palmitoleic acid (C16:1)in the IM depot (P < 0·001) and of palmitic acid (C16:0)in the SC depot (P < 0·05) than the males. The absence of significant differences in the unsaturated fatty acid content between males and females showed that at the low slaughter weight, sex had no effect on the nature and composition of fat.

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