Studies on Belgian Pietrain pigs 2. A comparison of growth and carcass characteristics of Pietrain used in three breed crosses with Landrace, Large White and Hampshire breeds

1972 ◽  
Vol 15 (1) ◽  
pp. 11-19 ◽  
Author(s):  
M. K. Curran ◽  
I. J. Lean ◽  
J. E. Duckworth ◽  
W. Holmes
Keyword(s):  
Weight Gain ◽  
Meat Quality ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Feed Consumption ◽  
Unit Weight ◽  
Large White ◽  
Lean Meat ◽  
Live Weight Gain ◽  
Breed Crosses

SUMMARY1. The growth, feed consumption per unit weight gain, carcass characteristics and some aspects of meat quality were studied in two trials with crosses derived from Landrace (L), Pietrain (P), Hampshire (H) and Large White (LW) breeds.2. In Trial 1, 96 pigs of both pure Landrace and LW(× (L♀ × P♂)♂ origin were studied up to slaughter weights of 64 and 91 kg live weight. In Trial 2, Landrace, LW♀ × (L♀ × P♂)♂ and LW ♂x (P♀x L♂)♂, (H♀ × P♂ × L♂ and (H♀ × P♂)♀ × LW♂ pigs were compared up to 91 kg live weight using 48 pigs of each type.3. All crossbred types showed better economy of production than Landrace when assessed by live-weight gain and feed consumption per unit weight gain. Their carcasses contained greater quantities of lean meat and similar quantities of rind, bone and fat than Landrace at comparable weights, but they exhibited a variable tendency to poorer meat quality. LW × (L × P) and LW × (P × L) carcasses at 91 kg live weight were shorter than Landrace; 4% and 14% of pigs in trials 1 and 2 respectively were less than the currently acceptable length of bacon pigs (775 mm). (H × P) × LW and (H×P)×L carcasses at this weight were much shorter; 34% and 38% respectively were less than 775 mm.

scholarly journals Comparison of a Plantain-Chicory Mixture with a Grass Permanent Sward on the Live Weight Gain and Meat Quality of Lambs

Animals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2275
Author(s):  
Romina Rodríguez ◽  
Oscar Balocchi ◽  
Daniel Alomar ◽  
Rodrigo Morales
Keyword(s):  
Climate Change ◽  
Weight Gain ◽  
Meat Quality ◽  
Production Systems ◽  
Live Weight ◽  
Temperate Grasslands ◽  
Live Weight Gain ◽  
Final Weight ◽  
Sheep Production

Under the predicted conditions of climate change, the productivity of temperate grasslands may be affected by drought stress, especially in spring and summer. In this scenario, water-deficit-tolerant species such as plantain and chicory are interesting alternatives for use in sheep production systems. In this study, we compared a mixture of plantain and chicory herbage (PCH) with a grass-based permanent sward (GBS) on the weight gain and meat quality of lambs finished on these grasslands. Fifteen weaned lambs (31.3 kg and 4 months of age) were assigned to each treatment for seven weeks in late spring and live weight gain (LWG), carcass and meat quality were evaluated. There was a tendency (p = 0.09) in final weight (40.3 ± 0.8 kg) and live weight gain (173 ± 10 g/d) to be higher in PCH compared to GBS. Carcass weight, dressing percentage and meat quality in terms of pH, color and tenderness did not differ (p > 0.05) and were considered to be of good quality. We concluded that both swards result in comparable lamb performance and good meat quality.

Meat production from pigs which have farrowed. 2. Carcass characteristics

1975 ◽  
Vol 20 (1) ◽  
pp. 123-131 ◽  
Author(s):  
P. H. Brooks ◽  
D. J. A. Cole ◽  
W. J. N. Jennings
Keyword(s):  
Young Adult ◽  
Meat Quality ◽  
Adult Female ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Control Group ◽  
Meat Production ◽  
Large White ◽  
Treatment Groups ◽  
Significant Difference

SUMMARYThe carcass characteristics of young adult female pigs (gilts) slaughtered after weaning their first litters have been investigated using three groups of 19 Landrace × (Landrace×Large White) gilts. In two treatment groups gilts were mated at their pubertal oestrus and suckled their piglets for 5 to 11 and 35 to 42 days respectively. These gilts were slaughtered on average 10 days after weaning. A third control group consisted of unmated gilts slaughtered at 118 kg live weight.There was no significant difference in the killing-out percentage for the three groups. The carcasses of the gilts which farrowed contained significantly less fat (P<0·001) than those of the unmated controls. The carcasses of the farrowed gilts had significantly lighter middle sections (P<0·001) and significantly heavier shoulders (P<0·001) than the controls.Despite the variations in tissue yield and distribution, the yield of prime joints for the gilts which had farrowed was only 0·62 percentage units less than that of the controls.No commercially significant variations between groups in meat quality were observed.

The effect of plane of nutrition during calfhood on the subsequent performance of Hereford × Ayrshire steers

1969 ◽  
Vol 11 (2) ◽  
pp. 155-160 ◽  
Author(s):  
P. J. Broadbent ◽  
C. Ball ◽  
T. L. Dodsworth
Keyword(s):  
Weight Gain ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Restricted Feeding ◽  
Live Weight Gain ◽  
Subsequent Performance ◽  
Liquid Feed ◽  
Carcass Conformation

SUMMARYThe growth and carcass characteristics of autumn-born Hereford × Ayrshire castrated male calves reared on two planes of nutrition have been studied. Restricted feeding for 12 weeks after weaning from liquid feed to the time the calves were turned out to grass created a difference of 52·0 lb per head in live-weight gain and 15·2 lb of this difference persisted at slaughter. There were small differences in carcass conformation and composition.

The effect of daylength on the growth of lambs. 5. Skeletal long photoperiod

1984 ◽  
Vol 38 (3) ◽  
pp. 455-461 ◽  
Author(s):  
B. R. Brinklow ◽  
R. Jones ◽  
J. M. Forbes
Keyword(s):  
Weight Gain ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Blood Levels ◽  
Plasma Prolactin ◽  
Live Weight Gain ◽  
The Third ◽  
Weight Gains ◽  
Gut Fill ◽  
Long Photoperiod

ABSTRACTFour experiments were carried out, with a total of 98 Suffolk-cross lambs fed at a restricted level, to study the effects of skeletal long photoperiod (7 h light: 10 h dark: 1 h light: 6 h dark) compared with short photoperiod (8 h light: 16 h dark) on growth and blood levels of hormones. The experiments started when the lambs were from 2 to 10 months of age and continued for 9 to 14 weeks.In the first experiment, the weight gains of both females and castrated males were significantly increased by skeletal long photoperiod. Plasma prolactin was increased and cortisol decreased by skeletal long photoperiod.Experiment 2 included females and castrated males; prolactin was stimulated by skeletal long photoperiod and there was a significant positive correlation between live-weight gain and prolactin.The weight gains and carcass characteristics of the female lambs used in the third experiment were not affected by photoperiod. Live-weight gain was negatively related to plasma cortisol.In experiment 4, there were 12 intact males and 12 castrated males. The intact animals grew significantly faster; skeletal long photoperiod caused a depression in testosterone levels in plasma even though it tended to increase live-weight gain.When the data from all four experiments were pooled, it was found that skeletal long photoperiod gave a significant increase in live-weight gain in animals whose pineal gland was intact (40 per photoperiod; 138 v. 113 g/day); there was no effect on gut fill at slaughter and the increase in carcass weight (0·5 kg) was not significant.

scholarly journals MORPHO-BIOCHEMICAL AND PRODUCTIVE INDICATORS OF DUCK-BROILERS WHEN USING PROBIOTIC "LACTOBIFADOL"

2021 ◽  
Vol 248 (4) ◽  
pp. 254-260
Author(s):  
A.F. Khabirov ◽  
◽  
Keyword(s):  
Weight Gain ◽  
Live Weight ◽  
Feed Consumption ◽  
Control Group ◽  
Live Weight Gain ◽  
Positive Effect ◽  
Experimental Group ◽  
Average Consumption

The reaction of the organism of broiler ducklings to the introduction of the probiotic additive "Lactobifadol" into the organism when reared up to 7 weeks of age was investigated. A positive effect was achieved to increase the live weight of the experimental poultry by 5.0 % (p <0.5), the average feed consumption per 1 kg of live weight gain in the group of broiler ducklings fed with Lactobifadol feed was 4.7 % less when compared to intact poultry. The dynamics of feed consumption per 1 kg of live weight gain in the first three weeks of rearing was descending, and from 4 weeks of age until the end of rearing, fodder consumption increased significantly. For 6 weeks of growing, the average consumption of compound feed per head per day in the control group of broiler ducklings was 157.5 g, in the experimental group – 158.5 g per 1 bird/day. The inclusion of "Lactobifadol" in the diet to a certain extent stimulates the processes of erythrocytopoiesis, providing, within the physiological norm, an increase in the level of hemoglobin and the number of leukocytes.

scholarly journals Determination of the Optimum Fattening Period and Fattening Performance Slaughter and Carcass Characteristics of Hair Goat and Saanen × Hair Goat (G1) Crossbred Kids Fattened in Different Systems

2021 ◽  
Vol 9 (12) ◽  
pp. 2197-2205
Author(s):  
Hacer Tüfekci ◽  
Mustafa Olfaz
Keyword(s):  
Weight Gain ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Value Analysis ◽  
Live Weight Gain ◽  
Marginal Value ◽  
Fattening Performance ◽  
Weight Gains ◽  
Fattening Period

This research was carried out to investigate the fattening performance and slaughter and carcass characteristics of Hair goat and Saanen × Hair goat (G1) crossbred kids in different fattening systems. Thirty Hair goats and 30 Saanen × Hair goat (G1) crossbred singleton male kids 2.5-3 months old and weaned were used. The kids were fattened in three different systems: intensive, semi-intensive, and extensive. Marginal value analysis was applied to determine the optimum feeding periods of the kids. In order to determine the slaughter and carcass characteristics, all the kids fattened were taken to slaughter after determining their live weight at the end of the fattening. Live weight gains after the intensive, semi-intensive, and extensive fattening were 17.83 kg, 19.39 kg, and 18.29 kg in the Hair goat kids and 17.88 kg, 18.24 kg, and 17.32 kg in the Saanen × Hair goat (G1) crossbred kids, respectively. In the same order, the average concentrate feed consumed by kids for 1 kg live weight gain was 7.55 kg, 7.28 kg, 7.00 kg and 7.07 kg. Hot carcass weights after the intensive, semi-intensive, and extensive fattening were 13.58, 14.06, and 13.02 kg in the Hair goat kids and 14.21, 15.03, and 14.06 kg in the Saanen × Hair goat (G1) crossbred kids. The Saanen × Hair goat (G1) crossbred goats increased more in live weight than the Hair goat kids and the semi-intensive fattened goats increased more in live weight than the intensive and extensive fed goats. Moreover, the optimum fattening times generally varied between the groups, but not between genotypes within the group.

scholarly journals Effects of age on intake, growth, nutrient utilization and carcass characteristics of castrated native sheep

1970 ◽  
Vol 27 (2) ◽  
pp. 62-73 ◽  
Author(s):  
N Sultana ◽  
SMJ Hossain ◽  
SA Chowdhury ◽  
MR Hassan ◽  
M Ershaduzzaman
Keyword(s):  
Growth Rate ◽  
Weight Gain ◽  
Early Stage ◽  
Body Weight Gain ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Nutrient Utilization ◽  
Daily Weight Gain ◽  
Live Weight Gain ◽  
Native Sheep

Twenty four castrated native sheep were grouped (six/group) into four: T1 >3 to ≤ 6; T2 > 6 to ≤ 9; T3 >9 to ≤12 and T4 >12 to ≤ 15 months. Through out the 63 days of experimental period, animals were offered ad libitum urea (3%), molasses (15%) and straw (82%) as a basal diet with concentrate mixture [14% crude protein (CP) & 11.5 MJ metabolizing energy (ME) per kg Dry Matter (DM)] @ 1% of live weight. Five days metabolic trial was conducted towards the end of the feeding trial. Besides, fortnightly live weight change, daily nutrient intake, carcass yield and carcass characteristics were studied. Daily weight gain decreased (P<0.05) with the increasing in age and the growth rate were 79, 63, 55 and 44g/day for T1, T2, T3 and T4, respectively. Higher growth rate in T1 was due to animal's inherent self-accelerated phase of growth. Feed conversion ratio (FCR; kg feed/kg live weight gain) was significantly (P<0.001) better in T1 (9.2) followed by T2 (13.8), T3 (17.7) and T4 (21.7). Cost per kg of carcass production was lower in T1 (Taka: 239), but the production cost increased in T2 (Taka: 357), T3 (Taka: 440) and T4 (Taka: 515). DM intake (g/kg W0.75) decreased with the increase in age and weight. For each gram increased in live weight gain, it required 7.7 kJ ME and animals achieved zero live weight gain (maintenance energy level) at 377 kJ/kg W0.75/d ME intake. Slaughtered weight, warmed carcass weight and dressing yield (%) of native sheep increased with advancement of age. Dressing yields were 48.5, 49, 51.4 and 55.5% for T1, T2, T3 and T4, respectively. Fat percent increased with increasing age and body fat as percent of live weight were 5.6, 7.7 15.5 and 20.6, respectively for the T1, T2, T3 and T4. As a part of total carcass, the proportional yield of tender loin and hind leg chump, most valued retail cut, decreased with the increased animal age. In the present trial, body weight gain at early stage (6-8 months of age) of life was more economical than at the later stage of life. It is suggests that the optimum market/slaughter age for native sheep maintained under these feeding and management would be at around eight months of age. DOI: 10.3329/bvet.v27i2.7556 Bangl. vet. 2010. Vol. 27, No. 2, 62-73

Estimation of optimum slaughter age in broiler chicks

2016 ◽  
Author(s):  
Hasan Cicek ◽  
Murat Tandogan
Keyword(s):  
Weight Gain ◽  
Live Weight ◽  
Decisive Role ◽  
Feed Consumption ◽  
Broiler Chicks ◽  
Mathematical Function ◽  
Net Income ◽  
Broiler Meat ◽  
Live Weight Gain ◽  
Slaughter Age

In this study, optimum slaughter age of the commercial broilers was estimated regarding maximum net income. Study materials were average target performance (live weight gain and feed consumption) of Cobb 500 and Ross 308 commercial hybrids, prices of feed, chicks and broiler meat. The optimum slaughter age was estimated by a mathematical function (y = f (x) = a+bx-cx2) that reflects the quadratic (parabolic) relationship. According to this function, the optimum slaughter age was calculated as 5.62 weeks (39.34 days). As a result, it can be said that genetic improvement positively affects the correlation between live weight gain and feed consumption of broilers. However, prices of feed, chicks, and broiler meat have more decisive role on slaughter age.

Comparison of Fattening, Slaughtering and Carcass Characteristics of Different Genotype Lambs Grown in Turkey

2020 ◽  
Author(s):  
Engin Yaralı
Keyword(s):  
Weight Gain ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Daily Weight Gain ◽  
Carcass Yield ◽  
Live Weight Gain ◽  
Fattening Performance ◽  
Animal Material ◽  
Dressing Percentage ◽  
Fattening Period

In this study, it was aimed to determine the fattening performance, slaughter and carcass characteristics of lambs of Eþme Kývýrcýðý (EKIV), Bursa Kývýrcýðý (BKIV), Çine Çaparý (CC) and Karya (KAR) sheeps. A total of 37 male lambs at the age of 3.5 months formed the animal material. Fattening period is 56 days. During slaughtering, head, feet, skin, liver, hot carcass weights were determined and hot carcass yield was calculated. Each carcass was cut out into 7 parts. The overall average of daily weight gain was 144.82 g. While the highest daily live weight gain was observed in the KAR, the CC had the lowest value. The total share of the rump, shoulders, back and arms are 57.65%, 66.85%, 65.80% and 67.12% for CC, EKIV, KAR and BKIV, respectively. The effect of the genotype on all the characteristics other than cooling loss is important. In terms of dressing percentage value, the ranking was CC, BKIV, KAR and EKIV from the highest to the lowest.

The influence of dietary concentration of calcium and phosphorus on their retention in the body of the growing pig

1969 ◽  
Vol 73 (2) ◽  
pp. 189-196 ◽  
Author(s):  
A. J. Mudd ◽  
W. C. Smith ◽  
D. G. Armstrong
Keyword(s):  
Weight Gain ◽  
Carcass Characteristics ◽  
Live Weight ◽  
The Body ◽  
Whole Body ◽  
Or Efficiency ◽  
Live Weight Gain ◽  
A Value ◽  
Dietary Concentration ◽  
Growing Pig

SUMMARYThree gilts and three castrated males weighing 23 kg live weight were given four semi-synthetic diets containing increasing amounts of Ca and P. The Ca and P contents (% dry basis) and Ca:P ratios for the four diets were A, 0·30, 0·38, 1:1·27; B, 0·58, 0·68, 1:1·17; C, 0·94, 1·13, l:l·20; D, 1·16, 1·47, 1:1·27. Each animal was slaughtered at 41 kg live weight and the whole body contents of Ca and P determined. Six pigs were slaughtered at 23 kg live weight and their bodies also analysed for Ca and P contents. Dietary concentration of Ca and P did not influence rate or efficiency of live weight gain nor carcass characteristics. Net retention of Ca and P increased with increasing dietary concentration of these elements. Analyses of isolated femurs suggested that optimal mineralization of the bone was associated with a net retention of 8·2 g Ca/kg live weight gain. The data were used to calculate a value of 32·9 mg/kg live weight/day for the endogenous loss of Ca in pigs of 23–41 kg body weight. The values have been used to compute a mineral requirement of dietary calcium which is in excellent agreement with that derived from estimates in the literature.

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