Meat Yield Characteristics Research Articles

Effects of Probiotics Supplementation on Growth Performance and Certain Haemato-biochemical Parameters in Broiler Chickens

The study was carried out to know the effects of probiotics (Protexin® Boost) supplementation on growth performances and haemato-biochemical parameters of "Shaver Star Bro" broiler chickens during the period from September to October 2003. A total of 20, day-old broiler chickens were randomly assigned into four equal groups (n = 5) as A, B, C and D. Group A was considered as control fed with commercial ration while group B, C and D were fed with commercial ration with the addition of 1 g, 2 g and 3 g probiotics / 10 litres drinking water respectively up to 35 days of age. The results showed that the body weight gains corresponding to the different treatments were differed significantly (p < 0.01) at the 1st, 2nd, 3rd, 4th and 5th weeks of age. The meat yield characteristics corresponding to the different treatments did not differ significantly (p > 0.05) whereas bursa weight differed significantly (p < 0.05) among the different groups. The mean values of Hb, PCV and ESR corresponding to the different treatments were significantly (p < 0.01) differ. Triglycerides, HDL, LDL, SGPT and SGOT values corresponding to the different treatments were also differed significantly (p < 0.01). The findings suggest that supplementation of probiotics has significant effects on live weight gain and haemato-biochemical parameters of broiler chickens. Key words: Probiotics; effects; growth; haemato-biochemical parameters; broiler chickens doi: 10.3329/bjvm.v2i1.1933 Bangl. J. Vet. Med. (2004). 2 (1) : 39-43

Effect of supplemented dietary protein on certain haematological values and meat yield characteristics of broiler birds

The effect of different levels of supplemented dietary protein on body weight, certain haematological values and meat yield characteristics in 20 "Shaver Star Bro" broilers was studied during the period from 02 March to 12 April 2002. The broilers were randomly assigned to four equal groups (A to D) each consisting of 5 birds. Group A was considered as control, fed only with commercial ration and other three groups were treated with extra dietary protein supplement @ 5%, 10% and 15% as group B, C and D respectively. Increased body weight was recorded in group B and the body weight decreases as the level of protein increased from 5% to 10% and 15% and the decrease was linear. No differences in haematological values were observed among the groups but the TEC varied significantly (p < 0.05). The mean weight of breast meat, drum stick meat varied significantly (p < 0.01). The shank weight varied significantly (p < 0.05) but there was no significant difference among the mean weight of thigh meat and wing meat corresponding to the different levels of supplemented dietary protein. It can be concluded that 5% supplemented dietary protein with commercial ration gives better result in respect to body weight gain, haematological values and meat yield characteristics.Key words: dietary protein; haematological values; meat yield; broiler birdsdoi: 10.3329/bjvm.v2i2.2543Bangl. J. Vet. Med. (2004). 2 (2): 121-123

Meat Production Potential Of Different Cross-Bred Ducklings

A study was conducted to determine the meat production potential of Pekin (P) x Pekin (P), P x Desi (D) and P x Jinding (J) ducklings up to 8 weeks of age. 54 day old ducklings were randomly allocated to 3 genotypic treatments having 3 replications in each genotype. One duckling from each replication was dissected to determine the meat yield. The initial and final live weight was found highest (P<0.01) in P X P, followed by those of P X D and P X J ducklings respectively. Feed conversion was poor in P X J, better in P X P and best in P X D (P<0.01). However, feed conversion for all genotypes decreased with the advance of age. At all ages except 1st week, better feed utilization was observed in P X D crossbred than that in P X P and P X J. Higher breast meat was observed in P X P (P<0.05) than in P X D and P X J. Thigh meat was found higher (P<0.05) in P X P and P X D than that in P X J. Considering the growth performance (growth rate and feed utilization) and meat yield characteristics, it may be concluded that crossing of Pekin with local ducks might produce a suitable genotype to improve meat production potential of duck to reared under Bangladesh condition. DOI: http://dx.doi.org/10.3329/bjas.v37i2.9885 BJAS 2008; 37(2): 82-88

Replacement of maize by different levels of triticale on performances and meat yield characteristics of broiler chickens

An experiment was conducted for a period of 5 weeks with 240 day-old cobb-500 broiler chicks and were allocated into six dietary treatments with isocaloric and isonitrogenous containing 2975 Kcal ME/kg DM & 21.70% CP and 3077 Kcal ME/kg DM & 20.34% CP both starter and finisher ration respectively. There were 40 chicks per treatment, each treatment had 4 replication having 10 chicks in each. The dietary treatments were T1 (0% triticale + 100% maize), T2 (20% triticale + 80% maize), T3 (40% triticale + 60% maize), T4 (60% triticale + 40% maize), T5 (80% triticale + 20% maize) and T6 (100% triticale + 0% maize). The broilers of all treatment groups were supplied feeds and water ad libitum throughout the experimental period. There were no significant differences (P>0.05) in feed intake, final body weight, total gain, feed conversion efficiency, survivability% but feed cost per kg live broiler production was differed significantly (P<0.01) among dietary treatments at 35 days of age. Therefore, it is clear that triticale is a good alternative cereal for broiler diet without affecting performance and it may safely replace up to 100% of maize but 40% replacement enhance production performance and edible meat yield of broiler and reducing feed cost (Tk. 2.88/kg) per unit of broiler production.Keywords: Triticale; maize replacement; production performance; meat yield characteristicsDOI: http://dx.doi.org/10.3329/ijns.v1i1.8613 International Journal of Natural Sciences (2011), 1(1):25-30